Fluke 10 11 12 Service Manual
Contents
1. eese 1 1 1 1 1 1 1 2 Specifications se Gs e cp d te 1 1 2 Theory of Operation cnr ite nhe rint euer 2 1 2 1 Introduetioniz x RR estet ee IRE SS 2 3 2 2 Theory of eet dee etu 2 3 2 3 Analog Measurement IC UIT sss 2 3 2 4 Microcomputer IC 02 2 3 2 5 VCHEK Input Resistance rene 2 3 3 L ETO T exeo aset axe Fi ipa ue ERU EE 3 1 3 Introd UOM eed Ere 3 3 3 2 Disassembly and Reassembly 3 3 3 3 Sinn 3 7 3 4 Performance 3 7 3 5 OC edet 3 8 4 Replaceable Parts 4 1 4 1 ISS e FT 4 3 4 2 How To Obtain Parts dete testes dalla 4 3 4 3 NN 4 3 4 4 Warranty and Service Centers ee eee eee 4 4 List of Tables Table Title Page 151 Specifications needed reru ett Ohne lee aia lee 1 2 2 1 Electrical Components on Main PCA 2 4 2 2 PR Pinout KT TT 2 5 3 1 Required 3 7 3 2 Performance Tests for Fluke 10 3 9 3 3 Performance Tests for Fluk2. Circuit and Function Component Designator s Analog Measurement IC U1 Microcomputer IC U2 Input Divider and Ohms Reference Resistor Network 71 Input Divider Coupling Capacitor C14 J2 Input Receptable Voltage Sense Resistor R17 J1 Input Receptable Voltage Sense Resistor R14 Reference Voltage for Volts Measurements VR1 R4 R5 R6 R26 A D Converter Integrate Capacitor C2 A D Converter Autozero Capacitor C1 A D Converter Gain Resistors R1 R3 R15 Active Filter Components R7 R8 C5 C6 Passive Filter Components R9 C7 AC to DC Converter Gain Resistors R11 R12 R13 AC to DC Converter AC Coupling Capacitor C8 Bias Current Setting Resistor R2 DGND VSS Voltage Setting Resistors R10 R24 Power Supply Bypass Capacitors C3 C15 Reverse Battery Protection CR1 System Clock Y1 VCHEK Input Current Limiters R16 R18 R29 VCHEK input Positive Temp Coef Thermistor RT1 VCHEK Input Voltage Clamp Circuit Q1 Q2 CR2 R28 VCHEK Input Fusible Resistor R19 Microcomputer Reset Circuit R23 R25 C10 C13 On Off and VCHEK Select Slide Switch 51 LS1 Beeper Current Limiter R22 Slide Switch Protection E1 Switch Sense Bypass Capacitor C9 Input Divider Bypass Capacitor C16 Zero Ohm Jumpers R20 R21 R27 Theory of Operation VCHEK Input Resistance Table 2 2 U1 Pinout Table Pin Pin Name Descripti
3. Lyd Q13IHS dO4 o A gt a 2 6 200 XOL Siu MZ94 SOLSISSY 37181503 SI 618 111 Figure 4 5 Fluke 12 Schematic 4 14 4 Replaceable Parts and Schematics Warranty and Service Centers 255 193135 39Nvu 25 3oNvilOVdvO 26 sue XwW NIN 25 5 7 25 FLUKE 12 1201 12 Figure 4 5 Fluke 12 Schematic cont 4 15 10 11 12 Multimeters Service Manual FEDERAL SUPPLY CODES FOR MANUFACTURES 01295 Texas Instruments Inc Semiconductor Group Dallas TX 04222 AVX Corp AVX Ceramics Div Myrtle Beach SC 04713 Motorola Inc Semiconductor Products Sector Phoenix AZ 05347 Ultronix Inc Tel Labs Grand Junction CO 09214 General Electric Co Semiconductor Products Dept Auburn NY 0 392 Shin Etsu Silicones of America S P America Torrance CA 14936 General Instrument Corp Power Semiconductor Div Hicksville NY 17856 Siliconix Inc Santa Clara CA 23237 IRC Inc Microcircuits Div Philadelphia PA 25403 Philips Circuit Assemblies Formerly Amperex Electronic Corp Slatersville RI 27014 National Semiconductor Corp Santa Clara CA 32997 Bourns Inc Trimpot Div Riverside CA 51406 Murata Erie No America Inc
4. WARNING THIS INSTRUMENT CONTAINS A FUSIBLE RESISTOR PN 887034 TO ENSURE SAFETY USE EXACT REPLACEMENT ONLY 4 4 Table 4 1 Final Assembly Replaceable Parts and Schematics Warranty and Service Centers REF DESCRIPTION FLUKE MFRS MANUFACTURERS TOT DES STOCK SPLY PARTNUMBER OR QTY NO CODE GENERIC TYPE T E AEN S BT 1 BATTERY 9V 0 15MA 696534 59717 216 1 H 1 4 SCREW PH P THD FORM STL 5 14 750 832246 COMMERCIAL 4 J3 CONN ELASTOMERIC LCD TO PWB 867247 0K392 867247 1 2 050 L J4 CONN ELASTOMERIC SWITCH TO 867242 0K392 867242 1 PWB 500 L MP 2 CASE TOP 89536 111 DEC AL WINDOW 89536 1 2 4 DECAL CASE 89536 113 MP 5 ACTUATOR SWITCH 879023 89536 879023 1 MP 6 SUPPORT SWITCH 879031 89536 879031 1 MP 7 SHIELD TOP FORMED 899380 89536 899380 1 MP 8 CASE BOTTOM 89536 1 14 9 SHIELD BOTTOM 89536 1 14 10 SHOCK ABSORBER 878983 89536 878983 1 MP 11 FOOT NON SKID 885884 89536 885884 1 MP 12 TEST LEADS 855742 89536 855742 1 13 DECAL WARNING FOREIGN 897843 89536 897843 1 LANGUAGE 2 SWITCH ASSEMBLY 89536 1 5 TM 1 USERS MANUAL ENGLISH FLUKE 10 900196 89536 900196 1 TM 2 USERS MANUAL ENG INTL FLUKE 10 900204 89536 900204 1 3 UERSS MANUAL ENGLISH FLUKE 11 12 900191 89536 900191 1 TM 4 USERS MNL GER ITA JPN FL 11 12 900209 89536 900209 1 TM 5 USER
5. CRCW1206 1004FB 5 23 28 100PPM 1206 10 1 RES CERM 309K 1 125W 876201 91637 CRCW1206 3093FB 1 100 1206 11 12 RES MF 30 1K 0 1 0 125W 887161 59124 MF50D3012B 2 100 13 RES ME 27 1K 0 1 0 125W 100PPM 876289 59124 MF50D2712B 1 14 15 4 RES CERM 10K 5 125W 746610 91637 CRCW1206 1002JB 2 200PPM 1206 16 18 4 RES CERM 470 5 3W 100PPM 887117 23237 GS 3 470 5 2 2 R17 1 RES CERM 1M 596 1W 655175 19647 MS214 105 5 1 2 200 19 RES MF 500 0 20 887034 91637 91637 CMF 65 89 4500 1 2 100PPM FLMPRF FUS R 20 27 4 0 05 MAX 125W 1206 810747 91637 CRCW1206 0RO0B 2 4 4 7 10 11 12 Multimeters Service Manual 4 8 Table 4 2 A1 Main PCA cont N DES DESCRIPTION STOCK SPLY PARTNUMBEROR NO CODE GENERIC TYPE 5 21 RES JUMPER 0 02 0 25W 682575 91637 FRJ 55 1 22 29 4 RES CERM 300 5 125W 746362 91637 CRCW1206 3000JB 2 200PPM 1206 R 24 RES CERM 487K 1 125W 887112 91637 CRCW1206 4873FB 1 100PPM 1206 R25 RES CERM 2 2M 5 125W 811778 91637 CRCW1206 2204JB 1 200PPM 1206 R 26 RES CERM 100K 1 125W 769802 91637 CRCW1206 104FB 1 100PPM 1206 RT 1 THERMISTOR POS 1 1K 20 25 C 867192 54583 911 67 112 07 1 2 1 SWITCH SLIDE 3 POSITION 5 PIN 868117 79727 868117 1 U 1 ARTIC ASSE
