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Tektronix Sleep Apnea Machine 070-5992-05 User's Manual

1. 1 gt gt AUX 2 3 gt SUM_ENABLE 16 dna SUM L R 5 1 00M C369 9 4 2 2UF gt P 4 AGCV to gb DIFF_ENABLE 8 g DIFF R L Z v 6 MN ve 5 45 DEGREE ORTHOGONALITY MY MATRIX CORRECTION BB 10 0K nes AUX BAR SELECT CR559 10 0K 2 3 L R s CONTROL LOGIC 5 U462B CR558 R458 IENA MC34084 10 0K a is h R371 4 10 0K R460 cass p U179A 10 0K ATUF 1 R364 10 0K 12V AGC CONT gt U462A CR458 1 MC34084 2 R359 2M 5V 12V R362 R358 1 0158 10 0K 10 0K 7415138 Poss 7 AUTO 100K ps U361 CAL 6 1107 654 LM311 DG201 1 44 1 KE AGCH 2 8 4 ORTHOGONALITY 3 16 e qa 1 12V MANUAL 15 14 4 J373 R467 R463 R466 R564 9 10 0K 20K 10 0K 10 0K a R263 10 11 3 5 62K a 7 54 5 00K 10 0K CRs65 R264 8 dpa 10 0K 1 8 R262 7 oo 6 12V 500 9 5 es U462C CR566 R363 9 CAL 165 12V 5 J373 R472 MC34084 10 0K 4 7UF 12V V GND 10 0K J 1 R265 5 459 3 0K U379A MC34084 t U468 10 0K STD 5 LF351 Su 10 0K E CR563 5 f 14 NOTE R265 12 CR564 R375 U462D 5 00K MC34084 7604 89i Al 760D 1 91K 760N 1 91K C461 2 2UF 1 B4
2. 10 0K ra LEFT BAR ANODE DRIVER 12V mE ORMS 9308 0208 2p 45V 45V 741542 UDN2585 1 lo 3 12V 3 U445C 06358 91 TUNMG34084 MC34084 U453A R738 LT1018 R737 2 02 1 R547 MC34084 TP551 100 10 0K 6637 18 03 10 4 5 C349 347 8 CR546 8 45K 7 100 LCMP 2 4 04 1007 500 e 5 05 4 R543 6 02 16 06 Es 10 0K R447 R736 4 a 7 07 C546 33UF 3 24M 100 F5 14 04 5 6PF AR 6 05 vec CHANNEL CR543 7 1 kd GND SUB MATCH N deee 9 11 197 T dur 5 CR545 1 M C542 G2 ine U708B 4084 lt U445D R541 74LS32 MC34084 R353 2 R446 1 00M 39UF 12 R351 4 75K 14 20K r3 N 13 R548 1 1 18 2K OFFSET 4 5 U436A R 745123 Yoox o 118 U453C 2 Cola LTIMEOUT LEFT DYNAMIC RESPONSE CONTROL PPM 8 gts LEFT SIGNAL 7 PROCESSOR AIO 7 1115 2 00 7 U432 CONNECTS D4 7415684 4135 A 2 b 1 6 6 2 P gt Q b A3 8 62 7 9 H4 11 2 J B A5 13 bs FRONT 5 A6 15 PANEL DAC U428 7 317 pe BOARD 10 x ape 7415273 9 2 aH 3 ao 02 5 gt ai A 7 o as 8 24 02 A4 1804 04 12 12 93 PEAK HOLD ON OFF Rn 85 15 1104 7473 b as 15 te 05 Ar 38 07 07 19 18 9
3. Component Tektronix Serial Serial No Mir Number Part Number effective Discont d amp Description Code Mfr Part Number 0 2 H LOW PROFILE UMPER A3P273 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE J UMPER 373 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE JUMPER A3P385 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE J UMPER A3P392 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE UMPER 657 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1 X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE J UMPER A3P664 131 3199 00 CONN SHUNT SHUNT FEMALE STR 1X 2 0 1 CTR 22526 68786 202 0 2 H LOW PROFILE J UMPER 30507 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 30MHZ 0AMPL 0JRO4 2 3904 0603 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0 804 2N3904 A3Q604 151 0188 00 XSTR SIG BIPOLAR P NP 40V 200MA 250MHZ AMP L 0 804 2 3906 0620 151 0710 00 XSTR SIG BIPOLAR NPN 40V 1 0A 50MHZ AMPLIFIER 04713 MPSWO1A 30695 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0JRO4 2 3904 30761 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0 804 2 3904 30766 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0 804 2N3904 A3Q769 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0JRO4 2 3904 A3Q776 151 019
4. 760A 7600 760N AUXILIARY WHITE RED 1 BLACK i T U654D MC34084 12 REAR PANEL AUDIO INPUTS LEFT REAR PANEL C660 CR659 14 17 12V JUMPER INPUT PINS TERMINATION I 150 OHM 2 2 600 3 3 INFINITE I 13 JUMPER PINS INPUT SENSITIVITY LEFT Jess 17 INPUT AMPLIFIER 16dBu 12dBu 8dBu 4 R656 4 95K 758 1 100 12 U654C MC34084 U179D MC34084 12 AUDIO INPUTS RIGHT gt 187 14 1 U654A MC34084 U654B MC34084 CR187 lo 12V JUMPER INPUT PINS 150 2 2 600 3 3 INFINITE CR286 D 0141 13 JUMPER PINS INPUT SENSITIVITY RIGHT see tlalalals e 171 2 2 INPUT AMPLIFIER 16dBu 12dBu 8dBu 4 C287 J 100PF 07 0141 CR287 12 im I 0179 MC34084 U379D MC34084 12 REAR PANEL J153 CONNECTS TO J4 lt gt 1 SUPPLY J C387 CR387 i 14 7 1798 MC34084 12V JUMPER INPUT PINS TERMINATION 1 150 2 2 600 OHM 3 3
5. OR ADJ USTMENT PROCEDURE 5 Figure 4 1 Using the foldout pages Diagrams Block and circuit diagrams are the most often used aids to trouble shooting The circuit number and electrical value of each component is shown on the diagram see the first page in the Diagrams section for a definition of the reference symbology used to identify components in each circuit Refer to the Replaceable Electrical Parts List for a complete description of each component Those portions of the circuits that are mounted on circuit boards or assemblies are enclosed in a gray border with the name and assembly number shown on the border Circuit board input and output signals are applied through multi pin connectors The connector holder has numbers that identify terminal connectors numbered 2 and up A triangular key symbol on the connector is also located on the circuit board to identify pin 1 so that the connector can be properly oriented A pin replacement kit including necessary tools instructions and replacement pins is available from Tektronix Inc Circuit Board Illustrations Electrical components connectors and test points are identified on circuit board illustrations located on the back of the preceding schematic diagram Theory of Operation These pages can be turned to and read while the schematic diagram for that circuit description is folded out 760A 7600 760N 4 3
6. 551 554 S lt 336 C353 R546 5465352 ssa 5577797 ES amp 2 99 m 510 L513 523 527 53 C535 C538 90 o 672 o m um nen 10070 0590 S R og Sle 5n 15 wig b4 c es peewee 9 C612 m mo c c cc iiS S lO so o 0684 wr x nro vM d ml SING Se 41141635 10 Scan NNNNNNN D CD 00 00 00 oo c 235 us 505 50 e U654 al C670 SO SO SO NO sO SO SO SO SO sO SO SO SO C620 Real S 1 121 0623 5 f iuo 0 I 55 5 DOSES DT B3 a8 CA pn a nr nc ac ac ac 0627 1638 0638 d o E E 516 2 281 1 Sye NI fO IO NNN RONAN NIN 712 Yr SSS 6754 PHB 2 0 mae C772 R777 12778 R782 789 R789 mr rm mr 745 NN NNN ale SINS ov LS R720 TP725 ao 010 N C708 711 C718 TET 0 239 N N m 725 oV so MTN C731 C735 C738 C744 C748 C753 N NNDom C728 R758 R759 G NNNNN KAS NNN C794 R798 aN C724 NN NININININ eje e auc caa 05705 lu d mmm mm 776 e U708 U711 NING 0844 0 o
7. Mfr Code 0 01 0 01 0435 80009 80126 2 262 80009 5 400 0 01 0 01 80009 80009 0435 34785 34785 34785 85471 80009 59730 07416 80009 0J ROS 80009 50434 80126 80126 Mfr Part Number ORDER BY DESC ORDER BY DESC ORDER BY DESC 337319601 B 0779 ORDER BY DESC 337393100 ORDER BY DESC ORDER BY DESC 211 0720 01 348 1464 00 407439500 ORDER BY DESC 029 500 029 500 029 500 ORDER BY DESC 386444300 TY234M EURO DIR 331 4064 00 ORDER BY DESC 426210307 331 0496 00 070599203 QDSP 8838 C7120 25M BL 0 5335 008 GY 10 5 Replaceable Mechanical Parts Replaceable mechanical parts list Cont Fig amp Index Tektronix Serial No Serial Qt Mfr Number Number Effective Discontd Name amp Description Code Mfr Part Number 45 161 0066 10 1 ASSY PWR 3 0 1MM SQ 250V 10A 2 5 METER STR 53100 5 13 05 0 IEC320 RCPT X 13A FUSED UK PLUG 13A FUSE UNITED KINGDOM SAFTEY CONTROLLED UNITED KINGDOM OPTION A2 ONLY 46 161 0066 11 1 ASSY PWR 3 1 0MM 50 250 10 2 5 METER STR 53109 198 000 IEC320 RCPT AUSTRALIA SAFTEY CONTROLLED AUSTRALIAN OPTION A3 ONLY 1 PLAIN CASE 1700F 00 1 PTD CASE 55 1700 02 1 RACKADAPTER SIDE BY SIDE 1700F05 1 FILLER PANEL 1700F06 1 DRAWER UTILITY 1700F07 41 129 1308 00 052743 1 SPACER POST 6 32 X 0 75 HEX STL
8. demonstrated to the following specifications as listed in the Official J ournal of the European Communities EN 50081 1 Emissions EN 55022 Class B Radiated and Conducted Emissions EN 50082 1 Immunity IEC 801 2 Electrostatic Discharge Immunity IEC 801 3 RF Electromagnetic Field Immunity IEC 801 4 Electrical Fast Transient Burst Immunity 1 High quality shielded cables must be used to ensure compliance to the above listed standards This product complies when installed into any of the following Tektronix instrument enclosures 1700F 00 Standard Cabinet 1700F 02 Portable Cabinet 1700F 05 Rack Adapter CSA Certified Power Cords CSA Certification includes the products and power cords appropriate for use in the North America power network All other power cords supplied are approved for the country of use Safety Standards U S Nationally Recognized Laboratory Listing Canadian Certification European Union Compliance Additional Compliance Safety Certification Compliance Temperature operating Altitude maximum operating Equipment Type Safety Class Overvoltage Category Pollution Degree 760A 760D 760N UL1244 Standard for Electrical and Electronic Measuring and Testing Equipment CAN CSA C22 2 No 231 CSA Safety Requirements for Electrical and Electronic Measuring and TestEquipment Low Voltage Directive 73 23 EEC Amended by 93 68 EEC EN61010 1 Safety Requirements for Electrical Eq
9. 4 B INPU INPUT 6 TERMINATION JUMPERS 048 E SENSITIVITY JUMPERS ASSEMBLY MAIN BOARD Figure 3 1 760 760D 760N jumper locations for input and display orientation selections 760A 760D 760N Installation 3 4 760 760D 760 WK i i i D i A EE Maintenance Section 4 Maintenance Introduction This section discusses preventive maintenance general troubleshooting information and corrective maintenance If the instrument does not function properly troubleshooting and other corrective measures should be taken immediately to prevent any additional problems Preventive Maintenance Cleaning 760A 760D 760N Preventive maintenance consists of cleaning visual inspection a performance check and if needed readjustment The preventive maintenance schedule that 15 established for the instrument should be based on the environment in which the instrument is operated and the amount of use Under average conditions a preventive maintenance check should be performed every 2000 hours of instrument operation Clean the instrument often enough to prevent dust or dirt accumulation Dirt acts as a thermal insulating blanket and prevents effective heat dissipation It also provides high resistance electrical leakage paths between conductors or components in a humid environment Exterior Clean the dust from the outside of the instrument by wiping or bru
10. 5VC J2 R73 1 1 en 10 0 2 2 777 bm C46 res i CR16 SECONDARY GROUND LINE SIDE COMMON CHASSIS GROUND PEAK DETECTOR 1 1 PART POWER SUPPLY 760A 760D 760N STEREO AUDIO MONITOR LOW VOLTS POWER SUPPLY Seard 1 2ielifSfr4i diagram has to assist locating parts within that diagram Assembly A1 Partial Assembly A1 also shown on Schematic 6 Comp Diag Comp Diag Comp Diag No Loc Loc No Loc Loc No Loc Loc Si C1 C4 A4 CR31 A2 E2 R33 C4 B4 C2 D3 D1 R34 4 B4 C3 D3 A2 DS1 E2 B2 R35 D4 B3 2 C4 D3 A2 052 E2 B2 C5 D4 B3 DS3 2 R36 D4 B3 R37 C5 B4 4 B4 FIL1 C3 R38 E2 B1 C7 F3 B1 FIL2 C3 R39 E2 B1 D3 B2 R40 D2 B2 9 E2 B2 Ji F3 B1 C10 C5 B4 J8 F2 D1 R41 D4 B3 J11 F4 A2 R42 E3 C1 A10 Socket Board Front of Board 2 B1 R43 E2 B3 3 12 02 4 Q1 5 B3 R44 02 B3 C13 D2 4 Q2 5 R45 F2 4 C14 D2 C4 04 B4 C15 F2 4 Q4 D4 B4 R46 E3 C1 Q5 C4 B4 R47 D2 C3 C16 C2 C3 Q6 B2 E1 R48 C2 C4 C17 F2 D4 Q10 A2 E2 R49 F2 C4 C18 F3 E1 R50 F2 E1 C B C19 C D4 R1 E3 A1 20 c2 04 R2 E4 A2 R51 F3 1 R3 E4 A2 R52 F2 E1 C21 04 R4 4 853 F2 1 22 2 2 R5 E5 A3 R54 F2 E1 2 C23 B2 855 02 04 24 D E4 R7 B4 A4 1 C25 A3 E2 R8 B4 A4 R56 F3 1 R11 F4 A2 R57 B2 E1 27 B1 E3 R12 D3
11. Mfr Code 91637 91637 91637 91637 91637 56845 91637 91637 TK2073 51668 91637 12697 80009 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 XO XO XO XO XO XO XO wo o 1637 1 2073 1 2073 91637 57668 19701 19701 1637 1637 1637 1637 1637 1637 XO XO vo o o Mfr Part Number CCF50 2647502F CCF501G 10000F CCF501G 10002F CCF501G 10003F CCF501G 332R 0 CCF50 2 G4751FT CCF501G47501F CCF501G20000F GF06VT2105 M L CRB2D FXE 432 CCF501G82500F CM45228 366170101 CCF501G 100R OF CCF501G 100R OF CCF50G 10001F CCF501G 100R OF CCF501G 100R OF CCF50G 10001F CCF501G 100R OF CCF50G 10001F 501 10001 CCF501C10001B CCF50G 10001F CCF501C10001B CCF501G20001F 501675001 2 501 ML GF06UT2 502 M L CCF501G35700F 20 221 5033RE4K455B 5033RE15K00B 65116G 150R OF CMF 65116G 604R OF CCF50G 10001F CCF501G 47501F CCF501G 20000F CCF501G 10000F 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R772 A3R773 A3R774 A3R775 A3R776 A3RTTI A3R778 A3R779 A3R780 A3R781 A3R782 A3R783 A3R784 A3R785 A3R786 A3R787 A3R788 A3R789 A3R790 A3R794 A3R797 A3R798 A3R815 A3R820 A3R821 A3R824 A3R842 A3R843 A3R844 A3R845 A3R 846 847 A3R 849 851 852
12. RES VAR TR ADJUSTT amp R 1600 ONLY RES VAR TRMR CER 50 ADJUST 760N ONLY RES VAR TR ADJUSTT amp R 760N ONLY RES FXD R CER R CER TAL FIL RES FXD METAL FILM 1 RES FXD METAL FIL RES FXD METAL FILM 1 RES FXD METAL FIL RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PP RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 E E E E E E E E RES FXD METAL FIL 43 2K OHM 1 0 2W TC TOMI S MALL BODY OHM 1 0 2W TC 100 PPM ET 20K OHM 20 0 5W 0 197 M 1 0 2W TC TOMI SMALL BODY ET 500 OHM 20 0 5W 0 197 OHM 20 0 5W 0 197 SQ TOP ET 500 OHM 20 0 5W 0 197 OHM 20 0 5W 0 197 SQ TOP ET 500 OHM 20 0 5W 0 197 OHM 20 0 5W 0 197 SQ TOP 10K OHM 1 0 2W TC 100 1 0 2W TC 100 PPM 10K OHM 1 0 2W TC 100 PPM 1 0 2W TC 100 PP 10K OHM 1 0 2W TC 100 100K OHM 1 0 2W TC 100 PPM RES FXD FILM 750K OHM 1 0 2W TC TOMI SMALL RES FXD METAL FIL 115 OHM 1 0 2W TC 100 PPM RES VAR TRMR CERMET 2K OHM 20 0 5W 0 197 SQ TOP ADJUST RES FXD FILM 750K OHM 1 0 2W TC TOMI SMALL RES FXD FILM 14 0K OHM 1 0 125W TC T0MI RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM RES VAR NONWW TR R 20K OHM 20 0 5WLINEAR MI RES NONWW TRMR 20K OHM 20 0 5WLINEAR Mfr Code TK2073 91637 91637 91637 91637 TK2073 9
13. noninverting input 15 set to 2 5 V by an internal voltage reference Current from the peak detector flows through 83 and R79 R84 provides 100 offset voltage at 05 pin 1 will vary in order to maintain U5 pin 2 at 2 5 V The voltage at U5 pin 1 is modified by an internal circuit and sets the trip point of the internal comparator 05 3 is the external input to the comparator R88 and C52 connected to U5 pin 4 set the internal oscillator to 80 kHz The circuit works as follows The oscillator resets the latch and U5 pin 6 goes high turning the switcher mosfet on The current through the switcher mosfet increases causing the voltage across R96 to increase This voltage is divided by R87 and R101 and is applied to the comparator pin 3 When the voltage at U5 pin 3 reaches the comparator trip point the latch toggles and the switcher mosfet is turned off This process is repeated at an 80 KHz rate C58 increases the PWM noise immunity by rolling off the internal op amp frequency response R82 holds the switcher mosfet off as the circuit is powering up R81 slows the turn on of the switcher mosfet while CR27 speeds up the turn off The three output windings supply four output voltages Each output is rectified by a single diode and filtered by an LC pi filter The Error Amplifier regulates the 5 V output by feeding an error signal to the Pulse Width Modulator VR1 is a 2 5 V shunt regulator containing an op amp
14. 5 SELECTBAR gt H E R852 ACMP 2 9 BE 10 0K cess 857 i a Hi AAA C854 33UF TT 24 Reus 2 92 MA 0 4 N 8 5 95 o pu veo EI o 45V CHANNEL CR853 SZ PRON iB 7 2006 ca 8 O7 100 L C215 TE 9 i 1UF 5 CR854 1 U853B CR852 m 5 MC34084 i Us sss a 741532 R854 42 1 00 rit AUR S 4 75 14 A R553 gt 1 U838A 3 18 7418123 ww 182K OFFSET R356 43 2K B 46 X x 212 U711C tga 741832 ATIMEOUT 2 lB Gp U838B 7418123 A 7415684 13 AUX DYNAMIC RESPONSE CONTROL PPM NNI 9 5 1 741632 8 02 41 wl abe AG 15 55 1 0831 A7 17 p 1 7418273 A 3 Bt q 3 go AA Jo o A2 7 6 7 02 8 9 9 4 04 13 104 04 12 12 112 A5 14 08 ce 15 14 104 17 15 16 gt E AT 07 97 9 18 19 07 5V MASTER CLOCK m R716 452 C818 q UE AGATE U818 ADELAY n 7555 E1 8 25K f 7108 y U825C lt gt L 5 TS 7415132 2700PF 4 4 4 3 4 taia RST UF 6 8 voc EST GND 1 2 3 4 R423 5 T 6 7 8 E1 V LA 0 31 U424 741 5374 3 2 R815 ma 10 99 5 TAZ C815 Bo ox M4 8 e 1 H A0 8 102 02 TAO r1 13 98 9 6
15. GND C578 22UF EM TP672 R565 C574 R676 10 0 2 202 34 0 R771 C768 HAGC JH 1 00K 2 2UF T 3 R566 4 10 0K 7 h crass R770 2 2 00K 12 R677 R674 et 475 1 00K 20K 1 C578 OFFSET Se 12V 1 760 7600 760 STEREO AUDIO 0620 2 LOW PASS FILTER C870 1200PF R774 R868 5 90K 23 2K R875 R876 2 55K 11 8K R769 1 872 47 5 876 120PF 600PF j 100 12V 0864 HORIZONTAL OUTPUT AMPLIFIER 100V 100V 9 9 NOT INSTALLED R867 R858 6 3K 6 3K J862 GREEN _1 RED 2 R861 100 Q861 12V 12V R760 3 57K noo Q865 0761 20K HORIZONTAL HORIZ GAIN R866 R759 1 50 5K R865 gt R864 698 698 PART OF A3 MAIN BOARD AND CRT DEFLECTION AMPS VERTICAL DEFLECTION TO CRT HORIZONTAL DEFLECTION FILI FIL2 A1 Power Supply Board Static Sensitive Devices See Maintenance Section A1 Board and Diagram lt 6 gt Component Locator with cross references to schematic diagrams 6 and 7 Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag Bd Comp Diag Diag No No Loc Loc No No Loc Loc No No Loc Loc No No Loc Loc No No Loc Loc No No Loc Loc No Loc Loc No No Loc Loc
16. R58 D2 E4 C28 B1 E3 R20 C4 A4 R59 B1 E2 C34 D F4 R60 C1 C65 B2 F4 R21 C5 A4 C66 A2 E2 R22 D5 A4 R61 D1 E4 R23 B4 A4 R63 A2 E2 CR1 E2 B1 R24 D5 A4 R64 c2 E2 CR2 D4 B3 R25 B4 4 R65 B1 E3 2 CR3 E2 B1 R66 B1 E3 CR4 C2 B2 R26 5 103 A2 E2 CR5 D2 C3 R27 5 4 R28 E5 A4 Ti B2 C4 CR6 E2 C3 R29 D2 B1 J3 EN CR7 c2 D4 R30 D2 A2 U1 D1 C1 CR8 C2 D4 U2 B1 F4 CR9 C1 E4 R31 D4 B3 CR30 A2 E2 R32 E5 B3 VR2 A2 E2 A10 CRT Socket Board Back of Board 3 760A 760D 760N OSC amp P320 IS PART ERROR AMP c19 EL c24 L OF GRT T 10UF ZT 10UF T 10UF 77 P320 28 I 1 O 1UF nee Raa 2 a 499K 100K 7 TRACE n 5 5KV P P 2 N our 3 11KV POST 97 ROTATION 5 000K 15 C27 O 1UF 5V C21 1 CRT o 015UF i 7 J Reo 12 6 04K lt 95 6 6 4 8 lt 3 100V c
17. 1637 1637 1637 1637 XO XO dO HO o o 1637 1 2073 Mfr Number 4715 CCF501G 1008 OF CCF501G 10R 00F CCF50G37400F 501637401 CCF501G 1008 OF CCF501G 100R OF CCF50 2 G4993FT CCF501D13001D 501637401 4705 1035 CCF501G 10002F CCF50 2 G4993FT CCF501D13001D CCF501G20000F CCF50G475R0F CCF501G20000F CCF50 2 G22R10F CB2265 CB4715 CB1035 CCF501G 178R OF 506 15002F CB4715 CB4715 2 104 CCF501G10R00F CCF501G10002F CCF501G30100F GF06UT2 203 M L20 CCF501G10R00F CCF501G49900F CCF501G10R00F CCF501G10R00F CCF501G49900F CCF501G22101F CCF501G10R00F CCF50 2 G22R10F GF06UT2104ML 760A 760D 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Serialno Serial No Component Tektronix Number Part Number Name amp Description Code Part Number A1R59 322 3485 07 RES FXD FILM 5K OHM 0 1 0 2W TC T9 SMALL BODY 91637 CCF501C50000B A1R60 322 3268 00 RES FXD FILM 6 04K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G60400F 1 61 322 3034 00 RES FXD METAL FILM 22 1 OHM 1 0 2W TC 100 PPM 91637 CCF50 2 G22R10F A1R62 322 3097 00 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 CCF501G100R0F A1R63 322 3222 00 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM 91637 501 20000 A1R64 322 3385 00 RES FXD
18. 853 854 Serial Discont d Serial no effective Tektronix Part Number 322 3171 00 322 3097 00 322 3261 00 322 3097 00 322 3250 00 311 2236 00 322 3269 00 322 3289 00 322 3289 00 322 3193 00 311 2236 00 322 3246 00 322 3130 00 322 3218 00 311 2234 00 322 3230 00 322 3218 00 311 2231 00 321 0263 00 322 3222 00 322 3097 00 322 3097 00 321 0720 00 322 3289 00 322 3289 00 322 3001 00 321 0418 00 322 3097 00 322 3289 00 322 3097 00 322 3097 00 321 1720 00 322 3289 00 322 3289 00 322 3289 00 322 3314 00 322 3258 00 760A 760D 760 Mfr Name amp Description Code RES FXD METAL FILM 681 OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD FILM 5 9K OHM 196 0 2W TC TOMI SMALL 56845 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 3 92K OHM 196 0 2W TC 2100 91637 RES VAR TRMR CERMET 20K OHM 2096 0 5W 0 197 TK2073 SQ SIDE ADJUST RES FXD FILM 6 19K OHM 1 0 2W TC TOMI SMALL BODY 91637 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM 91637 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM 91637 RES FXD METAL FILM 1K OHM 196 0 2W TC 2100 PPM 91637 RES VAR TRMR CERMET 20K OHM 2096 0 5W 0 197 TK2073 50 5 ADJUST RES FXD FILM 3 57K OHM 1 0 2W TC TOMI SMALL BODY 91637 RES FXD METAL FILM 221 OHM 1 0 2W TC 100 PPM 57668 RES FXD METAL FILM 1
19. 333 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA 338 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C343 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C344 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C349 290 0990 01 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL 62643 5110296 A3C361 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C368 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 04222 SA105E104MAA 369 283 0164 00 CAP FXD CERAMIC MLC 2 2UF 20 25V Z5U 0 40X 04222 SR403E225MAA 8 14 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3C379 A3C387 A3C390 A3C406 A3C411 A3C415 A3C436 A3C445 A3C448 A3C450 A3C453 A3C457 A3C458 A3C459 A3C461 A3C462 A3C468 A3C469 A3C479 A3C487 A3C490 A3C502 A3C510 A3C523 A3C527 A3C530 A3C535 A3C536 A3C538 A3C543 A3C545 A3C546 A3C547 A3C547 A3C548 A3C548 A3C554 A3C556 A3C557 Tektronix Part Number 281 0775 00 281 0765 00 290 0990 01 281 0775 00 281 0775 00 281 0775 00 281 0775 00 281 0775 00 285 0905 00 281 0775 00 281 0775 00 281 0775 00 290 0782 00 290 0782 00 283 0164 00 281 0775 00 281 0775 00 281 0775 00 281 0775 00 281 0765 00 290 0990 01 281 0775 00 290 0973 00 281 0775 00 281 0775 00 281 0775 0
20. A2 FRONT PANEL J110 CONNECTS 4413 MAIN BOARD s Replaceable Mechanical Parts Section 10 Replaceable Mechanical Parts This section contains a list of the replaceable mechanical components for the 760 760D and 760N Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number Change information if any is located at the rear of this manual Using the Replaceable Mechanical Parts List The tabular information in the Replaceable Mechanical Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts The following table describes the content of each column in the parts list 760A 760D 760
21. Name amp Description Code Part Number 1 1 426 2174 02 1 FRAME CRT BEZEL 80009 426217402 MOUNTING PARTS 2 211 0690 02 2 SCREW MACHINE 6 32 X 0 875 PNH SST 93907 8 20 70430 END MOUNTING PARTS 3 361 1515 00 1 SPACER RING 4 9 3 35 CARBONATE 31462 361 1515 00 4 333 3320 01 1 PANEL FRONT 760 80009 333332001 5 378 0258 00 1 FLTR CONTRASTIN GRAY POLY CARBONATE 80009 378025800 6 331 0495 00 1 SCALE CRT SOUND STAGE GRATICULE 760 0JROS 331 0495 00 7 331 0245 01 1 MASK CRT SCALE 760 2K262 ORDER BY DESC 8 333 3986 00 1 PANEL FRONT 760A 80009 333398600 760A ONLY 333 3787 00 1 PANEL FRONT 760D 22670 333 3788 00 7600 333 3788 00 1 PANEL FRONT 760N 22670 333 3788 00 760 MOUNTING PARTS 9 211 0721 00 2 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX 1 ORDER BY DESC END MOUNTING PARTS 04 1 CIRCUIT ASSY FRONT PANEL SEE 2 MOUNTING PARTS 11 211 0721 00 4 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR 1 ORDER BY DESC END MOUNTING PARTS 426 2101 04 1 FRAME SECT CAB FRONT 3L462 ORDER BY DESC MOUNTING PARTS 13 211 0721 00 3 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR 1 ORDER BY DESC END MOUNTING PARTS 4 1 SWITCH PUSH 0 4A 125VAC W SOLDER LUG BUTTONW YELLOW INDICATOR SEE 51 REPL MOUNTING PARTS 15 210 0405 00 2 NUT PLAIN HEX 2 56 X 0 188 BRS CD PL 73743 12157 50 16 211 0100 00 2 SCREW MACHINE 2 56 X 0 750
22. Table 5 1 Verifying Input Sensitivity 760A only Input Sensitivity Jumper Setting Input Level 760A Bar Reading 4 dB 1 228 Vims 0 dB 8 dB 1 947 Vims 0 dB 12 dB 3 085 Vims 0 dB 16 dB 4 890 Vims 0 0 775 0 5 Check Control Range a Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTS b CHECK that when the leveled audio signal generator output level is varied as indicated on the RIGHT and LEFT bars between 760A 8dB and 20 dB 7600 5 dB and 25 dB 760 15 dB and 15 dB that the size of the CRT display changes very little 6 Check Gain Match a Connect the leveled audio signal generator output to the LEFT AUDIO INPUT and set the DISPLAY GAIN control to CAL b Setthe leveled audio signal generator output level so the trace ends on the center amplitude mark of L graticule line See Figure 2 3 for a description of the graticule markings Move the input signal from the LEFT AUDIO INPUT to the RIGHT AUDIO INPUT 760A 760D 760N 5 5 Performance Check Calibration Procedures 5 6 4 CHECK that the trace ends within one half division of center amplitude mark of the R graticule line Check Gain Tracking a With the leveled audio signal generator output still connected to the RIGHT AUDIO INPUT set the DISPLAY GAIN control to AUTO Align the trace with the R graticule line CHECK
23. Use Care When Servicing With Power On Dangerous voltages or currents may exist in this product Disconnect power remove battery if applicable and disconnect test leads before removing protective panels soldering or replacing components To avoid electric shock do not touch exposed connections X Radiation To avoid x radiation exposure do not modify or otherwise alter the high voltage circuitry or the CRT enclosure X ray emissions generated within this product have been sufficiently shielded 760A 7600 760N ix Service Safety Summary X 760A 7600 760N Preface Features Operators Part Service Part 760A 760D 760N This manual documents the TEKTRONIX 760A 760D 760N Stereo Audio Monitor and is intended for instrument operators and service technicians Operatorsare assumed to be familiar with basic television terms and measure ments Qualified service technicians are also assumed to be familiar with television terms and measurements and have moderate experience with analog and logic circuits The manual is divided into two parts Operator s Information and Service Information The Operators information is useful to both operators and service technicians The Service Information is intended only for qualified service technichians The Operators part includes Sections 1 and 2 Section 1 Introduction and Specification includes a general description of the instrument followed by the Specifications
24. W1ATTACHED PARTS 131 6014 00 ASSY CRT DISCRETE ANODE LEAD CRT 1 22AWG 30KV END ATTACHED PARTS wi 179 2997 00 WIRE HARNESS DESCRETE CRT ASSY CPD 5 24AWG 5 26 80009 179299700 AWG 1X40 1CTR amp 1X7 RCPT X 1X4 amp 1X7 0 1 RC 174 3511 00 CAASSY SP DESCRETE CPD 4 26 AWG 8 0L 1X7 0 1CTR RCPT 9 860 174 3511 00 X STRAIN RELIEF PCB ATTACHED PARTS 344 0111 00 INSUL SPREADER DEFL LEADS POLYPROPYLENE TK1617 NA END ATTACHED PARTS 8 32 760A 760D 760N eee Diagrams Circuit Board Illustrations Section 9 Diagrams Circuit Board Illustrations Symbols Component Values 760A 760D 760N Graphic symbols and class designation letters are based on ANSI Standard Y32 2 1975 Logic symbology is based on ANSI Y32 14 1973 in terms of positive logic Logic symbols depict the logic function performed and may differ from the manufacturer s data Overline parenthesis or leading slash indicate a low asserting state Example ID CONTROL ID CONTROL CONTROL Abbreviations are based on ANSI 1 1 1972 Other ANSI standards that are used in the preparation of diagrams by Tektronix Inc are Y14 15 1966 Drafting Practices Y14 2 1973 Line Conventions and Lettering Y10 5 1968 Letter Symbols for Quantities Used in Electrical Science and Electrical Engineering American National Standard Institute 1430 Broadway New York New York 10018 Electrical component
25. 0 0A0 END ATTACHED PARTS 25525 260 2273 00 SWITCH PUSH SPST LOW PROFILE MOMENTARY 25534 260 2273 00 SWITCH PUSH SPST LOW PROFILE MOMENTARY A2U320 156 0111 02 IC DIGITAL TTL DEMUX DECODER BCD TO DECIMAL A2U332 156 0111 02 IC DIGITAL TTL DEMUX DECODER BCD TO DECIMAL A2U347 156 0111 02 IC DIGITAL TTL DEMUX DECODER BCD TO DECIMAL A3 671 2383 04 B050000 B052828 CIRCUIT BD ASSY MAIN 760A ONLY 671 2383 05 052829 CIRCUIT BD ASSY MAIN 760A ONLY A3 671 1469 04 0000 8030174 CIRCUIT ASSY MAIN 760D ONLY A3 671 1469 05 030175 CIRCUIT BD ASSY MAIN 760D ONLY A3 671 1472 04 B030000 B030209 CIRCUIT BD ASSY MAIN 760N ONLY A3 671 1472 05 030210 CIRCUIT BD ASSY MAIN 760N ONLY ATTACHED PARTS 358 0723 00 STRAIN RLF CA 1 9 L X 0 24 W X 0 56 HIGH PLASTIC END ATTACHED PARTS A3C125 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 A3C127 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 760A 760D 760N Mfr Code TK1155 1727 TK1727 TK1727 TK1727 TK1727 56845 TK1727 12697 86928 0 ROS 09353 0 ROS 8 345 11590 11590 01295 01295 01295 80009 80009 80009 80009 80009 80009 53387 04222 04222 Mfr Part Number 150 1286 00 SFR25 2322 181 SFR25 2322 181 SFR25 2322 181 SFR25 2322 181 SFR25 2322 181 CCF50 2 G4751FT 2322 151 6 98 45225 5710 56 15 ORDER BY DESC MA03L1NCG ORDER BY DESC 214 4725 00 ORDER BY DESC ORDER BY DESC SN74145N
26. 760 5 bar segments 7600 4 bar segments Performance Check Calibration Procedures 760N 5 bar segments Set 5340 to Position 7 expanded scale with offset Set the leveled audio signal generator output level so the LEFT bar indicates 760A 0 dB 760D 0 dB on white scale 760N 0 dB on blue scale CHECK that when audio signal generator frequency is varied from 20 Hz to 20 kHz each bar amplitude changes less than 0 5 dB With 5340 set to position 7 this 15 760 10 bar segments 4 to 4 scale marks 7600 4 bar segments 760N 5 bar segments Set S340 to Position 0 normal scale 13 Check Bar Gain Match a 5 8 Connect the leveled audio signal generator output to the LEFT AUDIO INPUT only and set SELECT to AUX With the EXPAND SCALE push button depressed set the audio signal generator output level so the LEFT bar indicates 760A 8 dB TEST 760D OdB 760N 9 dB Move the input from the LEFT to the RIGHT AUDIO INPUT CHECK that with the EXPAND SCALE push button depressed the RIGHT bar amplitude matches the LEFT bar amplitude within 0 3dB 760A 3 bar segments 7000 2 bar segments 760 3 bar segments Move the input from the RIGHT to the AUXILIARY AUDIO INPUT CHECK that with the EXPAND SCALE push button depressed the AUXILIARY bar amplitude matches the LEFT bar amplitude within 0 3 dB 760A 7600 760N Performance Check Calibration Procedures
