monitors :: 08147-400-110 CEA455 EGA Color Monitor Service
Contents
1. KSA 2222 741586 V HOLD 145V 85V FOCUS HV ABL L403 L402 3 8vP P V 2501879 7SVP P H 2501555 2601556 0 7 H H 0406 V8066 C422 RI 0401 20401 190v 54234 AN4148 208 2 100v UT Y Y EGA TuS 48 49 SEMICONDUCTOR LEAD IDENTIFICATION PARTS DESCRIPTION REF NO PARTS DESCRIPTION REF NO KSC2310 MPSA42 KSC1507 KSB546 Y KSA614 Y 2501555 2501879 2501556 STR53041 STR54041 KSC945 KSC1008 KSA733 Q601 Q604 Q602 x MC7812C IC602 x 4 46 14053 IC402 51205 1101 x Q109 Q111 Q113 Q401 Q603 Q303 5 7407 74HCTLS86N Q103 Q104 Q105 Q110 Q112 Q114 Q302 0403 0405 0606 Q101 Q102 Q404 Q106 50 51 PRINTED CODE 08147 400 1102. RADIATION PRECAUTION TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT WARNING TURE DES PIECES POUR TROUVER LES PIECES DE RECHANGE EXACTES R CEMENT WIRE MPP C METAL POLYPROPYLENE OR SPECIFIED IN THE PART LIST BEFORE REPLACING THIS EQUIPMENT CONTAINS SAFETY CRITICAL COMPONENTS R WIRE WOUND C TANTALUIM SAFETY PRECAUTION PRODUCTION ANY OF THESE COMPONENTS READ CAREFULLY THE PRO ALL PARTS SHOWN IN THE SHADED AREAS OF THE SCHEMATIC NOTES 4 RESISTANCE IS SHOWN IN Kei 000 000 000 COLD GROUND HOT GROUND CHASSIS NO T W G SAFETY NOTICE DUCT SAFETY NOTICE ARE SAFETY REPLACE SAFETY CRITICAL COMPONENTS ONLY RATED POWER OF RESISTOR NOT NOTED IN SCHEMATIC DIAGRAM en u WITH MANUFACTURERS RECOMMANDED PARTS LIST FOR EXACT IS 1 4W 4 THE SECONDARY VOLTAGE IS READ WITH VTVM FROMINDICATED POINT TO COLD GROUND 2 DURING A NUMEROUS MEASUREMENT OF THIS RECEIVER REPLACEMENTS 2 IS SHOWN UF AND NOT NOTED CAPACITANCES THE PRIMARY VOLTAGE IS READ WITH VTVM FROM INDICATED POINT TO HOT GROUND MATTERS THAT DEMAND SPECIAL ATTENTION IS FOLLOWING IS SHOWN 4 3 000 000 AVETISSMENT RATED VOLTAGE OF CAPACITOR NOT NOTED IN SCHEMATIC pya 5 THIS SCHEMATIC DIAGRAM IS SUBJECTED TO CHANGE WITHOUT NOTICE FOR FURTHER IMPROVEMENT RECEPTEUR EST EQUIPE DE COMPOSANTS CAITIQUES GRAM IS SOV 68 CRT NO 8446 8
3. gt 0 24V 1 SMPS TRANS SNC 12V 1601 PDC 6 3V MA IN BOARD M9014 INVHOVIG DISASSEMBLY INSTRUCTION 1 Remove the 6 screws 1 retaining the rear cabinet 2 1 Remove the CRT s anode cap 2 from the CRT 2 Remove the CRT PCB after disconnecting the ground connector 3 Disconnect all of the connectors from the PCBs 4 Remove the main PCB and LED PCB from the front cabinet NOTE Refer to the EXPLODED VIEW for a more detailed disassembly procedure rd ha ALIGNMENT INSTRUCTIONS 5 LOCATION AND CONTROL FUNCTION 120 O13 514 BACK CONTROL VR306 V SIZE MODE 2 7 L402 H WIDTH COIL VR302 V HOLD MODE1 MODE2 n L403 H LINEARITY COIL VR303 H POSI MODE 2 1 1 1 ALIGNMENT PROCEDURE UNIT FACING EAST Power supplv voltage is 120 60Hz 220 240 50Hz POWER SUPPLV OUTPUT VOLTAGE FBT Connect a DVM to the anode of D615 GT pin is standing and adjust the voltage to 54V using VR601 CONDITION 1 NO SIGNAL 2 CONTRAST BRIGHTNESS is MINIMUM 0 MAIN ADJUSTMENT Unless special comment adjust the EXT VR at the mechanical center point 2 1 H RASTER CENTERING Turn the SCREEN VR so that background raster can be seen and control the H CEN TER S W SW401 so that the background raster is on the center of CRT This must be done in EGA MODE MODE 2 21
4. SOCKET CRT H FOCUS l CSH 6112 V O WHT SWITCH SLIDE KSA2222 SEE TABLE 1 ON THE PAGE PART 01201 102 022 01241 108 002 01241 108 010 01241 108 018 02849 032 410 02779 111 510 02859 129 110 02429 202 060 02429 202 060 02429 202 060 02429 060 510 02429 060 310 02429 855 210 02449 435 410 02449 734 210 02429 060 510 02429 060 510 02429 052 020 02479 014 110 03549 015 010 03549 007 010 04724 102 810 03354 705 310 03519 106 210 REMARK CONTRAST VR ION BACK CONTROL PCB H D T S P C T F B T H WIDTH COIL H LINEARITY DEGAUSSING SVC S W H CENTER S W CRT SOCKET DESCRIPTION gt FB101 FB102 FB103 FB104 FB105 FB106 FB107 FB108 FB109 FB110 FB111 FB112 FB113 FB114 FB115 FB116 CN101 CN101 CN103 CN103 CN107 HEATER CN301 CN301 CN305 CN305 402 402 105 105 CN603 LED COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 20 COIL CHOKE 1 5uH 2096 COIL CHOKE 1 5UH 2096 20 COIL CHOKE 1 5uH 2096 20 COIL CHOKE 1 5UH 2096 COIL CHOKE 1 5uH 20 CONNECTOR WAFER 5267 09A MOLEX SIGNAL CABLE ASSY L1000 CEA4551 CONNECTOR
5. VR SEMI CET 117A B200 VR SEMI CET 117A B200 VR SEMI CET 117A B25K VR SEMI CET 117A B25K VR SEM CET 117A B25K VR ROUND SGL 18SN 20F B10K 40 01201 102 005 02139 301 240 02139 301 347 02139 301 240 02139 301 347 02139 302 747 02139 103 570 02139 301 240 02149 401 780 02159 401 550 02159 401 560 02139 302 747 02139 302 747 02139 302 247 02139 204 030 02149 201 470 02139 302 247 02139 302 747 01241 108 002 01241 108 005 01241 108 007 01241 110 001 01241 110 005 01241 110 012 01241 110 003 01241 118 004 01241 118 004 01241 110 007 01241 110 007 01241 110 007 DESCRIPTION PART NO REMARK MULTI 2 MULTI 1 BRIGHT VR REF DESCRIPTION SW301 SWA401 SW601 RL401 SOCKET TEXT S W F601 VR ROUND SGL 18SN 20F B5K VR SEMI CET 92A B500 VR SEMI CET 92A B250K VR SEMI CET 92A B10K TRANS amp COIL TRANS HOR DRIVE 19x7 6MM TRANS SIDE PIN 28 20 TRANS FLYBACK FCO 1412L02 SEE TABLE 1 ON THE PAGE COIL FILTER 15uH K COIL FILTER 15uH K COIL FILTER 15uH K COIL FILTER 33uH COIL CHOKE 1MH COIL PEAKING 2 7uH COIL WIDTH 32uH 40 4551 COIL H LINEARITY 45uH SEE TABLE 1 ON THE PAGE SEE TABLE 1 ON THE PAGE COIL FILTER 33uH COIL FILTER 33uH COIL CHOKE 100uH K 10 N Y COIL DEGAUSSING CN4551A 120V 60Hz OTHERS SWITCH LEVER EVQ R1A L13 SWITCH LEVER JRS 1301 SEE TTABLE 1 ON THE PAGE RELAV HR CR323 DCO24
6. 12 4 T LED KLG208E INTEGRATED CIRCUITS IC GATE SL205 IC KS74HCTLS86 IC TTL SN74LS07 IC LA7830 IC LA7851 IC CMOS 14053B MOTOROLA SEE TABLE 1 ON THE PAGE IC REGULATOR MC7812C SST TRANSISTOR KSC1008 T TRANSISTOR KSC1008 T TRANSISTOR 2N3904 T TRANSISTOR 2N3904 T TRANSISTOR 2N3904 T TRANSISTOR KSA733 V T TRANSISTOR KSC1507 V TRANSISTOR 2N3904 T 39 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 404 767 02169 403 830 02169 404 690 02169 404 767 02169 404 677 02309 110 090 02109 301 540 02109 104 700 02109 101 880 02119 101 490 02119 101 080 02109 104 120 02119 601 700 TRANSISTORS 02149 301 437 02149 301 437 02139 301 347 02139 301 347 02139 301 347 02139 103 384 02139 301 240 02139 301 347 TRANSISTOR KSC1507 Y TRANSISTOR 2N3904 T TRANSISTOR KSC1507 Y TRANSISTOR 2N3904 T TRANSISTOR KSC945 V T TRANSISTOR KSA614 Y TRANSISTOR KSC1507 Y TRANSISTOR 2SD1879 SANYO TRANSISTOR 2SD1555 TOSHIBA TRANSISTOR 2SD1556 TOSHIBA TRANSISTOR KSC945 Y T TRANSISTOR KSC945 Y T TRANSISTOR KSC2310 T TRANSISTOR KSC2383 T TRANSISTOR MPSA42 TRANSISTOR KSB546 Y SST TRANSISTOR KSC2310 T TRANSISTOR KSC945 Y T VARIABLE RESISTORS VR SEMI CET 92A B500 VR SEMI CET 92A B3K VR SEMI CET 92A B10K VR SEMI CET 117A B500 VR SEMI CET 117A B50K VR SEMI CET 117A B3K VR SEMI CET 117A B5K