6. CSA C22 2 No 231 and VDE 0411 and IEC 1010 overvoltage category Complies with FCC Part 15 Class and VDE 0871B Function Range Resolution Accuracy 50 to 400 Hz Model 10 Models 11 12 Volts AC 4000 1 mV 2 9 3 1 9 3 4 000V 0 001V 2 9 3 1 9 3 40 00V 0 01V 2 9 3 1 9 3 400 0V 0 1V 2 9 3 1 9 3 600V 1V 2 9 3 1 9 3 Volts DC 4000 mV 1 mV 1 5 2 0 9 2 4 000V 0 001V 1 5 2 0 9 2 40 00V 0 01V 1 5 1 0 9 1 400 0V 0 1V 1 5 1 0 9 1 600V 1V 1 5 1 0 9 1 Resistance 400 00 0 10 1 5 2 0 9 2 4 000 kQ 0 001 kQ 1 5 1 0 9 1 40 00 kQ 0 01 kQ 1 5 1 0 9 1 400 0 kQ 0 1 1 5 1 0 9 1 4 000 MQ 0 001 MQ 1 5 1 0 9 1 40 00 MQ 0 01 MQ 1 9 3 1 5 3 Capacitance 1 000 uF 0 001 uF NA 1 9 2 10 00 uF 0 01 uF NA 1 9 2 100 0 uF 0 1 uF NA 1 9 2 1000 uF 1 uF NA 1 9 2 10000 uF 10 uF 10 90 Typical Aabe 2 000V 0 001V 1 5 2 0 9 2 es The 4000 mV range can only be entered in the manual range mode Use the 4000 mV range with accessories The beeper is guaranteed to come at lt 25Q and turn off at 32509 The meter detects opens or shorts of 250 us or longer Introduction and Specifications 1 Specifications Table 1 1 Specifications cont Function Overload Input Impedance Common Mode Normal Mode Protection Nominal Rejection
7. Symrna GA 54583 TDK Electronics Corp Port Washington NY 56289 Sprague Electric Co Nashua NH 59124 KOA Speer Electronics Inc Bradford PA 59717 Eveready Battery Co Inc Asheboro 61429 Fox Electronics Fort Myers FL 62786 Hitachi America Ltd Semiconductor amp IC Div San Jose CA 68919 Inter Technical Group Inc The Wima Division Elmsford NY 71400 Bussman Now Magnum Div of Cooper Industries Inc St Louis MO 83553 Associated Spring Barnes Group Inc Gardena CA 89536 John Fluke Co Inc Everett WA 91637 Dale Electronics Inc Columbus NE 91984 Maida Development Co Hampton VA USA 1 800 825 9810 INTERNATIONAL Argentina Coasin S A Virrey del Pino 4071 DPT E 61 1430 CAP FED Buenos Aires TEL 54 1 522 5248 FAX 54 1 551 1767 Australia Phillips Customer Support Scientific and Industrial 23 Lakeside Drive Tally Ho Technology Park East Burwood Victoria 3151 Phillips Customer Support Scientific and Industrial Block F Centrecourt 34 Waterloo Road North Ryde N S W 2113 TEL 61 2 888 8222 FAX 61 2 888 0440 Austria Fluke Austria GmbH Unternehmensbereich Prof Systeme Gutheil Schoder Gasse 10 A 1102 Wein TEL 43 222 60101x1299 FAX 43 222 603 2165 Belgium Phillips Professional System S A Fluke Belgium N V S A T amp M Customer Support 80 Rue des Deux Gares B 1070 Brussels TEL 32 2 525 7037 FAX 32 2 525 64
8. 8953 Dietikon TEL 41 1 745 2244 FAX 41 1 745 2240 Taiwan Schmidt Electronics Corp 5th Floor Cathay Min Sheng Commercial Building 344 Min Sheng East Road Taipei TEL 886 2 501 3468 FAX 886 2 502 9692 Thailand Measuretronix Ltd 2102 31 Ramkamhaeng Road Bangkok 10240 TEL 66 2 375 2733 375 2734 FAX 66 2 374 9965 Turkey Turk Phillips Ticaret A S Inonu Caddesi 78 80 Posta Kutusu 504 Beyoglu Instanbul TEL 90 1 143 5891 United Kingdom Fluke U K LTD Customer Support Colonial Way Watford Hertfordshire WD2 4TT TEL 44 923 240511 FAX 44 923 225067 Uruguay Coasin Uruguaya S A Casilla de Correo 1400 Libertad 2529 Montevideo TEL 598 2 789 015 FAX 598 2 797 338 Venezuela Coasin C A Calle 9 Con Calle 4 Edif Edinurbi Apartado de Correos Nr 70 136 Los Ruices Caracas 1070 A TEL 58 2 241 0309 241 1248 FAX 58 2 241 1939
9. 94 21 8L Si 11016 8 4 9 5 V ana08f eps Figure 4 3 Fluke 10 Schematic cont 4 11 10 11 12 Multimeters Service Manual FLUKE 11 1201 SWHO 170A 10 9 wLavea we a 2 N gt gt i 2 8 o o 1531454 gt LISA oaov WY AY BINS 01108 dOY AY NOWWOD WOV V OO0v NI SSA Iva ova Q 31IHS 401 NOL Siu NZOL ANA ty 1N3W30v 43H 419vX3 HOLSISd3H 31816034 SI 614 ana09f eps Figure 4 4 Fluke 11 Schematic 4 12 18 19 20 21 22 23 24 25 26 27 28 9 10 11 12 13 14 Replaceable Parts and Schematics Warranty and Service Centers Figure 4 4 52 CAPACITANCE SCLK SOUT 2 1 Fluke 11 Schematic cont AZEND FLUKE 11 1201 2 of 2 10 4 10 11 12 Multimeters Service Manual 1 of 2 FLUKE 12 1201 SWHO 170A 75444441 gt gt lt a lt lt a a 5 e viva 2 1 O 31HS WOl10H oviva 200
10. CURRENT IN MANUAL DOUBLE INSULATION FUSE FOR PROTECTION AGAINST ELECTRIC SHOCK Before using the meter read the following safety information carefully In this manual WARNING is reserved for conditions and actions that pose hazard s to the user CAUTION is reserved for conditions and actions that may damage your meter e Avoid working alone e Follow all safety procedures for equipment being tested e Inspect the test leads for damaged insulation or exposed metal Check test lead continuity Damaged leads should be replaced Be sure the meter is in good operating condition Select the proper function for your measurement To avoid electrical shock use caution when working above 60V dc or 30V ac RMS Disconnect the live test lead before disconnecting the common test lead S the power and discharge high voltage capacitors before testing Q and e When mange current measurement turn the circuit power off before connecting the meter in the circuit e Check meter fuses before transformer secondary or motor winding An open fuse may allow high voltage build up which is potentially azardous e Use clamp on probes when measuring circuits exceeding 10 amps e When servicing the meter use only the replacement parts specified s Do not allow meter to be used if it is damaged or if its safety is impaired Table of Contents Chapter Title Page 1 Introduction and Specifications