27. 8340 229 OE 1 CLOCK 760A 760D 760N STEREO AUDIO MONITOR PART OF A3 MAIN BOARD BAR SCANNER DRIVER AND DAC schematic diagram has an alphanumeric grid to assist in locating parts within that diagram 760A 7600 760N Schematic Diagram lt 4 gt Component Locator Chart Assembly A3 Comp Diag Comp Diag Comp Diag Comp Diag No Loc No Loc No Loc No Loc C165 G3 R371 B2 8602 G5 C369 D1 R157 4 8603 65 C458 D2 R158 C4 R373 R604 H5 C459 D3 R168 D4 R374 A3 R856 H1 C461 D4 R169 C4 R375 A3 C502 G5 R170 4 8400 G5 0158 E2 R458 D2 U161A F3 CR458 D2 R174 A2 U161B F2 CR459 D2 R175 A2 R460 D2 U167 H3 CR558 D2 R176 A2 R463 B3 U172 H1 CR559 D2 R262 G3 R466 C3 CR563 D3 R263 G3 R467 B3 U179A A2 CR564 03 R469 0361 2 CR565 D3 R264 G3 U368 C2 CR566 03 R265 G3 R470 C3 U379A R358 E2 R472 B3 U462A C2 J273 B2 R359 E2 R474 A3 4373 B3 R362 D2 R558 C2 U462B C2 J413 A4 R560 D1 U462C J419 H5 R363 D3 04620 R364 C2 R562 C3 U468 C3 Q603 G5 R366 B2 R563 D3 Q604 G5 R370 C2 R564 D3 9413 CONNECTS J110 FRONT PANEL BOARD AUX ENABLE
28. 9427 27014 9427 27014 9427 OLUA3 1 5060 27014 9427 27014 9427 27014 9427 21014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 OLUA3 1N4936 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 21014 9427 27014 9427 27014 9427 27014 9427 27014 9427 27014 9427 760 760D 760 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Number Part Number A3CR853 152 0141 02 A3CR854 152 0141 02 A3CR855 152 0141 02 A3CR876 152 0141 02 115 131 3363 00 153 175 9797 00 185 131 4750 00 186 131 4750 00 191 131 4530 00 192 131 4530 00 198 131 4530 00 273 131 4530 00 373 131 4530 00 385 131 4750 00 386 131 4750 00 391 131 4530 00 392 131 4530 00 398 131 4530 00 413 131 4421 00 419 131 3766 00 657 131 4750 00 658 131 4750 00 663 131 4530 00 664 131 4530 00 668 131 4530 00 A3L513 108 1262 00 185 131 3199 00 760 7600 760 Serial no effective Seri
29. C547 R648 C4 04450 B1 C548 4 R311 H4 U453A C1 C649 C4 R319 H3 R649 C4 C650 C4 R320 H3 R732 D4 04538 CA R321 H3 R733 D4 U453C C2 C724 B3 R347 R734 D4 U627 D5 C725 A3 R735 E4 U630 5 746 B4 R351 C1 6 04 R352 C4 R736 D1 CR442 B1 R353 C1 R737 D1 06358 DI CR443 B1 R354 C4 R738 D1 U638 F4 CR536 El R441 B1 R743 B4 U645A 4 CR542 B1 R820 B3 UG45B 4 CR543 B1 R443 A1 UG45C B4 R446 B1 R821 B3 CR545 R447 C1 R824 A3 06450 B4 CR546 B1 R451 C1 0708 F1 CR638 4 R541 D1 TP551 07088 Fi CR642 B4 TP552 C4 U708C F4 CR643 B4 R543 B1 U708D F4 R546 A4 U208 G1 CR742 B4 R547 C1 0213 4 U823A CR743 B4 R548 C1 U223 G3 U823B B2 CR746 B4 R550 C4 U308 G1 U825A CR747 B4 U313 G4 U825B B3 R551 C4 J115 H2 R605 0428 D2 R617 A3 U432 E2
30. CR855 B R845 E1 U424 U853C R846 D1 04530 08530 B R247 G4 R849 B1 U623 C5 R248 G4 R851 1 U711A R252 G4 8 U84A 171018 AUX SIGNAL PROCESSOR AUX BAR ANODE DRIVER 12V 760A 3 24M Rest 760D 2 00M 34 2 U317 U217 1 760N 2 00M m 45V 45V 741542 UDN2585 m 9 15 oo b U853A CR850 08286 04530 52 2 1 cress 55 MC34084 TP454 U844B 02 3 755 758 10 N 8 45K 111018 POM creas 4 10UF 500 iW I e E M 4 e og
31. Maintenance 4 4 Replaceable Electrical Parts List Replaceable Electrical Parts List is arranged in assembly by assembly order as designated by ANSI Standard 32 16 1975 The circuit number in the parts list is made up by combining the assembly number and the circuit number EXAMPLE R117 on A4 would be listed in the Replaceable Electrical Parts List as AAR117 In the Replaceable Electrical Parts List assemblies are listed first followed by circuit board mounted parts in alpha numeric order Parts Locating Charts The schematic diagrams are assigned location grids A parts locating chart for each assembly gives grid locations of components on that schematic Assembly and Circuit Numbering The circuit board assemblies are assigned assembly numbers Figure 4 2 shows the location of the circuit board assem blies in this instrument NS N 1 POWER SUPPLY BOARD A2 FRONT PANEL BOARD A3 MAIN BOARD REAR PANEL Figure 4 2 Circuit board locations in the 760A 760D 760N The part numbers for ordering these boards are given in Section 8 Replaceable Electrical Parts Generally each component is assigned a circuit number according to its geographic location within an assembly 760A 760D 760N Maintenance Obtaining Replacement Parts NOTE The parts lists in this manual should be used when ordering replacement parts Replacement parts are available from or through the local T
32. that when the leveled audio signal generator output level is varied as indicated on the RIGHT bar between 760A 8dB and 20 dB 7600 5 dB and 25 dB 760N 15 dB and 15 dB that the trace rotates less than one half the length of the minor amplitude mark the distance from the axis to the end of the minor amplitude mark See Figure 2 3 for a description of the graticule Check Phase Match a Set the 760A for an X Y display orientation P273 amp P373 on pins 1 amp 2 lower pins Do not change to the X Y graticule Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTS CHECK that when the leveled audio signal generator frequency is set at 20 Hz 500Hz 1 kHz and 20 kHz any trace separation is less than one trace width Reset the 760A for a sound stage display orientation P273 amp P373 pins 2 amp 3 upper pins Check CRT Frequency Response a Connect the leveled audio signal generator output to the RIGHT AUDIO INPUT set the DISPLAY GAIN control to MANual Set the MANual GAIN control so the trace ends on the center amplitude mark CHECK that when the leveled audio signal generator frequency is varied from 20 Hz to 20 kHz the trace length changes less than one division 760A 760D 760N Performance Check Calibration Procedures 760A 760D 760N d Move the leveled audio signal generator output from the RIGHT to the LEFT AUDIO
33. 00 RES FXD METAL FILM 178 OHM 1 0 2W TC 100 PPM 91637 CCF501G178R0F A1R82 322 3260 00 RES FXD FILM 4 99K OHM 1 0 2W TC TOTAPED amp 91637 CCF501G49900F A1R83 322 3289 07 RES FXD FILM 10K OHM 0 1 0 2W TC 19 T amp R SM BODY 91637 CCF501C10001B A1R84 322 3315 00 RES FXD FILM 18 7K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G18701F A1R85 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 CCF501G10002F A1R86 308 0793 00 RES FXD 0 51 OHM 5 1WTC 150P PM DEG 75042 BW20 510HM A1R87 322 3034 00 RES FXD METAL FILM 22 1 OHM 1 0 2W TC 100 PPM 91637 CCF50 2 G22R10F A1R88 322 3222 00 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM 91637 501 20000 A1R89 307 0746 00 RES THERMAL 5 OHM 10 7A DEG 15454 56200 5 A1R90 305 0242 00 RES FXD CMPSN 2 4K OHM 5 2W 11502 GF 30R GS 3 24 A1R91 306 0104 00 RES FXD CMPSN 100K OHM 10 2W 24546 2 100 A1R92 306 0104 00 RES FXD CMPSN 100K OHM 10 2W 24546 2 FP2 100 A1R93 322 3402 00 RES FXD METAL FILM 150K OHM 1 0 2W TC 100 PPM 91637 50615002 A1R94 322 3402 00 RES FXD METAL FILM 150K OHM 1 0 2W TC 100 PPM 91637 50615002 A1R95 322 3256 00 RES FXD FILM 4 53K OHM 1 0 2W TC TOMI SMALL BODY 91637 50 2 64531 A1R96 322 3356 00 RES FXD FILM 49 9K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G49901F A1R97 322 3222 00 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM 91637 CCF501G20000F 1898 322 3289 07 RES FXD FILM 10K OHM
34. 1R20 1R22 1R24 1R25 1R26 1R27 1R28 1R29 1R30 1R31 1R32 1R33 1R34 1R35 1R36 1R37 1R38 1R39 1R40 1R41 gt DD SF BR BR BRR a N 1R49 1R50 1R51 1R52 1R53 1854 1855 1856 1857 1858 8 10 Serial Discont d Serial no effective Tektronix Part Number 315 0471 03 322 3097 00 322 3001 00 322 3248 00 322 3329 00 322 3097 00 322 3097 00 322 3452 00 322 3300 02 322 3344 00 315 0470 03 315 0103 03 322 3385 00 322 3452 00 322 3300 02 322 3222 00 322 3162 00 322 3222 00 322 3034 00 315 0226 01 315 0471 03 315 0103 03 322 3121 00 322 3402 00 315 0471 03 315 0471 03 311 2239 00 322 3001 00 322 3385 00 322 3239 00 311 2239 00 322 3001 00 322 3260 00 322 3001 00 322 3001 00 322 3260 00 322 3322 00 322 3001 00 322 3034 00 311 2239 00 Description RES FXD CMPSN 470 OHM 5 0 25W RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD FILM 3 74K OHM 1 0 2W TC TOTAPED amp RES FXD FILM 26 1K OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD FILM 499K OHM 1 0 2W TC TOMI S MALL RES FXD FILM 13K OHM 0 5 0 2W TC 12 RES FXD FILM 37 4K OHM 1 0 2W TC TOMI SMALL BODY RES FXD CMPSN 47 OHM 5 0 25W RES FXD CMPSN 10K OHM 5 0 25W RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES FXD FILM 499K OHM 1 0
35. 760A 760D 760N 14 Check Bar Crosstalk 15 a Connect the leveled audio signal generator output to the LEFT AUDIO INPUT and set SELECT to AUX Set the leveled audio signal generator for the following output Output Sine Wave Frequency 1 kHz Output Level 760 4 2 Vrms 7600 5 5 Vims 760 9 8 Vims that none of the RIGHT AUXILIARY bar segments lit Move the input from the LEFT to the RIGHT AUDIO INPUT CHECK that none of the LEFT or AUXILIARY bar segments are lit Move the input from the RIGHT to the AUXILIARY AUDIO INPUT CHECK that none of the LEFT or RIGHT bar segments are lit Check Third Bar Selection a Connect the output of the leveled audio signal generator to the LEFT and RIGHT AUDIO INPUTS and ensure there is no input to the AUXILIA RY AUDIO INPUT Set the audio generator output level to 775 mV ms 1 55 mV for 7600 760N Set the SELECT control to AUX and PEAK HOLD to ON CHECK that no segments of the third bar are lit Set the SELECT control to L R SUM 2 CHECK that the third bar is at the same level as the LEFT and RIGHT LED bars Set the SELECT control to L R DIFF 2 CHECK that no segments are lit on the third bar 760D and 760N only Reset the Input Termination Sensitivity and Orientation jumpers to fit your application Factory set positions are Input Sensitivity Input Termination INF Display Orientation Sound Stage See Figure
36. 760D 760N L indicates signal amplitude from the LEFT channel input R indicates signal amplitude from the RIGHT channel input L R indicates monaural amplitudes and in phase left and right signal amplitudes L R indicates out of phase left and right signals A pattern display oriented along this line is poorly suited for monaural reception Phase Marks and Phase Tangent Lines are used in conjunction with one another to make system phase error measurements This procedure is explained later in this section All other graticule markings are used for performance verification and adjustments in SECTION 5 PERFORMANCE CHECK AND CALIBRATION The three 100 segment LED bars allow direct readout of the signal levels Two of the bars are dedicated to the left and right channels while the third bar can be switched to display L R sum or L R difference of the input voltages or to display the level of AUXILTAR By dividing Left Right by two the third bar will read the same as the left and right bars do when the two channels are of the same phase and amplitude The standard 760A the 760D DIN scale and the 760N Nordic scale employ different scales and resolutions for the LED bars as described below 760A The scale is dB linear between 8 and 20dB with scale marks every 4 dB Below 20 dB the scale is progressively tapered to 45 dB with marks every 5 dB Above 20 dB each LED segment represents 0 4
37. 982 HARISON ELECTRIC CO LTD OLUA3 PHILIPS COMPONENTS 00779 AMP INC 01295 TEXAS INSTRUMENTS INC SEMICONDUCTOR GROUP 04222 AVX KY OCERA DIV OF AVX CORP 04713 MOTOROLA INC SEMICONDUCTOR PRODUCTS SECTOR 09353 C AND K COMPONENTS INC 1CH66 PHILIPS SEMICONDUCTORS 1 566 MAXIMINTEGRATED PRODUCTS INC 760A 760D 760N Address LUDMILLASTRASSE 23 4300 5 RACINE AVE 100 TRI STATE INTERNATIONAL SUITE 290 1FAIRCHILD AVE 3910 INDUSTRIAL AVE 300 2 AVENUE WEST 19500 SW 90TH COURT PO BOX 1030 17145 SW ALEXANDER POSTBUS 90050 6 CRESSWELL PARK BLACKHEATH 2269 SAW MILL RIVER ROAD PO BOX 127 1600 FEEHANVILLE DRIVE 565 W GULF ROAD 3000 LEWIS amp CLARK WAY SUITE 2 115 NE CUTOFF PO BOX 2036 9 B FADEM ROAD 998 FIRST EDGE DRIVE 16335 180th 9775 TOLEDO WAY 3000 LEWIS AND CLARK HWY 5 CHOME IMABARI 100 PROVIDENCE PIKE 2800 FULLING MILL PO BOX 3608 13500 N CENTRAL EXPY PO BOX 655303 19TH AVE SOUTH P 0 BOX 867 5005 E MCDOWELL RD 15 RIVERDALE AVE 811 E ARQUES AVENUE PO BOX 3409 120 SAN GABRIEL DRIVE City State Zip Code 8300 LANDSHUT GERMANY CHICAGO IL 60609 3320 LINCOLNSHIRE IL 60015 PLAINVIEW NY 11803 COEUR D ALENE ID 83814 SEATTLE WA 98119 TUALATIN 97062 ALOHA OR 97007 5600 PB EINDHOVEN THE NETHERLANDS LONDON SE ENGLAND ELMSFORD NY 10523 MOUNT PROSPECT IL 60056 ARLINGTON HEIGHTS IL 60005 VANCOUVER WA 98601 WORCHESTER
38. L HAGC gt lt gt PHLED PEAKHOLD gt 5V 5V 5V 5V 5V 1 Manual 9 5 777 6 40 12 EXPAND SCALE gt R158 R157 R170 R169 R168 SS 10 0K 10 0K 10 0K 10 0K 10 0K 12V 7 CAL J419 12V neoa CONNECTS M Q603 TO P320 4 R604 ON CRT R40 59 180 419 20K 1 3 25 4 T ur Q604 12V 1 R603 100 760A 760D 760N STEREO AUDIO MONITOR PART OF A3 MAIN BOARD MATRIX AND AGC CONTROL LOGIC schematic diagram has an alphanumeric grid to assist locating parts within that diagram 760A 7600 760N Schematic Diagram lt 5 gt Component Locator Chart Assembly A1 Comp Diag Comp Diag Comp Diag Comp Diag No Loc No Loc No Loc No Loc C510 E3 0769 95 R682 R798 G2 C570 C4 Q776 G3 R683 A2 R858 G4 C573 B5 R861 H4 C574 B4 0795 G2 R684 B2 R863 G4 C575 A4 Q861 G4 R685 0864 64 R686 R864 G5 C578 A4 Q865 G4 R687 B1 R865 G5 C581 A1 2883 62 R688 R866 G5 C584 B1 R867 G4 586 1 Q884 G1 R693 D2 R868 D4 C587 B2 Q885 G2 R694 D2 Q886 G1 R720 D3 R875 E4 C588 C1 R759 G5 R876 4 616 D3 R471 B1 R760 H4 R877 618 D3 R473 B2 R878 F3 C695 D1 R565 B4 R761 G5 R881 G1 C712 R566 B4 R767 H2 R568 4 769 04 R882 H C768 D4 R770 D4 R887 G1 C772 B4 R576 A4 R771 D4 R888 G1 C776 G3 R577 A4 R889 D C778 F4 R580 A1 R772 G5 R895 E2 C785 B1 R582 A1 R773 G5 R896 E2 R583 A1
39. OUTPUT UV Tr AUF 560UF 506 SHUTDOWN PULSE x Y R CR13 7 y WIDTH 7 7 C35 17 2 00 CR19 MODULATOR a 0 OHM E css 77 77 SWITCHER SNUBBER Us C50 CR27 CR25 UC3842 ATUF K 1 comp REF rae c H NOT INSTALLED _L u 2 vec R81 7 100 CROWBAR LM393 3 178 09 49 9K ISEN P 5V 24 es RT CT 2 4 R82 R90 1 1 200 4 99K 24K CR20 BOUNDARY vrs Z Aa i 2 5 doo lt tis FOCUS 2 22 1 A4 Z 3 7 4 1 77 nc 4 CONNECTS 100 TO J153 R101 R86 5 sos 01UF n n toov 5 5 2 n 7218221 v 8 6 Qo NG 5 15v 7 amo lg BOARD R88 C59 ur Ne II px ERROR 40V 9 9 NC GDS o 10 e eres 5 FEEDBACK AMPLIFIER 18 0 10 0 2 NC TRANSFORMER E o C52 1 DRIVER 10095 O1UF 5VC 5VC R69 5VC C41 o R68 SZ cree C40 R71 10 00K 5V AF 178 nere 221K a 5 7 1 IN 100K FRONT R95 U4A C45 R99 PANEL 453 5VC 7415221 ATUF C61 CR29 L cae Is 100K ATUF 16 2 3 T AUF 6 10V var 5 ADJUST zen ano 8 Oe asic 4S R78 id 4 99K RX R77 777 3 74K 3 v 100 10 00K I 1 idi 13 i 10509 B e Da 75 C60 4 H 4 99K AUF aac
40. Power Supply Outputs Focus Amplifier Grid Drive Circuit Z Axis Amplifier CR4 is high voltage rectifier Filter capacitors C4 and C8 work with CR4 to provide 2530 V to the CRT cathode Ul is a four times multiplier providing 11 kV to the CRT anode Q1 and Q2 form an operational amplifier that sets the voltage at the bottom of the focus divider The front panel FOCUS pot determines the voltage at the bottom of the focus divider The Center Focus control R11 is set for optimum beam focus as viewed on the CRT with the front panel FOCUS control set to mid range Once the Center Focus adjustment has been set adjusting the front panel FOCUS control changes the voltage at the bottom end of the divider and consequently the voltage on the CRT focus anode The cathode of the CRT is at 2750 V potential with the grid coupled to Z Axis Amplifier by the Grid Drive circuit The grid is approximately 75 V negative with respect to the cathode The 200 Vp p sine wave present at the cathode of is input to the Grid Drive circuit where it is clipped for use as CRT control grid bias The sine wave from the cathode of is coupled through R47 to a clipping circuit consisting of CR5 and CR6 Clipping level for the positive excursion of the sine wave is set by the CRT Bias adjustment R58 The negative clipping level is set by the front panel INTENSITY control through the Z Axis Amplifier The clipped sine wave is couple
41. RES FXD FIL 9 31K OHM 1 0 2W TC TOMI S MALL BODY 4 455K OHM 0 1 0 125W TC 19 15K OHM 0 1 0 125W TC T9MI RES VAR NONWW TRMR 20K OHM 20 0 5WLINEAR RES NTWK FXD FI 10K OHM 20 9 RES RES FXD RES FXD RES FXD METAL FIL RES FXD FILM 3 24M ETAL FIL 10K OHM 196 0 2W TC 2100 PPM ETAL FILM 10K OHM 196 0 2W TC 2100 PP M 4 75K OHM 196 0 2W TC 100 OHM 1 0 125W TC TOMI RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM RES FXD RES FXD METAL FIL RES FXD METAL FILM 10K OH RES VAR TRMR CERMET 20K OHM 20 0 5 0 197 SQ SIDE UST RES FXD METAL FIL RES FXD METAL FIL RES FXD RES FXD METAL FIL RES FXD METAL FIL RES FXD METAL FILM 10K 195 0 2 TC 100 PPM ETAL FILM 10K RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM E E ETAL FILM 4 75K OHM 196 0 2W TC 100 RES FXD FILM 604 OHM 190 0 2W TC 5 ALL BODY 10K OHM 196 0 2W TC 2100 196 0 2W TC 2100 PP 10K OH 10K 196 0 2W TC 2100 196 0 2W TC 2100 PPM 196 0 2W TC 2100 PP 10K OHM 196 0 2W TC 2100 PPM 10K OHM 196 0 2W TC 2100 RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FIL RES FXD FIL RES FXD FIL 10K OH 10K OH OHM 0 1 0 2W TC 19 T amp R SM BODY BODY BODY 10 1 0 2W TC 19 T amp R S 10 1 0 2W TC 19 T amp R S RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD FIL RES FXD
42. Section 9 Diagrams contains servicing illustrations These include adjsutment locations circuit board part locations a block diagram schematic diagrams and waveforms Parts locating tables are included that cross reference the circuit board illustrations and the schematic diagrams Section 10 Replaceable Mechanical Parts List includes ordering information and part numbers for all replaceable mechanical aprts This parts list is referenced to an exploded view mechanical drawing Also included are lists of standard and optional accessories Product For application oriented questions about a Tektronix measure Support ment product call toll free in North America 1 800 TEK WIDE 1 800 835 9433 ext 2400 6 00 a m 5 00 p m Pacific time Or contact us by e mail tm_app_supp tek com For product support outside of North America contact your local Tektronix distributor or sales office Service Contact your local Tektronix distributor or sales office Or visit Support our web site for a listing of worldwide service locations http www tek com For other In North America information 1 800 TEK WIDE 1 800 835 9433 An operator will direct your call To write us Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 760A 760D 760N ss Introduction Specifications a Section 1 Introduction and Specifications Introduction The 760A Stereo Audio Monitor is a simple yet accurate tool tha
43. characteristics for peak program meters 760A EBU 3205 IEC 268 10 and IEEE Proposed PPM specification 7600 DIN 45 406 760N Nordic Technical Recommendation Table 1 1 shows the peak bar indication when an isolated tone burst of a given duration is applied The response shown is relative to the indication for a continuous tone of the same amplitude The burst must contain at least 5 cycles which requires a frequency of at least 10 for the shortest bursts 1 2 760 760D 760 Introduction Specifications Return Time Rear Panel Safety Standards 760A 760D 760N Table 1 1 Response Time Response dB 0 05 2 0 5 4 0 75 9 10 17 2 0 1 05 2 41 0 4 10 0 4 15 2 0 Return Time 15 the elapsed time for the reading to decay specified amount after the abrupt removal of a tone See Table 1 2 Table 1 2 Return Time Inst 760 7600 760 Return Time 2 8 0 3 seconds to fall 24 dB 1 5 0 2 seconds to fall 20 dB 17 0 3 seconds to fall 20 dB The rear panel AUDIO INPUTS are female XLR connectors with balanced bridging and jumper selectable input sensitivity and termination This product is designed and tested in accordance with the requirements for industry safety standards These standards include the following UL1244 Second Edition Standard for Electrical and Electronic Measuring and Testing Equipment ANSI 39 5 Safety Requirements for Electrical
44. 00 CAP F XD CER DI 15000P F 1096 200V 04222 02 153 8 6 760A 760D 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Mir Number Part Number effective Discont d amp Description Code Mfr Part Number A1C23 285 1328 00 CAP FXD PLSTC MTLZD FILM 0 01UF 5 2000V POLYPROPY 1913 FKP1 01 2000 5 LENE 1 25X 95 A1C24 290 1310 00 CAP FXD ALUM 10UF 20 160V ESR 24 9 OHM 0 1 5 5 2 100 120HZ 20C LS 20 200 INCH 13X20MM 105C 5000HRS A1C25 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 1 27 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A1C28 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 1 29 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C30 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C31 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C32 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C33 290 1310 00 CAP FXD ALUM 10UF 2096 160V ES R 224 9 0 1 5 CEJSM2C100 120HZ 20C LS 20 200 INCH 13X20MM 105C 5000HRS 1 34 290 1310 00 CAP FXD ALUM 10UF 20 160V ESR 24 9 OHM 0 1 5 5 2 100 120HZ
45. 1 Front Panel 2 1 Rear Panel Connectors evo eer NEN rn 2 2 CERT Display aan RS PE ERN E RACER 2 3 Display 2 3 2 822 AE EO n 2 4 een A E ein re e OR RU 2 5 Using The 760A 7600 760 2 6 Initial Alignment 4 43 32 aa CR CR 2 6 Level 2 7 System Phase Error 6 2 7 Energy Distribution 2 8 Monaural Compatibility 2 9 Polarity Reversaly 0 2 aq AM e A CLR CHOR us 2 9 CHpPIns es Arts awa ge Seance eee ne 2 10 Section 3 Installation 3 1 Electrical Installation 3 1 Power Source Cv beu REED NS 3 1 Mains Frequency and Voltage Ranges 3 1 Changing Input Sensitivity Standard 760A only 3 1 User Definable Input Sensitivity Standard 760A only 3 2 Changing Input Termination 3 2 Changing Display Orientation 3 2 Contents Maintenance 4 eb I pasaqa stew qaq S
46. 20 mA Excessive current draw can be caused by CR11 U2 High Volts Power Supply Connect the negative output from the 20 VDC Power Supply to TP1 Connect the positive output to W2 40 V The circuit should draw less than 20 mA Excessive current draw can be caused by CR14 or Q6 High Volts Power Supply Connect the positive output from the 20 VDC Power Supply to Connect the negative output to 15 V The circuit should draw less than 20 mA Excessive current draw can be caused by CR12 Connect the negative output from the 5 VDC Power Supply to Connect the positive output to W1 5 V The circuit should draw less than 20 mA Excessive current draw be caused by CR13 or Q1 and Q2 High Volts Power Supply 4 Control Circuit Check a 760A 7600 760N Connect the negative output from the 20 VDC Power Supply to 2 Connect the positive output to the cathode of CR17 Short C47 with a clip lead Connect the oscilloscope probe ground to TP2 4 9 Maintenance b Table 4 3 lists the signal present in a properly functioning control circuit Table 4 3 Control Circuit Test Points Circuit Location Signal U5 pin 1 Approximately 5 VDC U5 2 Approximately 2 VDC U5 pin 3 0v U5 pin 4 80 kHz triangle wave 2 Vp p U5 pin 6 80 kHz square wave 18 Vp p U3 pin 1 80 kHz square wave 5 U3 pin 2 2 1 VDC U3 pin 6 2 9 VDC U3 pin 7 Approximately 5 VD
47. 20C LS 20 200 INCH 13X20MM 105C 5000HRS A1C35 290 1267 00 CAP FXD ALUM 560UF 2096 50V ESR 0 40 OHM 100KHZ 20C 5 1 561 7 A1C36 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 561 7 A1C37 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 561 7 A1C38 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C39 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA 1 40 281 0772 00 CAP FXD CERAMIC MLC 4700P F 1096 100V 0 100 X 04222 5 101 472 AlC4l 281 0563 00 CAP FXD CERAMIC MLC 0 47UF 2096 50V 0 150 X 0 290 04222 5 305 474 A1C42 290 1267 00 CAP FXD ALUM 560UF 20 50V ESR 0 40 OHM 100KHZ 20C 5 CEEFM1H561M7 A1C43 281 0563 00 CAP FXD CERAMIC MLC 0 47UF 2096 50V 0 150 X 0 290 04222 5 305 474 1 44 285 1331 00 CAP FXD MTLZD 0 47UF 5 400V 1913 54 47 400 5 A1C45 281 0563 00 CAP FXD CERAMIC MLC 0 47UF 2096 50V 0 150 X 0 290 04222 5 305 474 A1C46 281 0773 00 CAP FXD CERAMIC MLC 0 01UF 1096 100V TK1743 CGB103KEX A1C47 281 0563 00 CAP FXD CERAMIC MLC 0 47UF 2096 50V 0 150 X 0 290 04222 SA305bE474MAA A1C48 281 0809 00 CAP FXD CERAMIC MLC 200 PF 596 100V 0 100 X 0 170 04222 SA101A201 AA A1C49 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A1C50 281 0563 00 CAP FXD CERAMIC MLC 0 47UF 2096 50V 0 150 X 0
48. 40V 40V NOT INSTALLED R888 R881 6 19K 6 19K J886 4 BROWN 1 4 BLUE 2 R887 R882 100 100 12V Q886 Q884 12V 12V R601 0885 Q883 20K VERTICAL VERTICAL GAIN R787 R786 2 43K 5K R788 R785 1 82 1 82K 0795 0695 R794 R798 2 00K 100 R797 PS 100 249 lt gt R767 19 10 0K INTENSITY R776 3 92K CR790 CR791 U880B ng h K BLANKING gt 1458 5 N MESS C5 5 0776 220UF TP885 1 R780 R781 10 0K 1 00K Z AXIS DIMMING 12V TP866 8 UB880A pk 1458 CR876 1 b 2 R779 10 0K 12V R878 R877 10 0K 1 00K m R863 CHANNEL 572 ntes 1 00M Asse MATCH 9 Li 4 R580 R583 ak 13 C588 RECIN 4 TUF R582 12 1 750 C586 E 10 THDTRM 15 4 TRKTRM C581 22UF Ue TP688 e R471 C584 R682 ar 10 0K 2 2UF 34 0K 8594 C695 VAGC l 8 1 00K 2 2UF R473 i 47 1606 7 Fase R694 2 2 00K 12V R683 R684 A 475 1 00K 20K OFFSET C587 2 2UF 12V 5V 5V R607 R608 100K R609 100K 224K 5V R606 Ts 100K 4 1 2 SEE U612A LM393 47 5K See 6 1 k 001UF R720 20K L C616 GRATICULE C772 R672 22UF 4 75K i Hass 12V 332 R678 Ne R675 1 00M R568 100K 100K GIN GOUT 4 R577 1506 3 570 4 7UF R576 4 J 750 Ha 2 RECAP git voc 118 o 12v
49. 41 426 2103 07 42 331 0496 00 070 5992 05 150 1181 00 43 161 0216 00 44 161 0215 00 760 7600 760 amp Description 5 6 32 X 0 375 PNH STL CDPL T 15 TORX DR 760 ONLY SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15 TORX DR 760 ONLY 5 4 40 X 0 5 PNH STL SHIELD ELEC 0 032 BRASS C26000 0 5 HARD CONN PLUG ELEC MALE W LOCKING ADAPTER SHIELD CKT BD LV PWR SUPPLY SHIELD ELEC ALUMINUM PANEL REAR MOUNTING PARTS SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15 TORX DR END MOUNTING PARTS SCREW MACH 6 32 X 0 50 PNH STL TORX T 15WITH SLOT MANCHET CRT END RUBBER MANCHET 31 5MM THK X 63MM OD 50 5 ID BRACKET CRT BACK 0 062 AL MOUNTING PARTS NUT PL ASSEM WA 6 32 X 0 312 STL CD PL END MOUNTING PARTS CIRCUIT BD ASSY CRT SOCKET BD SEE 10 760A REPL CLAMP LOOP 0 5 ID NYLON 760A ONLY CLAMP LOOP 0 5 ID NYLON 760D ONLY CLAMP LOOP 0 5 ID NYLON 760N ONLY NEOPRENE EXTR CHAN 0 234 X 0 156 SUPPORT SHIELD CRT FRONT PLASTIC STRAP TIEDOWN E 14 0 X 0 091 NYLON SHIELD ELEC MU METAL CRT SHIELD MARKER IDENT MKD HI VACUUM ELECTRON TUBE CRT FINISHED SEE V1 REPL FRAME CHASSIS ALUMINUM SCALE CRT X Y GRATICULE 760 MANUAL TECH INST 760A 760D 760N DIODE OPTO LED RED 626NM 101 ELEMENTLINEAR ARRAY 0 100 SIP COM CATH CABLE ASSY PWR 3 18 AWG 2 5M L BLACK CABLE ASSY PWR 3 0 75MU 2 5MM L GREY EUROPEAN OPTION Al ONLY
50. 5 1 for jumper locations Performance Check Calibration Procedures 16 Check Dynamic Response 760A only Attack Time a b Set 5340 to position 6 and turn off release the PEAK HOLD control Connect the output of the audio signal generator to the LEFT AUDIO INPUT Set the generator frequency to 10 kHz and set the output level for a bar reading of 0 dB top green LED on Set 5340 to position 2 and turn on the PEAK HOLD control Without changing the frequency or output level of the audio generator set it for On Cycles 50 Off Cycles 50 000 Mode Tone Burst CHECK that the peak held reading is between the 4 dB and 4 dB scale marks 0 75 dB with 5340 at position 2 Set S340 to position 3 and change the audio generator On Cycles to 5 Do not change any other generator settings CHECK that the peak held reading is between the 4 dB and 4 dB scale marks 2 0 dB with 5340 at position 3 Decay Time h i Set S340 to position 0 and set the audio generator to On Cycles 10 000 Off Cycles 25 000 CHECK that the bar does not decay below 24 dB at it s lowest point between bursts Change the audio generator Off Cycles to 31 000 CHECK that the bar does decay below 24 dB at it s lowest point between bursts Repeat parts a through k of this step for the RIGHT and then the AUXILIARY AUDIO INPUTS in turn Set S340 to position 0 Reset the Input Termination
51. 6 C4 CR10 6 F1 G2 DS4 6 02 12 Q8 6 E4 R29 7 02 Bi R78 6 B4 J4 R102 6 C2 Mi 760A 760D 760N 4 BOUNDARY IS POWER LINE BOLADON POTENTIAL AND REQUIRES a 5 AN ISOLATION TRANSFORMER 6 TO SERVICE 8 xs 8 1 9 Jg NOT INSTALLED RIO 10 49 LINE RECTIFIER N E AND FILTER TUE MOUNTING 4HC CA OUTPUT FILTERS 7 C56 IMH R102 CLAMP 40H 0220 8 4 J e rm e e gt 15V 1 cae w4 L 644 RV1 E us CR23 CR22 ie A7UF 1 T3 eo RAN 500r RUM es Ly T 4g 90 250V oN x w 5 nus 9 Ly Ly 150K Em R91 R92 2 8 12 cas REAR E 100K 100K ATUH BE CR12 560UF 560UF fea I 42 gt 15 1 1 150K w3 0 OHM 15A CR24 CR21 CR14 10 0 40V ES lm K 5 m 777 777 0 OHM EET oe gt 4
52. CAD PL 55566 4538 632 5 3 760A ONLY 129 1308 00 030175 1 5 5 6 32 X 0 75 HEX STL CAD PL 55566 4538 632 5 3 1600 129 1308 00 030209 1 SPACER POST 6 32 X 0 75 HEX STL CAD PL 55566 4538 632 5 3 760N ONLY 48 343 0013 00 B052743 1 CLAMP LOOP 0 375 ID P LASTIC 06915 E6CLEAR ROUND 760A ONLY CABLE CLAMP 343 0013 00 B030175 1 CLAMP LOOP 0 375 ID P LASTIC 06915 E6CLEAR ROUND 1600 ONLY CABLE CLAMP 343 0013 00 B030209 1 CLAMP LOOP 0 375 ID P LASTIC 06915 E6CLEAR ROUND 760N ONLY CABLE CLAMP 49 211 0720 01 B052743 1 SCREW MACH 6 32 X 0 50 PNH STL TORX T 15WITH 1 211 0720 01 SLOT 760A ONLY 211 0720 01 B030175 1 SCREW MACH 6 32 X 0 50 PNH STL TORX T 15WITH 1 211 0720 01 SLOT 1600 ONLY 211 0720 01 B030209 1 SCREW MACH 6 32 X 0 50 PNH STL TORX T 15WITH 1 211 0720 01 SLOT 760N ONLY 10 6 760A 760D 760N FIG 1 EXPLODED Y N MN H 760A 760D 760N