7. 270 J C POLYESTER CQ921M T 100V 0 0068 J C ELECTROLYTIC CEO4W T 50V 1M C POLVESTER CQ921M T 100V 0 01 J C ELECTROLYTIC CEO4W T 50V 1M C POLYESTER 100V 682K TDX SEE TABLE 1 ON THE PAGE C ELECTROLYTIC CEO4W T 16V 47M 44 01416 468 472 01407 017 271 01417 344 104 01608 905 472 01417 344 104 01416 468 472 01419 901 100 01504 723 122 01505 723 104 01502 323 682 01505 723 223 01609 403 050 01609 401 720 01628 375 684 01609 402 100 01608 904 101 01607 905 220 01505 723 104 01417 468 561 01417 468 101 01505 723 473 01417 318 102 01417 318 102 01407 017 101 01502 512 222 01407 017 271 01505 723 682 01608 906 109 01505 723 103 01608 906 109 01505 524 682 01608 903 470 DESCRIPTION PART NO REMARK C CERAMIC HK CK45 T B 50V 1000 K 01417 318 102 C CERAMIC HK CK45 T B 500V 560 K 01417 468 561 C CERAMIC HK CK45B 500V 0 01M K 01419 106 250 C M POLYPROPYLENE CF922M 1 6KV 0 0068UF J 01518 373 682 C POLYPROPYLENE CQ922M 400V 0 018UF J 01502 543 183 C CERAMIC HK CK45B 2KV 1000 K 01416 768 102 C M POLYPROPYLENE CF922M 200 0 39UF K 01518 334 394 C M POLYPROPYLENE CF922M 200V 0 68UF K 01518 334 684 C M POLYPROPYLENE CF922M 200V 0 39UF K 01518 334 394 01603 908 220 01603 908 220 01502 534 223 01603 915 470 01417 468 101 01608 902 470 01505 723 104 01505 723 222 01609 401 482 C ELECTROLYTIC CE04W 100 22 C ELECTROLYTIC CE04W
8. 8KHz 2 2 H HOLD ADJUSTMENT a Disconnect the signal cable b Connect the frequency counter at the H DY WIRE RED wire and adjust the frequency in range of 15 700KHz 50Hz using CGA EGA H HOLD VR VR405 Frequency of EGA MODE 2 21 8KHz is ad justed automatically 2 3 V HOLD ADJUSTMENT a Disconnect the signal cable b Connect the frequency counter at R304 side of IC301 and adjust the frequency in the range of 56Hz 1 2 using V HOLD VR VR306 f the vertical frequency from PC is 50Hz adjust the vertical frequency at 46Hz 1Hz 2 4 H LINEARITY ADJUSTMENT a Connect the signal cable b Adjust L403 to the optimum linearity in MODE 1 and MODE 2 linearity pattern gt ou 2 5 H POSITION a Adjust H CENTER VR VR407 to the center of the picture when the signal of MODE 2 is applied b Change mode to CGA MODE MODE 1 15 75KHz and adjust H CENTER VR using CGA H POSI VR VR403 SIDE PINCUSHION Adjust the side pincushion to the optimum side pincushion using VR305 2 6 H WIDTH Adjust the H WIDTH using width coil L402 so that H WIDTH is adjusted in the range 250 4 2MM in MODE 2 b Check the H WIDTH of MODE 1 H WIDTH of MODE 1 is adjusted in the range 250 4MM automatically 2 7 a V POSITION Adjust the center of vertical using V POSI VR VR306 The V POSI VR VR306 can control vertical center of MODE 1 MODE 2 together 2 8 2 9 V SIZE a Adjust V S
9. NO REMARK R135 R METAL ILM RM 1 8T 1K J 01048 177 102 R136 R METAL FILM RM 1 8T 1 2K J 01048 177 122 R137 R METAL FILM RM 1 8T 1 2K J 01048 177 122 R139 R METAL FILM RM 1 8T 100 J 01048 177 101 8140 R METAL FILM RM 1 8 1 2K J 01048 177 122 R141 R METAL FILM RM 1 8T 470 J 01048 177 471 R142 R METAL FILM RM 1 8 1 2K J 01048 177 122 R143 R METAL FILM RM 1 8T 560 J 01048 177 561 R144 R METAL FILM RM 1 8 1 2K J 01048 177 122 R145 R METAL FILM RM 1 8T 470 J 01048 177 471 R146 R METAL FILM RM 1 8T 2 2K J 01048 177 222 R147 R METAL FILM RM 1 8T 3 9K J 01048 177 392 R148 R METAL FILM RM 1 8T 2 2K J 01048 177 222 R150 R METAL FILM RM 1 8 1K J 01048 177 102 R151 R METAL OXIDE RS 2P 56 J S 01085 527 560 R155 R METAL FILM RM 1 8 3 3K J 01048 177 332 R156 R METAL FILM RM 1 8T 2 7K J 01048 177 272 161 R CARBON RD 1 4 120 J 01018 277 121 R164 R CEMENT WIRE RW 3P 1 8K J 01039 427 182 R165 R CARBON RD 1 4 22K J 01018 277 223 R166 R CARBON RD 1 4 270K J 01018 277 274 R167 R COMPOSITION RC 1 2T 330 K 01028 378 331 R169 R CARBON RD 1 4T 120 J 01018 277 121 8172 WIRE RW 1 8K J 01039 427 182 R173 R CARBON RD 1 4 22K J 01018 277 223 R174 R CARBON RD 1 4T 270K J 01018 277 274 R175 R COMPOSITION RC 1 2T 330 K 01028 378 331 R177 R CARBON RD 1 4T 120 J 01018 277 121 R180 R CEMENT WIRE RW 1 8K J 01039 427 182 R181 R CARBON RD 1 4T 22K J 01018 277 223 R182 R CARBON RD 1 4T 270K
10. ONLY 6607 0609 AC250V 2200X3 R600 3 3 7 0604 6 8 7W C537 6637 0638 0603 4700 AC250V A C638 POWER iu SUN 3 STR53041 STR54041 D607 R616 5 neo EU1Z 23 u9 DEGAUSSING COIL 40617 09 0602 0 022 33 ER AC250V 42 0638 oov 0609 POWER CORD AC 120V 60HZ 220V 50HZ NOTE MEANS 220 240V VERSION FIG 8 POWER SUPPLY SCHEMATIC 40K R613 C619 68 470 iW 1KV 0611 14 3 DI B5V RU 2 l 620 422201 160 0612 13 RU 2 4 EET R615 68 35V gt 35V 1 4 C625 470 12 0643 1KV 68601 e ny 6 3V AG 2V 0606 W 40 16 IC602 D614 12V RU 2 hc6284 330 C409 11 470 510000 25V 16V R617C631 68 470 MO iW 1KV 0616 1607 10 061 RU 2 100UH h bi B 0644 2220 0618 400 PRU 2 03 KSB546 Y 560 1420153 FROM R621 MODE CONTROL Q6 B 509319 18k VIDEQ VIDEO INTERFACE ineur L 11 H SYNC SYNC INTERFACE MODE CONTROL CGA EGA 3 5V AC INPUT I LINE FILTER 5 L601 1602 U O D O H 4 O B 20 IC BUFFER IC103 CONTRAST 0101 BRIGHTNESS 0102 VERT HOR HOR OSC VIDEO BOAHD VERT OUTPUT DC 65V EGA DC 54V CGA gt DC 90V
11. The output signals of 101 in MODE 1 and MODE 2 are selected by the MODE signal from pin no 8 of 1C101 SL205 2 VIDEO R G B OUTPUT The R G B drive system is utilized in the video output circuit of this unit In the case of RED signal the combined color and blanking signals are amplfied sufficiently by the cascode transistor Q109 Q110 The cut off levels of the picture tube are con trolled by the bias VRs VR103 VR104 VR105 between 85Vdc and 145Vdc These DC voltages are taken from pin no 8 of FBT 7403 and no 14 of POWER TRANS 7601 The color signals and blanking signals of 0103 Q104 and Q105 are supplied to the base of Q110 Q112 Q114 The screen grid G2 is common the case of RED GREEN and BLUE CATHODE respectively The drive control VRs VR101 VR102 control the base current of Q110 Q114 for white balance adjustment H SYNC 9 gt 0604 0403 10 CONTROL FIG 2 SYNC INTERFACE CIRCUIT VERTICAL AND HORIZONTAL DEFLECTION CUIT 1 SVNC INTERFACE CIRCUIT In MODE 1 CGA MODE the polaritv of horizon tal and vertical svnc are both positive but in MODE 2 EGA MODE the polaritv of horizontal sync is positive and the vertical sync is negative If the H V svnc signal is applied in MODE 1 then the output voltage level from pin no 8 of IC102 EX OR gate is OV and the output voltage level from pin no 3 of IC102 is positive If the H V sync signal is applied in MODE 2 then the out