11. Ratio Rejection 1 Unbalance Volts DC 600V rms gt 10 MQ lt 100 pF gt 100 dB at dc 50 Hz gt 50 dB at 50 Hz amp LOZ gt 2 60 HZ 60 HZ lt 200 pF Volts 600V rms gt 5 MQ 100 pF CHEK gt 60 db dc to 60 Hz amp LoZ gt 2 kQ lt 200 pF ac coupled Resistance Open Circuit Full Scale Voltage To Short Circuit Test Voltage 4 0 MQ 40 Current 600V rms lt 1 5V de 450 mV 1 5V dc 500 uA dc Diode 600V rms 2 4 3 OV dc 2 400V dc 0 95 mA typical B 3 x 106 V Hz Maximum X Models 11 and 12 only MIN MAX Recording with Elapsed Time Model 12 Only Specified accuracy of the measurement function 12 digits for changes gt 200 ms in duration 40 digits in ac Typical 100 ms response to 80 Elapsed Time Resolution Accuracy 0 to 100 hours 1 minute 0 3 typical 99 59 Continuity Capture Model 12 Only Detects opens or shorts of 250 us or longer 2 1 2 3 2 4 2 5 Chapter 2 Theory of Operation Title Page TT 2 3 Theory of Operation 4 eee E e Regen 2 3 Analog Measurement 01 sees 2 3 Microcomputer IC 02 ETH 2 3 VCHEK Input Resistance 2 1 10 11 12 Multimeters Service Manual 2 2 2 1 2 2 2 4 Theory of Operation 2 Introduction Introduction Section 2 provides a basic theory of operation for the Series 10 Multimeters Electrical components on the printed circuit assembly A1 Ma
12. THE CASE CAUTION To avoid contamination from the fingers handle the pca by the edges or wear gloves PCA contamination can cause failures in humid environments This meter contains components that can be damaged by static discharge To avoid damaging these components when servicing the meter take precautions indicated on the Static Awareness at the beginning of Section 3 Referring to Figure 3 1 as necessary disassemble the meter as follows A Phillips head screwdriver and small flat blade screwdriver are required 1 Remove the test leads and set the slide switch to OFF 2 Remove the Phillips head screws 1 4 from the case bottom MP8 3 Separate the case top MP2 from the case bottom 4 TO REPLACE THE BATTERY Lift the battery from the case bottom and insert a new 9V battery NEDA 1604 6F22 or 006P Be sure the positive and negative battery posts are oriented correctly 5 REMOVE THE 1 Insert a small flat blade screwdriver between the edge of the case top and the pca where shown in Figure Gently unsnap a side of the case top from the pca Repeat on the other side of the pca Unsnap the case from the top of the pca last 6 LIFT THE PCA FROM THE CASE TOP BY ITS EDGES If the elastomeric contact strips 33 J4 for the switch assembly 52 and LCD U3 are stuck to the remove them without touching the conductive edges TO REINSERT THE PCA Important First make sure that the slide switch act
13. order directly from the Fluke Parts Dept by calling 1 800 526 4731 Parts price information is available from the John Fluke Mfg Co Inc or its representatives Prices are also available in a Fluke Replacement Parts Catalog which is available on request In the event that the part ordered has been replaced by a now or improved part the replacement will be accompanied by an explanatory note and installation instructions if necessary To ensure prompt delivery of the correct part include the following information when you place an order Instrument model and serial number Description as given under the DESCRIPTION heading Quantity Reference designator Part number and revision level of the pca containing the part Fluke stock number Schematics Figures 4 3 through 4 5 are schematics of the Series 10 Multimeters 4 3 10 11 12 Multimeters Service Manual 4 4 Warranty and Service Centers The Series 10 Multimeters are warranted for two years The warranty is printed behind the title page of this manual For service information in the USA call 1 800 825 9810 Outside the USA contact a Fluke service center A list of service centers is at the end of Section 4 NOTE This instrument may contain a Nickel Cadmium battery Do not mix with the solid waste stream Spent batteries should be disposed of by a qualified recycler or hazardous materials handler Contact your authorized Fluke service center for recycling information
14. 0 Right 0 984 1 016 22 40 00 kQ 35 Right 34 46 35 54 23 400 0 kQ 100 kQ Right 98 4 101 6 24 4 000 MQ 2 9 MQ Right 2 855 2 945 25 40 00 MQ 35 MQ Right 34 30 35 70 Maintenance Calibration 3 Table 3 3 Performance Tests for Fluke 11 and 12 Test Meter Range Input To Slide Switch Display Display No Meter Position Minimum Maximum 1 4 000V AC OV Center 0 000 0 003 2 4 000V AC MIN MAX OV Center 0 000 0 040 3 4 000V AC 10 mV 50 Hz Center 0 007 0 013 4 4 000V AC 10 mV 400 Hz Right 0 007 0 013 5 4 000V AC 3 5V 50 Hz Right 3 430 3 570 6 4 000V AC 3 5V 400 Hz Center 3 430 3 570 7 40 00V 35 50 Hz Center 34 30 35 70 8 40 00V 35 400 Hz Right 34 30 35 70 9ttt 400 0V AC 350V 80 Hz Right 343 0 357 0 10 600V AC 600V 400 Hz Center 586 614 11 4 000V DC MIN MAX UV Center 0 012 0 012 12 4 000V DC OV Right 0 002 0 002 13 40 00V DC 20 mV DC Right 00 01 00 03 14 400 0V DC 200mV DC Center 000 3 000 1 15 4 000V DC 3 5V Center 3 466 3 534 16 40 00V DC 35V DC Center 35 33 34 67 17 400 0V DC 100V DC Center 99 0 101 0 18 600V DC 600V DC Center 606 594 19 Continuity 2V DC Right 1 980 2 020 20 Continuity 3 43V DC Right 3 3971 3 4631 21 Continuity 0 5V DC Right 0 5071 0 4931 22 400 02 0 00 Right 0 0 0 2 23 400 00 1 00 Right 0 8 1 2 24 400 02 350 00 Right 346 6 353 4 25 4 000 kQ 1 0 KQ Right 0 990 1 010 26 40 00 kQ 35 Right 34 67 35 33 27 400 0 kQ 100 kQ