53. CLEAR IC DIGITAL LSTTL GATES QUAD 2 INPUT W SCHMITT TRIGGER IC DIGITAL HCTCMOS COUNTER 4 BIT UP DOWN DECADE PRESETTABLE IC DIGITAL LSTTL FLIP FLOP OCTAL D TYPE CLEAR IC DIGITAL LSTTL COMPARATOR 8 BIT MAGNITUDE IC DIGITAL LSTTL MISC DUAL RETRIG MONOSTABLE MULTIVIBRATOR IC LINEAR BIPOLAR COMPARATOR DUAL 10US LOW OFFSET LOW POWER IC DIGITAL STTL PLD PAL 16R6 28 5MHZ 180MA MOUNTING PARTS SOCKET DIP PCB FEMALE STR 2 X 10 0 3 CTR 0 210 0 128 TAIL TIN PHOS BRONZE END MOUNTING PARTS IC LINEAR BIFET OP AMP QUAD IC LINEAR BIPOLAR OP AMP DUAL HIGH OUTPUT DRIVE LOW NOISE IC LINEAR BIPOLAR OP AMP DUAL IC LINEAR BIPOLAR OP AMP DUAL HIGH OUTPUT DRIVE LOW NOISE CIRCUIT BD ASSY CRT SOCKET BOARD CONN HDR PCB WIREWRAP MALE STR 1 X 7 0 15 CTR CONN HDR PCB WIREWRAP MALE STR 1 X 4 0 15 CTR CONN HDR PCB WIREWRAP MALE STR 1 X 7 0 15 CTR SOCKET CRT TUBE 1730 SAFETY CONTROLLED CONN CIRC XLR FEMALE 3 POS SAFTEY CONTROLLED MOUNTING PARTS SCREW MACHINE 4 40 X 0 312 PNH STL QUANTITY 2 END MOUNTING PARTS Mfr Code 04713 21014 1CH66 01295 01295 04713 34371 21014 01295 1CH66 01295 01295 01295 64155 80009 00779 04713 01295 01295 01295 80009 22526 22526 22526 OLUA3 82389 TK0435 Mfr Part Number MC34084P LF356N A D C NE572N SN74LS32N SN74LS32N SN74LS221N ICM7555IPA DM7473N SN74LS132N T4HCT190N SN74LS273N S
54. CR566 CR616 CR638 642 CR643 CR658 659 CR742 CR743 CR746 CR747 CR757 CR758 CR780 CR790 CR791 CR846 CR850 CR851 CR852 CR853 CR854 CR855 CR876 4115 4153 4185 9186 9191 9192 9198 9273 9373 9385 9386 9391 9392 9398 9409 9413 9419 9657 9658 9663 9664 9668 9862 9886 1513 0507 9603 0604 Q620 Q695 0761 0766 Diag Diag No oa ans AA eae e AE Co On N N NN O Q S Loc D3 D3 D3 E4 B4 B4 C1 C1 B4 B4 B4 B4 C2 C2 G3 G3 H3 E1 B1 B1 B1 B1 B1 B1 G3 H2 B5 D3 D2 B3 B3 B2 B2 B3 04 04 4 4 B3 E3 A4 H5 D1 D1 B1 B1 B1 H4 H1 E3 Comp No Diag Diag Loc No A IS S IS OI OI O1 O RARAA D 44442 MMM WP No R344 R347 R351 R352 R353 R354 R355 R356 R357 R358 R359 R362 R363 R364 R366 R370 R371 R373 R374 R375 R376 R380 R381 R382 R383 R387 R388 R400 R423 R441 R443 R446 R447 R451 R455 R456 R458 R460 R463 R466 R467 R469 R470 R471 R472 R473 R474 R475 R476 R477 R478 R480 R481 R482 R487 R488 R495 R496 Diag Diag No RARAR BARRA NNO RARAR A ROAR DS 1 C1 C4 C1 C4 C1 C1
55. EXPAND SCALE button 760N System alignment is done at the 0 dB TEST level Both the normal white and the expanded blue scales coincide at the TEST mark Very accurate level settings can be achieved using the blue expanded scale activated by pressing and holding the EXPAND SCALE button NOTE Perform the preceding alignment procedure before making any measure ments to ensure accurate results Phase difference between LEFT and RIGHT sine waves of the same frequency can be measured with the phase marks on the CRT graticule The signals need not have the same amplitude though the measurement is easier if they are approximately equal Adjust the MANual DISPLAY GAIN control to make the edges of the ellipse just touch the Phase Tangent Lines see Figure 2 3 or 2 4 Read the phase difference where the ellipse crosses the axis with the phase marks The longer marks represent 10 increments and the shorter ones represent 57 Figure 2 5 shows a stereo signal with approximately 13 phase error Operating Instructions 2 8 Energy Distribution Figure 2 5 Ellipse with approximately 13 phase error If the ellipse closes to a single line the LEFT and RIGHT channels are in phase as long as the line is within 45 of the L R axis The line may tilt if the amplitudes are unequal A line within 45 of the L R axis indicates the channels are out of phase The 760A s pattern display provides a graphic representation of th
56. Electrical Parts Replaceable Electrical Parts List Cont Component Number A3TP568 A3TP621 A3TP672 A3TP688 A3TP725 745 778 866 885 A3U127 A3U127 A3U127 A3U132 A3U137 A3U137 A3U137 A3U142 A3U146 A3U158 A3U161 A3U167 A3U172 A3U179 A3U208 Tektronix Part Number 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 160 4232 01 160 6134 00 160 6136 00 136 0755 00 156 0913 00 160 4233 01 160 6135 00 160 6137 00 136 0755 00 156 0913 00 156 2819 00 156 0469 00 156 0480 02 156 0858 00 156 0858 00 156 2817 00 156 2818 00 760A 760D 760N Serial no effective Serial No Discont d Name amp Description TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 DIAP 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR T
57. F5 E2 E2 D2 D3 C2 B2 C2 B2 A3 A3 A3 D4 D4 D4 D4 D4 B4 B4 G5 1 1 1 C1 C1 F3 F2 D2 D2 B3 C3 B3 C3 C3 B1 B3 B2 A3 E4 D4 C4 D4 C4 D4 C4 B5 B4 B4 B4 Loc R520 R541 R543 R546 R547 R548 R550 R551 R553 R554 R556 R558 R560 R562 R563 R564 R565 R566 R568 R576 R577 R580 R582 R583 R593 R594 R600 R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R613 R615 R617 R632 R637 R641 R643 R646 R647 R648 R649 R652 R653 R655 R656 R657 R658 R660 R661 R672 cL eR ch ck N N N mo S S S QON b OO O O Q Q Q t Ot C G N S S N N 2 No Diag Diag Loc B5 D1 1 4 C1 C1 C4 C4 C1 C1 F2 C2 D1 C3 D3 D3 B4 B4 C4 A4 A4 A1 A1 A1 C1 D1 H4 H2 G5 G5 H5 2 D2 c3 D3 D3 D2 A3 D4 D1 B3 A4 B4 4 4 4 1 D2 D1 D1 D1 D1 B1 B1 4 R673 R674 R675 R676 R677 R678 R682 R683 R684 R685 R686 R687 R688 R693 R694 R700 R716 R717 R720 R732 R733 R734 R735 R736 R737 R738 R743 R751 R752 R753 R755 R756 R757 R758 R759 R760 R761 R762 R763 R764 R766 R767 R769 R770 R771 R772 R773 R774 R775 R776 R777 R778 R779 R780 R781 R782 R783 Diag Diag No OY 2 a
58. For a ppm line up level is 8 dB below program level This means that if the house level is 4 dBu the level that indicates 0 on a VU meter then the 760A sensitivity jumper should be set 8 dB higher or 12 dBu The line up tone should then read 8 dB See the discussion about ppm vs VU meters under Level Setups in Section 2 A User definable jumper position is provided for installations that use a reference level other than 0 4 8 12 or 16 dBm The following graphs explain the procedure for selecting the proper resistor value so any input level will indicate 0 dB on the bars User definable resistors may be installed at R183 LEFT R383 RIGHT and R658 AUXILIARY if the standard range of input sensitivities previously listed does not fit your needs These resistor positions are already used in the 760D and 760N The following formula can be used to determine the value of resistors needed to achieve a 0 dB indication with your reference level 20K MSET 77962 E 10577 where is the user definable resistor value G is the desired reference level in dBu Once the resistor value is determined and resistors are installed at R183 R383 and R658 move the jumpers on J385 J185 and J657 to the U position This is the factory set jumper position for the 760D and 760N The 760A is set at the factory for Infinite input termination with 600 or 150 termination being jumper selectable The p
59. INPUT and repeat part c of this step 10 MANual Gain CAL Gain and HOLD a Connect the leveled audio signal generator output to the LEFT and RIGHT AUDIO INPUTS CHECK that when the DISPLAY GAIN is varied in its gain range between detents the CRT display size varies with no rotation of the trace Set the DISPLAY GAIN control to CAL and remove the signal from the RIGHT AUDIO INPUT CHECK that the trace extends to the major amplitude mark on the L graticule line Connect inputs to all three AUDIO INPUTS CHECK that when the audio inputs are removed from the 760A two segments at the top of the indicated levels remain lit for approximately three seconds 11 Check Z Axis Dimming a b Connect the leveled audio signal generator output to the RIGHT AUDIO INPUT and set the DISPLAY GAIN control to MANual CHECK that when the input signal is removed the display disappears 12 Check Bar Frequency Response a b Connect the leveled audio signal generator outputs to the LEFT RIGHT and AUXILIARY AUDIO INPUTS and set SELECT to AUX With the EXPAND SCALE push button depressed set the audio signal generator output level so the LEFT bar indicates 760A 8 dB TEST 760D 9 dB 760N OdB TEST CHECK that when the audio signal generator frequency is varied from 20 Hz to 20 kHz and the EXPAND SCALE push button is depressed each bar amplitude changes less than 0 5 dB which is
60. If the new state exceeds the old the comparator signals the PAL through the GREATER line and the PAL responds by again asserting DELAY clocking the new peak value into latch Asserting DELAY also clocks a retriggerable monostable circuit 0436 which has a three second period If the monostable circuit reaches the end of this period without being retriggered it raises the TIMEOUT line high to signal the PAL that it is time to cancel the peak The PAL then asserts GATE clearing the latch In this manner the latch keeps track of the counter state corresponding to the peak to be indicated The circuit indicates peak values as follows As the counter scans the bar the comparator monitors the counter and notifies the PAL via the EQUALS line when the counter state matches the stored peak The PAL then turns on the bar for two clock periods using the BAR ENABLE line lighting two successive bar segments to indicate the value of the stored peak If a stored peak persists for three seconds without being exceeded it is canceled by the monostable circuit If it is exceeded the monostable circuit is retriggered to restart the time out cycle Peaks below 20 dB are prevented from being indicated by the PK BLK line which is controlled by a data line from the scale shaper ROM U132 on diagram 3 A further description of the PAL signals for troubleshooting can be found in SECTION 4 MAINTENANCE Since the LEDs comprising the bar a
61. J385 and J657 therefore only the U positions may be used for the 760D and 760N The inputs may be terminated by 150 600 or gt 20k Q as selected by J192 J392 and J664 for LEFT RIGHT and AUX respectively Theory of Operation MATRIX amp AGC CONTROL 45 Matrix Left and Right signals are added U179 and subtracted in LOGIC 4 U379 to produce L R and L R signals These signals if applied to the CRT will rotate the pattern 45 counterclockwise so that the Left signals are indicated along the left 45 diagonal and Right signals along the right 45 diagonal A vertical line indicates Left and Right signals are equal and in phase mono This orientation makes pattern interpretation more natural The user may bypass the matrix using jumpers J273 and J373 so that Left signals are indicated on the vertical axis and Right signals on the horizontal Equal Left and Right signals Mono are then indicated along the right 45 diagonal a Vertical x ain Low Pass Deflection LEFT T u Amplifier Z Axis Z Axis a Amplifi Inpu Ampi Gain Low Pass Horizontal TY U Control Filter Deflection Amplifier AUX DISPLAY um Inpu GAIN Amplifi SUM DIFF in 45 Orthogonality 51 Matrix Correction LEFT LEFT m LEFT LEFT Dynamic Peak Bar Anode Bar Cathode Response Processor Driver Driver RIGHT m RIGHT
62. PNH STL TK0435 ORDER BY DESC END MOUNTING PARTS 17 1 CIRCUIT BD ASSY MAIN SEEA3REPL MOUNTING PARTS 18 211 0721 00 8 SCREW MACH 6 32X 0 375 PNH STL CDPL T 15TORX DR 1 ORDER BY DESC END MOUNTING PARTS 19 337 3321 00 1 SHIELD ELEC CKT BD 1730 85471 337 3321 00 20 1 CIRCUIT BD ASSY POWER SUPPLY SEE 1 REPL 21 211 0721 00 B050000 B052742 7 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR 1 ORDER BY DESC 760A ONLY 211 0721 00 B052743 6 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR OKBOl ORDER BY DESC 760A ONLY 211 0721 00 B030000 B030174 7 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR 0 01 ORDER BY DESC 760D ONLY 211 0721 00 B030175 6 SCREW MACH 6 32 X 0 375 PNH STL CDPL T 15TORX DR 1 ORDER BY DESC 760D ONLY 10 4 760A 7600 760N Replaceable Mechanical Parts Replaceable mechanical list Cont Fig amp Index Tektronix Serial No Serial No Number Part Number Effective Discont d 211 0721 00 B030000 B030208 211 0721 00 B030209 22 211 0014 00 23 337 3796 01 24 131 3573 00 25 337 3257 00 26 337 3931 00 27 333 3321 03 28 211 0721 00 29 211 0720 01 30 348 1464 00 31 407 4395 00 32 210 0457 00 439 2 2322 34 343 0916 00 050000 052742 343 0916 00 050000 030174 343 0916 00 050000 030208 35 252 0571 00 36 386 4443 00 37 346 0133 00 38 337 4064 00 39 334 1379 00 40 7
63. Position 4 e ADJUST R252 DAC gain on A3 for 5 000 Vdc f Setrotary switch S340 to Position 0 normal operation 760A 7600 760N 5 11 Performance Check Calibration Procedures 155 Ca R252 R253 S340 R 98351 R463 Le R352 TOP A3 MAIN BOARD CAUTION MAINS VOLTAGE CRT 5V GEOM stig BIAS 7 4 15 ADJ R45 R49 58 W1 45V R99 3 15V Fr A1 PWR SPLY BD Figure 5 2 760 Series Adjustment Locations 4 Adjust CRT Bias a Connect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT b Turn the INTENSITY and GRATICULE controls fully counterclock wise c ADJUST R58 CRT BIAS so that the display is just extinguished d Setthe INTENSITY and GRATICULE controls to a desired level e Remove the signal at the LEFT AUDIO INPUT 5 12 760A 7600 760N Performance Check Calibration Procedures 760A 760D 760N f CHECK that the crt is blanked out while 15 no signal applied 5 Adjust Geometry Focus and Astigmatism a a ADJUST R45 GEOM for 35V 1V at pin 1 of J3 Reconnect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT Set the FOCUS control on the front panel so that it is approximately at the center of its range ADJUST R11 CTR FOCUS and R49 ASTIG for the most clearly defined display 6 Adjust Horizontal Position
64. RCVRY 400V 1A 200NS DIODE SIG ULTRA FAST 40V 150MA 4NS 2 DIODE RECT FAST RCVRY 400V 1A 200NS LAMP GLOW 135V MAX 1 9MA C2A T WIRE LEAD LAMP GLOW 135V MAX 1 9MA C2A T WIRE LEAD LAMP GLOW 135V MAX 1 9MA C2A T WIRE LEAD LAMP GLOW 135V MAX 1 9MA C2A T WIRE LEAD FUSE CARTRIDGE 3AG 2A 250V FAST BLOW MOUNTING PARTS CAP FUSEHOLDER 3AG FUSES BODY FUSEHOLDER 3AG amp 5 X 20MM FUSES END MOUNTING PARTS Mfr Code 31942 55680 12969 12969 12969 83701 12969 12969 OLUA3 OLUA3 OLUA3 OLUA3 OLUA3 OLUA3 04713 OLUA3 OLUA3 27014 OLUA3 27014 OLUA3 04713 04713 04713 04713 27014 27014 OLUA3 OLUA3 27014 OLUA3 0J 9R2 0 9R2 0 9R2 0 9R2 71400 61935 61935 Mfr Part Number 185 0 47 K 50 AB B UPL1H100MDH1TD PV122 PV122 PV122 CRVT150 PV122 PV122 1N4936 1N4936 1N4936 1N4936 1N4936 1N4936 MBR10100 1N4936 1N4936 FDH9427 1N4936 FDH9427 BYV96E MUR 460RL MUR460RL MUR 460RL MUR 460RL FDH9427 FDH9427 1N4936 1N4936 FDH9427 1N4936 NE 2Q 11R T NE 2Q 11R T NE 2Q 11R T NE 2Q 11R T AGC 2 FEK 031 1666 TYPE FAU 031 35 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A1J1 A1J2 13 14 16 gt gt gt gt 112 A1L3 A107 108 109 PS ences eae PEDES Tektronix Part Number 131 5338 00 131 4794 00 131 5337 00 131 3392 00 119 1946 00 108
65. RIGHT Dynamic Peak Bar Anode Bar Cathode Response Processor Driver Driver AUX Bar Anode Driver AUX Bar Cathode Driver Dynamic Response 5 Master Clock Circles represent Panel Controls Peak Processor Figure 6 1 760A 7600 760N Block Diagram CRT Orthogonality Correction A small amount of the signal from the horizontal signal path amplitude and polarity adjusted by R463 is applied to the vertical path to correct for small differences in CRT deflection orthogonality 6 2 760A 760D 760N Theory of Operation AGC amp CRT DEFLECTION ANPLIFIERS lt 5 gt LEVEL INDICATORS 760A 760D 760N Trace Rotation A dc current through the trace rotation magnetically corrects rotation Gain Control Logic The signal from the Input Amplifier is full wave rectified in the precision rectifier U462 and filtered and compared by U361 to determine the largest signal The comparator output is combined with AUTO and CAL in U153 a one of eight decoder Depending on the input combination analog switches U172 and U167 select the appropriate signal to be applied to the Gain Control circuit AUTO is the clockwise detent position of the front panel DISPLAY GAIN control and CAL is the counterclockwise detent The manual gain control applies a variable dc voltage to the Gain Control circuit In the CAL detent the voltage is set by an internal pot R262 In the AUTO detent the control volt
66. Sensitivity and Orientation jumpers to fit your application Factory set positions are Input Sensitivity 8 dB Input Termination INF Display Orientation Sound Stage See Figure 5 1 for jumper locations This concludes the 760A 760D 760N Performance Check Procedure 5 10 760A 7600 760N Performance Check Calibration Procedures Calibration Procedure 1 Preliminary Set Up NOTE Unless otherwise stated always set the Leveled Audio Signal Generator kHz sine wave at the following level 760A 775 MV ms 7600 550 mVans 760N 777 a Set display orientation to on Main board 7273 amp J373 to pins 1 amp 2 Use the sound stage graticule even though orientation is in use Set the Input Termination 1192 1392 and 1664 to Inf and the Input Sensitivity 1185 1385 and J657 as shown 760 0 dB 7600 760N U b Set the 760A front panel controls as follows SELECT AUX PEAK HOLD OFF DISPLAY GAIN AUTO 2 Adjust 5 V a Connect the DMM negative lead to GND and the positive lead to W1 5 b ADJUST R99 5V ADJ for 45 0 V 0 5 See Figure 5 2 for adjustment locations 3 Adjust DAC Offset and Gain a Connect the digital voltmeter leads to TP248 DAC output on and analog ground marked A GND b Set S340 on A3 to Position 5 c ADJUST R253 DAC offset on A3 for 0 000 Vdc d Set 5340 to
67. Stage Graticule 2 4 760A X Y Graticule 2 4 Ellipse with approximately 13 phase error 2 8 Strong left content 2 8 Well balanced stereo 2 9 Stereo unsuited to monaural reception 2 9 Severe clipping of stereo signal 2 10 760A 760D 760N jumper locations 3 3 Using foldout pages 4 3 Circuit board locations in the 760A 760D 760N 4 4 Bezelir moval en en ser EU 4 13 Retaining screw locations 4 17 Repackaging 760 7600 760 4 18 Jumper and adjustment locations on the Main board 5 2 760 Series adjustment locations 5 12 760A 760D 760N Block Diagram 6 2 Simplified Level Indicator block diagram 6 4 Pinout of the CRT Socket 6 11 760A 7600 760N Contents List of Tables 760A 760D 760N Table 1 1 Table 1 2 Table 1 3 Table 1 4 Table 1 5 Table 1 6 Table 2 1 Table 3 1 Table 4 1 Table 4 2 Table 4 3 Table 4 4 Table 4 5 Table 5 1 Table 5 2 Table 5 3 Table 7 1 Response Time Lene in 1 3 Retum Time eshe mere em verre DER 1 3 Electrical Characteristics 1
68. The Specifications include refer ences to the corresponding Performance Check steps Section 2 Operating Instructions familiarizes the user with the front and rear panel controls connectors and indicators includes operator familiarization information The Servfice part contains information required by service technicians to install calibrate maintain and troubleshoot the instrument This is included in the remaining sections of the manual Section 3 Installation includes electrical and mechanical installation information The electrical installation information includes operational changes available within the instrument Section 4 Maintenance includes preventive troubleshooting and corrective information Section 5 Performance Check and Calibration Procedures includes information to verify and restore the instrument to meet its specifications The procedures are preceded by list of recommended test equipment xi Preface Contacting Tektronix Section 6 Theory Operation provides an overall block diagram and detailed circuit descriptions The detailed circuit descriptions should be used with the block diagram and schematic diagrams in the foldout pages for specific information about the individual circuits Section 7 Options documents available instrument options Section 8 Replaceable Electrical Parts List includes order information and part numbers for all rep aceable electrical parts
69. U379D U424 U428 U432 U436A U436B U438 U445A U445B U445C U445D U453A U453B U453C U453D U456 U462A U462B Diag Diag Loc No NN PS S S iS mo m MMM WP Da on QO O 9 ARAGON C4 E1 C5 C4 C1 C5 D5 D5 F3 F3 D5 5 D4 E4 F4 E2 F3 F2 H3 H1 A2 E2 C3 C2 G1 G4 G1 G3 G1 G4 G1 F5 E2 C2 A3 E4 C4 C4 02 2 02 04 F1 A1 A1 B1 B1 C1 C4 C2 C1 F2 C2 C2 Comp No U462C U462D U468 U590 U612A U612B 0623 0627 0630 U635A 0635 0638 U645A 0645 U645C U645D U654A U654B U654C U654D U670 U680A U680B U708A U708B U708C U708D U711A U711B U711C U711D U715A U715B U818 U823A U823B U825A U825B U825C U828 U831 U835 U838A U838B U844A U844B U848 U853A U853B U853C U853D U873A U873B U880A U880B U894A U894B Diag Diag No anaw 03 CO 02 02 G G IO IO N N aaa mo S S S N N N N O Q OO b Loc F2 B3 C3 B3 B3 B2 A3 B3 C3 C4 02 2 D1 2 D1 D1 FA 1 1 1 1 4 F4 F3 F3 E1 F2 172 179 165 QR bled 522 nee eng aos EEE 22205 219 a glg C132 U161 exa 146
70. UST T amp R 760D ONLY 8 20 760 760D 760 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R155 A3R155 A3R156 A3R157 A3R158 A3R168 A3R169 A3R170 A3R174 A3R175 A3R176 A3R177 A3R180 A3R181 A3R182 A3R183 A3R183 A3R183 A3R187 A3R188 A3R195 A3R196 A3R247 A3R248 A3R252 A3R253 A3R255 A3R262 A3R263 A3R264 A3R265 A3R274 A3R275 A3R276 A3R277 Tektronix Part Number 311 2230 00 311 2231 00 322 3258 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 07 322 3289 07 321 0816 07 322 3289 07 322 3373 00 321 0748 06 322 3237 00 322 3373 00 322 3254 00 322 3286 00 321 1612 07 321 0603 07 323 0114 00 323 0172 00 315 0275 00 315 0755 00 311 2239 00 311 2239 00 322 3350 00 311 2230 00 322 3265 00 322 3289 00 315 0302 00 322 3289 07 322 3289 07 322 3289 07 322 3289 00 760A 760D 760 Serial effective B030000 B030210 Name amp Description RES VAR TRMR CERMET 500 OHM 20 0 5W 0 197 50 ADJ UST 760 ONLY RES VAR TRMR CERMET 1K OHM 20 0 5W 0 197 50 ADJUSTT amp R 760 ONLY RES FXD METAL FILM 4 75K OHM 1 0 2W TC 2100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM
71. a hazard to property including the product Symbols on the Product The following symbols may appear on the product A A BE CAUTION WARNING Double Protective Ground Referto Manual High Voltage Insulated Earth Terminal viii 760A 760D 760N F eT Service Safety Summary Only qualified personnel should perform service procedures Read this Service Safety Summary and the General Safety Summary before performing any service procedures Do Not Service Alone Do not perform internal service or adjustments of this product unless another person capable of rendering first aid and resuscitation 15 present Disconnect Power To avoid electric shock disconnect the mains power by means of the power cord or if provided the power switch Use Caution When Servicing the CRT To avoid electric shock or injury use extreme caution when handling the CRT Only qualified personnel familiar with CRT servicing procedures and precautions should remove or install the CRT CRTs retain hazardous voltages for long periods of time after power is turned off Before attempting any servicing discharge the CRT by shorting the anode to chassis ground When discharging the CRT connect the discharge path to ground and then the anode Rough handling may cause the CRT to implode Do not nick or scratch the glass or subject it to undue pressure when removing or installing it When handling the CRT wear safety goggles and heavy gloves for protection
72. and Electronic Measuring and Controlling Instrumentation 1984 Draft 11 CSA Electrical Bulletin No 556B IEC 348 Second Edition Safety Standards For Electronic Measuring Apparatus VDE 0871 5 Class B Radio Frequency Interference Suppression of Electrical Equipment and Systems FCC EMI Compatibility Rules Part 15 Subpart J Class A Introduction Specifications Specifications The Performance Requirements listed in Table 13 are warranted over an ambient temperature range of 0 C to 50 C only when the 760A has been calibrated at 25 C 5 following a warm up period of 20 minutes A Performance Check procedure is provided in SECTION 5 PERFORMANCE CHECK AND CALIBRATION PROCEDURES to verify the Performance Require ments listed in the following table Table 1 3 Electrical Characteristics Characteristic Audio Inputs Balanced Bridging Termination Protection Sensitivity 760A 760D 760N CRT Display Automatic Gain Control Control Range Performance Requirement Supplemental Information 210 kQ side Selectable from gt 20 6000 or 1500 Will withstand 50 V peak common mode input dc to 20kHz without damage Gain selectable for 0 dB bar indication for sine waves of 0 4 48 12 and 16 dBu 1 55 V rms for 0 dB indication 1 55 V rms for 6 dB indication internal jumper internal jumper One user definable position available on standard only Perf C
73. and Trace Rotation a Reconnect the signal from the leveled audio signal generator to the LEFT AUDIO INPUT ADJUST The front panel HORIZontal POSition control R600 to center the trace ADJUST The front panel TRACE ROTation control R400 to align the trace with the vertical L R axis 7 Adjust Horizontal Dynamic Stability a ADJUST R777 Horizontal Channel Offset Control on to eliminate any left right motion of the vertical trace as the audio generator is turned on and off NOTE If the audio generator is capable of tone burst operation such as the TEKTRONIX SG5010 it may be set for one second one second off tone burst operation instead of turning the generator on and off 8 Adjust Vertical Position and Orthogonality Move the leveled audio signal generator output to the RIGHT AUDIO INPUT ADJUST The front panel VERTical POSition control R601 to center the trace on the dotted horizontal line 5 13 Performance Check Calibration Procedures 5 14 c ADJUST R463 Orthogonality on Main board to align the trace with the dotted horizontal line 9 Adjust Vertical Dynamic Stability a AD JUST 782 to eliminate updown motion of the horizontal trace as the audio generator is turned on and off If the audio generator is capable of tone burst operation such as the TEKTRONIX SG5010 it may be set for one second on one second off tone burst ope
74. and a voltage reference The 5 V is divided by R69 and R70 to provide 2 5 V to with fine adjustment provided by R99 C40 and R71 determine the gain and frequency response of VR1 VR4 controls overshoot of the 5 V at power up R98 and CR26 provide a minimum operating current for VR1 R68 decouples C39 from Overvoltage protection for the 5V supply is provided by a crowbar circuit formed by Q11 VR3 R13 and R14 The 80 sawtooth waveform at U3 pin 3 trips comparator U3 U3 pin 1 then feeds a trigger pulse to one shot 04 04 pin 13 outputs a 300 ns pulse to the 130 mA current source consisting of Q7 and Q8 When 08 turns on T2 pin 2 is pulled down until CR15 Error Amplifier is forward biased The negative going pulse at T2 pin 2 is peak detected by CR16 and C46 The DC voltage present at the anode of CR16 feeds the pulse width modulator and the Output Under Volt age Shutdown circuit CR29 resets T2 between pulses If the 5 V is below 4 9 V the Error Amplifier will cause the Peak Detector output to go below 2 9 V The output of comparator U3B will pull low and shut down pulse width modulator U5 C47 and R96 delay the operation of U3B long enough for the power supply to power up If the 5 V does not reach 4 9 V 760A 760D 760N Theory of Operation HIGH VOLTAGE POWER SUPPLY lt 7 gt HV Osc and Error Amp 760A 760D 760N within 50 ms of power up U3B will shut down the switcher The power supply will t
75. and the compo nents should be accessible 5 reassemble reverse procedure NOTE When remounting the Front Panel board to the front panel carefully line up the LED bars so they fit inside the in the front panel Disassemble the front panel assembly using the procedure just given and remove the LED bar Install the new LED bar so the end with the three leads closely spaced are at the top of the LED bar socket The LED bar will not work properly if installed backwards To replace a damaged socket unsolder the old socket Notice that there are two sockets for each LED bar Replace the socket with two 20 sockets trimming three pins from either one to provide the 37 pins necessary for the LED bar Remove the following connections P110 and P135 to Front Panel board P153 to Power Supply board P419 trace rotation to CRT P862 to H defl amp and P882 to V defl amp Push the trace rotation lead through its hole in the Main board Remove the knobs from the GRATICULE and ILLUMINATION controls Remove the eight retaining screws See Figure 4 4 for locations 760A 7600 760N Maintenance Power Supply Board Removal and Replacement 760A 760D 760N A Ground strap A1 Power Supply board retaining screws J4 Main board retaining screws Figure 4 4 Retaining screw locations 5 remove the board slide it t
76. available through your local Tektronix field office or representative Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements Therefore when ordering parts it is important to include the following information in your order m Part number m Instrument type or model number m Instrument serial number m Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektronix field office or representative will contact you concerning any change in part number Change information if any is located at the rear of this manual Using the Replaceable Electrical Parts List The tabular information in the Replaceable Electrical Parts List is arranged for quick retrieval Understanding the structure and features of the list will help you find all of the information you need for ordering replacement parts The following table describes each column of the electrical parts list 760A 7600 760N 8 1 Replaceable Electrical Parts Parts List Column Descriptions Column Description 1 Component number The component number appears on diagrams and circuit board illustrations located in the diagrams section Assembly numbers are clearly marked on each diagram and circuit board illustration in the Diagrams section and on the mechanical exploded view
77. both procedures all 760A front and rear panel nomenclature is fully capitalized e g DISPLAY GAIN 760 internal adjustment and jumper names have only the first letter capitalized e g Geometry The following list of test equipment and requirements are the minimum necessary to perform the Performance Check and Adjustment procedures The specific test gear that was used to develop this procedure is listed in parenthesis after each generic test equipment name 1 Leveled Audio Frequency Signal Generator TEKTRONIX SG 505 Opt 2 Balanced Output 50Q impedance Frequency Range 20 Hz to 20 kHz Output Level Range 3 5 MVims to 4 89 Vims Frequency Response 0 1 dB from 20 Hz to 20 kHz 1 kHz reference 2 RMS Voltmeter TEKTRONIX DM 501A Accuracy 2 of reading 20 Hz to 20 kHz 3 Digital Volt Ohm meter TEKTRONIX DM 501A Dc Accuracy 0 5 of reading 12 V to 12 V 4 Test Oscilloscope with Differential Comparator with two X1 probes Adjustment procedure only TEKTRONIX 7704 w 7A13 Common Mode Rejection 1000 1 5 Variable Autotransformer General Radio Metered Auto Transformer W10MT3W If 220 volt operation must be checked a conversion transformer or appropriate 220 volt autotransformer is needed 6 Male XLR adapter cables 3 Manufacture three cables that will interconnect the 760A rear panel XLR connectors with the Leveled and Second Audio Signal Generator outputs XLR pin 1 2 Gnd XLR 2 XLR p