12. a reverse polarity type and that s done when the drive transistor Q401 is on and the output transistor Q402 is olf HORIZONTAL OUTPUT AND HV RECTIFIER Horizontal drive voltage which developed at pin 12 of the deflection processor IC401 is amplified through the horizontal drive stage Q401 and coupled to the base of the horizontal output cicuit via the horizontal drive transformer T401 Refering to Fig 3 the horizontal circuit generates the horizon tal scan and high voltage to be applied to the picture tube The function of the horizontal output stage Q402 is to serve as a switch for the horizontal output circuit Reffer to Fig 4 During the horizontal scanning period Q operates 51 is closed 52 is opened and the current is applied in one direction through the horizontal coils of the deflection yoke Ly and the capacitor MODE 1 C1 MODE 2 C1 C2 During retrace time Q be come to operate S1 is opened S2 is closed and the current is applied in the opposite direction through the damper diode D the horizontal coils of the deflection yoke Ly and the capacitor C1 C2 The high voltage required to be applied to the anode of the picture tube is generated by boosting the pulse from the collector of Q402 through T302 during the flyback retrace period and applying this boosted pulse to a serious of rectifiers Refering to Fig 5 high voltage regulation is accomplished internally in T403 HIGH VOLTAGE SHUT DOWN SYSTEM The shut
13. current flows into the base of output transistor included IC601 via the start up resistor R603 As a result the collector current flows through the primary windings pin 1 and pin 3 of the power transformer T601 and then it produces an electromagnetic force Therefore some voltage is FROM PING D406 OF T403 4 AFC PULSE D R423 20401 induced between 6 7 driving winding of the power tranormer The induced voltage is positively feedback to the base of the output tran sistor included 601 to increase the base current of this transistor As a result of this base current the collector current of that transistor is increased The above operation occurs instaneousiv to impress suffiecient base current The small signal transis tor Q601 protects 601 from the surge current and 0602 is trigger transistor The FBT B is selected by the MODE detecting circuit CGA MODE the FBT B voltage comes from pin 10 of T601 but in EGA MODE the FBT B comes from pin 11 of T601 by auto mode sensing circuit Here the mode sensing circuit let Q604 and Q603 operate D401 pu FIG 6 HIGH VOLTAGE SHUT DOWN SYSTEM CIRCUIT AC INPUT LINE FILTER RECTIFIER IC L601 L602 10601 5 DC 85V T601 14 13 DC 24V 12 DC 6 3V 1601 42V 10 O DC 54V MODE 1 DC 65V MODE 2 FIG 7 POWER SUPPLY BLOCK DIAGRAM 120V VERSION
14. down circuit prevents the high voltage from rising above a presence level Under norminal operat ing conditions this circuit is inactive Operation of the protector circuit depends upon an AFC pulse which apears at pin 3 of the horizontal output traformer T403 It monitors an AFC pulses sub jected to rectification by D406 Since it is in propor tion to the voltage of that AFC pulse if the incoming high voltage increases and exceeds its limit the AFC pulse voltage also inceases As a result there is a larger voltage produced to R422 so that its potential will eventually be higher than the voltage 8 2V of C444 7402 R418 0401 BASE FROM PIN 2 a gt 1 k 4 8402 16401 413 KU 412 in Tm R415 R416 7 R417 85 gt FIG 3 HORIZONTAL DRIVE CIRCUIT DEFLECTION COIL LY gt M VCE A MODE 1 ON MODE 2 OFF CRT ANODE CRT FOCUS CRI SCREEN AL4o1 lt a f RELAY I ABL CIRCUIT CTOR CIRCUIT B Sa FIG 5 HORIZONTAL OUTPUT CIRCUIT the Zener diode ZD401 turning it ON With D401 turned ON the X rav protector of IC401 operates to stop the horizontal oscillation shutting down the resultant high voltage SUPPLY voltage is full wave rectified the rectified smoother circuit and then changed to DC voltage by smoothing capacitor C610 When the power is turn on a small
15. 100 22 C POLVPROPVLENE CQ922M 200V 0 022M K C ELECTROLYTIC CEO4W 200V 47M C CERAMIC HK CK45 T B 500V 100 K C ELECTROLYTIC CEOAW T 10V 47M C POLVESTER CQ921M T 100V 0 1 J C POLVESTER CQ921M T 100V 0 0022 J C ELECTROLYTIC CEO4W 16V 220M SEE TABLE 1 ON THE PAGE C CERAMIC AC CK45B 250V 2200 M C CERAMIC AC CK45B 250V 2200 M C M POLYESTER CQS922M 250V 0 22M M U C C M POLYESTER CQS922M 250V 0 22M M U C C CERAMIC AC CKASB 250V 2200 M C CERAMIC AC CK45B 250V 2200 M C CERAMIC AC CKS45B 250V 2200P Z C CERAMIC AC CKS45B 250V 2200 2 01461 136 806 01461 136 806 01566 513 224 01566 513 224 01461 136 806 01461 136 806 01461 169 806 01461 169 806 C CERAMIC AC CKS45B 250V 2200P Z SEE TABLE 1 ON THE PAGE C CERAMIC TEMP CC45 DVST 1KV 4700 C CERAMIC HK CK45B 1KV 0 01M K C ELECTROLYTIC CD04W T 50V 10M 01461 169 806 01409 902 010 01419 901 100 01608 906 100 45 DESCRIPTION PART NO REMARK 45 1 680 01419 901 360 C POLVESTER CQ921M T 100 0 022 J 01505 723 223 C ELECTROLYTIC CEO4W 100V 47M 01609 403 090 C CERAMIC HK CK45B 1KV 470 01419 901 090 C ELECTROLYTIC CE04W 160V 220M 01603 909 221 C ELECTROLYTIC CE04W 35V 2200U 01603 905 222 C CERAMIC HK CK45B 1KV 470 01419 901 090 C ELECTROLYTIC CE04W 16V 1000M 01609 401 510 01603 904 471 01419 901 090 01609 403 120 01419 901 090 01609 403 120 01416 649 472 01416 649 472 01603 905 471 C ELECTROLYTIC VENT CE0