15. 25V X7R 1206 747287 04222 12063C104KATO60B 1 13 C8 TA 3 3UF 20 16V 3528 876552 56289 293D335X0016B2T 1 C9 CAP CER 0 022UF 10 50V X7R 747279 04222 12065 223 60 1 1206 C 10 CAP AL 22UF 20 10V SOLV 887245 62643 KRG10VB22RM4X7RP 1 PROOF C14 CAP POLYES 0 01UF 10 1000V 822361 68919 MKS4 01 1000V 10 1 2 15 470 20 10 7343 867580 89536 867580 1 C16 CAP CER 10PF 20 50V COG 721589 04222 SR595A100MAA 1 CR 1 DIODE SI 100 1 0 AMP 912451 04713 1N4002 1 CR TY DIODE SI DUAL BV 50V 851659 04713 MBAV74T1 1 100 50 23 4 DIODE SI BV 70 0V 742320 8 233 99 1 IO 50MA DUAL SOT23 E1 SURGE PROTECTOR 3750V 420 867361 91984 91984 100 HT1 1 J1 2 RECEPTACLE INPUT 878988 89536 878988 2 151 TRANSD PIEZO 20MM 876995 59096 59096 KBS 20DB 2T 5 1 Q1 1 TRANSISTOR SI NPN SELECT 821637 04713 SMBT1388LT1 1 IEBO SOT 23 Q2 1 TRANSISTOR SI PNP SELECT 887179 04718 SMBT1531LT1 1 ICER SOT 23 R1 1 RES CERM 162K 196 125W 876198 91637 CRCW1206 1623FB 1 2 100 1206 R2 RES MF 332K 196 0 125W 100PPM 655217 59124 MF50D3323F 1 R3 RES MF 23 4K 0 1 0 125W 876292 59124 MF50D2342B 1 100 R4 RES VAR CERM 25K 25 0 2W 876300 80294 80294 3306 1 253 1 R5 RES CERM 43 2K 1 125W 887109 91637 CRCW1206 4322FB 1 100 1206 R6 1 RES CERM 226K 1 125W 876524 91637 CRCW1206 2263FB 1 100PPM 1206 7 9 191250 836387 91637
16. 3 for the Fluke 11 or 12 put the meter in the function and range shown for test 1 Maintenance 3 Calibration Table 3 1 Required Equipment Equipment Minimum Specifications Recommended Model DMM Calibrator DC Voltage 0 600V Fluke Models 5700A 5100 or Accuracy 0 25 equivalent AC Voltage 0 600V Accuracy 0 5 Frequency 50 400 Hz Decade Resistor Resistance 1 0 40 MQ General Reisistance RDS 77B Accuracy 0 25 and 41B Decade Capacitor Capacitance 0 1 000 uf GenRad 1412 BC Accuracy 0 5 3 Apply the input from the appropriate source The reading on the display should be within the MINIMUM and MAXIMUM values shown in 4 Test the remaining functions and ranges 3 5 Calibration To ensure that the meter performs to specifications calibrate it annually using the following procedure 1 Set the calibrator for dc Put the meter in the 4 000V dc range 2 Connect the calibrator to the and COM jacks on the Meter 3 Apply an input of 4 000V 0 25 The meter display should read between 3 997 4 003V If it does not adjust R4 see Figure 3 3 as follows To adjust R4 1 Remove any input signals to the meter 2 Remove the four screws on the back and separate the case bottom and case top Notice that when you do so the battery remains in the case bottom and power to the meter is disconnected 3 Observing correct polarity connect a 9V battery to the battery contacts us
17. 83 Brazil Hi Tek Electronica Ltda Al Amazonas 422 Alphaville CEP 06400 Barueri Sao Paulo TEL 55 11 725 5822 FAX 55 11 421 5032 Canada Fluke Electronics Canada Inc 400 Britannia Road East Unit 1 Mississauga Ontario L4Z 1X9 TEL 416 890 7600 FAX 416 890 6866 Chile Intronsa inc Casilla 16150 Santiago 9 TEL 56 2 232 1886 232 4308 FAX 56 2 232 2694 Replaceable Parts and Schematics Warranty and Service Centers SERVICE CENTERS China Fluke Service Center Room 2111 Scite Tower Jianguomenwai Dajie Beijing 100004 PRC TEL 86 1 512 3435 or 6351 FAX 86 1 512 3437 Colombia Sistemas E Instrumentacion Ltda Carrera 21 NO 39A 21 OF 101 Ap Aereo 29583 Bogota TEL 57 1 287 5424 FAX 57 1 287 2248 Costa Rica Electronic Engineering S A P O Box 4300 1000 San Jose TEL 506 53 3759 FAX 506 25 1286 Denmark Fluke Denmark A S T amp M Customer Support Strandlodsvej 4B DK 2300 Copenhagen TEL 45 32 882531 FAX 45 32 883939 Ecuador Proteco Coasin Cia Ltda P O Box 17 03 228 A Av 12 de Octubre 2449 y Orellana Quito TEL 593 2 230283 or 520005 FAX 593 2 561980 Egypt Phillips Egypt 10 Abdel Rahman el Rafei st el Mohandessin P O Box 242 Dokki Cairo TEL 20 2 490922 Finland Fluke Finland Oy Sinikalliontie 3 P O Box 11 SF 02631 ESPOO TEL 358 0 50261 FAX 358 0 529558 France Fluke France S A Commerciale Science et Industrie T amp M
18. Customer Support 105 Rue de Paris BP 62 93002 Bobigny Cedex TEL 33 1 4942 8049 FAX 33 1 4942 8155 Germany Fluke GmbH Service VSF Untemehmensbereich Elektronik fuer Wissenschaft und Industrie Oskar Messter Strasse 18 0 8045 Ismaning Munich TEL 49 89 9605260 FAX 49 89 9605270 Greece Phillips S A Hellenique 15 25th March Street 177 78 Tavros 10210 Athens TEL 30 1 489 4911 FAX 30 1 481 5180 Hong Kong Schmidt amp Co Ltd 1st Floor 323 Jaffe Road Wanchai TEL 852 9223 5623 FAX 852 834 1848 ireland Republic of Fluke U K LTD Customer Support Colonial Way Watford Hertfordshire WD2 4TT U K TEL 44 923 240511 FAX 44 923 225067 India Hinditron Services Pvt Inc 33 44 Raj Mahal Vilas Extension 8th Main Road Bangalore 560 080 TEL 91 812 345 734 FAX 91 812 345 022 Hinditron Services Pvt Ltd 1st Floor 17 B Mahal Industrial Estate Mahakali Road Andheri East Bombay 400 093 TEL 91 22 630 0043 FAX 91 22 837 0087 Hindtron Services Pvt Ltd 204 206 Hemkunt Tower 98 Nehru Place New Delhi 110 019 TEL 91 11 643 3675 FAX 91 11 642 9118 Hinditron Services Pvt Ltd Field Service Center Emerald Complex 1 7 264 5th Floor 114 Sarojini Devi Road Secunderabad 500 003 TEL 91 842 844033 Indonesia P T Daeng Brothers Phillips House J1 Rasuna Said Kav 3 4 Jakarta 12950 TEL 62 21 520 1122 FAX 62 21 520 5189 Israel R D T Electronics Engineering L
19. D make sure that all connector contact points are clean CAUTION Do not touch the conductive edges of the elastomeric strips or the contacts on the switch assembly If they are contaminated clean them with isopropyl alcohal Reassembling the meter is the reverse of disassembling it After the meter is reassembled execute the PERFORMANCE TESTS to confirm that the meter is working properly Cleaning CAUTION To avoid damaging the meter do not use aromatic hydrocarbons or chlorinated solvents for cleaning These solutions will react with the plastics used in the instruments Do not get the LCD wet To clean the case wipe it with a cloth lightly dampened with water and a mild detergent Wash the pca with isopropyl alcohol or hot deionized water and a soft brush Do not use detergent of any kind for cleaning the pca The pca must be completely dry before the meter is reassembled Dry the pca with clean dry air at low pressure lt 20 psi then bake it at 50 for 2 hours Performance Tests WARNING TO AVOID SHOCK DO NOT EXECUTE THE PERFORMANCE TESTS PROCEDURES UNLESS THE METER IS FULLY ASSEMBLED Use the PERFORMANCE TESTS to confirm that the meter is working properly If the meter fails any of these tests it needs calibration see CALIBRATION or repair The equipment required is specified in Table 3 1 1 Connect the calibrator to the and COM jacks on the meter 2 Refering to Table 3 2 for the Fluke 10 or Table 3