78. dB increment The LED bars are green up to 0 dB and red above that point With the EXPAND SCALE button depressed the scale is expanded by a factor of four and the resolution is increased to 0 1 dB The scale range is 5 dB to 11 dB while the EXPAND SCALE button is being held in as shown by the scale printed in blue The sensitivity for the standard 760A is jumper selectable see SECTION 3 INSTALLA TION 7600 The 760D uses a DIN scale in accordance with DIN 45 406 with a range of 5 to 50 dB The scale is progressively compressed from top to bottom having a resolution of 0 25 dB from 5 to 0 dB and tapering to 2 dB from 40 to 50 dB With the EXPAND SCALE button depressed the resolution is increased to 0 125 dB and the scale range is 5 to 13 dB shown in blue The LED bars are green up to 0 dB and red above that point 1 55 V rms sinusoidal input 6 dBu produces a reading of 0 dB and there are arrows which indicate the 9 dB test level Operating Instructions 760N The 760N uses a scale in accordance with Technical Recommendation N9 of the Nordic broadcast authorities with a range of 15 to 36 dB The scale is dB linear from 15 dB to 24 dB and is progressively compressed to 36 dB with scale marks at 3 dB intervals The resolution of this scale is 0 5 dB from 15 to 24 dB With the EXPAND SCALE button depressed the resolution is increased to 0 1 dB and the scale range is 3 to 6 dB shown in bl
79. o cca 885 o on 0715 Pro 90 00 m D m ib OOo M AN 1894 E 0 8 5 0853 me AS C873 e care dies deas 1828 vest U835 d U848 di Er D 2 4 NS PS S ao 2 2 824 ao o 92 1873 PS 90 0880 a cp co 2 o o o p o 9 ar n OE wm COG REIS R815 1818 90 coe 3 ac aa Duo 853 Of e LS C895 SEA 823 C825 d C874 C881 2886 Static Sensitive Devices A3 Main Board See Maintenance Section Assembly A3 Schematic Diagram lt 1 gt Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag Comp Diag No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc No Loc C125 G3 C261 H3 C338 H3 C450 H4 C535 H2 C663 B1 C748 H4 C894 H5 CR487 5 J391 B4 R281 D3 R455 F3 R700 B5 TP255 05 017909 C2 C127 G3 C262 G3 C343 G3 C453 G2 C538 G4 C670 H5 C753 H2 CR658 J392 B4 R182 D3 R282 456 F2 R496 B4 R751 D1 TP323 D5 03
80. original manner for maximum protection see Figure 4 5 Figure 4 5 Repackaging the 760A 760D 760N 4 18 760A 7600 760N Maintenance For best results save and reuse the package in which your instrument was shipped If the original package 15 unfit for use or not available the instrument as follows 1 Obtain a carton of corrugated cardboard having inside dimensions of six inches or more greater than the dimensions of the instrument This will allow for cushioning Use a shipping carton that has a test strength of at least 275 pounds 2 Surround the instrument with polyethylene sheeting to protect the finish 3 Cushion the instrument on all sides by tightly packing dunnage or urethane foam between the carton and the instrument Allow three inches on all sides for cushioning 4 Seal the carton with shipping tape or an industrial stapler 760A 7600 760N 4 19 Maintenance 4 20 760A 760D 760N Performance Check Calibration Section 5 Performance Check and Calibration Procedures Introduction Required Test Equipment 760A 7600 760N This section of the manual consists of two procedures Performance Check procedure is a guide to verifying warranted specifications of the 760 while the Adjustment procedure when properly performed will result in a 760A that performs as warranted in SECTION 1 INTRODUCTION AND SPECIFICATION Throughout
81. service Customer shall be responsible for packaging and ship ping the defective product to the service center designated by Tektronix with shipping charges prepaid Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products re turned to any other locations This warranty shall not apply to any defect failure or damage caused by improper use or improper or inadequate maintenance and care Tektronix shall not be obligated to furnish service under this warranty a to repair damage resulting from attempts by personnel other than Tektronix representatives to install repair or service the product b to repair damage resulting from improper use or connection to incompatible equipment c to repair any damage or malfunction caused by the use of non Tektro nix supplies or d to service a product that has been modified or integrated with other products when the effect of such modifica tion or integration increases the time or difficulty of servicing the product THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WAR RANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE TEKTRONIX RESPONSI BILITY TO REPAIR OR REP
82. the needed resolution In addition to the normal scale information the ROM also contains the magnified scale actuated by the EXPAND SCALE button Other scales for calibration and service are selected by a special service switch 340 Refer to SECTION 4 MAINTENANCE for information on settings and uses The ROM data outputs are latched by U132 and U142 to synchronize the output data and applied to the DAC U146 is a 12 bit DAC with adjustments provided for gain R252 and offset R253 The DAC output range is from 0 V all LED segments lit when all DAC inputs are high to 5 V all LED segments off with all DAC inputs low The Low Voltage Power Supply converts the mains line voltage 90 250 VAC to supply the power requirements of the instrument The voltages supplied by Low Voltage Power Supply are 40 V 15 V and 5 V LINE ISOLATED AG RECTIFIER LINE SECONDARY SUPPLY VOLTAGES SWITCHER MODULATOR MOSFET CURRENT FEEDBACK PEAK DETECTOR VOLTAGE FEEDBACK ERROR AMPLIFIER 760A 760D 760N Theory of Operation The Low Voltage Power Supply is called a Flyback Switcher When switcher mosfet Q9 is turned on its drain voltage drops to approximately 0 V The current through 350 primary winding of begins ramping up voltages present at all secondaries is such that the rectifier diodes are reverse biased Energy is being stored in the f
83. 0 Set the Input Termination for each AUDIO INPUT to the 150 Q position CHECK that the resistance across pins 2 and 3 of each input is 150 Q 20 Set the Input Termination for each AUDIO INPUT to the INF position 4 Check Bar Graph Accuracy 0 dB 0 3 dB a Connect the leveled audio signal generator output to the LEFT AUDIO INPUT Adjust the signal generator amplitude so that the bar graph s top green LED is just lit CHECK that the signal generator amplitude is within the following limits 760A 748 7 802 1 MVims 775 MVims 0 3 dB 7600 531 4 569 3 mV 550 mV 0 3 dB 760N 750 7 804 2 mV ms 777 20 3 dB Set the audio generator output level to 760A 308 5 mV ms 8 dB TEST 760D 550 mV ms 9 dB arrowhead 760N 777 mV ms 0 dB TEST CHECK the bar level while holding the EXPAND SCALE button in 760A 8 dB 0 3 dB 3 segments 7600 9 dB 0 3 dB 2 segments 760N 04 0 3 dB 3 segments 760A 760D 760N Performance Check Calibration Procedures Check the RIGHT and AUXILIARY bars in the same manner connect ing the input signal to one 760 AUDIO INPUT at a time f 760 only Set S340 to position 6 g CHECK 760 only that each bar indicates 0 0 3 dB 6 segments or less from 0 dB with the combinations of 760A INPUT SENSITIVITY jumper settings and audio signal generator output levels given in Table 5 1 h 760A only Set S340 to position 0
84. 0 00 XSTR SIG BIPOLAR N 40V 200MA 300MHZ AMPL 0JRO4 2 3904 A3Q795 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0 804 2 3904 0861 151 0347 00 XSTR SIG BIPOLAR NPN 160V 600MA 10MHZ 0AMPL 0 804 2 5551 30864 151 0347 00 XSTR SIG BIPOLAR NPN 160V 600MA 100MHZ AMPL 0 804 2 5551 30865 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0JRO4 2 3904 30883 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0 804 2N3904 A3Q884 151 0347 00 XSTR SIG BIPOLAR NPN 160V 600MA 100MHZ AMP L 0 804 2N5551 A3Q885 151 0190 00 XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL 0804 2 3904 A3Q886 151 0347 00 XSTR SIG BIPOLAR NPN 160V 600MA 100MHZ AMPL 0 4 2 5551 A3R122 322 3001 00 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM 91637 501610800 123 322 3001 00 RES FXD METAL FILM 10 0HM 1 0 2W TC 100 PPM 91637 501610800 A3R124 322 3001 00 RES FXD METAL FILM 10 0HM 1 0 2W TC 100 PPM 91637 501610800 155 311 2230 00 8050000 8052828 VAR TRMR CERMET 500 OHM 20 0 5W 0 197 2073 GFO6UT2 501 ML SQ TOP ADJUST 760A ONLY A3R155 311 2231 00 052829 OHM 2096 0 5W 0 197 SQ TOP 2073 GF06UT2 102 120 ADJ UST T amp R 760A ONLY A3R155 311 2230 00 B030000 B030174 RES VAR TRMR CERMET 500 OHM 20 0 5W 0 197 2073 GF06UT2 501 SQ TOP ADJUST 760D ONLY A3R155 311 2231 00 8 030175 RES VAR TRMR CERMET 1K OHM 20 0 5W 0 197 SQ TOP 2073 GFO6UT2 102 M L20 ADJ
85. 0 281 0775 00 290 0297 00 281 0775 00 290 0297 00 281 0775 00 281 0810 00 285 1349 00 285 0808 00 290 0990 01 290 1313 00 281 0775 00 290 0974 03 290 0974 03 760A 760D 760N Name amp Description CAP FXD CERAMIC LC 0 1UF 20 50V Z5U 0 170 CAP FXD CER DI 100P F 5 100V CAP FXD ELCTLT 10U F 20 OVTAPE amp REEL CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 1 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 1 LC 0 1UF 20 50V Z5U 0 1 LC 0 1UF 20 50V Z5U 0 1 CAP FXD CERAMIC CAP FXD CERAMIC CAP FXD PLSTC 0 33 CAP FXD CERAMIC UF 5 50V LC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC LC 0 1UF 20 50V Z5U 0 170 CAP FXD ALUM 4 7UF 20 35V ESR 242 33 OH CAP FXD ALUM 4 7UF 20 35V ESR 242 33 OH CAP FXD CERAMIC MLC 2 2UF 20 25V Z5U 0 40X CAP FXD CERAMIC LC 0 1UF 20 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CER DI 100P F 5 100V CAP FXD ELCTLT 10U CAP FXD CERAMIC CAP FXD ELCTLT 100 CAP FXD CERAMIC CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 1 CAP FXD CERAMIC CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 1 CAP FXD ELCTLT 39U F 20 F 10 OVTAPE amp REEL LC 0 1UF 20 50V Z5U 0 170 UF 20 25VDC CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0
86. 0 1 0 2W TC T9 T amp R SM BODY 91637 CCF501C10001B 760A 760D 760N 8 11 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A1R99 1R101 1R102 1R103 A A A A1T1 A2 A2C355 A2DS11 20511 Un 8 12 Serial Discont d Serial no effective Tektronix Part Number 311 2239 00 322 3068 00 308 0290 00 322 3452 00 120 1695 00 120 1945 00 120 1944 00 214 4085 00 214 4085 00 152 0900 00 156 0067 00 156 1225 00 156 0733 04 156 2524 00 156 1631 01 152 0195 00 152 0195 00 152 0149 00 152 0287 00 152 0287 00 131 0566 00 131 0566 00 131 0566 00 131 0566 00 670 9532 01 281 0775 00 150 1181 00 131 5251 00 150 1181 00 131 5251 00 150 1181 00 131 5251 00 amp Description RES VAR TRMR CERMET 100K OHM 20 0 5W 0 197 RES FXD METAL FILM 49 9 OHM 1 0 2W TC 100 PPM RES FXD WW 8 OHM 596 5W RES FXD FILM 499K OHM 196 0 2W TC TOMI SMALL TRANSFORMER PWR HIGH 3V RESONANT 231V 100V 1MA 2750V 3 3MA 6 3V 86MA XFMR RF PRI 8UH 2 7 0N OFF VERTICALMOUNT PC MT TRANSFORMER RF PRI 88V PRI 15V SEC 40V AT0 385A 5V AT 2A 15V 0 80 IDED PC MOUNT 1 45 X 1 7 X 1 17H TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR MODULE HV 7 5
87. 0 2W TC TOMI SMALL BODY RES FXD FILM 1M OHM 196 0 2W TC TOMI SMALL BODY RES FXD WW 6 3K OHM 1 3W RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD FILM 698 OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 698 OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 1 5K OHM 196 0 2W TC 2100 PPM RES FXD WW 6 3K OHM 1 3W RES FXD FILM 23 2K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 2 55K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 11 8K OHM 1 0 2W TC TOMI S MALL BODY RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PPM RES FXD FILM 6 19K OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD FILM 6 19K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 23 2K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 11 8K 195 0 2W TC TOMI S MALL BODY RES FXD FILM 2 55K OHM 1 0 2W TC TOMI SMALL BODY SWITCH ROTARY DIP BCD 10 POSITION 125 5 PIN GOLD NICKEL GLASSREINFORCED NYLON TERM TEST POINT 0 070 0 220 H 0 063 DIAP 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 0 220 H 0 063 DIAP 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 0 220 H 0 063 DIAP 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 0 220 0 063 DI
88. 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 8 25K OHM 1 0 2W TC 100 RES VAR NONWW CKT BD 20K OHM 10 0 25WLINEAR KNOB GY 0 127 ID X 0 392 OD X 0 4 H RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PP RES FXD METAL FILM 10K OHM 1 0 2W TC 100 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PP RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 1 0 2 TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 1 0 2W TC 100 RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD METAL FILM 10K OHM 196 0 2W TC 100 PPM RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM MET FILM 20K OHM 196 0 2W TC 2100 P PM RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY RES VAR TRMR CERMET 500 OHM 20 0 5W 0 197 SQ TOP ADJUST RES VAR OHM 20 0 5W 0 197 SQ TOP ADJUST RES FXD FILM 3 57K OHM 196 0 2W TC TOMI S MALL BODY RES FXD METAL FILM 221 OHM 1 0 2W TC 100 PPM RES FXD FILM 4 455K OHM 0 196 0 125W TC lt 9 RES FXD FILM 15K OHM 0 1 0 125W TC T9MI RES FXD FILM 150 OHM 1 0 5W TC 10 RES FXD FILM 604 OHM 1 0 5W TC 10 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD METAL FILM 47 5K OHM 196 0 2W TC 2100 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM
89. 00 322 3222 00 322 3350 00 322 3172 00 322 3289 00 315 0205 00 322 3289 00 322 3289 00 322 3289 00 322 3385 00 322 3289 00 322 3289 00 321 0816 07 322 3289 07 321 0816 07 322 3289 07 322 3373 00 321 0748 06 322 3237 00 322 3373 00 Name amp Description RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM MET FILM 20K OHM 1 0 2W TC 100 PPM RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 4 455K OHM 0 1 0 125W TC 19 RES FXD FILM 15K OHM 0 1 0 125W TC T9MI RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PP RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES VAR TRMR CERMET 500 OHM 20 0 5W 0 197 50 ADJUST RES VAR TRMR CERMET 20K 2095 0 5 0 197 SQ SIDE UST 5 20 2095 0 5W 0 197 50 5 UST RES FXD FILM 1M OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 1M OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM RES FXD FILM 43 2K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 604 OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD FILM 2M O
90. 000 CCF50 2 G4993FT 120 1695 00 120 1945 00 129 2074 EC 104 01 02 104 01 02 512556 UA741CP LM393P SN74LS221N UC3842N TL431CLPM 0332125 0332125 1N961BRL OMA0207 OMA0207 OMA0207 OMA0207 670953201 SA105E104MAA QDSP 8838 3 534237 5 QDSP 8838 3 534237 5 QDSP 8838 3 534237 5 150 1291 00 760A 760D 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Number Part Number effective Discont d amp Description A2DS432 150 1286 00 DIODE OPTO LED ASSEMBLY GRN 150 1109 00 IN A2DS434 PART 205432 A2R423 315 0121 00 RES FXD FILM 120 OHM 5 0 25W A2R424 315 0121 00 RES FXD FILM 120 OHM 596 0 25W A2R425 315 0121 00 RES FXD FILM 120 OHM 596 0 25W A2R437 315 0121 00 RES FXD FILM 120 OHM 5 0 25W A2R438 315 0121 00 RES FXD FILM 120 OHM 5 0 25W A2R439 322 3258 00 RES FXD METAL FILM 4 75K OHM 1 0 2W TC 100 A2R451 321 0274 00 RES FXD FILM 6 98K OHM 1 0 125W TC TOMI A2R544 311 2332 00 RES VAR NONWW SPST DOUBLE DETENT 10K OHM 20 0 25W ATTACHED PARTS 210 1435 00 WASHER FLAT 0 254 X 0 311 X 0 016 55 366 1146 00 KNOB GY 0 127 ID X 0 392 0D X 0 466 H END ATTACHED PARTS A2S516 260 2330 00 SWITCH ROTARY 3POSITION ATTACHED PARTS 366 1146 00 KNOB GY 0 127 ID X 0 392 0D X 0 466 H 214 4725 00 SPRING COMPRESSION SPRING 0 026 302 STAINLESS STEEL 0 313
91. 0000F GFO6UT2 203 ML CCF501G 35700F RB20FX221E CCF501G 18200F GFO6UT2 502 ML CCF50 2 G2431FT CCF501G 18200F GFO6UT2 102 ML 5043E D5K360F CCF501G 20000F CCF501G 100R OF CCF501G 100R OF CMF 55 116 G 600 CCF50G 10001F CCF50G 10001F CCF501G 10R 00 5043E D221K0F CCF501G 100R OF CCF50G 10001F CCF501G 100R OF CCF501G 100R OF 55 3 24 MEGO CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF501G 18201F CCF50 2 G4751FT 8 27 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R855 A3R856 A3R858 A3R861 A3R863 A3R864 865 A3R 866 A3R867 A3R868 A3R875 A3R876 A3R877 A3R878 A3R881 A3R882 A3R887 A3R888 A3R889 A3R895 A3R896 35340 151 248 255 323 351 357 454 548 551 A3TP552 A3TP554 8 28 Serial Discont d Serial no effective Tektronix Part Number 322 3282 00 322 3481 00 308 0549 00 322 3097 00 322 3097 00 322 3178 00 322 3178 00 322 3210 00 308 0549 00 322 3324 00 322 3232 00 322 3296 00 322 3193 00 322 3289 00 322 3269 00 322 3097 00 322 3097 00 322 3269 00 322 3324 00 322 3296 00 322 3232 00 260 2233 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 214 4085 00 amp Description RES FXD FILM 8 45K OHM 1
92. 0221 0 CCF50G10001F B B B B 8 23 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R546 A3R547 A3R548 A3R550 A3R551 A3R553 A3R554 A3R556 A3R556 A3R556 A3R556 A3R556 A3R556 A3R558 A3R560 A3R562 A3R563 A3R564 A3R565 A3R566 A3R568 A3R576 A3R577 A3R580 A3R582 A3R583 A3R593 A3R594 A3R600 A3R601 8 24 Tektronix Part Number 311 2230 00 322 3282 00 322 3314 00 322 3350 00 322 3222 00 311 2236 00 322 3481 00 311 2230 00 311 2231 00 311 2230 00 311 2231 00 311 2230 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3385 00 322 3469 00 322 3306 00 311 2232 00 322 3469 00 321 0303 00 322 3385 00 322 3193 00 311 2269 00 311 2269 00 Serial no effective B050000 B052829 B030000 B030175 B030000 B030210 Serial No Discont d B052828 B030174 B030209 amp Description RES VAR TRMR CERMET 500 0HM 20 0 5W 0 197 50 ADJUST RES FXD FIL 8 45K OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 18 2K OHM 196 0 2W TC 2100 760A ONLY RES FXD FIL RES FXD METAL FIL RES VAR TRMR CER SQ SIDE UST RES FXD FILM 1M OH RES VAR TRMR CER SQ TOP ADJUST 760A ONLY RES VAR TRMR CER ADJ UST T amp R 760A ONLY RES VAR TRMR CER 50 ADJUST 7600
93. 1234 of Subassembly 2 of Assembly 23 List of Assemblies list of assemblies is located at the beginning of the electrical parts list The assemblies are listed in numerical order When a part s complete component number is known this list will identify the assembly in which the part is located Chassis Parts Chassis mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List Mfr Code to Manufacturer table titled Manufacturers Cross Index shows codes names and addresses 8 2 Cross Index of manufacturers or vendors of components listed in the parts list 760A 760D 760N Replaceable Electrical Parts Manufacturers Cross Index Mfr Code Manufacturer D5243 ROEDERSTEIN ERNST GMBH 435 LEWIS SCREW CO 515 EVOX RIFA INC 891 5 TK1155 QUALITY PLSTC ECTION MOLDING TK1352 INTERFACE ELECTRONICS CORP TK1547 MOORE ELECTRONICS INC DIST TK1617 CRAFT FACTORY PLASTICS TK1727 PHILIPS NEDERLAND BV AFD ELONCO 1743 UNITRODE UK LTD TK1913 THE INTER TECHNICAL GROUP IND 2058 CORPORATION OF AMERICA TK2073 TOKYO AMERICA INC 2469 UNITREK CORPORATION 0CVK3 ALLEGRO MICROSYSTEMS INC INTEGRATED CIRCUITS DIV 0GV52 SCHAFFNER EMC INC OHIN5 TOSHIBA MARCON ELECTRONICS AMERICA CORPORATION 0 R03 ZMAN MAGNETICS INC 0 R04 TOSHIBA AMERICA INC ELECTRONICS COMPONENTS DIV 0 R05 TRIQUEST CORP 0
94. 14 04 04 55 1 6 7 97158 5 17 05 05 6 7419221 7415221 1 Ai 18 00 06 19 i B 6 8 id 118 4 9 dA 5 4 22 ez 2 ape 1 3 1 7 z SCALE SHAPER E U828 w LOOK UP TABLE Er 7 5M Q ms 100K U137 U142 U146 2764 7415377 DAC80P GAIN 0 10 1 3 B12 6 3 REF 2 8 v 6 8 a2 Li3 02 Qe B10 GAINADJ 7 15 2 5 61 p 6 Sb B8 iout H 4 5 A5 ps HZ 14 ps Qs B7 m MN 46 6 18 17 pe 06 B6 REFIN m Raul Lu 3 Jaz H2 18 ip Q B5 55 25 B4 OFFSET 17 R247 DOWN COUNTER a 9 q 2 sc 20 an 23 ln B1 MSB sc He 100K TISON 4 gt OFFSET 22 28 vec 12V 5V pam E 20 Hak 5 ou 4729 L 5 uiis NC cock M dk 7415377 1UF 1 a ah AS U127 1 9 10 18 875 2764 62 2 OG 10 11 18 z AT D Q7 5V 5V 5V 0 09 Lam E 13 9 A2 s 01 ial pe RCO_ TP725 7 15 13 04 MXIMN 4 16 eH a R336 R337 R344 8 as p H 8 o 9 gt 10 0K 10 0K 10 0K 55 2 45 D5 Ls H er rd or 19 3 o ao 1 oo t I Loo 4 2 10 11 et EXPAND SCALE gt 442 m re 0 87 pam 28
95. 1412 00 108 1412 00 108 1412 00 108 0205 00 151 0749 00 151 0190 00 151 0350 03 151 0347 02 151 0350 03 151 0476 00 214 3848 00 151 0190 00 151 0190 00 151 1286 00 210 0406 00 211 0008 00 214 3841 00 151 0350 03 151 0528 00 303 0155 00 301 0225 02 303 0155 00 303 0155 00 303 0155 00 322 3385 00 322 3097 00 311 1256 00 760 7600 760 amp Description CONN HDR PCB WIREWRAP MALE STR 1X 7 0 15CTR 0 230 MLG X 0 285 TAIL 30 GOLD SIDE BYSIDE STACKABLE CONN HDR PCB MALE STR 1 X 2 0 1 CTR 0 235MLG X 0 112 TAIL 30GOLD 0 035 DIA PCB SAFETY CONTROLLED CONN HDR PCB WIREWRAP MALE STR 1 X 4 0 150 CONN HDR PCB MALE STR 1 X 10 0 1 CTR 0 230 FILTER RFI 1A 250V 400HZ W PC TERMINAL INDUCTOR FXD P OWER 4 7UH 2096 I 3 7A R DC 0 017 OHM Q gt 10 SRF gt 30MHZ BOBBIN INDUCTOR FXD POWER 4 7UH 20 1 lt 3 7A RDC 0 017 OHM Q gt 10 SRF gt 30MHZ BOBBIN INDUCTOR FXD POWER 4 7UH 20 1 lt 3 7A RDC 0 017 OHM Q gt 10 SRF gt 30MHZ BOBBIN INDUCTOR FXD POWER 1MH 5 IDC 400 MA RDC 2 12 OHM Q gt 47 0 25MHZ XSTR SIG BIPOLAR PNP 400V 500MA 50MHZ AMPL XSTR SIG BIPOLAR NPN 40V 200MA 300MHZ AMPL XSTR SIG BIPOLAR PNP 150V 600MA 100MHZ AMPL XSTR SIG BIPOLAR NPN 160V 600MA 100MHZ AMPL XSTR SIG BIPOLAR PNP 150V 600MA 100MHZ AMPL XSTR PWR BIPOLAR NPN 100V 3 0A 3 0MHZ AMPL ATTACHED PARTS HEAT SINK SEMIC XSTR TO 220 ALUM CLIP ON BLK ANDZ END ATTACHED PARTS XSTR SIG BIPOLAR NPN 40V 200MA 300M HZ A
96. 1637 TK2073 TK2073 TK2073 TK2073 TK2073 TK2073 91637 91637 91637 91637 91637 91637 91637 91637 91637 91637 TK2073 91637 19701 91637 91637 TK2073 TK2073 Mfr Part Number GFO6UT2 501 ML CCF501G 84500F CCF501G 18201F CCF502G 4322FT CCF501G 20000F GFO6UT2 203 ML CCF501G 10003F GFO6UT2 501 ML GFOGUT2 102 M 120 GFO6UT2 501 ML GFOGUT2 102 120 GFO6UT2 501 ML GFOGUT2 102 M 120 CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF501G 10002F CCF501G 75002F CCF50 2 G1502F GFO6UT2 202 ML CCF501G 75002F 5043ED14K00F CCF501G10002F CCF501G 10000F GFO6VT2 203 ML GFO6VT2 203 ML 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Mir Number Part Number Name amp Description Code Mfr Part Number A3R602 322 3097 00 RES FXD METAL FILM 100 OHM 196 0 2W TC 2100 PPM 91637 CCF501G100R0F 603 322 3097 00 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 CCF501G100R0F A3R604 301 0101 00 RES FXD FILM 100 OHM 596 0 5W TK1727 SFR302322 182 A3R605 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM 91637 CCF501G 10000F A3R606 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 501610002 A3R607 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W
97. 170 CAP FXD ELCTLT 39U 10 LC 0 1UF 20 50V Z5U 0 170 0 170 LC 0 1UF 20 50V Z5U 0 170 0 170 10V 10V CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC 760A ONLY CAP FXD MTLZD 0 1U CAP FXD PLSTC 0 1U 760A ONLY CAP FXD ELCTLT 10U CAP FXD ALUM 10UF 20 50V 8 X 11MM 105 DEG RDL T amp A F 10 F 20 LC 5 6P F 0 5P F 100V 0 100 X 0 170 5 63 50V 50VTAPE amp REEL CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD ELCTLT 10U CAP FXD ELCTLT 10U F 20 F 20 60VDC 60VDC 120HZ 20C 120HZ 20C Mfr Code 04222 04222 62643 04222 04222 04222 04222 04222 84411 04222 04222 04222 55680 55680 04222 04222 04222 04222 04222 04222 62643 04222 0 1 5 04222 04222 04222 04222 12954 04222 12954 04222 04222 1913 84411 62643 55680 04222 55680 55680 Mfr Part Number SA105E104MAA SA102A101JAA 511D296 SA105E104MAA SA105E104MAA SA105E104MAA SA105E104MAA SA105E104MAA 4 33 5 50 SA105E104MAA SA105E104MAA SA105E104MAA UVX1V4R7MAA UVX1V4R7MAA SR403E225MAA SA105E104MAA SA105E104MAA SA105E104MAA SA105E104MAA 102 101 AA 511D296 SA105bE104MAA CEUSMIE101 SA105E104MAA SA105E104MAA SA105E104MAA SA105E104MAA D39B10K1 SA105E104MAA D39B10K1 SA105E104MAA SA102A5R 6DAA MKS2 1 63 5 TEK34 1049R5 511D296 UETIH100MPHITA SA105E104MAA UVX1H100MAA1TD UVX1H100MAA
98. 1TD 8 15 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial Mfr Number Part Number effective Discont d 8 Description Code Mfr Part Number 570 290 0782 00 CAP FXD ALUM 4 7UF 20 35V ESR 42 33 OHM 120HZ 20C 55680 UVX1V4R7MAA A3C571 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C573 290 0488 00 CAP FXD ELCTLT 2 2UF 1096 20V 2N936 1500225 9020 2 A3C574 290 0488 00 CAP FXD ELCTLT 2 2UF 10 20V 2N936 1500225 9020 2 575 290 0183 00 CAP FXD TANT DRY 1UF 10 35V TANT OXD 0 151 X 0 317 12954 5 5 578 290 0512 00 CAP FXD ELCTLT 22UF 20 15V 2N936 199D226X0015DA1 A3C580 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 581 290 0512 00 CAP FXD ELCTLT 22UF 20 15V 2N936 199D226X0015DA1 A3C584 290 0488 00 CAP FXD ELCTLT 2 2UF 10 20V 2N936 1500225 9020 2 586 290 0183 00 CAP FXD TANT DRY 1UF 10 35V TANT OXD 0 151 X 0 317 12954 AT513A105K035N A3C587 290 0488 00 CAP FXD ELCTLT 2 2UF 10 20V 2N936 1500225 9020 2 588 290 0782 00 CAP FXD ALUM 4 7UF 20 35V ESR 42 33 OHM 120HZ 20C 55680 UVX1V4R7MAA A3C589 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C612 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C616 281 0775 00 CAP F
99. 2 zzi aaa ak 155 0172 0179 IN No R252 Hp N N N xoti E a E 55 gt h bi U142 SEN FID NO LE Ailio N N N Ui N NNN NUN NGN C299 1208 o 0215 o 10217 0127 0132 0137 R253 C262 R262 C267 c ca ac C279 DIE 0223 TP248 C2540 Q 259 N C263 C268 N 9 R351 2 0357 UD NO QV 10 x 4D bid m m m mmm sed SII cj o co DOG OO m a e m m 390 S340 C343 qas asas mm TP323 C332 344 R347 R352 gt C361 C368 U379 c lt N R336 R344 C349 Duo 10 DX o 9 U308 L 0313 U317 C324 C328 C333 R337 C338 m m C468 o xn 0 2 I 0 Casa 445 6453 De C458 C45 pigs sinere 232 3 3 3 3454 95 SANAN eels d J419 zx 5 pole C462 44 C479 490 0445 U453 0456 R400 05405 1424 0428 0432 0836 1458 C469 J413 LN x pi c 55 0462 568 ID als c C570 6578 8590 5 0599 C545 C556 m9 Poo mom n NN RS29 CR536 98545 TP548 8553 1555 556 PR 6588 9810166
100. 20 low WAR GRID DRIVE T 0 47 UF Rea 100K Ras 100 2 77 777 100K 11 15A R63 P o 2 00K ceomerry L cis L c12 R48 T 015UF R43 Co 15A 13 3 01K ie CR6 470 O1UF 77 erst ZN R103 pro C22 100K 2 0 47 UF 8 N N 71 4 C14 100V ci 0150 015UF 9n 910 5 10UF R55 me yn ow 10UF 4 8 O1UF T 777 R47 R44 O ak 777 100K 470 ui 8 QURE 7 15 4 JI N 777 CODES 94 5 ASTIG SZ 2 052 ZN H R57 40VA 51V 22 1 R53 j 6 1 N 777 308 1 1 WHT BLK RED 93 N R39 4 4 FOCUS 470 051 2 WHT BLUE n CR4 VR5 i VR6 830 fee R54 2 N N 4 99K R56 3 WHT GRN A 4 2 4 4 WHT GRAY 12 1st ANODE 25 1 a PIOR 083 R42 R51 L 91 FIL2 777 4 99K 3 150 AUF 77 10 77 J1 2 777 1 BRN RED 2 2 R12 470 m WHT RED 1 14 3 L ce scd WHT BRN 0 R46 6 WHT BLK 77 6 100 E 7 7 330PF It IT 1 Ri HORIZONTAL a 1 5M DEFLECTION 1w GREEN H4 2 RED 5 lt 100V 3 9 CR2 2 53 4 Rit 2215 N 25M 16 100V R2 T 7 5 Z AXIS gt es 475 c5 1 2W BLUE o AMPLIFIER R36 FOCUS VERTICAL C6 2 00K DEFLECTION 2200PF NOT INSTALLED M A10 CRT
101. 28 00 281 0775 00 281 0775 00 283 0789 00 281 0775 00 281 0775 00 283 0623 00 283 0728 00 281 0775 00 283 0789 00 283 0623 00 152 0141 02 152 0141 02 152 0066 00 152 0066 00 152 0141 02 152 0141 02 760A 760D 760 Description CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL CAP FXD CER DI 100P 5 100 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL CAP F XD ELCTLT 2 2UF 10 20V CAP F XD ELCTLT 22UF 20 15V CAP F XD ELCTLT 220UF 20 10V LEADSPACING 0 2 CAP FXD MICA DI 1200P F 196 100V CAP F XD ELCTLT 22UF 2096 15V CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD MICA DI 120P F 196 500V CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 01UF 10 100V CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD ELCTLT 39UF 10 10V CAP F XD CERAMIC MLC O 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 5 6P 0 5P F 100V 0 100 X 0 170 760A ONLY CAP FXD MTLZD 0 1UF 5 63VDC 760A ONLY CAP FXD PLSTC 0 33UF 5 50V CAP FXD MICA DI 1200PF 1 100V CAP FXD MICA DI 120PF 1 500V CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD MICA DI 600P F 196 300V 0 41 X 0 48 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD CERAMIC MLC 0 1UF 2096 50V Z5U 0 170 CAP FXD MICA DI 1200PF 1 100V CAP FXD MICA DI 120PF 1 500V
102. 290 04222 5 305 474 1 51 281 0773 00 CAP FXD CERAMIC MLC 0 01UF 10 100V 1743 CGB103KEX A1C52 281 0773 00 CAP FXD CERAMIC MLC 0 01UF 1096 100V 1743 CGB103KEX A1C53 285 1437 00 CAP FXD PLSTC 100PF 5 1600VDC S00VACSAFETY CONT TK1913 FKP1 100 1600 5 A1C54 290 1275 00 CAP FXD ALUM 330UF 2096 400V 35X35MM 105C 55680 LGQ2G331MHSC A1C56 285 1246 00 CAP FXD PPR DI 0 022UF 20 250VAC TK0515 PME 289 MB 5220 A1C57 285 1222 00 CAP FXD PLSTC 0 068UF 20 250V TK0515 PME 271M 568 A1C58 281 0809 00 CAP FXD CERAMIC MLC 200 PF 5 100V 0 100 X 0 170 04222 SA101A201 AA A1C59 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 1 60 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A1C61 281 0768 00 CAP FXD CER DI 470P F 20 100V 04222 5 101 471 760A 760D 760N 8 7 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial no Number Part Number effective A1C65 281 1301 01 A1C66 290 1311 00 A1CR1 152 0061 00 A1CR2 152 0061 00 A1CR3 152 0061 00 A1CR4 152 0409 00 A1CR5 152 0061 00 A1CR6 152 0061 00 A1CR7 152 0400 00 A1CR8 152 0400 00 A1CR9 152 0400 00 A1CR10 152 0400 00 A1CR11 152 0400 00 1 12 152 0400 00 A1CR13 152 1191 00 A1CR14 152 0400 00 A1CR15 152 0400 00 A1CR16 152 0141 02 A1CR17 152 0400 00 A1CR19 152 0141 02 1 20 152 0897 00 A1CR21 152 1165 00 A1CR22 152 116