16. 11 D112 D113 DESCRIPTION SEE TABLE 1 ON PAGE R COMPOSITION RC 1 2T 1M K R METAL OXIDE RS 1P 680K J S R WIRE WOUND RW 2P 0 6 J R METAL OXIDE RS 3P 68K J S R METAL OXIDE RS 1P 33 J R CARBON RD 1 4T 10K J R CARBON RD 1 4T 56K J R METAL OXIDE RS 1P 33 J R METAL OXIDE RS 3P 5 6 J R CARBON RD 1 4T 820 J R CARBON RD 1 4T 820 J R METAL OXIDE RS 1P 68 J R METAL OXIDE RS 1P 68 J R METAL OXIDE RS 1P 68 J R METAL OXIDE RS 1P 68 J R CARBON RD 1 4T 560K J R METAL OXIDE RS 2P 5 6K J S R CARBON RD 1 4T 18K J R CARBON RD 1 4 1 8K J R CARBON RD 1 4 100 J R CARBON RD 1 4T 1K J R FUSIBLE RF 2P 1 8 J D IODE DIODE 1N4148 T DIODE 1N4148 T DIODE 1N4148 T DIODE 1N4148 T DIODE 1N4148 T DIODE 1N4148 T DIODE 1SS83 DIODE 1SS83 DIODE 1SS83 oe ux 01028 378 105 01085 427 684 01038 327 069 01085 627 683 01045 427 330 01018 277 103 01018 277 563 01045 427 330 01085 627 560 01018 277 821 01018 277 821 01045 427 680 01045 427 680 01045 427 680 01045 427 680 01018 277 564 01085 527 562 01018 277 183 01018 277 182 01018 277 101 01018 277 102 01057 527 189 02169 301 417 02169 301 417 02169 301 417 02169 301 417 02169 301 417 02169 301 417 02169 202 080 02169 202 080 02169 202 080 PART NO REMARK DESCRIPTION PART NO REMARK 02169 301 417 D115 DIODE 1N4148 T D116 DIODE 1N4148 T 02169 301 417 D117
17. 18 277 333 DESCRIPTION R CARBON RD 1 4 8 2K J R CARBON RD 1 4T 1K J R CARBON RD 1 4T 75K J R CARBON RD 1 4T 12K J R CARBON RD 1 4T 12K J R CARBON RD 1 4T 1K J R CARBON RD 1 4T 470 J R CARBON RD 1 2 4 7K J S R METAL OXIDE RS 2P 330 J R METAL OXIDE RS 2P 330 J R CARBON RD 1 4T 8 2 J R CARBON RD 1 4T 270 J R CARBON RD 1 4T 220K J R CARBON RD 1 4T 2 7K J R CARBON RD 1 4T 6 8K J R CARBON RD 1 4T 1 5K J R CARBON RD 1 4 4 7 J R CARBON RD 1 4T 1M J R METAL OXIDE RS 2P 270 J R CARBON RD 1 4T 1K J R CARBON RD 1 4T 180K J R CARBON RD 1 4T 1K J R CARBON RD 1 4 22K J R CARBON RD 1 4T 6 8K J R CARBON RD 1 4T 11K J R CARBON RD 1 4T 6 8K J R METAL OXIDE RS 3P 5 6K J S R CARBON RD 1 4T 10K J R CARBON RD 1 4T 56K J R CARBON RD 1 4T 12K J 36 PART NO 01018 277 822 01018 277 102 01018 277 753 01018 277 123 01018 277 123 01018 277 102 01018 277 471 01016 377 472 01045 527 331 01045 527 331 01018 277 829 01018 277 271 01018 277 224 01018 277 272 01018 277 682 01018 277 152 01018 277 479 01018 277 105 01045 527 271 01018 277 102 01018 277 184 01018 277 102 01018 277 223 01018 277 682 01018 277 113 01018 277 682 01085 627 562 01018 277 103 01018 277 563 01018 277 123 R600 R601 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R615 R617 R618 R619 R620 R621 R624 R627 R633 FR601 D101 D104 D105 D106 D107 D108 D1
18. 37 810 37GGA54X TC10 0 41G 02019 237 710 37SGA54X TC08 0 41NG TABLE3 AC POWER CORD LIST FOR NATIONALITY LOC NO CODE NO DESCRIPTION SPECIFICATION NATIONALITY OR MODEL NO 03051 801 010 03051 801 310 03052 800 810 03052 800 710 POWER CORD AC ASSY 1 1 11700 120V VERSION POWER CORD AC ASSY LP34 CEA4551F EUROPIAN TYPE POWER CORD AC ASSY BASEC CEA4551U ONLY FOR U K POWER CORD AC ASSY LP23 CEA4551AU AUSTRALIAN N y TA SCHEMATIC DIAGRAM AND WAVE FORM 120V 220V 240V VERSION 4 00 NOT USE YOUR INSTRUMENT BETWEEN PRIMARY POUR LA SECURITE TOUTESLES PIECES INDIQUEES DANS LES ZONES CAUTION GROUND SYMBOL AND SECONDARY CIRCUIT OMBREES DU SCHEMA SONT CRITIQUE POUR LA SECURITE POUR MAIN 3 ABBREVIATION AND SYMBOL 4 THE SHADED AREAS AND MARKS IN THE SCHEMATIC 2 D0 NOT USE YOUR INSTRUMENT BETWEEN SECONDARY TENIR LE DERGRE DE SECURITE DE LAPPAREIL NE REMPLACER LE 0 R METAL OXIDE SCHEMATIC DIAGRAMI WARNING DIAGRAM AND PART LIST DESIGNATE COMPONENTS GROUND SYMBOL xw AND PRIMARY CIRCUIT FABRICANT DONT LE FONCTIONNEMENT EST CRITITE QUE PAR DES R FUSIBLE PP C POLYPROPYLENE WHITCH HAVE SPECIAL CHARACTERISTICS IMPORTANT ee BEFORE SERVICING CHASSIS READ FOR SAFETY AND SHOULD BE REPLACED ONLY WITH 3 THE SHADED AREAS IS A PRIMARY SECTION HOT PART PIECES RECOMMANDEES PAR LE FABRICANT CONSULTEA LA NOMENCLA CO R COMPOSITION MP C METAL POLYESTER MODEL CEA455
19. 4 104 01608 903 101 01608 903 110 01608 903 220 01417 344 104 01417 344 104 01417 344 104 01417 318 271 01517 383 224 01607 908 100 01417 318 271 01517 383 224 01607 908 100 01417 318 271 01517 383 224 01607 908 100 01608 909 109 POWER S W LINE CRT GND GND LINE DEGAUSSING REF DESCRIPTION 130 C140 C141 C145 C146 C147 C148 C301 C302 C303 C304 C305 C307 C309 C312 C313 C315 C316 C321 C322 C326 C329 C332 C401 C402 C403 C404 C405 C406 C407 C408 C409 C410 C CERAMIC HK CK45B 500 4700 K C CERAMIC TEMP CCAS T SL 50V 270 J C CERAMIC HK CKAS T F 50V 0 1M Z C ELECTROLYTIC CEO4W T 35V 4 7UF 4x7 C CERAMIC HK CKAS T F 50V 0 1M Z C CERAMIC HK CK45B 500V 4700 K C CERAMIC HK CK45B 1KV 0 01M K C POLVESTER CQ921M T 100V 1200PF J C POLVESTER CQ921M T 100 0 1M J C POLVPROPVLENE CQ922M 100V 6800 J C POLVESTER CQ921M T 100V 0 022 J C ELECTROLYTIC CEO4W 100V 0 68M M C ELECTROLYTIC CEO4W 25V 1000 C TAN SOLID CS35V 0 68UF K C ELECTROLYTIC CEO4W 35V 100M C ELECTROLYTIC CEO4W T 25V 100M C ELECTROLVTIC CE0AW T 35V 22M 105 C RA C POLVESTER CQ921M T 100V 0 1M J C CERAMIC HK CK45 T B 500V 560 K C CERAMIC HK CK45 T B 500V 100 C POLYESTER CQ921M T 100V 0 047 J C CERAMIC HK CK45 T B 50V 1000 K C CERAMIC HK CK45 T B 50V 1000 K C CERAMIC TEMP CC45 T SL 50V 100 J C POLYPROPYLENE CQ922M 100V 2200PF J C CERAMIC TEMP CC45 T SL 50V
20. 447 8109 O8 38 isa CEA4551 0 31 6 3709822 ST 04 4552 0 39 6 3766A44X TCO 0101 resaj 9199 CEA4553 0 39 6 37SGA44X TCO1 R104R105 8401 8202 220 220 220 2207 BEAD A 4554 0 41 6 3766 54 10 o SND EZERERUB S R DRIVE CEA4555 0 41 6 3756 54 08 8148 A119 C105 R130 ola 550 590 iato PART COMPARISON TABLE FOR POWER INPUT R139 6 120 220 240 SPECIFICATION SPECIFICATION 160 250 330 soov 2200 L602 15MH F601 250V 15 akv azoo 16V 1000UF 85C CN402 CN405 9096 491915 e e o ILO JIL Tello H L CONTRAST 3 4 5 8 935 j 2 5VP P V Bik 10301 147830 i 1 150 0604 0604 607 609 SEER gt A 30 500 3 gt f CGA 0 435v 43 B OC gt C430 ZD403 tie K 910 47 Us me lt 34077204 200 8225 100 5 945 a 0307 0405 d Z IV F B T R302 831 118VP P H H DV LOC NO 0115 1 SK 103 1N4148 4 173 VR104 22K 825 6 5 70101 20106 045 1EBX6 FD150 114 10 0106 1 1N4148 1N4148 SVP P H V TEXT S W NORMAL
21. 4W 25V 470M 13x20 C CERAMIC HK CK45B 1KV 470 C ELECTROLYTIC CE04W 100V 220M C CERAMIC HK CK45B 1KV 470 C ELECTROLYTIC CE04W 100V 220M C CERAMIC HK DE7150F 472M VA 1 KC C CERAMIC HK DE7150F 472M VA 1 KC C ELECTROLYTIC CE04W 35V 470M 46 PART COMPARISON LIST FOR POWER INPUT PARTS amp LOCATION LOC NO R600 R CEMENT WIRE T601 TRANSE SMPS C610 C ELECTROLYTIC L601 COIL LINE FILTER L602 COIL LINE FILTER F601 FUSE 601 POSISTOR IC601 IC C600 C CERAMIC HK 02449 622 010 02449 622 010 04709 088 060 AC POWER INPUT DESCRIPTION CODE NO 01039 627 339 02879 004 710 220V 240V SPECIFICATION CODE NO SPECIFICATION 01039 627 689 RW 7P 6 8 J 02879 004 810 220 50 2 4551 01603 912 470 CE04W 400V 220 02429 639 010 15MH 02429 639 010 15MH 04709 084 970 50T 250V 3 15A 20MM 02199 003 120 PTH451C02BG200N270 02119 601 660 STR54041 RP 7P 3 3 P 110V 60Hz CEA4551 16V 220M HL38 HL38 250V 515 PTH451CO6BG080N140 STR53041 CK45B 2KV 4700 K 01603 910 331 2189 605 040 02119 601 540 01416 768 472 TABLE2 CRT LIST FOR MODEL NO MODEL NO CODE NO SPECIFICATION REMARK CEA4551 CEA4552 CEA4553 CEA4554 CEA4555 02019 234 310 3709822 8 09 0 31NG 02019 237 510 37GGA44X TCO1 0 390 02019 237 610 37SGA44X TCO1 0 39NG 02019 2