20. Disassembly and reassembly Section 3 Performance tests Section 3 Calibration Section 3 Illustrated parts lists and schematic diagram Section 4 Refer to the Users Manual for operating instructions Specifications Specifications are in Table 1 1 Accuracy is specified for a period of one year after calibration at 18 C to 28 C 64 F to 82 F with relative humidity to 90 AC conversions are ac coupled average responding and calibrated to the rms value of a sine wave input Accuracy specifications are given as of reading number of least significant digits 10 11 12 Multimeters Service Manual 1 4 Table 1 1 Specifications Maximum Voltage Between any Terminal and Earth Ground Display Operating Temperature Storage Temperature Temperature Coefficient Relative Humidity Battery Type Battery Life Shock Vibration Size HxWxL Weight Safety EMI Regulations 600V ms 3 3 4 digits 4000 counts updates 4 sec 10 C to 50 C 30 C to 60 C indefinitly to 40 C for 100 hrs 0 1 x specified accuracy C lt 18 C or gt 28 C 0 to 90 10 C to 35 C 0 to 70 35 C to 50 C 9V NEDA 1604 or IEC 6F22 650 continious hours with alkaline 450 continious hours with carbon zinc 1 meter shock Per MIL T 28800D for a Class 3 Instrument 1 35 in x 2 75 in x 5 55 in 3 46 cm x 7 05 cm x 14 23 cm 10 oz 286 g Designed to Protection Class Il requirement of UL1244 ANSI ISA S82
21. FLLIKE 10 11 12 Muftimeters Service PN 900824 March 1992 Rev 1 7 93 1992 1993 Fluke Corporation All rights reserved Printed in USA All product names are trademarks of their respective companies WARRANTY Fluke warrants to the original product purchaser that each product it manufactures will be free from defects in material and workmanship under normal use and service The warranty period is controlled by the warranty document furnished with each product and begins on the date of shipment Fluke s warranty does not apply to fuses batteries CRTs or any product which in Fluke s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling To obtain warranty service in the USA call 1 888 99 FLUKE 1 888 993 5853 Outside the USA contact your nearest Fluke sales or service representative Fluke assumes no risk for damage in transit Fluke will at its option repair or replace the defective product free of charge or refund the purchase price However if Fluke determines that the failure was caused by misuse alteration accident or abnormal condition of operation or handling you will be billed for the repair and the repaired product will be returned to you transportation prepaid THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PUR
22. ICS a a ror E E PIER EP 4 3 Warranty and Service Centers eee eee 4 4 4 1 10 11 12 Multimeters Service Manual 4 2 4 1 4 2 4 3 Replaceable Parts and Schematics 4 Introduction Introduction This section contains an illustrated list of replaceable parts and a schematic drawing for Series 10 Multimeters Parts are listed by assembly alphabetized by reference designator Parts unique to a specific model are identified Each assembly is accompanied by an illustration showing the location of each part and its reference designator The parts lists give the following information e Reference designator e An indication if the part is subject to damage by static discharge e Description e Fluke stock number e Manufacturers supply code for manufacturers code to name list at end e ofthis section e Manufacturers part number or generic type Total quantity e Any special notes 1 factory selected part e Manufacturers part number or generic type Total quantity e special notes 1 factory selected part CAUTION A 7 symbol indicates a device that may be damaged by static discharge How To Obtain Parts Electrical components may be ordered directly from the manufacturer by using the manufacturers part number or from the John Fluke Mfg co Inc and its authorized representatives by using the part number under the heading FLUKE STOCK NO In the U S
23. MBLY TESTED 858472 89536 858472 1 U2 1 1 5 4 BIT MPU LCD 866913 33297 UPD75304GF XXX 3B9 1 CNTRLR 80PN VR 1 1 IC 1 23V 150 PPM T C BANDGAP 634451 12040 LM385Z 1 2D26Z 1 V REF XBT 1 2 CONTACT BATTERY 897777 89536 897777 2 Y 1 RESONATOR CERAMIC PIEZOELEC 876024 54583 FCR2 1MC3 1 2 10MHZ Z1 RES NET THK FILM TESTED 872234 89536 872234 1 Notes 1 Static sensitive part 1 FOR FLUKE MODEL 10 QTY 3 C4 11 13 FOR FLUKE MODEL 11 QTY 3 C4 12 13 FOR FLUKE MODEL 12 QTY 2 C4 13 2 WARNING SAFETY RELATED COMPONENTS USE EXACT REPLACEMENT ONLY m XBT R I HANDSTUFFED SIDE SURFACE MOUNT SIDE Figure 4 2 A1 Main PCA Components Replaceable Parts and Schematics Warranty and Service Centers ana06f eps 4 10 11 12 Multimeters Service Manual ZOOPNL 1 Gig Ansa ee KAYR Wh 282 wv Ziy 5 01108 Q131HS 401 Siu XL Wear ANN iu 12 LIN3W32v ld3H WOLSTS3Y 31815034 V SI 614 FLUKE 10 1201 N 52 SWHO 110 cx ana07f eps Figure 4 3 Fluke 10 Schematic 4 10 4 Replaceable Parts and Schematics Warranty and Service Centers FLUKE 10 1201 1005 215 241 12 92 SZ vz EZ ZZ 1 02 6l