103. 2W TC TOMI S MALL RES FXD FILM 13K OHM 0 5 0 2W TC 12 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 475 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 22 1 OHM 1 0 2W TC 100 PPM RES FXD CMPSN 22 OHM 5 0 25WALLEN BRADLEY ONLY RES FXD CMPSN 470 OHM 5 0 25W RES FXD CMPSN 10K OHM 5 0 25W RES FXD METAL FILM 178 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 150K OHM 1 0 2W TC 100 PPM RES FXD CMPSN 470 OHM 5 0 25W RES FXD CMPSN 470 OHM 5 0 25W RES VAR TRMR CERMET 100K OHM 20 0 5W 0 197 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES FXD FILM 3 01K OHM 1 0 2W TC TOMI SMALL BODY RES VAR TRMR CERMET 20K OHM 20 0 5W 0 197 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD FILM 4 99K OHM 1 0 2W TC TOTAPED amp RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD FILM 4 99K OHM 1 0 2W TC TOTAPED amp RES FXD METAL FILM 22 1K OHM 196 0 2W TC 2100 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 22 1 OHM 1 0 2W TC 100 PPM RES VAR TRMR CERMET 100K OHM 20 0 5W 0 197 Mfr Code 50139 1637 1637 1637 1637 1637 1637 1637 1637 1637 50139 50139 1637 1637 1637 1637 1637 1637 1637 50139 50139 50139 91637 91637 50139 50139 TK2073 1637 1637 1637 K2073 1637 XO XO XO XO XO wo lt XO XO XO o
104. 2W TC TOMI SMALL BODY 91637 CCF501G75001F A3R656 321 0748 06 RES FXD FILM 4 95K OHM 0 25 0 125W TC 19 19701 5033RE4K950C A3R657 322 3231 00 RES FXD FILM 2 87K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G28700F A3R658 322 3373 00 RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY 91637 501675001 760 ONLY A3R658 322 3254 00 RES FXD FILM 4 32K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF50264321FT 7600 ONLY 658 322 3286 00 RES FXD FILM 9 31K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G93100F 760N ONLY 660 321 1612 07 RES FXD FILM 4 455K OHM 0 1 0 125W TC 19 19701 5033RE4K455B A3R661 321 0603 07 RES FXD FILM 15K OHM 0 1 0 125W TC T9MI 19701 5033RE15K00B A3R672 322 3258 00 RES FXD METAL FILM 4 75K OHM 1 0 2W TC 2100 56845 CCF50 2 G4751FT A3R673 322 3147 00 RES FXD METAL FILM 332 OHM 1 0 2W TC 100 PPM 91637 CCF501G332R0F A3R674 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM 91637 5016 10000F A3R675 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 CCF501G10002F A3R676 321 0340 00 RES FXD FILM 34 0K OHM 1 0 125W TC T0MI TK1727 2322 151 34K0 A3R677 322 3450 00 RES FXD FILM 475K OHM 1 0 2W TC TOMI SMALL 91637 50 2647502 678 322 3481 00 RES FXD FILM 1M 0HM 1 0 2W TC T0MI SMALL BODY 91637 CCF501G10003F 682 321 0340 00 RES FXD FILM 34 0K OHM 1 0 125W TC T0MI TK1727 2322 151 34K0 760A 760D 760 8 25 Replaceable Electrical Parts Replaceable Electric
105. 3 0261 00 CAP FXD CER DI 0 01UF 20 4000V 18796 28750103 1 5 285 1341 01 CAP FXD PLSTC MTLZD FILM 0 1UF 2096 100V P OLYES TER TK1913 MKS 2 0 1UF 20 1 6 281 0771 00 CAP FXD CER 1 2200 20 200 04222 SA102C222MAA A1C7 285 1470 00 CAP FXD PLSTC MTLZD FILM 330PF TK1913 FKP1330 1600 5 1600VDC S00VAC POLY PROPYLENE 11 X18 A1C8 283 0261 00 CAP FXD CER DI 0 01UF 2096 4000V 18796 DHR28Z5U103M4KV A1C9 283 0261 00 CAP FXD CER DI 0 01UF 2096 4000V 18796 DHR28Z5U103M4KV A1C10 281 0563 00 CAP F XD CERAMIC MLC 0 47UF 2096 50V 0 150 X0 290 04222 5 305 474 A1C11 283 0021 00 CAP FXD CER DI 0 001UF 20 5000V 2058 TCK45YS3H102M A A1C12 281 0707 00 CAP FXD CER DI 15000PF 10 200V 04222 A302C153KAA A1C13 281 0707 00 CAP FXD CER DI 15000P F 1096 200V 04222 A302C153KAA A1C14 281 0707 00 CAP FXD CER DI 15000PF 10 200V 04222 MA302C153KAA 1 15 285 1341 01 CAP FXD PLSTC MTLZD FILM 0 1UF 2096 100V P OLYES TER TK1913 MKS 2 0 1UF 20 1 16 290 1311 00 CAP FXD ALUM 10UF 20 50V ESR 1 4 55680 UPL1H100MDH1ITD OHM LOOKHZ 20C 5X11MM 105C 5000HRS 1 17 285 1341 01 CAP FXD PLSTC MTLZD FILM 0 1UF 20 100V POLYESTER TK1913 MKS 2 0 1UF 20 1 18 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A1C19 290 1310 00 CAP FXD ALUM 10UF 20 160V ESR 24 9 OHM 5 CEJSM2C100M 120HZ 20C LS 20 200 INCH 13X20MM 105C 5000HRS A1C20 281 0707 00 CAP FXD CER DI 15000PF 10 200V 04222 MA302C153KAA A1C21 281 0707
106. 320 C1 J135 0332 C3 U347 C4 R423 G4 R424 G4 R425 G3 760A 7600 760N U320 74145 A4 15 37 14 29 coo 25 21 17 13 0332 74145 4 15 110 27 31 15 34 23 19 LEFT 14 2 13 12 coo gt ANANAS C355 1UF U347 74145 4 15 RIGHT 14 coo 760A 760D 760N STEREO AUDIO MONITOR AU10 AUS AU3 AU2 AUT 5 AUX N o F mo m O R438 120 R437 120 CAL AUTO DISPLAY GAIN A 20K 12V R451 R439 6 98K 1 2 _ MANUAL 9 4 75K DS434 e PEAK HOLD o o 5634 cerry TERE SCALE 525 13 14 te 20 L R SELECT 5616 AUX FRONT PANEL
107. 4 Environmental Limits 1 6 Physical Characteristics 1 6 Certifications and Compliances 1 6 Front Panel Controls 2 1 Factory Set Input Sensitivity 3 1 Power Supply Fault Symptoms 4 8 Low Volts Supply Voltages 4 8 Control Circuit Test Points 4 10 High Volts Supply Fault Symptoms 4 11 High Voltage Oscillator Test Points 4 12 Verifying Input Sensitivity 760A only 5 5 LED Bar Gain Adjustment 5 15 LED Bar Reference Adjustment 5 15 Power Cord Options 7 1 Contents vi 760A 760D 760N Kar General Safety Summary To Avoid Fire or Personal Injury Symbols and Terms 760A 760D 760N AN A Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it To avoid potential hazards use this product only as specified Only qualified personnel should perform service procedures Use Proper Power Cord Use only the power cord specified for this product and certified for the country of use Ground the Product This product is grounded through the grounding conductor of the power cord To avoid electric
108. 4 G4 C63 6 Ei Gi CR22 6 B2 14 R13 6 F3 H4 R42 7 Cl R66 7 Bi U3B 6 J3 C14 7 D2 C4 C40 6 FA H4 C65 7 B2 E4 CR23 6 B2 14 L1 6 F3 F2 R43 7 2 R67 6 F2 F4 R90 6 13 U4A 6 04 15 15 7 F2 C4 C41 6 E4 M C66 7 A2 E2 CR24 6 B2 14 12 6 F2 G1 R14 6 F3 H4 R68 6 F4 G5 R91 6 02 U4B 6 C4 CR1 7 E2 1 CR25 6 B3 J2 L3 6 F2 G2 R20 7 C4 M R44 7 D2 B3 R92 6 02 Ki U5 6 J2 16 7 C2 C42 6 D3 H CR26 6 F4 G4 L4 6 C2 R21 7 C5 4 R45 7 F2 C4 R69 6 G4 G5 R93 6 02 12 C17 7 F2 D4 6 C4 J4 CR2 7 04 B3 R22 7 05 4 R46 7 Cl R70 6 G4 G4 R94 6 02 12 VR1 6 FA H4 C18 7 Ei C44 6 02 18 7 E2 BI CR27 6 D3 Q1 7 E5 R23 7 B4 R47 7 D2 R71 6 FA H4 VR2 7 A2 E2 C19 7 ci C45 6 D4 M CR4 7 c2 B2 CR29 6 E4 H5 Q2 7 E5 R48 7 C2 C4 R72 6 05 H4 R95 6 B4 J3 VR3 6 H4 C20 7 C2 C46 6 C5 5 7 02 CR30 7 A2 7 04 B4 R24 7 05 4 R73 6 E5 H4 R96 6 A4 6 FA H4 CR6 7 E2 CR31 7 A2 Q4 7 04 B4 R25 7 B4 4 R49 7 F2 C4 R97 6 J3 21 7 ci C47 6 J3 Q5 7 C4 B4 R26 7 E5 R50 7 F2 El R74 6 C4 J5 R98 6 F4 95 wi 6 G3 E4 c22 7 B2 E2 C48 6 J4 CR7 7 c2 D4 DS1 7 E2 B2 R27 7 E5 4 R51 7 El R75 6 B5 J4 R99 6 G4 H5 w2 6 G3 E4 7 B2 C49 6 03 J2 CR8 7 c2 D4 052 7 2 B2 Q6 7 B2 1 R28 7 E5 4 R52 7 F2 El R76 6 c5 6 G2 E4 24 7 Di E4 C50 6 J CR9 7 C1 E4 DS3 7 BI Q7 6 D5 M R53 7 F2 El R77 6 D4 R101 6 K2 wa 6 G2 65 C25 7 E2 51
109. 5 00 A1CR23 152 1165 00 A1CR24 152 1165 00 A1CR25 152 0141 02 A1CR26 152 0141 02 A1CR27 152 0400 00 A1CR29 152 0400 00 A1CR30 152 0141 02 A1CR31 152 0400 00 1051 150 0050 00 1052 150 0050 00 1053 150 0050 00 1054 150 0050 00 1 1 159 0021 00 200 2264 00 204 0906 00 8 8 Serial Discont d Name amp Description CAP F XD CERAMIC MCL 0 47UF 1096 50V CAP FXD ALUM 10UF 2096 50V ESR 21 4 OHM 100KHZ 20C 5X11MM 105C 5000HR S DIODE S1G 200V 0 1A 700NS 4 0P F DIODE S1G 200V 0 1A 700NS 4 0P F DIODE S1G 200V 0 1A 700NS 4 0P F DIODE RECT FAST RCVRY 12KV 10MA 250NS DIODE S1G 200V 0 1A 700NS 4 0P F DIODE S1G 200V 0 1A 700NS 4 0P F DIODE RECT FAST RCVRY 400V 1A 200NS DIODE RECT FAST RCVRY 400V 1A 200NS DIODE RECT FAST RCVRY 400V 1A 200NS DIODE RECT FAST RCVRY 400V 1A 200NS DIODE RECT FAST RCVRY 400V 1A 200NS 5 5 5 DIODE RECT FAST RCVRY 400V 1A 200N DIODE RECT SCHTKY 100V 10A 150A IFSM 800MVF AT 10A DIODE RECT FAST RCVRY 400V 1A 200N DIODE RECT FAST RCVRY 400V 1A 200N DIODE SIG ULTRA FAST 40V 150MA 4NS 2 DIODE RECT FAST RCVRY 400V 1A 200NS DIODE SIG ULTRA FAST 40V 150MA 4NS 2P F DIODE RECT FAST RCVRY 1000V 1 5A 300NS SOFT RCVRY DIODE RECT ULTRA FAST 600V 4A 50NS DIODE RECT ULTRA FAST 600V 4A 50NS DIODE RECT ULTRA FAST 600V 4A 50NS DIODE RECT ULTRA FAST 600V 4A 50NS DIODE SIG ULTRA FAST 40V 150MA 4NS 2P F DIODE SIG ULTRA FAST 40V 150MA 4NS 2 DIODE RECT FAST RCVRY 400V 1A 200NS DIODE RECT FAST
110. 5 SCHURTER INC 62643 UNITED CHEMICON INC 64155 LINEAR TECHNOLOGY CORP 64537 KDI TRIANGLE ELECTRONICS 71400 BUSSMANN DIV OF COOPER INDUSTRIES INC 71590 CGE SWITCHES USA 73743 FISCHER SPECIAL MFG 15042 IRC ELECTRONIC COMPONENTS PHILADELPHIA DIV TRW FIXED RESISTORS 75498 MULTICOMP INC 76493 BELL INDUSTRIES INC JW MILLER DIV 80009 TEKTRONIX INC 82389 SWITCHCRAFT INC SUB OF RAYTHEON CO 83701 ELECTRONIC DEVICES INC 84411 AMERICAN SHIZUKI CORP OGALLALA OPERATIONS 86928 SEASTROM MFG CO INC 8X345 NORTHWEST SPRING MFG CO 91637 DALE ELECTRONICS INC 9M 860 ESAM INC 2073 TOKYO COSMOS AMERICA INC 760A 7600 760N Address INDIANAPOLIS ROAD HWY 240 240 2300 RIVERSIDE BLVD PO BOX 74 15375 BARRANCA PARKWAY SUITE B207 7890 12TH AVE SOUTH 1016 CLEGG COURT 9801 W HIGGINS ST SUITE 430 1630 MCCARTHY BLVD 605 JEFFERSON ROAD 114 OLD STATE RD PO BOX 14460 PO BOX 1587 111 INDUSTRIAL RD 401 BROAD ST 3005 SW 154TH TERRACE 38 306 E ALONDRA BLVD PO BOX 2859 14150 SW KARL BRAUN DR PO BOX 500 5555 ELSTRON AVE 21 GREY OAKS AVE 301 WEST O ST 456 SEASTROM STREET 5858 WILLOW LANE 2064 12TH AVE PO BOX 609 PO BOX 376 1177 E TOWER ROAD City State Zip Code GREEN CASTLE IN 46135 NORFOLK NE 68701 2242 IRVINE CA 92718 MINNEAPOLIS MN 55425 PETALUMA CA 94952 1152 ROSEMONT IL 60018 4771 MILPITAS CA 95035 7417 WHIPPANY NJ 07981 ST LOUIS MO 63178 FO
111. 50G10001F 1637 CCF50G10001F 1727 MPR24 2322 141 1637 CCF501C10001B 1727 MPR24 2322 141 1637 501 10001 1637 501675001 19701 5033RE4K950C 91637 501628700 91637 501675001 HO HO HO lt O HO WO WO WO WHO 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R383 A3R383 A3R387 A3R388 A3R400 A3R423 A3R441 A3R443 A3R446 A3R447 A3R451 A3R455 A3R456 A3R458 A3R460 A3R463 A3R466 A3R467 A3R469 A3R470 A3R471 A3R472 A3R473 A3R474 A3R475 A3R476 A3R477 A3R478 A3R480 A3R481 A3R482 A3R487 A3R488 A3R495 A3R496 A3R520 A3R520 A3R541 A3R543 Serial No Discont d Serial no effective Tektronix Part Number 322 3254 00 322 3286 00 321 1612 07 321 0603 07 311 2269 00 307 0446 00 322 3289 00 322 3289 00 322 3258 00 321 1720 00 322 3222 00 322 3258 00 322 3172 00 322 3289 00 322 3289 00 311 2236 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 00 322 3289 07 322 3289 07 322 3289 07 322 3289 07 322 3289 00 322 3289 07 322 3318 00 322 3313 00 321 1612 07 321 0603 07 323 0114 00 323 0172 00 311 2212 01 366 1701 01 321 0418 00 322 3289 00 760A 7600 760 amp Description RES FXD FILM 4 32K OHM 1 0 2W TC TOMI SMALL BODY 760D ONLY RES FXD FIL 760N ONLY RES FXD FIL
112. 57 5 C132 G3 C344 G4 C545 H5 754 05 CR186 C2 CR659 Ci R183 D3 R287 B3 R520 B5 R752 C1 TP351 E2 03798 E4 145 H3 C263 H2 C361 H4 C457 F2 C554 H2 C690 G5 C758 CR187 C2 CR757 C2 J398 B3 R187 B2 R288 B3 R475 E4 R556 F2 R753 D2 TP357 G2 C148 G2 C267 G4 C368 H4 C462 G5 C556 F2 C708 H4 C764 B2 CR254 F5 CR758 C2 J657 D1 R188 B2 R476 04 R652 E1 U379C C4 C268 H2 C468 G2 C711 H4 CR255 F5 J658 D1 R195 B2 R357 F5 R477 C4 R653 D2 R755 c2 TP548 E4 03790 C4 C172 G2 C279 G4 C379 H2 C469 G5 C557 F2 C715 G4 C794 G3 CR286 J153 B5 J663 B1 R376 D4 R478 D4 R756 D1 TP554 El 0456 F2 C179 G2 C287 387 C4 C479 G5 C562 H2 C728 G4 C823 G4 J185 D3 9664 B1 R196 B2 R380 D4 R480 C4 R655 D1 R757 C1 TP568 C5 U654A C187 C2 C390 B4 C571 G2 C825 G4 CR287 C3 J186 D2 J668 B1 R274 E2 R381 04 R656 D1 R762 B2 TP621 D5 U654B Ei C190 B2 C290 B3 C406 G3 C487 C5 C580 G2 C781 G4 C853 G5 CR356 F2 J191 B3 R275 D2 R382 04 R481 D4 R657 D1 R763 B2 TP745 05 C211 H3 C324 G3 C411 G3 C490 B4 C589 G2 C735 H4 C873 G3 CR386 C3 J192 B3 R155 F4 R276 c2 R482 C4 R658 D1 R764 B1 TP778 05 U654C C2 C328 G3 C523 H3 C738 H4 CR387 C4 R156 F4 R277 D3 R383 D4 R487 B5 R660 B1 R766 B1 U654D C1 C254 F5 C332 H3 C415 H3 C527 G4 C612 H4 C744 H2 C874 H5 CR456 F2 J198 B2 R177 D3 R387 B4 R488 B4 01798 2 255 5 C333 H3 C436 H3 C530 G4 C646 H5 745 2 C880 G3 J385 D4 R180 D3 R280 R388 B4 R495 B4 R661 B1 TP151 5 01796 C258 F5 C445 G2 C660 C1 C881 H5 CR486 CA 4386 04 R181 D3
113. 6 5V 11 5V 5V 9 724 1 0K AGATE PK ON gt LDELAN R617 T R820 R320 7415132 08258 109 2 100 7415132 14 12 4 R321 B 10 0 3 PHLED gt lt gt Au2 R605 vec bre 1 00K 3 UDN2585 39UF GND 9507 Io 00 R122 2 17 1 U823A Gt 24 58 100 7478 Em HS AUXi 04 H4 AUX2 5 R319 71 12 10 0 7 07 R641 10 0K vec 90 sv GND sUB 12V 9 fos CR643 U313 U213 2N 5V 5V 741542 UDN2585 1 1 1 18 R10 00 lo 12V 2 2 17 CR642 645 U453B 9 o P a 1 A6 Re MC34084 R733 R734 02 2 02 1 MC3408 MC34084 8 CR638 U638 4 4 15 R7 1 MC34084 m cmz R648 TP552 100 10 0K R735 dede 03 bi 4 is 15 8546 8 8 45K 5 1 100 ROMP 2 4 pz m 04 13 R5 500 9 7 2 e 3 101 05 775 05 15 Cne 12V R743 Siz 02 06 b 716 os 12 10 0K ceso 6647 R732 tenis 4 7080 07 7 07 10758 T 324M 100 m 04 bii 5 15 05 09 vec HI A s 7 T 10 CHANNEL CR743 1 5116 08 SNDESUB nd 4 Maren 7 L C649 2 00K PCM 108 5 CR746 AUF 2 Y be 06458 42 ed U708C MC34084 U645D 12 2 oed er AUIS 10 MC34084 646 12 1 00 RIGHT SIGNAL 4 75 lt 14 20K 5 ves PROCESSOR 18 2K OFFSE
114. 7 19701 TK2073 TK2073 91637 TK2073 1637 1637 K1727 1637 1637 1637 1637 o Mfr Part Number GFO6UT2 501 ML GFOGUT2 102 120 CCF50 2 G4751FT CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F 501 100018 501 100018 MPR24 2322 141 501 100018 501 75001 5033RE4K950C CCF501G28700F CCF501G75001F CCF502G4321FT CCF501G93100F 5033RE4K455B 5033RE15K00B CMF65116G150R0F CMF65116G604ROF SFR252322 181 5043CX7M500J GFOGUT2 104 M L GFOGUT2 104 M L CCF502G4322FT GFOGUT2 501 M L CCF501G56200F CCF50G 10001F SFR25 2322 181 501 100018 501 100018 501 100018 CCF50G10001F 8 21 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3R280 A3R281 A3R282 A3R287 A3R288 A3R306 A3R311 A3R315 A3R319 A3R320 A3R321 A3R336 A3R337 A3R344 A3R347 A3R351 A3R352 A3R353 A3R354 A3R355 A3R356 A3R357 A3R358 A3R359 A3R362 A3R363 A3R364 A3R366 A3R370 A3R371 A3R373 A3R374 A3R375 A3R376 A3R380 A3R381 A3R382 A3R383 8 22 Tektronix Serialno Serial Part Number effective Discont d 322 3289 07 322 3318 00 322 3373 00 321 1612 07 321 0603 07 322 3001 00 322 3001 00 322 3001 00 322 3001 00 322 3001 00 322 3001 00 322 3289 00 322 3289 00 322 3289 00 311 2230 00 311 2236 00 311 2236 00 322 3481 00 322 3481
115. 760A 760D 760N This section describes instrument options available for the 760 Series The standard instrument is shipped with a P31 green phosphor CRT installed If Option 74 is ordered the instrument is shipped with a P4 white phosphor CRT installed The CRT part numbers are given at the end of the Replaceable Electrical Parts List Any of the power cord options shown in Table 7 1 can be ordered for the 760 Series If no power cord option is ordered instruments are shipped with a North American 125 V locking power cord and one replacement fuse Table 7 1 Power Cord Options Option Description of power Al Universal Europe 220 V 16 A Locking A2 United Kingdom 240 V 15 A A3 Australian 240 V 10 A All power cord options include a captive power plug and one replacement fuse Unless otherwise specified power cords for use in North America are UL listed and CSA certified Option cords are approved by at least one test house acceptable in the country to which the product is shipped Power cord types are illustrated on the exploded view in SECTION 10 REPLACEABLE MECHANICAL PARTS Options 7 2 760 760D 760 m F lt Replaceable Electrical Parts Section 8 Replaceable Electrical Parts This section contains list of the electrical components for the 760 7600 and 760N Use this list to identify and order replacement parts Parts Ordering Information Replacement parts are
116. 82K OHM 1 0 2W TC 100 91637 RES VAR TRMR CERMET 5K OHM 20 0 5W 0 197 SQ TOP TK2073 ADJUST RES FXD FILM 2 43K OHM 1 0 2W TC TOMI SMALL BODY 91637 RES FXD METAL FILM 1 82K OHM 196 0 2W TC 2100 91637 RES VAR TRMR CERMET 1K OHM 20 0 5W 0 197 5 0 2073 ADJUST RES FXD FILM 5 36K 1 0 125 19701 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD FILM 60K OHM 196 0 125W TC T0 91637 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM 91637 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM 91637 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM 91637 RES FXD FILM 221K OHM 1 0 125W TC TOMI 19701 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PP 91637 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PP 91637 RES FXD FILM 3 24M 1 0 125 0 64537 RES FXD METAL FILM 10K 0HM 1 0 2W TC 100 PP 91637 RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PP 91637 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM 91637 RES FXD METAL FILM 18 2K OHM 196 0 2W TC 2100 91637 760A ONLY RES FXD METAL FILM 4 75K OHM 196 0 2W TC 2100 56845 Mfr Part Number CCF50 2G681R0F CCF501G 100R OF CCF50 2 G5901FT CCF501G 1008 OF CCF50 2F39200F GF06UT2 203 ML CCF501G 61900F CCF50G 10001F CCF50G 10001F CCF501G 1
117. A3CR487 A3CR536 A3CR542 A3CR543 A3CR545 A3CR546 A3CR558 A3CR559 A3CR563 A3CR564 A3CR565 A3CR566 A3CR616 A3CR638 A3CR642 A3CR643 A3CR658 A3CR659 A3CR742 A3CR743 A3CR746 747 757 758 780 790 791 846 A3CR850 A3CR851 A3CR852 8 18 Tektronix Part Number 152 0066 00 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0066 00 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0400 00 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 152 0141 02 Name amp Description DIODE RECT 400V 1A IFSM 30A 1 2VF 2US DIODE SIG U LTRA FAST 40V 150 DIODE SIG ULTRA FAST 40V 150 DIODE SIG ULTRA FAST 40V 150MA ANS 2 DIODE SIG U DIODE DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE RECT DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG U DIODE SIG
118. AP 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 55 W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 55 W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 55 W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR Mfr Code Mfr Part Number 1637 CCF501G84500F 1637 501610003 1637 RS2B B63000F 1637 CCF501G100RO0F 1637 CCF501G100RO0F 1637 CCF50 2G698ROF 1637 CCF50 2G698ROF 1637 501615000 1637 RS2B B63000F 1637 50 2 23201 1637 CCF501G25500F 1637 CCF501G11801F 1637 501610000 1637 CCF50G10001F 1637 501661900 1637 CCF501G100RO0F 1637 CCF501G100RO0F 1637 501661900 1637 50 2 23201 XO XO XO XO XO XO XO XO wo lt o XO wo o 1637 CCF501G11801F 1637 CCF501G25500F 57856 KDS 10 312 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 26364 104 01 02 760A 7600 760N Replaceable
119. C U4 pin 13 80 kHz repetition rate 300 ns width approximately 3 Vpop Q8 collector 80 kHz repetition rate 400 ns width switching from 5 V to approximately 2 V 5 Error Amplifier Check a Connect the negative output from the variable DC power supply to Connect the positive output to W1 5 V b Connect the negative output of another variable DC power supply to Connect the positive output to 4 15 V Set variable power supply to 20 VDC c Connect the digital multimeter between and the cathode of CR15 d Setthe variable DC power supply connected to W1 5 V to 4 8 V The cathode of CR15 should be approximately 20 V e Setthe variable DC power supply connected to W1 5 V to 5 2 V The cathode of CR15 should be approximately 2 V f Ifthis check did not reveal the cause for the 5 V supply not regulating refer to the Output Check and the Control Circuit Check High Volts Supply Table 4 4 lists the High Volts Supply fault symptoms and procedures 4 10 760A 760D 760N Maintenance Load the Low Volts Supply with the instrument or with the 20 2 resistor as stated at the beginning of the Troubleshooting Procedure Table 4 4 High Volts Supply Fault Symptoms Symptom Unable to focus CRT using the front panel control Procedure Focus Amplifier Check Unable to adjust CRT intensity using the Z Axis Amplifier Check front panel control Grid Drive Check No CRT dis
120. C490 Diag Diag No Loc Comp No C502 C510 C523 C527 C530 C535 C536 C538 C543 C545 C546 C547 C548 C554 C556 C557 C562 C570 C571 C573 C574 C575 C578 C580 C581 C584 C586 C587 C588 C589 C612 C616 C618 C646 C649 C650 C660 C663 C670 C690 C695 708 C711 712 715 718 724 725 728 C731 735 738 744 745 746 748 753 754 Diag Diag No E Sal ass N N Saga nn NS anna anna oe ee N N N n 2 o k Loc gt NNN Comp No C755 C758 C764 C768 C772 C776 C778 C785 C794 C815 C818 C819 C823 C825 C841 C853 C854 C855 C858 C870 C872 C873 C874 C876 C880 C881 C890 C891 C894 C895 C897 CR186 CR187 CR254 CR255 CR286 CR287 CR356 CR386 CR387 CR442 CR443 CR456 CR458 CR459 CR486 CR487 CR536 CR542 CR543 CR545 CR546 CR558 559 CR563 CR564 Diag Diag No as an e 02 an CUT GD tee N N N A RAPD a anno Loc 1 2 B2 D4 4 F4 B1 G3 c3 C2 B3 G4 G4 D1 G5 B1 C1 C1 E4 E4 G3 H5 F5 G3 H5 E1 E2 H5 F2 F1 C2 C2 F5 F5 c3 C3 F2 C3 C4 B1 B1 F2 D2 D2 C4 C5 E1 B1 B1 B1 B1 D2 D2 D3 D3 Comp No CR565
121. CAL MAN GAIN range is between detents Switches instrument power ON and OFF For optimum display definition Varies external graticule illumination Center the display on the graticule Varies intensity of trace Rotates trace into alignment with graticule lines 2 1 Operating Instructions GRATICULE 5 FOCUS VERT 2 Figure 2 1 760 Front Panel Tektronix 760 LEFT RIGHT SELECT INTENSITY POSITION 4 HORIZ Rear Panel Connectors 2 2 The three rear panel AUDIO INPUTs LEFT RIGHT and AUXILIARY are balanced bridging male XLR connectors The connectors are wired as follows Pin 1 Ground Pin 2 Pin 3 The LEFT and RIGHT AUDIO INPUTS are for the left and right channels of your stereo signal The AUXILIARY input can be used for an externally derived monaural signal or a SAP signal The rear panel is shown in Figure 2 2 760A 760D 760N Operating Instructions 760 SERIES TO AVOID ELECTRICAL SHOCK THE POWER 333 3321 02 AO Oo DIE IN DIESEM GERAT ENTSTEHENDE RONTGENSTRAHLUNG IST AUSREICHEND ABGESCHIRMT BESCHLEUNIGUNGSSPANNUNG KLEINER A ACCELERATION VOLTAGE LESS THAN EMISSION WITHIN THIS INSTRUMENT HAS BEEN SUFFICIENTLY SHIELDED CORD PROTECTIVE GROUNDING CONDUCTOR MUST BE CONNECTED TO EARTH GROUND 90 REPLACE FUSE ONLY WITH 250V 2A F TYPE Figure 2 2 760A Rear Panel CRT D
122. CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 CAP FXD MICA DI 600P F 1 300V 0 41 X 0 48 CAP FXD MICA DI 1200PF 1 100V DIODE SIG ULTRA FAST 40V 150MA 4NS 2P F DIODE SIG ULTRA FAST 40V 150MA 4NS 2P F DIODE RECT 400V 1A IF SM 30A 1 2VF 2US DIODE RECT 400V 1A IF SM 30A 1 2VF 2US DIODE SIG ULTRA FAST 40V 150MA 4NS 2 DIODE SIG ULTRA FAST 40V 150MA 4NS 2 Mfr Code 04222 04222 62643 04222 62643 2N936 2N936 0 1 5 0891 2N936 04222 0891 04222 TK1743 04222 04222 12954 04222 04222 TK1913 84411 0891 0891 04222 04222 0891 04222 04222 0891 0891 04222 0891 0891 21014 21014 OLUA3 OLUA3 27014 27014 Mfr Part Number SA105E104MAA SA105E104MAA 511D296 5 102 101 5110296 1500225 9020 2 199D226X0015DA1 5 1 221 4 RDM19FD122F03 199D226X0015DA1 SA105E104MAA RDM15FD121F03 SA105E104MAA CGB103KEX SA105E104MAA SA105E104MAA D39B10K1 SA105E104MAA SA102A5R6DAA 52 1 63 5 TEK34 33 5 50 RDM19FD122F03 15 0121 03 SA105E104MAA 5 105 104 RDM15FC601F 03 SA105E104MAA SA105E104MAA RDM19FD122F03 RDM15FD121F 03 SA105E104MAA RDM15FC601F 03 RDM19FD122F 03 FDH9427 FDH9427 1N5060 1N5060 FDH9427 FDH9427 8 17 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3CR356 A3CR386 A3CR387 A3CR442 A3CR443 A3CR456 A3CR458 A3CR459 A3CR486
123. CTLT 10UF 20 25V TANTALUM 05243 10UF 25V 760 ONLY A3C254 290 1311 00 CAP FXD ALUM 10UF 20 50V ESR 1 4 OHM 55680 UPL1H100MDH1TD 100KHZ 20C 5X11MM 105C 5000HRS 760D AND 760N ONLY A3C 255 290 0267 00 CAP FXD TANT DRY 1UF 20 35V TANT OXD 0 151 X 0 317 2N936 173D105X0035V A3C258 290 0536 04 CAP FXD ELCTLT 10UF 20 25V 2N936 1990106 0025 1 760 ONLY 258 290 0536 00 CAP FXD ELCTLT 10UF 20 25V TANTALUM 05243 ETP 3F 10UF 25V 1600 AND 760N ONLY A3C261 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA 262 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C263 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA 267 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C268 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C279 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C287 281 0765 00 CAP FXD CER DI 100P F 5 100V 04222 5 102 101 290 290 0990 01 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL 62643 5110296 324 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA 328 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 332 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA
124. ERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 735 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 738 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C744 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C745 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SAl05E104MAA A3C746 281 0810 00 CAP FXD CERAMIC MLC 5 6P F 0 5P F 100V 0 100 X 0 170 04222 SA102A5R6DAA 760A ONLY A3C748 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 8 16 760 760D 760 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3C753 A3C754 755 758 764 768 772 776 778 785 794 815 818 819 823 825 841 853 854 A3C855 A3C858 A3C870 A3C872 A3C873 A3C874 A3C876 880 881 A3C890 A3C891 A3C894 A3C895 A3C897 186 187 254 A3CR255 A3CR286 A3CR287 Tektronix Part Number 281 0775 00 281 0775 00 290 0990 01 281 0765 00 290 0990 01 290 0488 00 290 0512 00 290 0944 01 283 0623 00 290 0512 00 281 0775 00 283 0728 00 281 0775 00 281 0773 00 281 0775 00 281 0775 00 290 0297 00 281 0775 00 281 0810 00 285 1349 00 285 0905 00 283 0623 00 283 07
125. ERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR TERM TEST POINT 0 070 ID 0 220 H 0 063 0 015 X 0 032 BRASS W RED NYLON COLLAR IC MEMORY CMOS EPROM 8K X 8 W 3 STATE OUT 760A ONLY MICROCKT DGTL 8192 X 8EPROM PRGM 760D ONLY MICROCKT DGTL 8192 X 8EPROM PRGM 760N ONLY MOUNTING PARTS SKT DIP PCB FEMSTR 2 X 14 28 POS 0 1 X 0 6 CTR 0 175 H X0 130 TAIL BECU TIN ACCOM 0 008 0 0015 X 0 014 0 022 END MOUNTING PARTS IC DIGITAL LSTTL FLIP FLOP OCTAL D TY PE ENABLE IC MEMORY CMOS EPROM 8K X 8 W 3 STATE OUT 760A ONLY MICROCKT DGTL 8192 X 8 EPROM PRGM 760D ONLY MICROCKT DGTL 8192 X 8 EPROM PRGM 760N ONLY MOUNTING PARTS SKT DIP PCB FEM STR 2 X 14 28 POS 0 1 X 0 6 CTR 0 175 H X0 130 0 008 0 0015 X 0 014 0 022 END MOUNTING PARTS IC DIGITAL LSTTL FLIP FLOP OCTAL D TY PE ENABLE IC CONVERTER BIPOLAR D A 12 BIT VOLTAGE OUT REF IC DIGITAL LSTTL DEMUX DECODER 3 TO 8DECODER IC DIGITAL LSTTL GATES 5 05 106 SWITCH QUAD SPST IC MISC CMOS ANALOG SWITCH QUAD SPST IC LINEAR BIFET OP AMP QUAD IC LINEAR TTL DRVR 8 CHAN SCE DRVR LOW VOUT SAT Mfr Code 26364 26364 26364 26364 26364 26364 26364 26364 26364 80009 80009 80009 00779 01295 80009 80009 80009 00779 01295 13919 01295 01295 1 566 1 566 04713 0CVK3 Mfr Pa
126. FIL 10K OH MET FILM 20K OHM 196 0 2W TC 2100 PPM 0 196 0 2W TC T9 T amp R SM BODY RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 4 455K OHM 0 196 0 125W TC lt 9 RES FXD FIL RES FXD FIL 15K OH 150 OHM 1 0 5W TC T0 0 1 0 125W TC T9MI RES FXD FILM 604 OHM 1 0 5W TC 10 RES VAR NONWW CKT BD 20K OHM 10 0 25WLINEAR KNOB GY 0 127 ID 0 392 OD X 0 4 H RES FXD FILM 221K OHM 1 0 125W TC T0MI RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PPM Mfr Code 91637 91637 19701 19701 TK2073 11236 91637 91637 56845 64537 91637 56845 91637 91637 91637 TK2073 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 1637 XO O XO XO lt 1637 19701 19701 91637 91637 12697 80009 19701 91637 Mfr Part Number 50264321 501 93100F 5033RE4K455B 5033RE15K00B GFO6VT2 203 ML 750 101 R10K CCF50G 10001F CCF50G 10001F CCF50 2 G4751FT PME55 3 24 MEGO CCF501G 20000F CCF50 2 G4751FT CCF501G 604R OF CCF50G 10001F CCF50G 10001F GFO6UT2 203 ML CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF50G 10001F CCF501C 10001 CCF501C 10001 CCF501C 10001 CCF501C 10001 CCF50G 10001F CCF501C10001B CCF501G 20001F CCF501G 75001F 5033RE4K455B 5033RE15K00B 65116G 1508 OF CMF 65116G 604R OF 45228 366170101 5043
127. HM 5 0 25W RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PP RES FXD FILM 5K OHM 0 1 0 125W TC T9MI RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 5K OHM 0 1 0 125W TC T9MI RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 4 95K OHM 0 2596 0 125W TC lt 9 RES FXD FILM 2 87K OHM 196 0 2W TC TOMI S MALL BODY RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY 760A ONLY m rn rn rn rn m Mfr Code Mfr Part Number 91637 501 10001 91637 501620001 91637 CCF501G75001F 19701 5033RE4K455B 19701 5033RE15K00B 91637 CCF501G10R00F 91637 CCF501G10R00F 91637 CCF501G10R00F 91637 CCF501G10R00F 91637 CCF501G10R00F 9 9 9 9 1637 CCF501G10RO00F 1637 CCF50G10001F 1637 CCF50G10001F 1637 CCF50G10001F TK2073 GFO6UT2 501 ML 2073 GFO6UT2 203 ML 2073 GFO6UT2 203 ML 1637 CCF501G 10003F 1637 CCF501G 10003F 1637 CCF501G20000F 1637 CCF50264322FT 1637 CCF501G604ROF 1637 50610001 1727 SFR252322 181 1637 CCF50G10001F 1637 CCF50G10001F 1637 CCF50G10001F 1637 CCF501G10002F 1637 CCF
128. INFINITE Los I 18 DS JUMPER INPUT PINS SENSITIVITY AUX 25 2 INPUT AMPLIFIER 16dBu 12dBu 8dBu 4dBu OdBu R381 4 95K 8 8487 I 487 CR487 4 455K 1 100 12V R520 R700 INTENSITY 1M 12V FOCUS 12 BLANKING E2 28 lt LYYYYYY 2 INTENSITY VCC 5V 760A 760D 760N STEREO AUDIO MONITOR U379C MC34084 TP151 3 568 TP745 TP778 TP621 Tob TP323 tL GND 7 RIGHT gt 4 2 03798 MC34084 FIELD INSTALLED RESISTORS R183 R383 R658 USER DEFINED 4 32 9 31K VOLTAGE REGULATORS AND DECOUPLING PART OF A3 MAIN BOARD INPUT AMPLIFIERS AND DECOUPLING schematic diagram has an alphanumeric grid to assist locating parts within that diagram 760A 7600 760N Schematic Diagram lt 2 gt Component Locator Chart Assembly A3 Comp Diag Comp Diag Comp Diag Comp Diag No Loc No Loc No Loc No Loc C206 H1 0507 R632 D4 U436A 02 C349 A1 R637 D1 U436B D4 C448 C1 R122 H3 U438 F1 C536 D4 R123 H2 R641 B3 C543 D1 R124 H1 R643 A4 0445 Al R255 C1 R646 B4 04458 1 C546 B1 R306 H1 R647 C4 04456
129. Instruction Manual Tektronix 760A 760D 760N Stereo Audio Monitors 760A S N B050000 amp Above 760D 760N S N B030000 amp Above 070 5992 05 Warning The servicing instructions are for use by qualified personnel only To avoid personal injury do not perform any servicing unless you are qualified to do so Refer to all safety summaries prior to performing service Please check for change information at the rear of this manual C Copyright Tektronix Inc rights reserved Tektronix products are covered by U S and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Printed in the U S A Tektronix Inc P O Box 1000 Wilsonville OR 97070 1000 TEKTRONIX and TEK are registered trademarks of Tektronix Inc WARRANTY Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one 1 year from the date of shipment If any such product proves defective during this warranty period Tektronix at its option either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product In order to obtain service under this warranty Customer must notify Tektronix of the defect before the expiration of the warranty period and make suitable arrangements for the performance of