22. DIODE 1N4148 T 02169 301 417 D150 DIODE 1N4148 T 02169 301 417 0301 DIODE BA158 02169 304 270 D401 DIODE 1N4148 T 02169 301 417 D402 DIODE 1N4148 T 02169 301 417 D403 DIODE TVR 06G 02169 302 060 D405 DIODE TVR 06G 02169 302 060 D406 DIODE TVR 06G 02169 302 060 D407 DIODE TVR 06G 02169 302 060 D408 DIODE BA158 02169 304 270 D409 DIODE 1N4148 T 02169 301 417 D428 DIODE TVR 06G 02169 302 060 D601 DIODE BY133 02169 306 430 D602 DIODE BY133 02169 306 430 D603 DIODE BY133 02169 306 430 D604 DIODE BV133 02169 306 430 D605 DIODE EU1Z 02169 304 260 D606 DIODE SI RU1P 02169 206 240 D607 DIODE EU1Z 02169 304 260 D608 DIODE 1N4148 T 02169 301 417 D609 DIODE RGP1OG T 02169 219 107 D610 DIODE EU1Z 02169 304 260 D611 DIODE RU 2 02169 219 417 D612 DIODE RU 2 02169 219 417 0613 DIODE RG2Y 02169 219 330 D614 DIODE RU 2 02169 219 417 D615 DIODE RG 2 02169 219 340 D616 DIODE RU 2 02169 219 417 D617 DIODE RG 2 02169 219 340 D618 DIODE RU 2 02169 219 417 eat REF DESCRIPTION PART NO REMARK ZD101 ZD102 ZD103 ZD104 20105 20106 20109 20110 20111 20401 20402 20403 20601 LED Q101 Q102 Q103 Q104 Q105 Q106 Q109 Q110 DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER UZ 5 1B T DIODE ZENER ZPD8 2 DIODE ZENER UZ 27BM DIODE ZENER UZ 5 1B T DIODE ZENER UZ 12BM 11 6
23. H T0 3 SCREW TAP PH 2S 3X6 FE FZY W W SCREW TAP FH 2S 4X8 FE FZB SCREW TAP RH 2S 4X8 FE FZY NONE RAIL PCB PPO VO SCREW TAP PH 2S 3X8 FE FZY W W SCREW TAP PH 2S 3X8 FE FZY W W CLAMP CABLE 10505 14 TO 8 CHASSIS BOTTOM SECC I 1 2 SPONGE PCB CHL RUBBER FROM BLK NUT HEX 1 M3 FE FZY WASHER TOOTHED B 6 4 0 5 07623 709 050 06674 715 220 07128 540 102 06001 921 010 02309 110 090 07148 530 08 07008 130 061 0661 4 725 510 07148 530 121 03529 705 010 07128 540 102 08 50 I 702 140 08302 700 110 07148 530 161 0830 70 I 040 06834 702 710 07148 540 121 06611 702 513 07148 540 08 04554 702 210 07108 126 041 07118 540 083 07148 540 08 07328 204 00 NONE 06023 702 020 07 154 230 008 07154 230 08 06654 204 001 06121 703 110 06803 700 3 07208 113 001 amp lt N 3 I G G CI E DESCRIPTION SPECIFICATION CODE NO 3 10 FZY HEAT SINK 10505 4 T2 0 TERMINAL BOARD VO 70805 SHIELD REAR SECC I 5 5 25 35 1 FE SCREW TAP TH 2S 4X16 FZW COVER REAR PPO VO 70805 LABEL RATING POLVESTER TO SCREW TAP FH 2S 4XI5 FE SHIELD TOP SBC I FZW TO 5 SCREW TAP 25 3 12 FE FZY SCREW TAP RH 2S 3X6 FE FZY HEATSINK V OUT SPC I TI
24. IZE using V SIZE VR VR 307 so that vertical size is 172MM in MODE 2 b Change to MODE 2 and adjust vertical size to 172MM equal to MODE 2 vertical size using CGA V SIZE VR402 2 10 FOCUS ADJUSTMENT Adjust the focus control to the optimum position BLACK AND WHITE TRACKING Turn the screen control fully clockwise Turn the red green and blue bias controls mechanical centers Set the brightness con trol and the red and blue drive controls at the center positions b Turn the SW301 to the left 2 11 ing between tabs to convergence the c Rotate the screen control counterclockwise vertical RED and BLUE lines Rotate the until a raster either the red green or blue pair of rings maintaining spacing be appears dimply on the screen tween tabs to converge the horizontal Notes RED and BLUE lines Adjust VR104 and VR105 if red is appears Refer to FIG 10 Adjust VR103 and VR105 if green is appears b 2 After completing the RED and BLUE cen Adjust VR103 and VR104 if blue is appears ter convergence locate the pair of six d Return the SW301 to its original position pole magnet rings Rotate the individual e Operate the computer in such a way that rings change spacing between tabs the entire screen is R G B white converge the vertical RED and BLUE f Rotate the RED and BLUE drive controls magenta and GREEN lines Rotate the until the raster is white pair of rings maintaining spacing between g Set the brightne
25. J 01018 277 274 R183 R COMPOSITION RC 1 2T 330 K 01028 378 331 94 gt DESCRIPTION PART NO REMARK R301 R CARBON RD 1 4 200K J 01018 277 204 R302 R CARBON RD 1 4 820K J 01018 277 824 R303 R CARBON RD 1 4 68K J 01018 277 683 R304 R CARBON RD 1 4 68K J 01018 277 683 R305 R CARBON RD 1 4T 22K J 01018 277 223 R310 R CARBON RD 1 4T 330 J 01018 277 331 R312 R CARBON RD 1 4T 680 J 01018 277 681 R313 R CARBON RD 1 4T 82 J 01018 277 820 R314 R CARBON RD 1 4T 220 J 01018 277 221 R315 R METAL OXIDE RS 2P 3 3 J 01045 528 339 R316 R METAL OXIDE RS 2P 220 J S 01085 527 221 R318 R CARBON RD 1 2T 150 J S 01016 377 151 R320 R CARBON RD 1 4 10K J 01018 277 103 R321 R CARBON RD 1 4T 100K J 01018 277 104 R322 R CARBON RD 1 4 8 2K J 01018 277 822 R323 R CARBON RD 1 4 1K J 01018 277 102 R324 R CARBON RD 1 4T 220 J 01018 277 221 R325 R CARBON RD 1 4 5 6K J 01018 277 562 R326 R CARBON RD 1 4 22K J 01018 277 223 R327 R CARBON RD 1 4T 150 J 01018 277 151 R333 R CARBON RD 1 4T 120 J 01018 277 121 R337 R CARBON RD 1 2T 150 J S 01016 377 151 R341 R CARBON RD 1 2T 270 J S 01016 377 271 R400 R METAL OXIDE RS 68 J 01045 427 680 401 R CARBON RD 1 4 2 2K J 01018 277 222 R402 R CARBON RD 1 4T 22K J 01018 277 223 R403 R CARBON RD 1 4T 12K J 01018 277 123 R404 R CARBON RD 1 4T 1K J 01018 277 102 R405 R CARBON RD 1 4 22K J 01018 277 223 R406 R CARBON RD 1 4 82K J 01018 277 823 R407 R CARBON RD 1 4T 33K J 010
26. L401 and its related circuit WIRING DIAGRAM AND PARTS _ 11 1 1 99 CONTRAST T CNIOI x 9115 DEGAUSSING COIL o MAIN VIEW lt m gt LO BLK BRN WHT BRU 23 mA MAIN VIEW SRV S W BLK BRN 5 m T OG a VIEW CRT PCB BOTTOM VIEW BACK CONTROL PCB BACK CONTROL PCB TOP VIEW BOTTOM VIEW LED PCB TOP VIEW LED PCB BOTTOM VIEW 27 28 gt TT O a gt lt DESCRIPTION SPECIFICATION CODE NO Q TYREMARKS gt C N EXPLODED VIEW PART LIST KNOB POWER PPO VO 70805 SPRING POWER 505 502 WPA 20 5 5 25 4 10 FE FZW COVER FRONT VO 70805 LED KLG 208E SCREW TAP RH 2S 3X8 FE FZY SCREW PH M3X6 FE FZY BRACKET POWER SECC 1 0 SCREW TAP RH 2S 3X12 FE FZY POWER SWITCH JPW 1101 SCREW TAP TH 2S 4X10 FE FZY STAND TOP PPO 70805 STAND STOPPER ACETAL HB SCREW TAP RH 2S 3Xl6 FE FZY STAND 1464 PPO 70805 FOOT STANT CR HB GRY SCREW TAP RH 2S 4XI2 FZY BRACKE T RIGHT SECC I TI SCREW TAP RH 2S 4X8 FE FZY EARTH PLATE PBP3 SP