24. POSE OR USE FLUKE WILL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSS OF DATA WHETHER IN CONTRACT TORT OR OTHERWISE Some states do not allow the exclusion or limitation of incidental or consequential damages or implied warranty periods so the above limitations may not apply to you Other rights may vary from state to state Fluke Corporation Fluke Europe B V P O Box 9090 P O Box 1186 Everett WA 98206 9090 5602 BD Eindhoven U S A The Netherlands MULTIMETER SAFETY The Fluke 10 11 12 Multimeters have been designed and tested according to IEC Publication 348 Safety Requirements for Electronic Measuring Apparatus This manual contains information and warnings which must be followed to ensure safe operation and retain the meter in safe condition Use of this equipment in a manner not specified herein may impair the protection provided by the equipment These mutimeters comply with part 15 of the FCC Rules Operation is subject to the following two conditions 1 these multimeters may not cause harmful interference and 2 these multimeters must accept any interference received including interference that may cause undesired operation Some common international electrical symbols used in this manual are shown below AC ALTERNATING DANGEROUS CURRENT 1 VOLTAGE DC DIRECT ND 1 EARTH GROU
25. Phillips Customer Support Scientific amp Industrial Private Bag 41904 St Lukes 2 Wagener Place Mt Albert Auckland 3 New Zealand TEL 64 9 894 4160 FAX 64 9 849 7814 Norway Fluke Norway A S Sandstuveien 70 Postboks 1 Manglerud N 0680 OSLO6 TEL 47 2 748 408 FAX 47 2 741 907 Peru Importaciones amp Representaciones Electronicas S A JR Pumacahua 955 Lima 11 Peru TEL 51 14 23 5099 FAX 51 14 27 1324 SERVICE CENTERS CONT Philippines Spark Electronics Corp P O Box 610 Greenhills Metro Manila 1502 TEL 63 2 700 621 FAX 63 2 721 0491 Portugal Phillips Portuguese S A IE Division T amp M Department Apartado 300 2795 LINDA A VELHA TEL 351 1 410 1000 FAX 351 1 410 7838 or 7986 Republic of South Africa South African Phillips Pty Ltd BOX 7703 Johannesburrg 2000 TEL 27 11 889 3578 FAX 27 11 889 3279 Singapore John Fluke Mfg Co Inc Singapore Representative Office 460 Alexandra Road 27 03 PSA Building Singapore 0511 TEL 65 276 5161 FAX 65 334 1698 Spain Fluke Ib rica T amp M Customer Support Depto Tecnico Instrumentacion c Martinez Villergas 2 28027 Madrid TEL 34 1 326 7146 FAX 34 1 326 0668 Sweden Fluke Sweden AB T amp M Customer Support Tegeluddsvaegen 1 6 115 84 Stockholm TEL 46 8 782 1300 FAX 46 8 667 4781 Switzerland Fluke Switzerland AG T amp M Customer Support Test and Messtechnik Riedstrasse 12 Postfach 360 CH
26. Right 99 0 101 0 28 4 000 MQ 2 9 MQ Right 2 873 2 927 29 40 00 MQ 35 MQ Right 34 44 35 56 30 Q VCHEK 1 96V DC Right 1 9401 1 9801 1 000 0 Right 0 001 0 001 32 1 000 0 95uF Right 0 93 0 970 MIN MAX tests are for Fluke 12 only 55 Calibrator 50Q divider override T The dc volts annunciator must be Tt Conducting performance tests of the 4000 4 40 and 1 uF ranges tests no 22 23 24 25 26 31 and 32 verifies that the discrete and integrated circuitry needed to support the other capacitance ranges are working within specifications Therefore these tests indirectly verify that the meter will meet specification the 10 uF 100 uF 1000 uF and 10 000 uF ranges ttt In the V CHEK mode the UUT uses a low impedance thermistor approx 2 5 KQ for circuit protection and load testing referred to as lo Z input circuitry When using the 5100B or 5700A to drive the UUT with higher voltages avoid an overload current limit condition by gradually stepping the voltage up waiting two seconds between each step from 90 0V 120 0V 180 0V and 350 0V at 80 Hz each step 3 9 10 11 12 Multimeters Service Manual 3 10 ADJUST R4 FOR 3 997 4 003V DC CLIP TO BASE OF CONTACTS BATTERY Figure 3 3 Calibration Adjustment anao4f eps Chapter 4 Replaceable Parts and Schematics Title Page IntrodUuctOoB zs tere adeo tite a ee BSE 4 3 How To Obtaui recte 4 3 SCHEMAT
27. S MNL ENG FRN SPN FL 11 12 900212 89536 900212 1 U3 LCD 3 5 DIGIT MULTIPLEXED 855226 62786 855226 1 Notes 1 Static sensitive part 1 FOR FLUKE MODEL 10 ORDER FLUKE STOCK NUMBER 879015 FOR FLUKE MODEL 11 ORDER FLUKE STOCK NUMBER 879010 FOR FLUKE MODEL 12 ORDER FLUKE STOCK NUMBER 879007 2 FOR FLUKE MODEL 10 ORDER FLUKE STOCK NUMBER 890442 FOR FLUKE MODEL 11 ORDER FLUKE STOCK NUMBER 890447 FOR FLUKE MODEL 12 ORDER FLUKE STOCK NUMBER 890343 3 FOR FLUKE MODEL 10 ORDER FLUKE STOCK NUMBER 890467 FOR FLUKE MODEL 11 amp 12 ORDER FLUKE STOCK NUMBER 890335 4 ORDER BOTTOM CASE BOTTOM SHIELD ASSEMBLY FLUKE STOCK NUMBER 899385 5 FOR FLUKE MODEL 10 ORDER FLUKE STOCK NUMBER 874730 FOR FLUKE MODEL 11 ORDER FLUKE STOCK NUMBER 874727 FOR FLUKE MODEL 12 ORDER FLUKE STOCK NUMBER 874722 4 4 5 10 11 12 Multimeters Service Manual 4 6 Figure 4 1 Final Assembly Drawing ana05f eps Replaceable Parts and Schematics Warranty and Service Centers Table 4 2 A1 Main PCA N 0 FLUKE MFRS MANUFACTURERS TOT DES DESCRIPTION STOCK SPLY PARTNUMBEROR GENERIC C1 CAP TA 0 47UF 2095 35V 655035 56289 199D474X0035AG2 1 C2 5 7 CAP POLYES 0 022UF 10 50V 715268 37942 37942 185 2 223K50AA 4 C3 CAP TA 22UF 20 6V 6032 876545 56289 293D226X06R3C2T 1 C4 11 CAP CER 0 1UF 10