130. KVAC IN 15KVDC OUT POTTED MODULE IC LINEAR BIP OLAR OP AMP IC LINEAR BIP OLAR COMP TR DUAL OP EN COLL 300NS IC DIGITAL LSTTL MULTIVIBRATOR IC LINEAR BIPOLAR SW REGULATOR CONTROLLER PWM CURRENT MODE SINGLE TOTEM POLE OUTPUT IC LINEAR BIP OLAR VR ADJ USTABLE S HUNT 100MA 2 296 DIODE ZENER 5 1V 596 0 4W DIODE ZENER 5 1V 596 0 4W DIODE ZENER 10V 5 0 4W DIODE ZENER 110V 5 0 4W 1N986B DIODE ZENER 110V 5 0 4W 1N986B BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L BUS CONDUCTOR DUMMY RES 0 094 OD X 0 225L CIRCUIT BD ASSY FRONT PANEL CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 DIODE OPTO LED RED 626NM 101 ELEMENTLINEAR CONN BOX PCB FEMALE STR 1 X 37 0 1CTR 0 350 0 125 TAIL 30 GOLD DIODE OPTO LED RED 626NM 101 ELEMENTLINEAR CONN BOX PCB FEMALE STR 1 X 37 0 1CTR 0 350 0 125 TAIL 30 GOLD DIODE OPTO LED RED 626NM 101 ELEMENTLINEAR CONN BOX PCB FEMALE STR 1 X 37 0 1CTR 0 350 H X 0 125 TAIL 30 GOLD LED ASSEMBLY DIRECTIONAL 3 IN 5 GREEN PART OF A2DS412 PART OF A2DS412 Mfr Code TK2073 91637 91637 91637 75498 0 803 75498 26364 26364 51406 01295 01295 04713 48726 01295 14552 14552 04713 24546 24546 24546 24546 80009 04222 50434 00779 50434 00779 50434 00779 TK1155 Mfr Part Number 2 104 CCF501G 498 90F CW52 8R
131. LACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY TEKTRONIX AND ITS VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES IR RESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES B Table of Contents List of Figures sans ree te e lei eh iv Eist OF ba dies aie ew ges 9d General Safety vii Service Safety Summary 4 ix a G ior EDU E DEO DPI Near xi Introduction and Specifications Operating Instructions Installation 760A 760D 760N Section 1 Introduction and Specifications 1 1 ap ERR ae Nube ns ego 1 1 Features spp wee a E eret E Retro eue en 1 1 CRT Display S EE Vi MEET A ES 1 1 Bar Graph gre Rene 1 2 Dynamic response characteristics for peak program meters 1 2 Time un RUE e Ae Be 1 3 Rear Panel nea qua paqu DIR UR PRA RH RS e Reps 1 3 Safety Standards o san ue ea Pee ee ro et RR oe ATIS 1 3 Specifications a ne sen ee Be eR eed 1 Section 2 Operating Instructions 2 1 Introduction 4 42 ar a nee 2
132. MA 01613 2036 SPRINGFIELD NJ 07081 VERNON HILLS IL 60061 KENT WA 98032 IRVINE CA 92718 VANCOUVER WA 98661 2999 EHIME JAPAN SLATERSVILLE RI 02876 HARRISBURG PA 17105 DALLAS TX 75262 5303 MYRTLE BEACH SC 29577 PHOENIX AZ 85008 4229 NEWTON MA 02158 1057 SUNNYVALE CA 94088 3409 SUNNYVALE CA 94086 8 3 Replaceable Electrical Parts Manufacturers Cross Index Cont Mfr Code 11236 11502 12697 12954 12969 13103 13919 14552 15454 18796 19701 2N936 22526 24546 26364 27014 31918 32997 34371 48726 50139 50434 51406 53387 55680 8 4 Manufacturer CTS CORPORATION RESISTOR NETWORKS DIVISION IRC INC CLAROSTAT MFG CO INC MICROSEMI CORP SCOTTSDALE MICROSEMI CORPORATION WATERTOWN DIVISION THERMALLOY CO INC BURR BROWN RESEARCH CORP MICROSEMI CORP KETEMA RODAN DIVISION MURATA ELECTRONICS NORTH AMERICA INC STATE COLLEGE OPERATIONS PHILIPS COMPONENTS DISCRETE PROD UCTS DIV RESISTIVE PRODUCTS FACILITY AIRPORT ROAD VISHAY ELECTRONIC COMPONENTS BERG ELECTRONICS INC DUPONT DALE ELECTRONICS VISHAY INTERTECHNOLOGY INC COMPONENTS CORP NATIONAL SEMICONDUCTOR CORP ITT SCHADOW INC BOURNS INC TRIMPOT DIV HARRIS SEMICONDUCTOR SEMICONDUCTOR SECTOR UNITRODE INTEGRATED CIRCUITS CORP UICC ALLEN BRADLEY CO ELECTRONIC COMPONENTS HEWLETT PACKARD CO OPTOELECTRONICS DIV MURATA ELECTRONICS NORTH AMERICA INC HEADQUARTERS AND GEORGIA OPE
133. METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 CCF501G10002F 1 65 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 CCF501G10002F A1R66 322 3452 00 RES FXD FILM 499K OHM 1 0 2W TC TOMI S MALL 91637 50 2 64993 A1R67 322 3001 00 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM 91637 CCF501G10R00F A1R68 322 3121 00 RES FXD METAL FILM 178 OHM 1 0 2W TC 100 PPM 91637 CCF501G178R0F A1R69 322 3289 07 RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY 91637 501 10001 A1R70 322 3289 07 RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY 91637 CCF501C10001B A1R71 322 3418 00 RES FXD METAL FILM 221K OHM 1 0 2W TC 100 PPM 91637 501622102 A1R72 322 3001 00 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM 91637 CCF501G10RO00F A1R73 322 3001 00 RES FXD METAL FILM 10 OHM 1 0 2W TC 100 PPM 91637 CCF501G10R00F A1R74 322 3260 00 RES FXD FILM 4 99K OHM 1 0 2W TC TOTAPED 6 91637 501 49900 A1R75 322 3260 00 RES FXD FILM 4 99K OHM 1 0 2W TC TOTAPED amp 91637 501649900 A1R76 322 3248 00 RES FXD FILM 3 74K OHM 1 0 2W TC TOTAPED amp 91637 CCF50G37400F A1R77 322 3097 00 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 CCF501G100R0F A1R78 322 3248 00 RES FXD FILM 3 74K OHM 1 0 2W TC TOTAPED amp 91637 CCF50G37400F A1R79 322 3356 00 RES FXD FILM 49 9K OHM 1 0 2W TC TOMI SMALL BODY 91637 CCF501G49901F A1R80 322 3222 00 RES FXD METAL FILM 2K OHM 1 0 2W TC 100 PPM 91637 501 20000 A1R81 322 3121
134. MPL XSTR SIG BIPOLAR NPN 40V 200MA 300M HZ AMPL XSTR PWR MOS N CH 800V 4 0A 3 0 OHM ATTACHED PARTS NUT PLAIN HEX 4 40 X 0 188 BR S CD PL SCREW MACHINE 4 40 X 0 25 PNH STL HEAT SINK SEMIC XSTR TO 220 VERTICALMOUNT 2 SOLD ERABLE TABS ALUM BLACK ANODIZE END ATTACHED PARTS XSTR SIG BIPOLAR PNP 150V 600MA 100MHZ AMPL THYRISTOR PWR BIPOLAR SCR 50V 16A RMS PHASE RES FXD CMPSN 1 5M OHM 5 1W RES FXD CMPSN 2 2M OHM 5 0 5W RES FXD CMPSN 1 5M OHM 5 1W RES FXD CMPSN 1 5M OHM 5 1W RES FXD CMPSN 1 5M OHM 5 1W RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM RES VAR TRMR CERMET 2 5M OHM 10 0 5W 0 375 Mfr Code 22526 53387 22526 00779 0GV52 TK2058 TK2058 TK2058 16493 04713 0 R04 04713 04713 04713 04713 13103 0 R04 0 R04 OLUA3 73743 TK0435 13103 04713 04713 50139 50139 50139 50139 50139 91637 91637 32997 Mfr Part Number 65561 107 2402 6112 UB 65561 104 1 102844 1 FX326 1 02 K D TSL0807 4R 7M3RO TSL0807 4R 7M3RO TSL0807 4R 7M3RO 8209 MPSA94 2N3904 2N5401RLRP 2N5551RLRP 2N5401RLRP TIP31C 6043P B 2N3904 2N3904 BUK456 800A 12161 50 ORDER BY DESC 6021 2N5401RLRP 2N6400 GB1555 EB2255 GB1555 GB1555 GB1555 CCF501G10002F CCF501G100R0F 3386F 1 255 8 9 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A1R12 1R13 1R14
135. N 10 1 Replaceable Mechanical Parts Parts List Column Descriptions Column Description 1 Figure index number Items this section are referenced by figure and index numbers to the exploded view illustrations that follow 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix 3and4 Serialnumber Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entry indicates the partis good for all serial numbers 5 This indicates the quantity of parts used 6 Name amp description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification 7 Mfr code This indicates the code of the actual manufacturer of the part 8 Mfr part number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI Y 1 1 1972 Chassis Parts Chassis mounted parts and cable assemblies are located at the end of the Replaceable Electrical Parts List Mfr Code to Manufacturer The table titled Manufacturers Cross Index shows codes names and addresses Cross Index of manufacturers or vendors of components listed in the parts list 10 2 760A 760D 760N Replaceab
136. N74LS684N SN74LS123N LT1018CN8 160423400 2 641602 3 MC34084P NE5532P MC1458P NE5532P 671363700 65561 107 65561 104 65561 107 55595 D3F ORDER BY DESC 8 31 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Mir Number Part Number effective Discont d amp Description Code Mfr Part Number MOUNTING PARTS 211 0097 00 SCREW MACHINE 4 40 X 0 312 PNH STL TK0435 ORDER BY DESC QUANTITY 2 END MOUNTING PARTS 1300 131 3208 00 CONN CIRC XLR FEMALE 3 POS SAFTEY CONTROLLED 82389 MOUNTING PARTS 211 0097 00 SCREW MACHINE 4 40 X 0 312 PNH STL TK0435 ORDER BY DESC QUANTITY 2 END MOUNTING PARTS P110 174 0455 00 5 5 20 28 AWG 6 75 L RIBBON TK1547 TO ASSIGNED 135 174 0456 00 CAASSY SP ELEC 34 28 AWG 4 5 LRIBBON TK1547 TO BE ASSIGNED P198 174 0485 00 CA 5 5 3 26 AWG 2 5 LRIBBON TK1352 TO BE ASSIGNED 398 174 0485 00 CA ASSY SP ELEC 3 26 AWG 2 5 LRIBBON TK1352 TO BE ASSIGNED 668 174 0405 00 CA ASSY SP ELEC 3 26 AWG 7 0 LRIBBON TK1352 TO BE ASSIGNED 51 260 2465 00 SWITCH PUSH 0 4A 125VAC W SOLDER LUG BUTTON 31918 602844 WIYELLOW INDICATOR ATTACHED PARTS 174 2648 00 CAASSY SP 80009 174 2648 00 END ATTACHED PARTS 154 0987 00 ELECTRON TUBE CRT D14 375GH 987 80009 154090800 STANDARD ONLY 154 0987 16 ELECTRON TUBE CRT D14 375WA 987 80009 154090816 OPTION 74 ONLY
137. NG PARTS 136 0752 00 SOCKET DIP PCB FEMALE STR 2 X 10 0 3 CTR 0 210 H X 0 128 TAIL TINPH0S BRONZE END MOUNTING PARTS A3U445 156 2817 00 IC LINEAR BIFET OP AMP QUAD A3U453 156 2817 00 IC LINEAR BIFET OP AMP QUAD A3U456 156 1161 00 IC LINEAR BIPOLAR VR POSITIVE ADJ USTABLE 1 5A 496 MOUNTING PARTS 210 0586 00 NUT PL ASSEM WA 4 40 X 0 25 STL CD PL 211 0008 00 SCREW MACHINE 4 40 X 0 25 PNH STL END MOUNTING PARTS A3U462 156 2817 00 IC LINEAR BIFET OP AMP QUAD A3U468 156 1149 00 IC LINEAR BIFET OP AMP A3U590 156 1156 01 IC LINEAR BIFET OP AMP BURN IN NOT FOR NEW DSGN A3U612 156 1225 00 IC LINEAR BIP OLAR COMPTR DUAL OP EN COLL 300NS A3U623 156 4440 00 DIGITAL HCTCMOS COUNTER 4 UP DOWN DECADE PRESETTABLE A3U627 156 0865 00 IC DIGITAL LSTTL FLIP FLOP OCTAL D TYPE CLEAR A3U630 156 2336 00 IC DIGITAL LSTTL COMPARATOR 8 BIT MAGNITUDE A3U635 156 2901 00 IC LINEAR BIPOLAR COMPARATOR DUAL 10US LOW OFFSET LOW POWER A3U638 160 4234 00 IC DIGITAL STTL P LD PAL 16R 6 28 5MHZ 180MA MOUNTING PARTS 136 0752 00 SOCKET DIP PCB FEMALE STR 2 X 10 0 3 CTR 0 210 0 128 TAIL TIN P HOS BRONZE END MOUNTING PARTS A3U645 156 2817 00 IC LINEAR BIFET OP AMP QUAD 8 30 Mfr Code 0CVK3 0CVK3 OCVK3 01295 01295 01295 01295 01295 27014 04713 01295 01295 01295 01295 80009 00779 04713 04713 04713 0435 0435 04713 21014 21014 01295 1CH66 01295 01295 64155 80009 00779 04713 Mfr
138. No No Loc Loc No No Loc Loc 7 C4 M C27 7 Bi 6 F2 G2 ag 6 D3 J R30 7 02 A2 R54 7 F2 Ei R103 7 A2 E2 c2 7 D3 DI C28 7 B1 52 6 J2 1 6 2 4 010 7 A2 R31 7 B3 R55 7 02 D4 R79 6 J2 C3 7 03 2 C29 6 F1 C53 6 ES CR12 6 F2 G1 FIL1 7 6 G3 G3 R32 7 E5 R56 7 El R80 6 J4 RV1 6 02 13 C4 7 D3 A2 C30 6 F2 F2 C54 6 c2 M2 CR13 6 F3 G2 FIL2 7 R33 7 C4 B4 R57 7 B2 R81 6 D3 J c5 7 D4 B3 C31 6 55 6 H3 CR14 6 E2 G3 R1 7 E3 Al R58 7 02 E4 R82 6 C3 J2 7 B2 C4 56 6 B2 M3 CR15 6 E4 G5 Ji 7 Bi R2 7 E4 2 R34 7 C4 B4 R83 6 C5 J2 T2 6 E4 H5 C6 7 C4 B4 C32 6 F2 CR16 6 D5 M 42 6 H5 B5 R3 7 4 A2 R35 7 B3 R59 7 Bi E2 6 E G3 C7 7 F3 C33 6 G2 F4 C57 6 B2 N5 J3 7 F2 Di R4 7 E4 R36 7 B3 R60 7 C1 R84 6 B5 J2 C8 7 D3 B2 C34 7 Di F4 C58 6 B3 J2 CR17 6 E2 12 J4 6 H3 F5 R5 7 E5 R37 7 C5 B4 R61 7 Di E4 TP1 6 F5 C9 7 E B2 C35 6 G3 C59 6 B4 J3 CR18 6 02 12 95 6 Hi R38 7 E2 BI R62 6 D4 R85 6 G4 G5 TP2 6 5 C10 7 C5 B4 C36 6 G2 G3 C60 6 B5 J4 19 6 K3 R7 7 B4 M R63 7 A2 E2 R86 6 D3 J C61 6 D4 M CR20 6 13 96 6 A2 M3 R8 7 B4 M R39 7 E2 R87 6 03 K2 U1 7 Di Ci 7 E2 C37 6 G3 G4 CR21 6 B2 14 6 A2 R11 7 F4 A2 R40 7 02 B2 R64 7 C2 E2 R88 6 B4 J2 u2 7 Bi 12 7 02 C4 C38 6 G2 G4 C62 6 Ei H J11 7 FA 2 R12 7 03 C1 R41 7 B3 R65 7 Bi R89 6 B2 M4 U3A 6 J3 C13 7 D2 C4 C39 6 E
139. Part Number UDN2585A UDN2585A UDN2585A SN74LS42N SN74LS42N SN74LS42N LM337KC LM311P LF351N MC 34084P SN74LS374N SN74LS273N SN74LS684N SN74LS123N 160423400 2 641602 3 MC34084P MC34084P LM317T ORDER BY DESC ORDER BY DESC MC34084P LF351N LF356N A D C LM393P 74HCT190N SN74LS273N SN74LS684N LT1018CN8 160423400 2 641602 3 MC34084P 760A 7600 760N Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Number A3U654 A3U670 A3U680 A3U708 A3U711 A3U715 A3U818 A3U823 A3U825 A3U828 A3U831 A3U835 A3U838 A3U844 A3U848 A3U853 A3U873 A3U880 A3U894 A10 A10J1 A10J 2 A10J3 105 100 Tektronix Part Number 156 2817 00 156 1156 01 156 2815 00 156 0479 00 156 0479 00 156 0733 04 156 1408 00 156 0039 02 156 0721 00 156 4440 00 156 0865 00 156 2336 00 156 1600 00 156 2901 00 160 4234 00 136 0752 00 156 2817 00 156 1272 00 156 0158 00 156 1272 00 671 3637 00 131 5338 00 131 5337 00 131 5338 00 136 1289 00 131 3208 00 211 0097 00 760A 7600 760N Description IC LINEAR BIFET OP AMP QUAD IC LINEAR BIFET OP AMP BURN IN NOT FOR NEW DSGN IC MISC BIPOLAR MISC ANALOG COMPANDOR DIGITAL LSTTL GATES QUAD 2 INPUT OR IC DIGITAL LSTTL GATES QUAD 2 INPUT OR IC DIGITAL LSTTL MULTIVIBRATOR IC MISC CMOS TIMER IC DIGITAL TTL FLIP FLOP DUAL J K W
140. R 0 235 MLG X 0 110 TAIL 30 GOLD 0 025 SQ CON TAIL CON TAIL CON MLG CON MLG CON MLG N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 3 0 1 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 0 230 X 0 120 TAIL 30GOLD BD RETENTION INDUCTOR FXD POWER 100UH 10 I lt 0 75A RDC 0 23 OH CON PRO 0 gt 15 58 gt 5 4 2 CORE N SHUNT SHUNT FEMALE STR 1 X 2 0 1 CTR 0 2 LOW UMPER Mfr Code 27014 27014 27014 27014 53387 TK2469 53387 53387 00779 00779 00779 00779 00779 53387 53387 00779 00779 00779 53387 00779 53387 53387 00779 00779 00779 TK2058 22526 Mfr Part Number FDH9427 FDH9427 FDH9427 FDH9427 2534 5002UB 175 9797 00 2406 6112TB 2406 6112TB 104344 1 104344 1 104344 1 104344 1 104344 1 2406 6112TB 2406 6112TB 104344 1 104344 1 104344 1 2420 6142TB 87232 2 2406 6112TB 2406 6112 104344 1 104344 1 104344 1 68786 202 TSL0807 101KR75 8 19 Replaceable Electrical Parts Replaceable Electrical Parts List Cont
141. R774 04 C870 E4 R775 G5 TP672 C4 C872 E4 R593 C1 R776 G3 688 C876 5 R594 D1 TP866 C891 E2 R600 H4 R777 A5 TP885 F3 C895 F2 R601 H2 R778 G3 C897 F1 R606 C3 R779 G3 U590 C R780 F3 U612A CR616 D3 R607 2 R781 F3 U612B D3 CR780 G3 R608 02 0670 4 CR G3 R609 C3 R782 A2 U680A CR791 H3 R610 D3 R783 H2 U680B CR876 R613 D3 R784 G2 R785 G2 U873A E4 J409 E3 R615 D2 R786 G2 U873B F4 J862 H4 R672 4 U880A F3 J886 H1 R673 B4 R787 G2 U880B F3 R674 5 788 G2 U894A 1 1513 R675 C4 R789 D1 R790 D1 U894B F2 Q620 D3 R676 C4 R794 G2 Q695 G2 R677 A5 Q761 G4 R678 C4 R797 G2 Q766 G5 2 C890 1200PF LOW PASS FILTER R789 R790 1K 5 36K R889 23 2K C897 1200PF 12V 8 U894A 5532 R896 2 55K R895 11 8K C891 e CHANNEL 1 MATCH 1 120PF R693 47 5K GRATICULE ILLUMINATION C895 1 600PF il NOTE J409 IS ACTUALLY 2 SOCKETS ON BOARD 15V R615 C618 18 2 1513 100UH 5V Z CR616 C510 l 100UF E GRATICULE LIGHTS VERTICAL OUTPUT AMPLIFIER C778 1200PF
142. RATIONS 3M COMPANY ELECTRONIC PRODUCTS DIV NICHICON AMERICA CORP Address 406 PARR ROAD PO BOX 1860 12055 ROJAS DRIVE SUITE K 8700 E THOMAS RD 0 BOX 1390 530 PLEASANT STREET 2021 W VALLEY VIEW LN PO BOX 810839 6730S TUCSON BLVD 0 BOX 11400 2830S FAIRVIEW ST 2900 BLUE STAR STREET 1900 W COLLEGE AVE PO BOX 760 1122 23RD STREET 857 OLD TRAIL RD 550 HIGH ST 6 KINSEY PLACE 2900 SEMICONDUCTOR DR 8081 WALLACE RD 1200 COLUMBIA AVE MS 58 71 PO BOX 883 7 CONTINENTAL BLVD PO BOX 399 1414 ALLEN BRADLEY DR 370 W TRIMBLE RD 2200 LAKE PARK DR 3M AUSTIN CENTER 927 STATE City State Code BERNE IN 46711 9506 BOONE NC 28607 1860 EL PASO TX 79936 SCOTTSDALE AZ 85252 WATERTOWN MA 02172 DALLAS TX 75381 TUCSON AZ 85734 SANTA ANA CA 92704 5948 ANAHEIM CA 92806 2591 STATE COLLEGE PA 16801 2723 MINERAL WELLS TX 76067 0760 COLUMBUS NE 68601 ETTERS 17319 BRADFORD PA 16701 3737 DENVILLE 07834 2611 SANTA CLARA CA 95051 0606 EDEN PRAIRE MN 55344 2224 RIVERSIDE CA 92507 2114 MELBOURNE FL 32902 0883 MERRIMACK NH 03054 0399 EL PASO TX 79936 SAN J OSE CA 95131 1008 SMYRNA GA 30080 AUSTIN TX 78769 2963 SCHAUMBURG IL 60195 4526 760A 7600 760N Replaceable Electrical Parts Manufacturers Cross Index Cont Mfr Code Manufacturer 37942 NORTH AMERICAN CAPACITOR CO 56845 DALE ELECTRONICS INC 57668 ROHM CORPORATION 57856 TELTEC INC 6193
143. RES FXD METAL FILM 10K OHM 196 0 2W TC 100 PPM RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 5K OHM 0 1 0 125W TC T9MI RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY RES FXD FILM 4 95K OHM 0 2596 0 125W TC lt 9 RES FXD FILM 2 87K OHM 196 0 2W TC TOMI S MALL BODY RES FXD FILM 75K OHM 1 0 2W TC TOMI SMALL BODY 760A ONLY RES FXD FILM 4 32K OHM 196 0 2W TC TOMI S MALL BODY 760D ONLY RES FXD FILM 9 31K OHM 1 0 2W TC TOMI SMALL BODY 760N ONLY RES FXD FILM 4 455K OHM 0 1 0 125W TC 19 RES FXD FILM 15K OHM 0 1 0 125W TC T9MI RES FXD FILM 150 OHM 1 0 5W TC 10 RES FXD FILM 604 OHM 1 0 5W TC 10 RES FXD FILM 2 7M OHM 5 0 25W RES FXD FILM 7 5M OHM 5 0 25W RES VAR TRMR CERMET 100K OHM 20 0 5W 0 197 RES VAR TRMR CERMET 100K OHM 20 0 5W 0 197 RES FXD FILM 43 2K OHM 196 0 2W TC TOMI S MALL BODY RES VAR TRMR CERMET 500 OHM 20 0 5W 0 197 50 ADJUST RES FXD METAL FILM 5 62K OHM 1 0 2W TC 2100 RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM RES FXD FILM 3K OHM 596 0 25W RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD FILM 10K OHM 0 1 0 2W TC T9 T amp R SM BODY RES FXD METAL FILM 10K OHM 196 0 2W TC 2100 PPM Mfr Code TK2073 TK2073 91637 19701 19701 91637 91637 TK172
144. RT DODGE IA 50501 COLD SPRING KY 41076 9749 PHILADELPHIA PA 19108 1001 BEAVERTON OR 97006 GARDENA CA 90247 1059 BEAVERTON OR 97077 0001 CHICAGO IL 60630 1314 YONKERS NY 10710 3205 OGALLALA NE 69153 1844 TWIN FALLS ID 83301 LAKE OSWEGO OR 97035 COLUMBUS NE 68601 3632 GRANTS PASS OR 97526 SCHAUMBURG IL 60173 8 5 Replaceable Electrical Parts Replaceable Electrical Parts List Component Tektronix Serialno Serial Mir Number Part Number effective Discont d amp Description Code Mfr Part Number A2 670 9532 01 CIRCUIT BD ASSY FRONT PANEL 80009 670953201 A3 671 2383 04 B050000 B052828 CIRCUIT BD ASSY MAIN 80009 671238304 760A ONLY 671 2383 05 B052829 CIRCUIT BD ASSY MAIN 80009 671238305 760A ONLY A3 671 1469 04 B030000 B030174 CIRCUIT BD ASSY MAIN 80009 671146904 760D ONLY A3 671 1469 05 8 030175 CIRCUIT BD ASSY MAIN 80009 671146905 760D ONLY A3 671 1472 04 B030000 B030209 CIRCUIT BD ASSY MAIN 80009 671147204 760N ONLY A3 671 1472 05 8 030210 CIRCUIT BD ASSY MAIN 80009 671147205 760N ONLY A10 671 3637 00 CIRCUIT BD ASSY CRT SOCKET BOARD 80009 671363700 Al 671 2890 10 CIRCUIT BD ASSY POWER SUPPLY 80009 671289010 1 1 281 0775 01 CAP FXD CERAMIC MCL 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A1C2 283 0021 00 CAP FXD CER DI 0 001UF 20 5000V 2058 TCK45YS3H102M A A1C3 283 0261 00 CAP FXD CER DI 0 01UF 20 4000V 18796 DHR28Z5U103M4KV A1C4 28
145. SN74145N SN74145N 671238304 671238305 671146904 671146905 671147204 671147205 3448 3034 SA105E104MAA SA105E104MAA 8 13 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Mfr Number Part Number effective Discont d amp Description Code Mfr Part Number A3C145 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C148 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 149 283 0220 00 CAP FXD CERAMIC MLC 0 01UF 20 50V X7R 0 20 04222 SR155C103MAA 165 290 0782 00 CAP FXD ALUM 4 7UF 20 35V ESR 242 33 OHM 120HZ 20C 55680 UVX1V4R7MAA 172 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 179 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 187 281 0765 00 CAP FXD CER DI 100P F 596 100V 04222 5 102 101 A3C190 290 0990 01 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL 62643 5110296 A3C206 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SA105E104MAA A3C211 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 215 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 251 290 0183 00 CAP FXD TANT DRY 1UF 10 35V TANT OXD 0 151 X 0 317 12954 513 105 035 254 290 0536 00 CAP FXD EL
146. SOCKET BOARD 4 Ji 15 R31 Rat 9 100K 178 H3 R23 is 100V R34 1 5M 1UF 2 00K 1w Q4 R25 R20 AMPLIFIER H3 100 100 3 74K gt ZAXIS k 15 V1 R33 VISUAL AID 13 0K R28 37 4K T 93 FOCUS ASTIG 94 BOARD CAP TM 91 GRID I9 OS GEOM 05 2 Cathode 7 2 R22 26 1K 9 Filament 1 760A 760D 760N STEREO AUDIO MONITOR NOT INSTALLED FOCUS R24 100 1 HORIZ PLATE 9 9 92 1st ANODE HORIZ PLATE x2 9 Filament VERT PLATE y1 HIGH VOLTS POWER SUPPLY 4135 2119 05115 05215 0347 0332 0320 05315 Az R437 R439 423 5 i R424 WW Os N EN R534 5525 ee Static Sensitive Devices A2 Front Panel Board See Maintenance Section Schematic Diagram lt 8 gt Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram Assembly A2 Comp Diag Comp Diag No Loc No Loc C355 c3 R437 G1 R438 F1 DS115 D1 R439 G2 DS215 D3 R451 G1 DS315 04 05412 G3 5516 4 DS416 G4 S525 05418 G4 S534 G2 DS432 G2 S544A G1 DS434 F2 S544B G1 J110 H3 U
147. T R550 7418123 6 7 43 2K R 12V Jj g 9 5 RUE RIGHT BAR ANODE DRIVER 91 RTIMEOUT 9630 RIGHT DYNAMIC RESPONSE CONTROL PPM 5V 4 P1 x 2 6 Pa pi P3 A4 11 83 A5 13 bs A6 15 Po U627 AT 3T po 7415273 0 3 jo aL 3 1 ao 2102 aH gt a1 5 52 71 03 2 02 NOTE R447 R647 Ai 13 02 Qs 32 12 99 GROUND 14 05 45 35 14 04 760A 3 24M vr Q 6 H 06 08 760D 2 00M 1 RDELAY n bey gt ANALOG GROUND 760N 2 00M q RGATE RDELAY PART OF A3 MAIN BOARD 760 7600 760 STEREO AUDIO MONITOR GRAPH DRIVERS Schematic Diagram lt 3 gt Component Locator Chart The schematic diagram has an alphanumeric grid to assist in locating parts within that diagram 760A 760D 760N Assembly Comp Diag Comp Diag Comp Diag Comp Diag No Loc No Loc No Loc No Loc C149 G4 R253 G4 C215 H1 R315 H R852 B1 U7MB F1 C251 G5 R853 C1 F1 C718 A3 R336 D5 R854 B1 U7MD 2 C755 A1 R337 D5 R855 C1 U715A C815 R344 D5 R857 C1 U715B C3 R355 C C818 C2 R356 5340 C5 U818 B3 C819 B3 U825C C841 D1 R423 TP248 0828 C4 C854 B R553 C 454 D1 0831 D2 C855 C1 R554 s 725 C5 U835 E2 C858 C1 R716 A2 U838A D R717 0127 05 CR846 0132 5 U838B C2 CR850 758 1 0137 U844A D CR851 B R815 C3 U142 E4 U844B D CR852 R842 D1 U146 F4 U848 F1 R843 D1 U853A B CR853 B U217 G1 CR854 R844 D1 U317 G1 U853B B
148. TC 100 PPM 91637 CCF501G10002F A3R608 322 3385 00 RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM 91637 CCF501G10002F A3R609 322 3322 00 RES FXD METAL FILM 22 1K OHM 1 0 2W TC 100 91637 501622101 A3R610 322 3354 00 RES FXD METAL FILM 47 5K OHM 1 0 2W TC 2100 91637 501647501 A3R613 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM 91637 CCF501G 10000F A3R615 308 0344 00 RES FXD WW 18 2 OHM 1 3W 91637 RS2B 18R20F TR A3R617 322 3193 00 RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM 91637 CCF501G 10000F A3R632 321 0418 00 RES FXD FILM 221K OHM 1 0 125W TC T0MI 19701 5043 0221 0 A3R637 322 3097 00 RES FXD METAL FILM 100 OHM 1 0 2W TC 100 PPM 91637 CCF501G100R0F A3R641 322 3289 00 RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PPM 91637 CCF50G10001F A3R643 322 3289 00 RES FXD METAL FILM 10K OHM 1 0 2W TC 100 PPM 91637 CCF50G10001F 646 322 3258 00 RES FXD METAL FILM 4 75K OHM 1 0 2W TC 2100 56845 50 2 64751 A3R647 321 1720 00 RES FXD FILM 3 24M OHM 196 0 125W TC 64537 PME55 3 24 A3R648 322 3282 00 RES FXD FILM 8 45K OHM 1 0 2W TC TOMI SMALL BODY 91637 501684500 A3R649 322 3314 00 RES FXD METAL FILM 18 2K OHM 1 0 2W TC 2100 91637 CCF501G18201F 760A ONLY A3R652 322 3289 07 RES FXD FILM 10K OHM 0 1 0 2W TC 19 T amp R SM BODY 91637 CCF501C10001B A3R653 322 3289 07 RES FXD FILM 10K OHM 0 1 0 2W TC 19 T amp R SM BODY 91637 CCF501C10001B A3R655 322 3373 00 RES FXD FILM 75K OHM 1 0
149. U DIODE SIG U DIODE SIG U RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 TRA FAST 40V 150 TRA FAST 40V 150 TRA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 L 4 L L L L L L L L L L L L LTRA FAST 40V 150 LTRA FAST 40V 150 FAST RCVRY 400V 1 L LTRA FAST 40V 150 L L L L L L L L L L L L L RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 RA FAST 40V 150 4 5 2 4 5 2 4 5 2 OOV 1A IF SM 30A 1 2VF 2US 4 5 2 4 5 2 4 5 2 4 5 2 RA 5 40 150 4 5 2 4 5 2 4 5 2 4 5 2 RA 5 40 150 4 5 2 4 5 2 4 5 2 4 5 2 5 40 150 4 5 2 4 5 2 4 5 2 200 5 5 40 150 4 5 2 4 5 2 4 5 2 4 5 2 RA FAST 40V 150MA 4NS 2PF 4 5 2 4 5 2 4 5 2 5 40 150 4 5 2 4 5 2 4 5 2 4 5 2 FAST 40V 150MA 4NS 2PF RA FAST 40V 150MA ANS 2PF 4 5 2 5 40 150 4 5 2 4 5 2 4 5 2 Code Mfr Part Number OLUA3 1 5060 27014 9427 27014
150. V NOTE The Low Volts Power Supply troubleshooting is performed without applying AC power b Disconnect AC power from the instrument Disconnect the instrument from the Power Supply by removing the Jumper from J4 Use the digital multimeter to measure the voltage between 2 and the tab drain of Q9 Be sure the voltage is near 0 V before proceeding 760A 7600 760N Maintenance CAUTION Do not proceed until the the drain of Q9 is near 0 V Dangerous voltage potentials are present in the circuit until the capacitors discharge 2 Rectifier Switcher Check a Use the digital multimeter to measure the voltage between TP2 and the tab drain 09 Be sure the voltage is near 0 V before proceeding Unsolder and lift one end of R102 With the negative lead of the digital multimeter connected to TP2 and the positive lead connected to the tab of Q9 measure the circuit resistance A resistance of less than 20 KQ indicates a shorted mosfet Q9 If the mosfet is shorted replace it and perform the Control Circuit Check Using the digital multimeter diode test function test CR21 22 CR23 and CR24 for shorts Diode replacements must be fast reverse recovery 300 ns types to reduce conducted noise Reconnect the lifted end of R102 3 Output Check a Connect the negative output from the 20 VDC Power Supply to TP1 Connect the positive output to W4 15 V The circuit should draw less than
151. XD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 SAl05E104MAA A3C618 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 646 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 649 285 1349 00 CAP FXD MTLZD 0 1UF 596 63VDC TK1913 MKS2 1 63 5 A3C650 285 0905 00 CAP FXD PLSTC 0 33UF 5 50V 8441 TEK34 335 50 A3C660 281 0765 00 CAP FXD CER DI 100P F 596 100V 04222 5 102 101 A3C663 290 0990 01 CAP FXD ELCTLT 10UF 20 50VTAPE amp REEL 62643 5110296 670 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 690 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 695 290 0488 00 CAP FXD ELCTLT 2 2UF 10 20V 2N936 1500225 9020 2 708 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C711 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C712 281 0812 00 CAP FXD CERAMIC MLC 1000PF 10 100V 0 100 X 04222 101 102 A3C715 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C718 283 0142 00 CAP FXD CER DI 0 0027UF 596 200V TK2058 45 20272 724 290 0297 00 CAP FXD ELCTLT 39UF 10 10V 12954 9 725 290 0297 00 CAP FXD ELCTLT 39UF 10 10V 12954 9 728 281 0775 00 CAP FXD CERAMIC MLC 0 1UF 20 50V Z5U 0 170 04222 5 105 104 A3C731 281 0775 00 CAP FXD C
152. age is the larger of the Horizontal or Vertical signals as determined by the comparator U361 Gain Control Vertical U680 is a dual gain control circuit This circuit rectifies a control signal and buffers it to attack capacitor C586 and decay capacitor C581 The dc level controls the transconductance of the AG block In the gain control circuit the AG circuit is used to control the ac feedback of an op amp such that the output level stays constant for input signal between about 20dB to about 8 dB for the standard 760A This range changes to about 25 dB to 5 dB for the 760D and about 15 dB to 15 dB for the 760N The attack and decay capacitors allow for fast gain reduction on signal peaks and for slow recovery to keep low frequency signals from pumping the gain The dc feedback is provided by R593 R685 and C588 R686 corrects for dc offset allowing maximum output amplitude R782 offset adj trims out pattern bounce that would result from the control signal appearing at the output Low Pass Filter Vertical U894 is a four pole low pass filter with a cutoff at about 34 kHz R789 is adjusted for phase match between the two channels Output Amplifier Vertical The output amplifier is a differential cascaded amplifier with R601 VERT POSITION adjusted for centering and R786 adjusted for gain Z Axis Dimming The Z Axis circuit prevents CRT burn by turning off the CRT when the larger of the horizontal or vertical sig
153. al No Discont d amp Description DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF DIODE SIG ULTRA FAST 40V 150MA 4NS 2PF DIODE SIG ULTRA FAST 40V 150MA 4NS 2 CON N HDR PCB MALE RTANG 2 X 17 0 1CTR 0 33D ASSY SP FLAT FLEX FLX 10 27 AWG 2 5 L 1X10 BOX X STR CON CON CON CON CON CON MLG CON MLG CON TAIL CON TAIL CON MLG CON MLG CON MLG CON CON TAIL TAIL TAIL TAIL TAIL SLDR TAB CONN NON PLZ N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230MLG X 0 120 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230MLG X 0 120 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230MLG X 0 120 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 6 0 100 CTR 0 230 X 0 110 30 GOLD N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 1 X 3 0 1 CTR 0 230 X 0 120 TAIL 30GOLD BD RETENTION N HDR PCB MALE STR 2 X 10 0 1 CTR 0 235 N HDR PCB MALE RTANG 1 X 2 0 1 CT
154. al Parts List Cont Component Number A3R683 A3R684 A3R685 A3R686 A3R687 A3R688 A3R693 A3R694 A3R700 A3R716 A3R717 A3R720 A3R720 732 A3R 733 A3R 734 A3R735 A3R736 A3R 737 A3R 738 A3R743 751 A3R752 A3R 753 755 A3R756 A3R757 A3R758 A3R759 A3R760 A3R761 A3R762 A3R763 A3R 764 A3R 766 A3R 767 A3R 769 A3R 770 A3R 771 8 26 Serial No Discont d Serial no effective Tektronix Part Number 322 3450 00 322 3193 00 322 3385 00 322 3481 00 322 3147 00 322 3258 00 322 3354 00 322 3222 00 311 2262 00 322 3158 00 322 3281 00 311 2212 01 366 1701 01 322 3097 00 322 3097 00 322 3289 00 322 3097 00 322 3097 00 322 3289 00 322 3097 00 322 3289 00 322 3289 07 322 3289 07 322 3289 00 322 3289 07 322 3318 00 322 3373 00 311 2230 00 311 2234 00 322 3246 00 322 3130 00 321 1612 07 321 0603 07 323 0114 00 323 0172 00 322 3289 00 322 3354 00 322 3222 00 322 3193 00 Name amp Description RES FXD FILM 475K OHM 1 0 2W TC TOMI SMALL RES FXD METAL FILM 1K OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 100K OHM 1 0 2W TC 100 PPM RES OHM 1 0 2W TC TOMI SMALL BODY RES FXD METAL FILM 332 OHM 1 0 2W TC 100 PPM RES FXD METAL FILM 4 75K OHM 1 0 2W TC 100 RES FXD METAL FILM 47 5K OHM 196 0 2W TC 2100 RES FXD METAL FILM 2K OHM 196 0 2W TC 2100 PPM RES VAR NONWW TRMR 1M OHM 2096 0 5WLINEAR MI RES FXD FILM 432 OHM 1