27. O FZ2 SCREW TAP RH 2S 3X8 FE FZY HEAT SINK TR AIOB5OS HIA4 2 0 SCREW TAP TH 2S 4X10 FE SPRING GND SPS3 TO 3 SHIELD VIDEO ASSY SPTE 10 3 SCREW TAP RH 2S 5X25 FE FZY WASHER SPRING SPC 6 FZY2 CRT DY 14 COLOR SCREW TAP TH 2S 4XI0 FE FZW VR ROUND SIGNAL CONTRAST VR ROUND SIGNAL BRIGHTNESS BRACKE T CONTROL SECC I 70 8 KNOB VR ABS VO GRY 8240 BRACKET LEFT M SECC I 0 HOLDER FBT VO BLK TO 8 SECC I 11 0 POWER CORD LP3AA LP SIGNAL CABLE ASSY 2464 24 C9 SCREW TAP TH 2S 4X16 FE FZY HOLDER CORD NVLON 6 6 NATURAL SCREW RH M4X6 FE FZY 07048 130 101 05682 703 020 03301 700 610 04542 710 410 07148 530 101 07128 540 162 06001 922 010 08033 737 710 07118 540 152 04541 701 810 07148 530 121 07148 530 061 05684 705 010 07148 530 08 05682 705 810 07128 540 102 06673 703 310 04542 710 510 07154 700 410 07334 700 710 02019 234 310 07128 540 102 01201 102 022 01201 102 005 06613 711 910 07623 707 610 06611 704 010 06603 704 810 06611 702 810 03051 801 010 03051 401 610 07128 540 06 06604 708 410 07048 140 061 HEAT SINK VER Al 050S HI 4 T2 0 05682 06 410 MARKED PARTS ARE ONLY USED THE CASE OF THE UL CSA FCC TUV FTZ etc REMARK REPLACEMENT LIST ELECTRICAL PARTS IMPOTANT SAFETY NOTICE Components identified by the symbol have
28. SERVICE MANUAL COLOR MONITOR 455 _ CONTENTS SPECIFICATION d Saa IMPORTANT SERVICE SAFETY PRECAUTION THEORY OF OPERATION 2 2 2 4 4 1 VIDEO 2 amp VERTICAL DEFLECTION 3 POWER SUPPLY ALIGNMENT INSTRUCTION 22 22 22222222 22 2 2 1 2124 44 4 TRUOBLESHOOTING GUIDE T WIRING DIAGRAM AND PARTS 6 2 222222 3_ EXPLODED VIEW PARTS kbar Pus ELECTRICAL PARTS LIST SCHEMATIC DIAGRAM AND WAVE 22 222 22 SEMICONDUCTOR LEAD IDENTIFICATION SPECIFICATION DESCRIPTION NOMINAL LIMIT 1 Power input AC 120V 60Hz AC 220V 240V 50Hz option 2 Power consumption 70W MAX 3 CRT 14 90 deflection P22 Medium Decay MODEL 4551 CEA4552 4553 4555 CRT 0 39G 0 39NG 0 41G 0 41NG 4 Input signal a Video MODE 1 separate 2 4V 5 0Vpp MODE 2 R G B r g separate TTL
29. VH 2P 3 96 CN605 SEE TABLE 1 ON THE PAGE POWER CONNECTOR PIN BASE B3P LV TN JST DY CONNECTOR PIN BASE B4P LV TN GROUND CRT ASSY CD 1464 GROUND WIRE ASSY MD 1260R DEGAUS CONNECTOR WAFER B2P LV TN JST CAPACITORS C101 C CERAMIC HK CK45 T F 50V 0 1M Z C103 C CERAMIC HK CK45 T F 50V 0 01M Z C104 C ELECTROLYTIC CE04W T 16V 10M C105 C ELECTROLYTIC CE04W T 16V 100M C106 C CERAMIC HK CK45 T F 50V 0 1M Z C107 C CERAMIC HK CK45 T F 50V 0 01M Z C108 C CERAMIC TEMP CC45 T SL 50V 270 J C109 C ELECTROLYTIC CE04W T 16V 47M C112 C CERAMIC HK CK45 T F 50V 0 1M Z C113 C ELECTROLYTIC CE04W T 16V 100M C114 C ELECTROLYTIC CE04W T 16V 10M C115 C ELECTROLYTIC CE04W T 16V 22M C116 C CERAMIC HK CK45 T F 50V 0 1M Z C117 C CERAMIC HK CK45 T F 50V 0 1M Z C118 C CERAMIC HK CK45 T F 50V 0 1M Z C119 C CERAMIC HK CK45 T B 50V 270 K C120 C M POLYESTER CF922M 250V 0 22M J C121 C ELECTROLYTIC CE04W 100V 10M 105 C RA KM C123 C CERAMIC HK CK45 T B 50V 270 K C124 C M POLYESTER CF922M 250V 0 22M J C125 C ELECTROLYTIC CE04W 100V 10M 105 C RA KM C126 C CERAMIC HK CK45 T B 50V 270 K C127 C M POLYESTER CF922M 250V 0 22M J C128 C ELECTROLYTIC CE04W 100V 10M 105 C RA KM C129 C ELECTROLYTIC CE04W T 160V 1M gt 03344 131 010 03344 155 930 03344 155 940 03054 641 410 03054 640 040 03344 156 320 01417 344 104 01417 344 103 01608 903 110 01608 903 101 01417 344 104 01417 344 103 01407 017 271 01608 903 470 01417 34
30. WAFER 5267 04A MOLEX CON 4P ASSY H 5264 04 450MM CONNECTOR WAFER 5267 02A MOLEX CONN 2P ASSY 5264 02 L 300MM CONNECTOR WAFER 5267 04A MOLEX CONNECTOR 4P ASSV 5264 04 L300 CONNECTOR WAFER 5267 07A MOLEX CONNECTOR 7P 55 5264 5294 07 L350 CONNECTOR WAFER 5267 04A MOLEX CONNECTOR 4P ASSY 5264 04 L300 CONNECTOR WAFER 5267 03A MOLEX CONNECTOR 3P ASSY 5264 03 L300 CONNECTOR WAFER 5267 02A MOLEX CONNECTOR HEATER ASSV SAD x 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 02429 048 010 03344 156 190 03051 401 610 03344 156 140 03054 646 150 03344 156 120 03054 617 660 03344 156 140 03054 646 140 03344 156 170 03054 655 310 03344 156 140 03054 646 140 03344 156 130 03054 645 930 03344 156 120 03053 605 720 FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD FERRITE BEAD SIGNAL CABLE SIGNAL CABLE BRI CONT LINE BRI CONT LINE HEATER LINE HEATER LINE SYNC LINE SYNC LINE ABL BLK 12V LINE ABL BLK 12V LINE 145V 85V LINE 145V 85V LINE LED LINE LED LINE PART DESCRIPTION CN604 CONNECTOR WAFER B2P
31. has a sawtooth wave YES NO Check IC401 1C402 Check IC102 C401 Q401 Check IC401 1C402 VR405 NO Check MODE Detector circuit Check V SYNC but H SVNC is normal Check the Signal Cable connection But Hori SYNC is normal Vertical adjustment is not possible at all slightly V SYNC frequency varied Check VR306 C301 C302 1C102 1C401 301 1 402 Check IC102 1C401 1C301 1C402 SW301 related circuit 19 4 ABNORMAL MODE CHANGING MODE DETECTING Check Mode Changing MODE1 CGA 15 75kHz MODE2 EGA 22kHz Is the Vertical input signal NO Is the V input signal positive negative YES Check PC and Signal Cable YES connection Is the control voltage 0v 8 of IC102 Is the H SYNC positive pin 6 of IC102 Is the V SYNC positive pin 11 of IC102 Is the M0 positive pin 8 of IC101 Is the control voltage 3 2V Is the H SYNC Positive Is the V SYNC negative Is the M0 negative YES JA s the 9 10 11 of IC402 OV YES Check 1C102 1C101 and its related circuit NO Is the 9 10 11 of IC402 12V YES Check Q606 pin 7 of IC402 5V NO Is the FBT B 54V Is the FBT 65V Check Q603 Q604 Q402 T403 FBT Does the relay RL401 Does the relay RL401 open operate 0V YES YES Check Q403 Q404 R
32. in Connection its related Circuit NO Turn the Screen BRT CONT Control Clockwise A Check Syncronization NO Check H V SYNC Circuit connect signal cable Refer to 3 Check MODE 1 2 Check Mode Detecting Circuit Operation and Signal Cable Refer to ATT 4 Check 1C101 1C102 Q103 Q105 Q109 Q114 CRT Pin Connection Check 16 Color MODE1 or 64 Color MODE 2 NO ZD401 Q405 and its related Circuit NO Check Q101 Q102 Q106 YES Check the BRT and CONT Operation 17 1 ABNORMAL POWER POWER PART Does 150V appear between the capacitor C605 AND NO Check F601 L601 L602 POWER S W D601 D604 R600 Check Q601 Q602 1C601 D605 D609 T601 D611 D618 FR601 heater 602 12 ATT 2 ABNORMAL H OSC H and V CIRCUIT NO RASTER ABNORMAL PICTURE SIZE ABNORMAL VIDEO ON THE SCREEN Check HV X RAY Protector for operation YES The High Voltage Protector Circuitry make an audibole noise during operation when power S W is ON OFF Open the D401 NO Check 1C401 1C402 Q401 T401 and its related circuit YES Check the H OSC YES Check H SYNC YES Check ZD401 D406 T403 FBT and its related circuit 71685 3 ABNORMAL H V SYNC Check the Signal Cable connection Check H SYNC but Vert SYNC is normal With the H HOLD control does the horizontal SYNC frequency vary Check IC401 1C402 VR405 Does pin 5 of IC402