28. d a counter are controlled by a state machine Finally digital circuitry interfaces with U2 via a parallel address and bidirectional data bus Voltage is measured using a ratio comparison of the unknown voltage to the reference voltage REFI pin Resistance is calculated using a ratio comparison of the voltage across the unknown resistor to the voltage across a precision reference resistor with the same current in both Capacitance is measured by determining the amount of charge added for a given dc voltage change Microcomputer IC U2 U2 writes range settings and a d converter information to U1 U2 reads a d converter results and status information This includes the low battery check slide switch position continuity check and VCHEK data The microcomputer performs math operations on the raw data from U1 and configures it for the LCD U2 also reads pushbutton inputs Finally the 2 1 MHz clock signal at U2 is divided down to 131 kHz and sent to U1 CLK pin for the counter VCHEK Input Resistance As shown in Figure 2 1 the input resistance for the VCHEK function is non linear The data in the graph are for the volts dc function any range and are the steady state values obtained after the PTC thermister RT1 has stabilized The data also apply for the volts ac function 2 3 10 11 12 Multimeters Service Manual Table 2 1 Electrical Components on Main PCA
29. e 11 and 12 3 10 4 1 Final Assembly eue e ee eee teg red get be ig ad 4 5 4 2 INLMuatmn ete erae ete 4 7 iii Figure List of Figures Title Page Typical VCHEK Input Resistance with DC Volts Function Selected 2 7 Disassembled oo ete eiii 3 4 Removing and Reinserting the Printed Circuit Assembly 3 5 Calibration Adjustment ei cedes etti e hore teg roe HEBR oT 3 10 Binal Assembly Drawing iet eie eerte eee EVET e i 4 6 Al Mam PCA Comiponents doe tete t endete ile ete tige 4 9 Fluke TO Scheiatie tige edo RC egredere degere 4 10 Bluke 11 Schematic ise ette pce ted p eot ke 4 12 Fluke 12 Schematic eerie peciit Pe d Ee i ee ieee 4 14 Chapter 1 Introduction and Specifications Title Page 1 1 ISS eT 1 3 1 2 SPec Cat OMS 1 3 Introduction and Specifications Introduction 1 1 1 Introduction WARNING SERVICE PROCEDURES DESCRIBED HEREIN SHOULD BE PERFORMED BY QUALIFIED PERSONNEL ONLY TO AVOID ELECTRIC SHOCK PERFORM ONLY THOSE SERVICE PROCEDURES IN THIS INSTRUCTION SHEET The 10 Series Service Manual provides the information necessary to service the Fluke Model 10 Model 11 and Model 12 Multimeters The following information is provided in this publication Specifications Section 1 Basic theory of operation Section 2
30. in PCA are listed in Table 2 1 Refer to Figure 4 2 for the location of these components and Figures 4 3 through 4 5 for the schematic diagrams Theory of Operation The analog digital IC U1 implements the electrical measurement functions See Table 2 2 for pin names and descriptions The microcomputer U2 controls U1 the LCD U3 and the user interface Discrete components support U1 and U2 provide reference standards for measurements and provide input overload protection Analog Measurement IC U1 U1 implements the following analog functions a d converter ac to dc converter VCHEK circuitry Models 11 and 12 only active filter passive filter power supply range configuration circuitry signal routing circuitry beeper driver digital control circuitry and digital U2 interface circuitry The a d converter is a patented dual rate dual slope converter The dual rate conversion allows for MIN MAX Model 12 only and fast autoranging functions The ac to dc converter is full wave rectified and average responding The active and passive filters are two pole and one pole low pass filters respectively that are used for signal filtering prior to a d conversion The internal power supply generates a ground voltage nominally 3 relative to VSS Range configuration circuitry connects the 71 resistor network as needed for different ranges Routing circuitry connects the various signal conditioning circuits as needed The a d converter an
31. ing easy hook jumpers or alligator clip leads see Figure 3 3 NOTE To avoid stretching or bending the battery contacts connect leads to the base of the contacts as shown in Figure 3 3 Set the calibrator for OV dc Put the meter in the 4 000V dc range Connect the calibrator to the and COM jacks on the Meter Apply an input of 4 000 dc 0 25 Adjust R4 see Figure 3 3 so that the meter display reads between 3 997 4 003 E 3 7 10 11 12 Multimeters Service Manual 3 8 Table 3 2 Performance Tests for Fluke 10 Test No Meter Range Input To Meter Slide Switch Display Display Position Minimum Maximum 1 4 000V AC OV Center 0 000 0 003 2 4 000 AC 10 mV 50 Hz Center 0 007 0 013 3 4 000 AC 10 mV 400 Hz Center 0 007 0 013 4 4 000 AC 3 5V 50 Hz Center 3 395 3 605 5 4 000 AC 3 5V 400 Hz Center 3 395 3 605 6 40 00V AC 35V 50 Hz Center 33 95 36 05 7 40 00V AC 35 400 Hz Center 33 95 36 05 8 400 0V AC 350V 80Hz Center 339 5 360 5 9 600V AC 600V 400Hz Center 580 620 10 4 000V DC OV Center 0 002 0 002 11 40 00V DC 20 mV DC Center 00 01 00 03 12 400 0V DC 200 mV DC Center 000 3 000 1 13 4 000V DC 3 5V Center 3 445 3 555 14 40 00V DC 35V DC Center 35 54 34 46 15 400 0V DC 100V DC Center 98 4 101 6 16 600V DC 600V DC Center 610 590 17 Continuity 2V DC Right 1 968 2 032 18 400 00 0 00 Right 0 0 0 2 19 400 00 1 00 Right 0 8 1 2 20 400 00 350 00 Right 344 5 355 5 21 4 000 kQ 1
32. on No 1 READ L When low VSS data from addressed register can be read 2 ADR5 Most significant address bus line 3 ADR4 Bit 4 of parallel address bus 4 ADR3 Bit 3 of parallel address bus 5 ADR2 Bit 2 of parallel address bus 6 ADR1 Bit 1 of parallel address bus 7 ADRO Least significant address bus line 8 VSS Negative power supply voltage 3V relative to DGND 9 VDD Positive power supply voltage for analog only Vbat 3V VDD DGND 10 KO 1st a d gain resistor pin generally for de integrate 11 K1 2nd a d gain resistor pin generally for intergrate 12 K2 3rd a d gain resistor pin for autozero 13 AZ A D converter pin for autozero capacitor 14 INT A D converter pin for integrator capacitor 15 REFI 1 00V reference voltage for de integrate signal in volts 16 BIAS Pin for analog bias current generator reference resistor 17 REFH Connects 1 235V reference voltage to on chip circuits 18 BGND Not used 19 AFO Active filter high output pin 2 pole low pass filter 20 FAO Internal active filter node 21 FAI Internal active filter node 22 AFI Active filter high input pin 23 VSS Negative power supply voltage 3V reletive to DGND 24 PFO Passive filter low output pin 1 pole low pass filter 25 AVAOM Absolute value amp full wave rectified negative output pin 26 AVAOP Absolute value amp full wave rectified positive output pin 27 AVAM Absolute value amp inverting input summing node 28 ACBO AC buffer output 29 VSET Voltage divide