155. an be removed with T15 screwdriver tip Tektronix part number 006 3461 00 exception is 2 Pozidrive screws which fasten the front panel POWER switch rear panel XLR connectors They can be removed with 1 Pozidrive tip 003 0443 00 1 Remove two bezel retaining screws See Figure 4 3 ar bezel removal screws Figure 4 3 Bezel removal 4 13 Maintenance Graticule Light Removal 4 14 Removal of the AN Replacing the CRT 2 Grasping the bottom of the bezel pull out and upward bezel has two hinges that hold the top in place that need to be cleared 3 replace reverse the procedure 1 Remove the bezel following the preceding procedure 2 Using a pair of needle nose pliers gently grasp the graticule light and carefully pull straight out 3 The light is replaced by carefully lining up the holders with the round pins that they are to be inserted into Use the needle nose pliers to lock them back into place 4 Replace the bezel 1 Remove the bezel WARNING The CRT may retain a dangerous charge Ground the conductor of the anode to discharge the CRT Do not allow the conductor to touch your body or any circuitry 2 Slide a screwdriver with an insulated handle under the anode cap on the side of the CRT and ground the anode to the chassis to discharge the CRT DO NOT touch the metal shaft of the screwdriver whil
156. an oc c N S S N IN O Loc B4 B5 4 4 5 4 C1 A2 B2 C1 C1 B1 C1 D2 D2 B5 A2 A3 D3 04 04 04 4 D1 D1 D1 4 D1 C1 D2 C2 D1 C1 A1 G5 H4 G5 B2 B2 B1 B1 H2 D4 D4 D4 G5 G5 D4 G5 A5 G3 F3 F3 A2 H2 Comp No R784 R785 R786 R787 R788 R789 R790 R794 R797 R798 R815 R820 R821 R824 R842 R843 R844 R845 R846 R849 R851 R852 R853 R854 R855 R856 R857 R858 R861 R863 R864 R865 R866 R867 R868 R875 R876 R877 R878 R881 R882 R887 R888 R889 R895 R896 5340 151 248 255 TP323 TP351 TP357 TP454 548 551 Diag Diag No oa anana O1 O1 C 9 G S IO IO anana dedii d Loc G2 G2 G2 G2 G2 D1 D1 G2 G2 G2 C3 B3 B3 A3 D1 D1 D1 E1 D1 B1 A1 B1 C1 B1 C1 H1 C1 G4 H4 G4 G5 G5 G4 D4 E4 4 G1 H1 G1 G1 D1 E2 2 5 5 H4 G5 D5 E2 G2 D1 E4 C1 Comp No TP552 TP554 TP568 TP621 TP672 TP688 TP725 TP745 TP778 TP866 TP885 ccccc 27 32 37 42 46 U158 U 61A 61B 67 U172 U U U U 79A 79B 79C 79D U208 U213 U217 U223 0308 0313 0317 0357 0361 0368 U379A U379B U379C
157. cy Response 2 0 5 dB 20 Hz to 20 kHz 760A 18 to 20 dB 7600 5 to 20 dB 760N 15 to 18 dB Gain Match 0 3 dB 12 Crosstalk A full scale indication on any bar SELECT setto AUX 13 causes no indication on any other bars 760A 760D 760N 1 5 Introduction Specifications Table 1 4 Environmental Limits Characteristic Supplemental Information Temperature Stored 55 C to 75 Operational 0 C to 50 C Humidity Operational Will operate at 95 relative humidity for up to five days Do not operate with visible moisture on boards Altitude Stored 50 000 feet Operational 15 000 feet Vibration Operational 15 minutes each axis at 0 025 inch with frequency varied from 10 55 10 Hz in 1 minute cycles with instrument secured to vibration table 10 minutes each axis at any resonant frequency or at 55 Hz if no resonant frequency is found Shock Non Operating 5005 1 2 sine 11 ms duration 3 shocks per surface Transportation Qualified under NTSB Test Procedure 1 A Category 30 inch drop Table 1 5 Physical Characteristics Characteristic Supplemental Information Height 5 25 inches 13 3 cm Width 8 424 inches 21 4 Length 16 875 inches 42 9 cm Weight Approximately 10 pounds 1 6 760A 7600 760 Introduction and Specifications Table 1 6 Certifications and Compliances EC Declaration of Conformity Meets intent of Directive 89 336 EEC for Electromagnetic Compatibility Compliance was
158. d through C11 to a rectifier made up of CR1 and CR3 The rectified clipped sine wave is the CRT control grid bias voltage C9 couples the blanking signal from the Z Axis Amplifier to the CRT control grid DS1 and DS2 limit the CRT grid to cathode voltage at instrument turn on or off DS3 limits the CRT heater to cathode voltage 100 V Z AXIS AMPLIFIER This is an inverting amplifier with negative feedback R22 is the feedback resistor while R7 R20 and R33 act to maintain the summing junction at 5 V Without any Z Axis input current the amplifier output is approximately 10 V Negative Z Axis input current will cause the output to go positive Q5 is a current amplifier feeding the output stage Q3 and Q4 form a push pull output stage Q3 acts as a 2 7 mA constant current pull up while Q4 is the 760A 760D 760N Theory of Operation 760A 760D 760N pull down transistor C6 speeds up the amplifier by coupling AC signals to base of Q3 CR2 and R41 protect the amplifier during CRT arcing CRT The pinout for the CRT is shown in Figure 6 3 Filament f Cathode k GRID 91 FOCUS 03 ASTIG 04 GEOM 95 VERT PLATE y2 VERT PLATE 1 HORIZ PLATE x2 1st ANODE 02 HORIZ PLATE x1 Filament f Figure 6 3 Pinout of the CRT Socket 6 11 Theory of Operation 6 12 760A 760D 760N u Options Section 7 Options Introduction OPTIONS CRT Options Power Cord Options
159. e doing this Disconnect the anode cap by prying it gently away from the CRT 3 Disconnect P419 trace rotation on the Main board and push the connector through the hole in the board 4 The CRT can now be pulled straight out some pressure may be needed The CRT shield along with the grommet around its front and the rubber manchet around its back should come out with the CRT 1 Ifthe CRT is to be replaced remove the metal shield from the neck of the old CRT and place it around the neck of the new CRT with the WARNING sticker towards the top of the instrument This should place the opening in the grommet on the front edge of the shield towards the bottom of the instrument Ensure that the rubber manchet is on the back edge of the shield 760A 760D 760N Maintenance Rear Panel Removal Replacement Front Panel Assembly Removal and Replacement 760A 760D 760N 2 Slip the CRT part way back into position and feed the trace rotation wires and plug back through the hole in the Main board WARNING The CRT may retain a dangerous charge Ground the the anode connector to discharge the CRT Do not allow the conductor to touch your body or any circuitry Bow N Use a screwdriver to ground the anode connector on the CRT to the chassis Slide the CRT into the instrument guiding the rubber manchet on the end of the shield into the rear CRT support Align the socket on the A10 CRT Socket board w
160. e following voltages using the digital multimeter Table 4 5 High Voltage Oscillator Test Points Circuit Location Voltage T1 pin 4 Approximately 40 V T1 pin 13 Less than 42 V U2 pin 2 Approximately 4 8 V U2 pin 6 4 to 11 V CR9 cathode Approximately 100 V CRT Voltage Check NOTE This check requires a high voltage probe having an input resistance of 1 GQ or more Connect the high voltage probe ground to m Load the Low Volts supply with the instrument or with a 200 2 watt resistor loading the 5 V supply m Turn the power supply m Use the high voltage probe to measure the voltage at the anode of CR4 It should be approximately 2530 V m Measure the voltage at the anode end of CR3 It should be 50 150 V more negative than the reading from the anode of CR4 760A 7600 760N Maintenance MECHANICAL DISASSEMBLY AND ASSEMBLY A A Bezel Removal 760A 7600 760 Before removing parts from the 760A disconnect the power cord and then remove the instrument from its cabinet Reassembly is performed by reversing the steps used to disassemble the instrument WARNING For your protection and to avoid damage to the instrument when removing or replacing any of the circuit boards shut the instrument off CAUTION Do not reinsert screws in the rear panel when removed from the cabinet NOTE All screws unless otherwise noted are TORX_ screws and c
161. e stereo signal s overall energy distribution The pattern orientation tells you at a glance whether the present mix is balanced or concentrated to either side Figures 2 6 and 2 7 illustrate different energy distributions Figure 2 6 Strong left content 760A 7600 760N Operating Instructions Monaural Compatibility Polarity Reversal 760A 7600 760N Figure 2 7 Well balanced stereo Transmitting a mono compatible stereo television signal is and will remain critical for broadcasters since most viewers have monaural receivers The 760A pattern display and the L R bar indicate the fitness of your audio for monaural reception Figures 2 7 and 2 8 show respectively a stereo signal well suited for monaural reception and a stereo signal unsuited for monaural use due to its large L R out of phase component Figure 2 8 Stereo unsuited to monaural reception Routing audio through a complex studio presents many opportunities to introduce polarity reversals Any time a polarity reversal occurs the 760A can be used to trace the problem back to its source quickly By introducing a sine Operating Instructions Clipping wave into both channels of the system and checking outputs stage by stage the source of the phase reversal can be quickly identified Another problem illustrated clearly by the 760A is clipping Regardless of its source clipping manifests itself on the 760A pattern display as a squar
162. eable Electrical Parts 8 1 Parts Ordering Information 8 1 Using the Replaceable Electrical Parts 4686 8 1 Column Descriptions i15 ks ee es 8 2 Cross Index Mfr Code Number To Manufacturer 8 3 Replaceable Electrical Parts 8 6 Diagrams and Circuit Board Illustrations Section 9 Diagrams Circuit Board Illustrations 9 1 Replaceable Mechanical Parts Section 10 Replaceable Mechanical Parts 10 1 Parts Ordering Information 10 1 Using the Replaceable Mechanical Parts List 10 1 Column Descriptions ssis na de ow ae da e Re S 10 2 Cross Index Mfr Code Number to Manufacturer 10 3 760A 7600 760N iii Contents List of Figures Figure 1 1 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 Figure 3 1 Figure 4 1 Figure 4 2 Figure 4 3 Figure 4 4 Figure 4 5 Figure 5 1 Figure 5 2 Figure 6 1 Figure 6 2 Figure 6 3 LED Bar Graph scales for the 760A 7600 and 760N 1 1 760A Front Panel iu a weddings 2 2 160A Rear Panel urn pirqa 2 3 760A Sound
163. ektronix Inc field office or representative Changes to Tektronix instruments are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest circuit improvements developed in our Engineering Department It is therefore important when ordering parts to include the following information in your order 1 Number 2 Instrument Type or Number 3 Serial Number 4 Modification or Option Number if applicable If a part that has been ordered has been replaced with a new or improved part the local Tektronix field office or representative will contact the customer concern ing any changes in the part number After repair the circuits may need readjustment TROUBLESHOOTING INFORMATION DAC Servicing 760A 7600 760N The following paragraphs describe information contained in ROMs in the 760A It is intended to help the technician isolate any problems that appear to originate with the DAC The service switch S340 selects different look up tables in the scale shaper ROM Positions 8 amp 9 are unused Position 0 selects normal scale Position 1 is the Expanded scale that is also enabled when the EXPAND SCALE push button is depressed Position 2 an absolute linear scale used for DAC linearity checks which has 35 leading zero positions and two all ones positions for markers 4 5 Maintenance PAL Signal Specification 4 6 Position 3 step functio
164. er Left 6 5 Peak Hold On Of chia areae ee ada Rp UR 6 5 SCANNER DRIVER amp DAC lt 3 gt 6 6 Master Clock iis ee RR Ro IR ag as 6 6 Down ner een ee ae 6 6 Scale Shaper Lookup Table 6 6 ii 760A 7600 760N Contents nee ea a oder dentin ya 6 6 LOW VOLTAGE POWER SUPPLY 6 6 6 Line Rectifier and Filter seperi seri em RR Ce Re 6 7 Pulse Width Modulator 6 7 Output Filters een en RR CHEER 6 8 Eror Amplifier 6 8 Feedback Transformer Driver and Peak Detector 6 8 Output Under Voltage 6 8 HIGH VOLTAGE POWER SUPPLY lt 7 gt 6 9 HV Osc and Error Amp 6 9 Power Supply Outputs 6 10 F cus Amplifier sli er ete t ENDE RES 6 10 Gnd Drive Circuit u nee m ee erc des 6 10 Z AXIS su eed es REUS 6 10 CRT pues Ende eue entier 6 11 Options Section 7 Options 7 1 OptI nS p te dere e Eb A RN RIPE 7 1 Replaceable Electrical Parts Section 8 Replac
165. heck Step No 2 760A 8 dB to 20 dB 0 dB bar reference 760D 5 to 25 dB 760N 15 to 15 dB Gain Match and Track 40 3 dB ing over AGC range Phase Match 1 9 00 Frequency Response 0 5 dB 20 Hz to 20 kHz throughout AGC Control Range Z Axis Dimming With absence of signal 10 Bar Graph 100 Segment LED 760A Green to 0 dB red above 1600 Green to 0 dB red above 760N Green to 6 dB red above 1 4 760A 7600 760N Introduction Specifications Table 1 3 Electrical Characteristics Cont Perf Check Characteristic Performance Requirement Supplemental Information Step No Display Range 760A Normal 8 dB to 45 dB Expanded 5 dB to 11 dB 760D Normal 5 dB to 50 dB Expanded 5 dB to 13 dB 760N Normal 15 dB to 36 dB Expanded 3 dB to 6 dB Scale 760A dB linear from 8 to 20 dB 760D Progressively compressed 160 dB linear from 15 0 24 dB Resolution 760A 0 4 dB segment from 8 to20 dB 0 04 dB segment with EXPAND SCALE depressed 760D 0 25 dB segment from 0 to 5 dB tapering to 2dB segment from 40 to 50 dB 0 125 dB segment with EXPAND SCALE depressed 760N 0 5 dB segment from 15 to 24 dB 0 1 dB segment with EXPAND SCALE depressed Accuracy 0 3 dB at 0 dB and 1 kHz 3 Peak Hold Indicated peaks held approximately 3 9 seconds Attack Decay Dynamics Conforms to DIN 45 406 760N also conforms to Technical Recommendation N9 Frequen
166. hen cycle on and off every couple of seconds 4 MULTIPLIER The High Voltage Power Supply generates heater cathode control grid focus anode and post accelerating potentials required to display the outputs of the Vertical and Horizontal Output Amplifiers The High Voltage Power Supply is generated by a sine wave oscillator and step up transformer Q6 and are the principal elements of an Armstrong oscillator running at about 22 kHz Error Amplifier U2 regulates the 100 V output and keeps the High Voltage Power Supply constant under varying load conditions by controlling the base current to Q6 The 100 V output is regulated directly while the High Voltage Power Supply is indirectly regulated through a current feedback circuit R48 C16 R60 and R64 form the High Voltage Power Supply Current Feedback circuit As the current from the High Voltage Power Supply is increased the voltage to the side of the Error Amplifier U2 increases which increases the base drive to Q6 the HV Osc This current feedback compromises the regula tion of the 100 V supply to keep the high voltage constant with varying intensities C66 and Q10 are a Start Delay circuit that holds the Error Amplifier output low through CR30 until C66 is charged Delaying the start of the high voltage oscillator allows the Low Voltage Power Supply to start unencumbered by the load from the high voltage oscillator 6 9 Theory of Operation 6 10
167. her circuitry appears on A B C l DECOUPLED OR FILTERED VOLTAGE CHANGED PLUG m PART WIRE STRAP MODULE REAR 12V3 PORTS PANEL NEGATIVE INPUT R5 nso 1 Y n 10 20 fale wa R100 1 A 2 N 74 NC 7 0 OHM Y 3 gt gt REFER TO WAVEFORM 74 100 4 BNC PAD FEMALE 0 PANEL NOMENCLATURE 8 CLOCKWISE HEAT SINK PART NAME UE C AJUSTMENT 95V H SCHEMATIC amp R55 SEE PARTS LIST BOARD REF a 100 0 FOR SELECTION N ROTATE 60 20k RIA 7 W751 SCREWDRIVER _ BASE DRIVE ADJUSTMENT 11 8V amp SNUBBER ANALOG BOARD SQUARE PIN 5 CIRCUIT BOARD OUTLINE INSTRUMENT NAME lt COMPONENT LOCATOR GRID 9 2 VERTICAL INPUT SCHEMATIC NAME amp NUMBER 4 SEE PARTS LIST FOR EARLIER VALUES AND SERIAL NUMBER RANGES PART OF A1 MAIN BOARD Al ASSEMBLY NUMBER A 760A 7600 760N Main Board Diagram Component Locator with cross references to schematic diagrams 1 2 3 4 and 5 Comp No 25 27 32 45 48 49 65 72 79 87 90 206 C211 C215 C251 C254 C255 C258 C261 C262 C263 C267 C268 C279 C287 C290 C324 C328 C332 C333 C338 C343 C344 C349 C361 C368 C369 C379 C387 C390 C406 C411 C415 C436 C445 C448 C450 C453 C457 C458 C459 C461 C462 C468 C469 C479 C487
168. ield of T3 When 09 turns off the drain voltage flies back in a positive direction Current now flows in all of the secondary windings and supplies power Line Rectifier and Filter The input line voltage is filtered by rear panel connector to reduce the electrical noise conducted into or out of the instrument R89 limits the initial charging current through the rectifier diodes and C54 CR21 CR22 CR23 and CR24 form a bridge rectifier C54 filters the 110 to 350 VDC rectifier output L4 filters the switching noise produced by the switcher R102 reduces the circulating current in the parallel circuit consisting of L4 and C44 DS4 R93 and R94 form a line voltage indicator R91 and R92 charge C42 C42 provides power to 05 until the primary housekeeping winding provides power through CR17 Pulse Width Modulator SIMPLIFIED PULSE WIDTH MODULATOR CIRCUIT OSCILLATOR SWITCHER MOSFET R83 FROM 10 0K PEAK DETECTOR R84 24 9 US is current mode pulse width modulator PWM current mode PWM uses two feedback loops The inner current feedback loop directly controls the switcher mosfet peak current The outer voltage feedback loop programs the inner loop peak current trip point 760A 7600 760N 6 7 Theory of Operation Output Filters Error Amplifier Feedback Transformer Driver and Peak Detector 6 8 Output Under Voltage Shutdown 05 pin 2 15 inverting input of an internal op amp
169. in 3 Performance Check Calibration Procedures Performance Check Procedure 1 Initial Alisnment NOTE This step must be performed prior to beginning this procedure a Setthe 760A for a Sound Stage orientation on A3 Main board J273 1373 to pins 2 and 3 and install the Sound Stage graticule if your 760A is not set up in this way See Figure 5 1 for jumper locations ASSEMBLY A3 FRONT MAIN BOARD m od 008 mg l n RIGHT 88 00 6000 INPUT BoD INF JJ INPUT 12 08 H 150000 3399 TERMINATION 7657 1385 1392 16 dB zu 150 JUMPER L _ LEGEND TOP R155 ASSEMBLY A3 8252 R262 FRONT MAIN BOARD 5340 Lg R253 RJ 94351 e R352 Figure 5 1 Jumper top and adjustment bottom locations on the A3 Main board 5 2 760A 760D 760 Performance Check Calibration Procedures 760A 760D 760N Connect the 760 series AC power cord to the variable autotransformer Turn power on and set the autotransformer to the local nominal mains voltage either 110 220 volts Set the GRATICULE illumination so the graticule markings are clearly visible With no inputs to the LEFT or RIGHT AUDIO INPUTS set the INTENSITY control for an easily visible dot Set the VERTICAL and HORIZONTAL POSITION controls so the illuminated dot is centered on the graticule Set the INTENSITY control to a comf
170. in the scale shaper ROM and is used to keep from displaying peaks below 20 dB PIN6 PK ON peak on a high level from the PEAK ON flip flop 0823 turns on the PEAK HOLD feature PIN7 GREATER goes low when DAC ramp is greater than the stored peak PIN8 not used 12 GATE goes low to reset the peak value latch after three second timer has timed out 760A 760D 760N Maintenance PIN 18 DELAY makes low to high transition when the current signal value 18 gt the stored peak value This clocks the current value into the peak value latch and starts the peak hold time out circuit PIN19 BAR ENABLE goes low when a segment should be lit The following pins are internal nodes without external connection PIN 13 LCMP is a delayed and inverted CMP signal PIN 14 PEAK goes high when the first peak segment should be turned on PIN 15 DPEAK goes high when the second peak segment should be turned PIN 16 S S and CLEAR PIN 17 are state variables for a state machine that looks for the low to high transition of TIMEOUT Power Supply Troubleshooting Procedure NOTE A review of the power supply theory of operation is recommended before attempting repairs The equipment needed to troubleshoot the power supply Digital Multimeter DMM with a diode check function Oscilloscope 0 to 20 VDC Variable Power Supply Clip Lead to short across a component High Voltage Probe 1 GQ input resis
171. ing off of the pattern edges Figure 2 9 illustrates a severe case of clipping The 760A s AGC keeps the pattern within the screen boundaries in spite of the amplitude of the signals Figure 2 9 Severe clipping of stereo signal 760A 7600 760N WARNING The following servicing instructions are for use only by qualified personnel To avoid injury do not perform any servicing other than that stated in the operating instructions unless you are qualified to do so Refer to all Safety Summaries before performing any service aw um Installation Section 3 Installation Unpacking Electrical Installation Power Source A Mains Frequency and Voltage Ranges Changing Input Sensitivity Standard 760A only 760A 760D 760 At installation time save the shipping carton and packaging materials for repackaging in case shipment becomes necessary See Repackaging for Shipment in SECTION 6 MAINTENANCE for repackaging instructions This instrument is intended to operate from a single phase power source having one of its current carrying conductors at or near earth ground the neutral conductor Only the Line conductor is fused for over current protection Systems that have both current carrying conductors live with respect to ground such as phase to phase in multiphase systems are not recommended as power sources WARNING For your pr
172. isplay Display Orientation 760A 760D 760 AUDIO INPUTS RIGHT AUXILIARY The CRT display provides visual feedback of the amplitude and relative phasing of the stereo audio signal With this display you can determine the fitness of audio signals for monaural or stereo transmission reception Audio system phase errors can also be measured on the 760A CRT display The 760A is shipped from the factory set for Sound Stage display orientation This orientation provides a display where monaural amplitudes are displayed on the vertical axis and stronger left content in the stereo signal would deflect the signal toward the left 45 axis L line on the Sound Stage graticule An alternate XY graticule is shipped as a standard accessory with the 760A This graticule can be installed if you are familiar with or desire the display orientation provided by an XY monitor Instructions for installing the XY graticule are found in SECTION 3 INSTALLATION Operating Instructions Graticule graticule provides calibrated reference marks for a variety of uses Both graticule options have the same markings and differ only in their orientation Figures 2 3 and 2 4 show the Sound Stage and XY graticules AMPLITUDE MARKS PHASE _ MARKS PHASE TANGENT LINES N PHASE MARKS AMPLITUDE MARKS Figure 2 4 760 Graticule 2 4 760 760D 760 Operating Instructions LED BARS 760A
173. ith the pins and key on the CRT Gently push the CRT and the socket board together until the CRT pins are fully seated in the socket Replace the trace rotation connector P419 Main board and snap the anode lead onto the anode connector on the side of the CRT Wipe the faceplate of the CRT to remove fingerprints then replace the bezel If the fit is too tight to allow the bezel to go into position or if the CRT has a loose fit after the bezel is completely tightened down then the rear CRT support must be repositioned To reposition the rear CRT support loosen the two nuts that hold the support in place With the CRT and bezel in place push the support towards the front of the instrument until it is snug against the rubber manchet on the rear of the CRT shield Tighten the two support nuts Remove the two Pozidrive screws from each rear panel XLR connector Remove the five screws from the rear panel To replace reverse the procedure Remove multi pin connectors P110 and P135 from the Main board Remove the two screws that hold the front panel assembly in place The assembly can now be removed by slipping it through the front To access the Front Panel board components a Remove two knobs from the front 4 15 Maintenance LED Bar and Socket Removal and Replacement Main Board Removal and Replacement 4 16 b Remove four screws from rear board may now be separated from the front panel
174. jor functional blocks of circuitry Each block directly relates to a portion of circuitry on a schematic that is described in detail in this section The name of each schematic diagram is listed as a paragraph title upper case and is followed by the diagram number in parenthesis The circuit blocks on each diagram follow the appropriate diagram title When identical circuits exist for vertical and horizontal or for left or right channels only one will be described Figure 6 1 on the following page is the 760A 760D 7603 block diagram DETAILED CIRCUIT DESCRIPTIONS INPUT AMPLIFIERS lt 1 gt 760A 7600 760N LEFT RIGHT and AUX input amplifiers are instrumentation amplifier circuits For the standard 760A 760D 760N the gain in dB may be selected by moving J185 J385 or J657 for the LEFT RIGHT or AUX respectively to the appropriate pins for reference levels of 0 4 8 12 or 16 dBu There is an additional position U which is provided for installations which use a reference level other than these See SECTION 3 INSTALLATION for instructions on calculating the proper resistor values The 760D and the 760N are designed to indicate 0 dB and 6 dB respectively with 1 55 V ms input This is in accordance with DIN 45 406 and for the 760N Technical Recommen dation N9 In order to accomplish this resistors of the appropriate value have been installed in the positions selected by the U settings of J185
175. l Assembly Removal and 4 15 LED Bar and Socket Removal and Replacement 4 16 Main Board Removal and Replacement 4 16 Power Supply Board Removal and 4 17 Repackaging aus ay ene de saa is 4 17 Performance Check Calibration Section 5 Performance Check and Calibration Procedures 5 1 Introduction 2 282228 E epe sr Ea RE oet eps 5 1 Required Test Equipment 5 1 Performance Check Procedure 5 2 Calibration 5 11 Theory of Operation Section 6 Theory of Operation 6 1 Introduction de CHOR EQ VENCER 6 1 Block Diagram Lev o us ox AR RR 6 1 Detailed Circuit Descriptions 6 1 INPUT AMPLIFIERS lt 1 gt 6 1 MATRIX amp AGC CONTROL LOGIC 4 6 2 AGC amp CRT DEFLECTION AMPLIFIERS lt 5 gt 6 3 LEVELINDICATORS og EORR 6 3 GRAPH DRIVERS 2 6 4 Dynamic Response Control 6 4 Signal Peak Processor Left 6 4 Bar Anode Driv
176. le Mechanical Parts Manufacturers Cross Index Mfr Code Manufacturer 3109 FELLER U S CORPORATION TK0435 LEWIS SCREW CO 0 R05 TRIQUEST CORP 0 01 STAUFFER SUPPLY 07416 NELSON NAME PLATE CO 2K262 BOYD CORP 22670 6 NAMEPLATE INC 31462 QUALITY PLASTICS DIV OF MOLL PLASTICRAFTERS L P 34785 DEK INC 50434 HEWLETT PACKARD CO OPTOELECTRONICS DIV 73743 FISCHER SPECIAL MFG CO 80009 TEKTRONIX INC 80126 PACIFIC ELECTRICORD CO 85471 BOYD CORP 93907 TEXTRON INC CAMCAR DIV 760A 7600 760N Address 12 Veronica Ave Unit 4 4300 S RACINE AVE 3000 LEWIS AND CLARK HWY 810 SE SHERMAN 3191 CASITAS 6136 NE 87th AVE PO BOX 20038 2040 15TH AVE WEST 2101 CRESTVIEW DRIVE 3480 SWENSON AVE 370 W TRIMBLE RD 111 INDUSTRIAL RD 14150 SW KARL BRAUN DR PO BOX 500 747 W REDONDO BEACH PO BOX 10 13885 RAMOMA AVE 600 18TH AVE City State Zip Code Summerset 08873 CHICAGO IL 60609 3320 VANCOUVER WA 98661 2999 PORTLAND 97214 LOS ANGELES CA 90039 2410 PORTLAND OR 97220 SEATTLE WA 98119 2728 NEWBERG OR 97132 9518 ST CHARLES IL 60174 3450 SAN J OSE CA 95131 1008 COLD SPRING KY 41076 9749 BEAVERTON OR 97077 0001 GARDENA CA 90247 4203 CHINO CA 91710 ROCKFORD IL 61108 5181 10 3 Replaceable Mechanical Parts Replaceable mechanical parts list Fig amp Index Tektronix Serial No Serial No Qt Mfr Number Number Effective Discontd
177. n used to check DAC linearity and bit transition glitches The first nine addresses are one bit steps Single transitions are present until one quarter scale where three successive bits are used for position markers Since maximum glitch occurs at half scale the MSB transition is exhibited three times the only times the scale goes down The eight bits surrounding the MSB transition are displayed The upper addresses nearly mirror the lower 50 Position 4 is all zeros which is maximum DAC output and is used to adjust gain Position 5 is all ones which is minimum DAC output and is used to set offset Position 6 is a linear scale with one half LSB error on odd addresses and is used to check system linearity with linear input Position 7 is the Expanded scale with 20 dB Offset that is used in the Perfor mance Check procedure to check bar accuracy with a 20 dB 18 dB for 760N input signal The following PAL signal specification details the operation of PALs U438 U638 and U848 and may be helpful when troubleshooting the Peak Hold circuit PIN1 CLOCK from U825 approx 30 kHz PIN2 goes low when measured signal is equal to or greater than DAC ramp PIN3 EQUALS goes low when DAC ramp is equal to stored peak PIN4 TIMEOUT goes low while monostable circuit is timing the three second peak hold delay 5 PK BLK peak blank a low level prevents peak segment from being turned on This line is controlled by a bit position
178. nals fall below a minimum level The two signals are amplified rectified and filtered by U880 Q776 and C776 The level indicator is a broad term that refers to all the circuitry associated with the LED bar graph This circuitry is found on diagrams 2 and 3 and is based on the principle illustrated in Figure 6 2 6 3 Theory of Operation 6 4 GRAPH DRIVERS 2 Dynamic Response Control Left Signal Peak Processor Left Input Signal Filter amp Rectifier DAC Ramp Decoder LED Bar t Driver ROM Lookup Table Figure 6 2 Simplified Level Indicator block diagram The LED segments of a 100 segment bar are scanned from top to bottom about 300 times per second by a down counter and decoder The counter simulta neously addresses a ROM lookup table which contains the amplitudes repre sented by each segment of the bar A DAC converts this succession of amplitudes to an analog voltage ramp which is compared with the rectified and filtered input signal When the ramp voltage becomes less than the input signal the LED bar driver is enabled lighting the LED segments Hence all segments representing amplitudes less than the signal level are lit The ROM lookup table determines the shape and range of the scale In addition to the normal scale range the ROM also contains the magnified scale range actuated by the EXPAND SCALE button Other scales for calibration and troubleshooting are selected by a special