33. level Positive b Synchronous MODE 1 H V Sync TTL Level Positive MODE 2 H Sync TTL Level Positive V Svnc TTL Level Negative 5 Resolution MODE 1 CGA 640 dots x 200 lines 16 colors MODE 2 640 dots x 350 lines 64 colors 6 Synchronous a Horizontal MODE 1 15 75KHz overscan 0 3KHz MODE 2 21 8KHz undescan 0 3KHz 50Hz 60Hz b Vertical 7 Display size 9 84 x 6 77 250mm x 172mm 4 2mm 8 Linearity 7 MAX High voltage 22kV NOTES Nominal specs represent the design specs all units should be able to approximate these some will exceed and some may be drop slightly below these specs Limit specs represent the absolute worst condition that still might be considered acceptable in no caseshould a unit perform to less than any limit specs IMPORTANT SERVICE PRECAUTIONS Service work should be performed only qualified service technicians who thoroughly familiar with all of the following safety checks and servicing guidelines WARNING 1 For continued safety do not attempt to modify the circuit 2 Disconnect the AC power before servicing 3 Semiconductor heat sinks are potential shock hazards when the chassis is operating SERVICING THE HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system remove the static charge by connecting a 10kohm resis tor in series with an insulated wire such as a test pr
34. lines atround the edges of the CRT Tilt the deflection yoke up and down Insert tit adjustment wedge 1 and 2 between the deflectin yoke and the CRT until the mis convergence illustrated FIG 12 has been corrected the deflection yoke right and left Insert tilt adjustment wedge 3 between the deflec tion yoke and the CRT until the misconver gence illustrated FIG 13 has been corrected Alternately change the spacing between and depth of insertion of the three wedge until proper dynamic convergence is obtained Check purity and readjust if necessary RED FIGURE 13 DYNAMIC CONVERGENCE FIGURE 4 DEFLECTION YOKE REAR VIEW TROUBLE 5 GUIDE Flow charts and diagrams in this chapter provide you with the information you need for diagonostic problem isolation and component replacement NO RASTER FAIL CHECK PROCEDURE 85V Line 24V Line 6 3V Line HEATER 12V Line FBT B Line NO Check Power Part Refer to ATT 1 Check High Voltage Check H OSC Operation H DEF HV Current Refer to ATT 2 YES Check Vertical NO Check SW301 1C401 Circuit _ IC402 IC301 its related circuit 5 Check Socket B NO Check CRT SOcket B Line 145V 85V 6 3V 12V 5V and its related circuit YES Check Self Raster NO disconnect signal cable Check Blanking YES YES Check 1 101 1 102 0103 0105 _ ZD401 Q405 2109 0114 P
35. n the high voltage regulator is operating properly there is no possibility of an X radiation problem Everytime color chassis is serviced the bright ness should be tested while monitoring the high with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry When trobleshooting or taking test measure ments on a display monitor with excessively high voltage avoid being unnecessarily close to the display monitor Do not operate the display monitor longer than is necessary to locate the cause of excessive voltage BEFORE RETURNING THE DISPLAY MONITOR Fire and Shock Hazard Before returning the display monitor to the user perform the following safety checks Inspect all lead dress to make certain that the leads are not pinched or that the leads are not lodged between the chassis and other metal parts in the displav monitor 2 Inspect all protective devices such as non metallic control knobs insulating materials cabinet backs adjustment and compartment covers or shields isolation resistor capacitor net works mechanical insulators etc 3 To be sure that no shock hazard exists check for leakage current in the following manner e Plug the AC line cord directly into a 120 AC outlet Do not use an isolation tra
36. nsformer for this test e Using two clips leads connect 1 5 kohm 10 watt resistor paralleled by a 1 5uF capacitor in series with all exposed metal cabinet parts and a known earth ground such as electrical conduit or electrical ground connected to earth ground e Use a SSVM or VOM with 1000 ohms per volt or higher sensitivity to measure the AC voltage drop across the resistor See Figure 1 e Connect the resistor to all exposed metal parts having a return path to the chassis metal cabinet screw heads knobs and shafts escutcheon etc and measure the AC voltage drop across the resistor e reading of 0 3volt RMS this corresponds to 0 5milliamp AC or more is excessive and indicates a potential shock hazard which must be corrected before returning the display monitor to the user SAFETY NOTICE Many electrical and mechanical parts which have special characteristics in this chassis often pass unnoticed and the protection afforded by them can not necessarily be obtained by using re placement components rated for higher volt age wattage etc Replacement parts that have these special safety characteristics are identified in this manual and its supplement electrical components having such features are identified by a in the Parts List and Schematic Diagrams Before replacing any of these components read the Parts List in this manual carefully The use of substitute replacement parts that do not have the same safety charac