33. r sense for power supply 30 PSTEST Pin to disable on chip power supply for U1 testing 31 DGND Ground power supply pin connected to common digital ground 32 AGND Common input sense line No current flow Analog ground 33 CLAMP Op amp output voltage for Q2 clamp transister base drive 2 2 5 10 11 12 Multimeters Service Manual Table 2 2 U1 Pinout Table cont Pin Pin Name Description No 34 AMPS Shunt resistor sense pin Unused in Fluke series 10 35 ISRC Current source pin for continuity ohms and capacitance 36 SWS Slide switch position sense pin Internal pull down 37 OHMS Ohms sense resistor input pin Sense voltage at J2 38 VSS Negative power supply voltage 3V relative to DGND 39 ACV AC volts input pin from 10 MQ resistor 40 APVO DC volts input pin from 10 MQ resistor 41 DIVLO Input divider Z1 common low pin 42 APV1 10 to 1 voltage divider and 1 MQ reference resistor input 43 APV2 100 to 1 voltage divider and 100 kQ reference resistor input 44 APV3 1000 to 1 voltage divider and 10 kQ reference resistor input 45 APV4 10 000 to 1 voltage divider and 1 kQ reference resistor input 46 DGND Ground power supply pin connected to common digital ground 47 DATA3 Most significant bidirectional data bus line 48 DATA2 Bit 2 of parallel data bus 49 DATA1 Bit 1 of parallel data bus 50 DATAO Least significan
34. t bidirectional data bus line 51 NIC No connection 52 BEEPER L One of two beeper drive lines Voltage swings VDD to VSS 53 VSS Negative power supply line 3V relative to DGNG 54 VSS Negative power supply line 3V relative to DGNG 55 CLK System clock line from U2 131 072 Hz 56 BCLK Beeper frequency 2 3 kHz clock line from U2 57 TESTCLK Test clock pin for U1 testing 58 BEEPER One of two beeper drive lines Voltage swings VDD to VSS 59 No connection 60 WRITE L When driven low VSS data is written to addressed register 2 6 2 lt l 00 oc l 5 2 ER lt 2 9 4 ER lt gt Theory of Operation VCHEK Input Resistance 5 0 ana01f eps Figure 2 1 Typical VCHEK Input Resistance with DC Volts Function Selectedcance 2 2 7 Chapter 3 Maintenance Title Page 3 1 IntroduUctiQt e een EIER 3 3 3 2 Disassembly and Reassembly eene 3 3 3 3 L nup RT 3 6 3 4 Performance L eA 3 6 3 5 C aliDrattioD 2 teret o tette tette dete e et EET totes 3 7 10 11 12 Multimeters Service Manual 3 2 Maintenance 3 Introduction 3 1 Introduction Section 3 covers the following Disassembly and reassembly Cleaning Performance tests Calibration 3 2 Disassembly and Reassembly WARNING TO AVOID ELECTRICAL SHOCK REMOVE TEST LEADS AND ANY INPUT SIGNALS BEFORE OPENING
35. td Box 58013 61580 TEL 972 3 548 3737 972 3 492190 4 Italy Fluke S R L T amp M Customer Support Via G Casati 23 20052 Monza TEL 39 39 203 6525 FAX 39 39 203 6621 Japan Fluke Corporation Sumitomo Higashi Shinbashi Bldg 1 1 11 Hamamatsucho Minato ku Tokyo 105 TEL 81 3 3434 0181 FAX 81 3 3434 0170 Korea B amp P International Co Ltd Geopung Tocon A 1809 203 1 Nonhyun Dong Kangnam Ku Seoul 135 010 Korea TEL 82 02 546 1457 FAX 82 02 546 1458 Korea IL MYOUNG INC 780 46 Yeogsam Dong Youngdong P O Box 1486 Kangnam Ku Seoul KOREA TEL 82 2 552 8582 4 FAX 82 2 553 0388 Malaysia Mecomb Malaysia Sdn Bhd P O Box 24 46700 Petaling Jaya Selangor TEL 60 3 774 3422 FAX 60 3 774 3414 Mexico Mexel Mexicana De Electronica Industrial S A De C V Diagonal No 27 Col Del Valle C P 03100 Mexico D F TEL 52 5 682 8040 FAX 52 5 687 8695 Mexicana De Electronica Industrial S A Av Porvenir No 8608 Centro C San Martin Local 6 CD Jaurez TEL 16 23 02 35 FAX 16 23 02 35 Netherlands Fluke Europe B V Science Park Eindhoven 5110 P O Box 1186 5602 BD Eindhoven TEL 31 40 644 265 FAX 31 40 644 260 4 17 10 11 12 Multimeters Service Manual 4 18 Fluke Netherland B V Technische Service Prof Act Hurksestraat 2C Gebouw HBR 5652 AJ Eindhoven TEL 31 40 723 220 FAX 31 40 723 337 New Zealand
36. uator 5 and slide switch S1 are both in the OFF position Place the pca over the four screw posts in the case top then press gently on the center of the pca while using the small flat edge screwdriver to shoehorn the pca under the snap on a side of the case top Repeat on the other side and the top 7 TO REMOVE THE SWITCH SUPPORT MP6 Hold the case top with the face of meter in your palm and press on the slide switch actuator MP5 to dislodge the switch support Lift out the switch support 3 3 10 11 12 Multimeters Service Manual WINDOW DECAL MP3 eee CASE TOP MP2 CASE TOP DECAL 4 LCD 03 STRIP LCD 43 ELASTOMERIC CONTACT STRIP SWITCH MP9 TOP SHIELD 2777 7 SWITCH ASSEMBLY S2 SIDE SWITCH 5 MAIN PRINTED CIRCUIT ASSEMBLY A1 SHOCK ABSORBER 10 BOTTOM SHIELD MP9 CASE BOTTOM MP8 NON SKID FOOT MP11 es 4 PHILLIPS HEAD SCREWS H1 4 ana02F eps Figure 3 1 Disassembled Unit Maintenance Disassembly and Reassembly 3 ana03f eps Figure 3 2 Removing and Reinserting the Printed Circuit Assembly 3 5 10 11 12 Multimeters Service Manual 3 3 3 6 The LCD switch assembly slide switch actuator and elastomeric contact strips 33 14 for the LCD and switch assembly are accessible and can replaced as needed Do not allow the LCD to get wet Before installing a new LC
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