179. o signal generator to the output level shown in Table 5 2 Table 5 2 LED Bar Gain Adjustment Inst Signal Left Right Aux Level R351 352 R553 Adjust for 5 segments lit 760A 7 75 MV ims 760D 15 50 MV ms Adjust for 6 segments lit 760N 15 50 mV ms Adjust for 4 segments lit c ADJUST R351 Left Offset Adjust R352 Right Offset Adjust and 553 Aux Offset Adjust so that the correct number of LED segments are lighted as shown in Table 5 2 4 760A only Set 5340 to position 6 expands around 0 dB 0 05 dB segment resolution e Setthe audio signal generator to the output level shown in Table 5 3 Table 5 3 LED Bar Reference Adjustment Inst Signal Left Right Aux Level R347 R546 R758 760 715 MV ms 0 dB 760D 550 MV ms 9 dB arrowhead 160 777 mV ms 0 dB TEST f ADJUST R347 R546 and R758 for the LED bar reading shown in Table 5 3 For the 760D and 760N depress the EXPAND SCALE button while making this adjustment g 760A only Set 5340 to position 0 This concludes the 760A 760D 760N Calibration Procedure 5 15 Performance Check Calibration Procedures 5 16 760A 760D 760N R Theory of Operation Section 6 Theory of Operation INTRODUCTION BLOCK DIAGRAM This section 15 intended to give a thorough understanding of the 760A 760D 760N Stereo Audio Monitor s operational theory A block diagram is provided to show the relationships between ma
180. ortable display level Set the FOCUS control for the sharpest possible dot Connect the leveled audio signal generator balanced output to the LEFT AUDIO INPUT and set the equipment controls as follows 760A SELECT AUX PEAK HOLD OFF DISPLAY GAIN AUTO INPUT TERMINATION INFinite INPUT SENSITIVITY 760 7600 U 760N U Leveled Audio Signal Generator Output Sine Wave Frequency 1 kHz Output Level 760A 775 mV 7600 550 mVims 760N 777 mVrms NOTE Unless directed otherwise use these Leveled Audio Signal Generator settings for all steps of this procedure h Setthe INTENSITY control for an easily visible trace and set the TRACE ROTATION control to overlay the trace on the L graticule line 2 Check Power Supply Operation a Vary the autotransformer from low line to high line voltage 90 132 V for 110 V or 180 250 V for 220 V operation CHECK for stable instrument operation over the prescribed voltage range Performance Check Calibration Procedures 5 4 Return autotransformer to the local nominal mains voltage 3 Check Input Termination Disconnect the input from the LEFT AUDIO INPUT CHECK that the resistance across pins 2 and 3 of each rear panel XLR input is greater than 10k Set the Input Termination for each AUDIO INPUT to the 600 position see Figure 5 1 CHECK that the resistance across pins 2 and 3 of each input is 600 50
181. osition of the jumper on J192 LEFT J292 RIGHT or J664 AUXILIARY determines the input termination for that channel The Main circuit board is marked at the jumper location to indicate the termination value that each jumper position represents See Figure 3 1 The 760A CRT display can be changed from the factory set sound stage orientation where L R is vertical to a standard X Y orientation where is vertical To accomplish this change you must install the optional external 760A 760D 760N Installation graticule supplied with the instrument Detailed instructions for removing the bezel can be found under the Mechanical Assembly Disassembly topic in SECTION 4 MAINTENANCE Then move two jumpers on the Main circuit board J273 1373 to the position labeled X Y pins 2 amp 3 in Figure 3 1 Also for X Y display orientation rotate 886 on back of Main board so pins 1 and 2 of the connector mate with pins 2 and 1 of J886 connect back ward Repeat with 862 1862 Remember to return P886 P862 to their normal 1 to pin 1 positions for Sound Stage display orientation This provides correct phasing for both display orientations lt 185 LEFT INPU 4192 OdB DISPLAY ORIENTATION 71 rm uses RIGHT INPU El uE E J392 1 N 0 dB X Y 4 n one T be aS El PHH 1500 7 J373 12 dB J L
182. otection and to avoid damage to the instrument unplug the instrument power cord before removing or replacing any circuit boards connectors or jumpers The 760A 760D 760N Stereo Audio Monitor operate over a frequency range of 48 to 66 Hz at any mains voltage between 90 VAC and 250 VAC These newer versions of the 760 Series instruments do not require any internal changes to select their operating voltage range The 760A is factory set so that a specific level applied to each input will indicate a specific level on the bar graph scale see Table 3 1 While this required input level may be changed for the standard 760A the 760D and 760N are constrained to use only the factory set levels Table 3 1 Factory Set Input Sensitivity Instrument Type Input Level Bar Graph Readout TOR 78 1600 0 dB 160 6 dB 3 1 Installation User Definable Input Sensitivity Standard 760A only Changing Input Termination Changing Display Orientation To enable the 760A bar graph to indicate 0 dB with an input of 0 4 8 12 or 16 dBm move the jumpers on J185 LEFT J385 RIGHT and J657 AUX ILIARY to the desired sensitivity which is marked on the Main circuit board Assembly A3 at each jumper location Figure 3 3 shows all jumper locations on the Main board and what each jumper position represents NOTE The specified level is that of a sine wave which reads 0 dB peak program level not the line up level
183. oward the rear panel until the potentiometer shafts clear the front and then lift it out 6 To replace the Main board lay the board flat and slide it back into place there are grooves in the front molding for the board to slide into Perform steps 1 through 4 above in reverse order Remove the plug from J4 on the Power Supply board the connection to the Main board 2 Remove the anode connection from the CRT and discharge it to ground WARNING The CRT may retain a dangerous charge Ground the conductor of the anode to discharge the CRT Do not allow the conductor to touch your body or any circuitry 3 Remove the plugs from J1 and J3 the CRT wires Remove the plug from J2 the power switch 4 Remove the two screws from the rear panel that hold the AC line filter in place 5 Using a 1 Pozidrive tip disconnect the power ON OFF switch from the Front Panel assembly 6 Remove the seven screws that are holding the board down See Figure 4 4 4 17 Maintenance 7 Remove the board by sliding it forward and lifting it up 8 Toreplace the board reverse this procedure REPACKAGING If the instrument is to be shipped to a Tektronix Service Center for service or repair attach a tag to the instrument showing 1 Owner with complete address and the name of the person at your firm that can be contacted 2 Instrument serial number and a description of the service required Repackage the instrument in the
184. play High Voltage Oscillator Check CRT Voltage Check Focus Amplifier Check Unsolder and lift one end of R24 Turn on the power supply Using the digital multimeter measure the voltage between and the collector of Q1 It should be approximately 140 V Turn off the power supply Reconnect the lifted end of R24 Z Axis Amplifier Check Unsolder and lift one end of R8 Turn on the power supply Using the digital multimeter measure the voltage between TP1 and the collector of Q4 It should be approximately 10 V Short together the base and emitter of Q5 The collector of Q4 should be approximately 100 V Turn off the power supply Reconnect the lifted end of R8 Grid Drive Check 760A 760D 760N Turn off the power supply Use the digital multimeter s diode check to test CRI CR2 CR3 CR5 and CR6 for shorts Turn on the power supply 4 11 Maintenance 4 12 m Using the digital multimeter measure voltage between and the cathode CR5 It should vary between approximately 75 and 200 V as R58 CRT Bias is adjusted m Connect the oscilloscope probe to the anode CR5 and the probe ground to TP1 The signal should be a clipped sine wave of 75 to 200 Vp p High Voltage Oscillator Check m Connect oscilloscope probe to 3 06 collector and the probe ground to TP1 Turn on the power supply The signal should be a 60 Vp p 22 kHz sine wave m Check th
185. ration instead of turning the generator on and off 10 Adjust Vertical Horizontal Gain Balance a c Connect the leveled audio signal generator output to both the RIGHT and LEFT AUDIO INPUTs Check that the trace is directly under the R graticule line Connect the X1 probes from the oscilloscope differential inputs to TP885 and TP866 ADJUST R580 for minimum differential signal approximately 5 mV 11 Adjust Horizontal and Vertical Gains a Connect the leveled audio signal generator output to both the RIGHT and LEFT AUDIO INPUTs Ensure the DISPLAY GAIN control is set to AUTO ADJUST R786 Vertical Gain Adj and R759 Horiz Gain Adj so the trace remains directly under the R graticule line 45 and ends at the center amplitude mark 12 Adjust CAL Gain Set the front panel DISPLAY GAIN control to CAL ADJUST R262 Cal on to extend the trace to the end of the R graticule line Set the audio signal generator frequency to 20 kHz ADJUST R789 Channel Match on to close the sides of the ellipse to a single line no trace separation 760A 7600 760N Performance Check Calibration Procedures 760A 760D 760N e Setthe audio signal generator frequency to 20 Hz f CHECK that the display shows no separation of the trace 13 Adjust LED Bar Gains a Connect the leveled audio signal generator output to all three AUDIO INPUTs b Set the leveled audi
186. re internally arranged 10 by 10 matrix they are addressed by two BCD to decimal decoders one driving the anodes and one driving the cathodes U308 drives the anodes through buffers U208 and U223A The cathode decoder driver 17320 is located on the front panel board diagram 8 Gate U708 provides a way to turn the bar on and off by forcing the decoder into a non BCD state when the BAR ENABLE line is high This forces all the decoder outputs high and the LED anodes low The PEAK HOLD front panel switch is debounced by an RC network and Schmitt gate U825A amp B which toggles flip flop U823 for on off control 6 5 Theory of Operation SCANNER DRIVER amp DAC lt 3 gt Master Clock Down Counter Scale Shaper Lookup Table DAC LOW VOLTAGE POWER SUPPLY lt 6 gt 6 6 U818 provides approximately 30 kHz clocking for the counter Its output is a square wave whose rising edge defines clock phase 1 An inverter U825 provides clock phase 2 whose rising edge is delayed from phase 1 by one half the clock period U828 0623 form a two digit BCD down counter The counter output is delayed half a clock period by latch U424 which in turn drives the bar decoders Monostable circuit U715 provides intersegment blanking by disabling the latch outputs for a few microseconds after each clock pulse ROMs 0127 and 0137 form the look up table which determines the shape and range of the scale Twelve data bits provide
187. rt Number 104 01 02 104 01 02 104 01 02 104 01 02 104 01 02 104 01 02 104 01 02 104 01 02 104 01 02 160423201 160613400 160613600 2 641605 3 SN74LS377N 160423301 160613500 160613700 2 641605 3 SN74LS377N DAC80P CBI V SN74LS138N SN74LS08N DG201AC C30248 06 201 30248 MC34084P UDN2585A 8 29 Replaceable Electrical Parts Replaceable Electrical Parts List Cont Component Tektronix Serial Serial No Number Part Number Name amp Description A3U213 156 2818 00 IC LINEAR TTL DRVR 8 CHAN SCE DRVR LOW VOUT SAT A3U217 156 2818 00 IC LINEAR TTL DRVR 8 CHAN SCE DRVR LOW VOUT SAT A3U223 156 2818 00 IC LINEAR TTL DRVR 8 CHAN SCE DRVR LOW VOUT SAT A3U 308 156 0736 02 IC DIGITAL LSTTL DEMUX DECODER A3U313 156 0736 02 IC DIGITAL LSTTL DEMUX DECODER A3U317 156 0736 02 IC DIGITAL LSTTL DEMUX DECODER A3U357 156 1451 00 IC LINEAR BIP OLAR VR NEGATIVE USTABLE 1 5A 4 A3U361 156 1126 00 IC LINEAR BIPOLAR COMPARATOR OPEN COLL 200NS A3U368 156 1149 00 LINEAR BIFET OP AMP A3U379 156 2817 00 IC LINEAR BIFET OP AMP QUAD A3U424 156 0982 02 IC DIGITAL LSTTL FLIP FLOP A3U428 156 0865 00 IC DIGITAL LSTTL FLIP FLOP OCTAL D TYPE CLEAR A3U432 156 2336 00 IC DIGITAL LSTTL COMPARATOR 8 BIT MAGNITUDE A3U436 156 1600 00 IC DIGITAL LSTTL MISC DUAL RETRIG MNSTBMV A3U438 160 4234 00 DIGITAL STTL PLD PAL 16R 6 28 5MHZ 180MA MOUNTI
188. s 760A 760D 760N 760 When a ppm such as the 760A is used in conjunction with vu meters it is important to consider the difference in dynamic characteristics when aligning system levels The vu meter is an average reading meter with a relatively long integration time Its slow response causes it to indicate between 6 and 15 dB below actual audio peaks depending on program content The ppm is quasi peak meter with a short but not instantaneous attack time and very slow decay It reads much closer to actual audio peaks within 3 to 6 dB So when lining up a system with a test tone the ppm must read lower than the vu meter to make them read the same on program audio Broadcast authorities have found that 8 dB is a good average difference between peak to reading ratio of the ppm and vu meter Hence they have specified that a line up tone reading of 0 vu on the vu meter should read 8 dB on the ppm With this alignment both meters will read substantially the same with audio program material with the ppm giving more reliable control of program peak levels The input sensitivity of the 760A is set using internal jumpers See SECTION 3 INSTALLATION for details 7600 The Alignment Signal Level should indicate 9 dB on either the normal white or the expanded blue scale The two scales coincide at the 9 dB arrowhead marks Very accurate level settings can be achieved using the blue expanded scale activated by pressing and holding the
189. s in the Replaceable Mechanical Parts list section The component number is obtained by adding the assembly number prefix to the circuit number see Component Number illustration following this table The electrical parts listis arranged by assemblies in numerical sequence A1 with its subassem blies and parts precedes A2 with its subassemblies and parts Chassis mounted parts have no assembly number prefix and they are located at the end of the electrical parts list 2 Tektronix part number Use this part number when ordering replacement parts from Tektronix 3and4 Serial number Column three indicates the serial number at which the part was first effective Column four indicates the serial number at which the part was discontinued No entry indicates the partis good for all serial numbers 5 Name amp description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification 6 Mfr code This indicates the code number of the actual manufacturer of the part 7 Mfr part number This indicates the actual manufacturer s or vendor s part number Abbreviations Abbreviations conform to American National Standard ANSI 1 1 1972 Component Number Component Number A23A2R1234 7 A23 A2 R1234 N Assembly number Subassembly Number Circuit Number optional Read Resistor
190. s shown on the diagrams are in the following units unless noted otherwise Capacitors Values one or greater are in picofarads pF Values less than one in microfarads uF Resistors Ohms Q 9 1 Diagrams Circuit Board Illustrations The following information and special symbols may appear in this manual Assembly Numbers Each assembly in the instrument is assigned an assembly number e g 20 The assembly number appears on the diagram in circuit board outline circuit board illustration title and lookup table for the schematic diagram The Replaceable Electrical Parts List is arranged by assembly number in numerical sequence the components are listed by component number Example Component Number Chassis mounted components have no Assembly No prefix See end of Replaceable Electrical Parts List A23 A2 R1234 Assembly Subassembly Number Number if used Schematic Circuit Number Grid Coordinates The schematic diagram and circuit board component location illustration have grids A lookup table with the grid coordinates is provided for ease of locating the component Only the components illustrated on the facing diagram are listed in the lookup table When more than one schematic diagram is used to illustrate the circuitry on a circuit board the circuit board illustration will only appear opposite the first diagram the lookup table will list the diagram number of other diagrams that the ot
191. seated transistors and integrated circuits The remedy for most visible defects is obvious however if heat damaged parts are discovered try to determine the cause of overheating before the damaged part is replaced otherwise the damage may be repeated CAUTION Static discharge can damage any semiconductor component in this instrument This instrument contains electrical components that are susceptible to damage from static discharge Static voltages of 1 to 30 kV are common in unpro tected environments The instrument performance should be checked after each 2000 hours of operation or every 12 months if the instrument is used intermittently to ensure maximum performance and assist in locating defects that may not be apparent during regular operation Instructions for conducting a performance check and an adjustment procedure are provided in SECTION 5 PERFORMANCE CHECK AND CALIBRATION CORRECTIVE MAINTENANCE How To Use This Manual 4 2 NOTE No repair should be attempted during the warranty period Foldout Pages Figure 4 1 illustrates the foldout pages at the back of the manual which contain useful information for troubleshooting this instrument Block and schematic diagrams circuit board illustrations and parts locating charts are located on the foldout pages 760A 760D 760N Maintenance CIRCUIT PARTS LOCATING ILLUSTRATIONS CHART SCHEMATIC TUT
192. service switch S340 Refer to SECTION 4 MAINTENANCE for information on the settings and uses of S340 The signal from the Input Amplifier is full wave rectified in precision rectifier U445A amp B isolated by 0445 amp D filtered with PPM time constants and buffered by U453 The attack time constant is such that a 10 ms sine wave burst will indicate 1 dB below true peak value The fall time is 1 8 seconds for a 20 dB indicator drop R347 R546 and R758 provide calibration adjustments for the LEFT RIGHT and AUX indicators respectively Comparator U635B compares the rectified signal with the DAC ramp and provides the bar enabling signal This signal is passed through logic contained in a PAL U438 which is part of the Peak Hold circuit description that follows 760A 760D 760N Theory of Operation Bar Anode Driver Left Peak Hold 760A 760D 760N Peak Hold Circuit The Peak Hold circuit 1 entirely digital It stores peak values as follows On each scan of the bar 300 times per second the Comparator described above provides a CMP signal to PAL U438 The PAL then asserts BAR ENABLE which allows the Bar Anode Driver to operate The PAL also asserts DELAY to clock the counter state corresponding to the signal level into the latch U428 On succeeding bar scans digital comparator U432 compares the latched number at its Q inputs with the counter state corresponding to the new signal level at its P inputs
193. shing the surface with a soft cloth or small brush The brush will remove dust from around the selector buttons and connectors Hardened dirt may be removed with a cloth dampened in water that contains a mild detergent Abrasive cleaners should not be used CRT Clean the light filter graticule and CRT face plate with a soft lint free cloth dampened in denatured alcohol Interior Clean the interior by loosening the accumulated dust with a dry soft brush then remove the loosened dirt with low pressure air to blow the dust clear high velocity air can damage some parts Hardened dirt or grease may be removed with a cotton tipped applicator dampened with a solution of mild detergent in water Abrasive cleaners should not be used If the circuit board assemblies need cleaning remove the circuit board by referring to the instruc tions under Corrective Maintenance in this section After cleaning allow the interior to thoroughly dry before applying power to the instrument Maintenance A Visual Inspection Static Sensitive Components AN Performance Checks and Readjustments CAUTION Do not allow water to get inside any enclosed assembly or component Do not clean any plastic materials with organic cleaning solvents such as benzene toluene xylene acetone or similar compounds because they may damage the plastic After cleaning carefully check the instrument for defective connections damaged parts and improperly
194. shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is properly grounded Do Not Operate Without Covers Do not operate this product with covers or panels removed Use Proper Fuse Use only the fuse type and rating specified for this product Avoid Exposed Circuitry Do not touch exposed connections and components when power is present Do Not Operate With Suspected Failures If you suspect there is damage to this product have it inspected by qualified service personnel Do Not Operate in Wet Damp Conditions Do Not Operate in an Explosive Atmosphere Keep Product Surfaces Clean and Dry Provide Proper Ventilation Refer to the manual s installation instructions for details on installing the product so it has proper ventilation Terms in this Manual These terms may appear in this manual WARNING Warning statements identify conditions or practices that could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property Terms on the Product These terms may appear on the product vii General Safety Summary indicates injury hazard immediately accessible as you read the marking WARNING indicates an injury hazard not immediately accessible as you read the marking CAUTION indicates
195. t signal Z Axis dimming prolongs CRT life Bar Graph Three 100 segment LED bars indicate the levels of the left stereo channel right stereo channel and a selectable third channel The third bar can be set to display the levels of L R 2 LR 2 or the rear panel AUXILIARY input Both L R 2 and LR 2 are internally derived and represent half the sum or difference of the input voltages VLVR 2 In this way when the left and right channels are balanced the sum will be displayed at that same level while the difference will be displayed at 0 The EXPAND SCALE control is a momentary contact front panel push button which greatly improves the accuracy of level setups Pressing this button switches to the blue expanded scale which allows accurate setting of the signal level for alignment as specified by broadcast authorities For the 760A the alignment level is 8 dB This level is labeled TEST and is indicated by the arrow head scale marks For 7600 the alignment level is 9 dB indicated by the arrow head scale marks The 760N alignment level is marked TEST is at 0 dB In all cases the normal scale lines up with the expanded scale at the alignment level The PEAK HOLD control is a latching front panel push button Indicated peaks are displayed for approximately three seconds when this function is selected Dynamic response 760A 760D and 760N conform to the dynamic response characteristics of
196. t the audio engineer can use to perform setup monitoring measuring and troubleshooting tasks in the studio There are two special versions of the 760A Stereo Audio Monitor 7600 and 760N three operate in exactly the same manner but are set to use different scales for the Bar Graph displays The three different scales are shown in Figure 1 1 Features CRT Display The CRT provides a pattern display to monitor stereo separation monaural phase compatibility and audio system phase errors Tektronix 760A ior Tektronix 7600 Tektronix 760 sane LEFT RIGHT SELECT LEFT RIGHT SELECT LEFT RIGHT SELECT dB d Ir l 1 I I Figure 1 1 LED Bar Graph scales for the 760A 760D and 760N 760A 760D 760N 1 1 Introduction Specifications The display is set for a Sound Stage orientation when the 760A is shipped from the factory This provides a display where monaural amplitudes are oriented on the vertical axis of the CRT An alternate XY graticule is shipped as a standard accessory with the 760A This graticule can be installed if you are familiar with or desire the display orientation provided by an XY monitor Instructions for installing the XY graticule are found in SECTION 3 INSTALLATION Automatic or manual gain control is front panel selectable This feature allows flexible control of the pattern size over a wide range of input signal amplitudes In the absence of an inpu
197. tance Introduction The Troubleshooting Procedure for the Power Supply Assembly A1 is split into two sections the Low Volts and High Volts Supplies Start the procedure by determining which section of the power supply the problem is in Apply AC power and turn on the power supply From Table 4 1 determine which symptom the power supply exhibits and refer to the corresponding procedure 760A 760D 760N 4 7 Maintenance 4 8 Low Volts Supply Table 4 1 Power Supply Fault Symptoms Symptom Procedure Line fuse open Rectifier S witcher Check Low Volts Power supply cycles OFF ON Output Check Low Volts or High Voltage Oscillator Check High Volts Does not power up Control Circuit Check Low Volts 5 V not regulating Error Amplifier Check Low Volts Improper CRT display High Volts Supply NOTE A 200 2 watt resistor should be used as a load for the Low Volts Supply Disconnect J4 and connect the 200 resistor between W1 5 secondary ground 1 Preliminary Checks a A properly functioning and loaded Low Volts supply will output the voltages listed in Table 4 2 Use the DMM to measure the voltages between and the voltage test points If the supply is not regulating properly continue with the procedure Table 4 2 Low Volts Supply Voltages Test Point Voltage W1 45 V 4 88 to 45 12 V W4 15 V 14 0 to 416 0 V W3 15 14 0 to 16 0 V W2 40 V 39 0 to 441 0
198. ue The LED bars are green up to 6 dB and red above that point 1 55 V rms sinusoidal input 6 dBu produces a reading of 6 dB and there is a TEST mark to indicate the 0 dB test level This test level corresponds to an input level of 0 775 V rms 0 dBu Using The 760A 760D 760N 2 6 Initial Alignment Once the 760A 760D 760N has been properly configured for your application and installed performing the following initial alignment procedure is necessary prior to any other measurements All 760A 760D 760N front panel control names are upper case NOTE All waveform photographs in this section were taken using the Sound Stage graticule Remember that your display will be shifted 45 clockwise from the figures in this section if you are using the XY graticule 2 Connect power to the 760A 760D 760N and set the instrument POWER to ON 3 With no input to the LEFT or RIGHT AUDIO INPUTS set the front panel INTENSITY control fully clockwise 4 Setthe VERTICAL and HORIZONTAL POSITION controls so the illuminated dot is centered on the graticule 5 Connect sine wave signal between 20 Hz and 15kHz to the LEFT AUDIO INPUT and set the INTENSITY control to your preference 6 Setthe FOCUS control for the sharpest trace possible 7 Setthe TRACE ROTATION control to overlay the trace on the L graticule line 760A 760D 760N Operating Instructions Level Setups System Phase Error Measurement
199. uipment for Measurement Control and Laboratory Use IEC1010 1 Safety Requirements for Electrical for Measurement Control and Laboratory Use 45 to 40 C 2000 meters Testand measuring Class as defined in 1010 1 Annex H grounded product Overvoltage Category Il as defined IEC 1010 1 Annex Pollution Degree 2 as defined in IEC 1010 1 Note rated for indoor use only Introduction Specifications 1 8 760 760D 760 sO Operating Instructions Section 2 Operating Instructions Introduction Front Panel Controls 760A 760D 760N This section of the manual will familiarize you with the 760A Stereo Audio Monitor s operation The contents include brief description of the controls connectors displays including a discussion of graticules and the basic uses of the instrument Table 2 1 contains a brief description of the front panel control functions front panel is shown in Figure 2 1 Table 2 1 Front Panel Controls Control Select Expand Scale Peak Hold Display Gain Power Focus Graticule Position Vert amp Horiz Intensity Trace Rot Function Rotary switch selects input to third bar from SUM DIFF and AUX Momentary push button increases sensitivity for precise level set ups While holding this button refer to the scale printed in blue Latching push button ON when back lit Double detent pot CW detentis AGC CCW detentis
200. wan lea 4 1 Introduction ayy 4 1 Preventive Maintenance 4 1 Cleaning ee So his Ae es Ae md 4 1 Visual Inspection e AXI as CUSCO ACER 4 2 Static Sensitive Components 4 2 Performance Checks and Readjustments 4 2 Corrective Maintenance eese ELE E 4 2 How To Use This 4 2 Obtaining Replacement Parts 4 5 Troubleshooting Information 4 5 eee Se SPESE ER OP CES CE e dus 4 5 PAL Signal Specification 4 6 Power Supply Troubleshooting 4 7 Introduction u o RUN AVR 4 7 Low Volts Supply 4 8 Ehgh VoltsSupply DEP SEE 4 10 Mechanical Disassembly And 4 13 Bezel Removal usn te Ec d eec epe P EE 4 13 Graticule Light Removal and Replacement 4 14 Removal situe etur pec esas 4 14 CRE Replacement wo btn SDS 4 14 Rear Panel Removal and Replacement 4 15 Front Pane

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