37. obe between the chassis and the anode lead The AC line cord should be disconnected from the AC outlet 1 The picture tube in this display monitor employs integral implosion protection 2 Replace with a tube of the same type and number for continued safety 3 Do not lift the picture tube by the neck 4 Handle the picture tube only when wearing shat ter proof goggles and after discharging the high voltage anode completely X RADIATION AND HIGH VOLTAGE LIMITS 1 Be sure all service personnel are aware of the procedures and instructions covering X radia tion The only potential source of X ray in current solidstate display monitor is the tube However the picture tube does not emit measurable X ray radiation if the high voltage is as specified in the high voltage check instruc tion It is only when high voltage is excessive that X radiation is capable of penetrating the shell of the picture tube including the lead in glass material The important precaution is to keep the high voltage below the maximum level specified It is essential that servicemen have available at all times an accurate high voltage meter The calibration of this meter should be checked periodically High voltage should always be kept at the rated value no higher Operation at high voltages may cause a failure of the picture tube or high voltage circuitry and also under certain conditions may produce radiation in excess of desirable levels Whe
38. put voltage level from pin no 8 of IC102 is 3 2V and the output polarity from pin no 3 of 102 is negative According to the polaritv of vertical sync MODE 1 and MODE 2 are selected automat ically Vertical Deflection Circuit Vertical circuit is composed of IC102 74HCTLS86 IC301 LA7830 401 LA7851 1 402 MC14053BCP and its relative circuits The vertical sync signal from IC102 which polarity is positive or negative is applied to pin no 19 of 401 Pin 19 of 401 is connected to the vertical oscillation circuit The frequency of oscillator is controlled by the volt age of pin 18 which can varied by the V HOLD VR VR306 The output circuit of IC301 is controlled by V SIZE VR VR 307 to vary the vertical size of the raster that is related both MODE 1 and MODE 2 But V SIZE of MODE 1 is only controlled by CGA V SIZE VR VR402 Horizontal Oscillator AFC and Drive Circuit The horizontal sync signal with positive polarity is applied to pin 1 of IC401 The output from the fly back transformer T403 is connectored pin 4 of IC401 as part of the automatic frequency circuit AFC H CENTER VR VR407 determines the posi tion of picture in MODE 1 and MODE 2 but CGA H CENTER VR VR403 controls the position of CGA picture only The horizontal oscillation frequency is obtained from pin 12 of IC401 and it is fed to the next horizontal drive circuit The pulse switching mode of the drive and output stage is
39. special characteristics which is impotant for safety When replac ing any of these components use only manufacturer s specified parts NOTE Tolerance 1 J 5 K 10 20 100 0 2 8096 20 REF NO DESCRIPTION PART NO REMARK RESISTORS R101 R CARBON RD 1 4T 220 J 01018 277 221 R102 R CARBON RD 1 4 220 J 01018 277 221 R103 R CARBON RD 1 4T 220 J 01018 277 221 R104 R CARBON RD 1 4T 220 J 01018 277 221 R105 R CARBON RD 1 4T 220 J 01018 277 221 R106 R CARBON RD 1 4T 220 J 01018 277 221 R109 R METAL FILM RM 1 8T 4 7K J 01048 177 472 R110 R METAL FILM RM 1 8 1K J 01048 177 102 R112 R METAL FILM RM 1 8T 2 7K J 01048 177 272 R114 R METAL FILM RM 1 8T 10K J 01048 177 103 R115 R METAL FILM RM 1 8T 560 J 01048 177 561 R116 R METAL FILM RM 1 8T 560 J 01048 177 561 R117 R METAL FILM RM 1 8T 560 J 01048 177 561 R118 R METAL FILM RM 1 8T 560 J 01048 177 561 R119 R METAL FILM RM 1 8T 560 J 01048 177 561 R120 R METAL FILM RM 1 8T 560 J 01048 177 561 R121 R METAL FILM RM 1 8T 1 5K J 01048 177 152 R123 R METAL FILM RM 1 8T 1 5K J 01048 177 152 R125 R METAL FILM RM 1 8T 1 5K J 01048 177 152 R127 R METAL FILM RM 1 8T 1 2K J 01048 177 122 R130 R METAL FILM RM 1 8T 5 6K J 01048 177 562 R131 R METAL FILM RM 1 8T 5 6K J 01048 177 562 R132 R METAL FILM RM 1 8T 5 6K J 01048 177 562 R133 R METAL FILM RM 1 8T 1K J 01048 177 102 R134 R METAL FILM RM 1 8T 1K J 01048 177 102 e REF NO DESCRIPTION PART
40. ss control at its maximum tabs to converge the horizontal RED and position and adjust the sub brightness con BLUE magenta and GREEN lines Refer trol until a reading of 20 2F L appears to FIG 11 h Turn the brightness control in either direc tion to check that the picture maintains a 2 13 DYNAMIC CONVERGENCE good white balance Dynamic convergence convergence of the i Repeat steps a thru h for readjustment three color fields at the edges of the CRT Horizontal 12 Lines Min screen is accomplished by the proper in Vertical 16 Lines Min x sertion and positioning of three rubber wedges between the edge of the dellection 2 12 STATIC CENTER CONVERGENCE yoke and the funnel of the CRT a Switch the display monitor ON and allow it to warm up 15 minutes b Operate the computer in such way that the A entire screen is a crosshatch pattern on the center of the CRT screen FIG 9 HORTZONTAL I2 LINES MIN 16 LINES FIGURE 10 5 CONVERGENCE FIGURE 9 CROSSHATCH PATTERN Proceed as follows b 1 Locate the pair of four pole magnet rings Rotate the individual rings change spac FIGURE 11 STATIC CONVERGENCE 4 d D This is accomplished the following ner Switch the display monitor ON and allow it to warm up for 15 minutes Apply the crosshatch pattern FIG 9 from the computer to the display monitor Ob serve spacing between
41. teristics as specified in the Parts List may create shock fire or other hazards 0 15 N EST PROVE TO EXPOSED TO KNOWEN METAL PARTS EARTH GROUND FIG 1 LEAKAGE CURRENT TEST CIRCUIT 4551 is a high resolution color display using 0 31 dot pitch NON GLARE CRT CEA4552 0 39 glare CRT CEA4553 0 39 non glare CRT CEA4554 0 41 glare CRT 4555 0 41 non glare CRT It uses R G B or R r G g B b TTL input Video Signals and separate TTL sync signals It can operate in 16 colors 640 by 200 overscan mode or 64 colors 640 by 350 underscan mode This two mode is automatically switched by the polarity of vertical frequency VIDEO I Video Drive Circuit The video signals are applied to CUSTOM IG 101 The output signals of IC101 are applied to IC103 which is open collector Hex buffer The output signal level of IC103 R r G g B b are controlled bv the BRIGHTNESS VR and SUB BRIGHTNESS VR VR110 and the secon darv signals r g b are controlled bv the CONTRAST The output signals of IC103 are to combine blanking signals H V blanking Primarv signals R G B and secondarv signals r g b are mixed through R121 and D116 R123 PIN _ OF 16104 1 V SYNC gt gs 2 701101 and D117 R125 D115 respectively in mode 2 the signals applied to the base of pre amp transistors Q103 Q104 Q105
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