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Fluke 10 Service Manual

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®
10,11,12
Multimeters
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.

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Summary of Contents for Fluke 10

  • Page 1 ® 10,11,12 Multimeters 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.
  • Page 3 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...
  • Page 4 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.

  • Page 5: Table Of Contents

    Table of Contents Chapter Title Page Introduction and Specifications ............1-1 1-1. Introduction................... 1-1 1-2. Specifications..................1-1 Theory of Operation ................2-1 2-1. Introduction................... 2-3 2-2. Theory of Operation................2-3 2-3. Analog Measurement IC (U1) ............2-3 2-4. Microcomputer IC (U2)..............2-3 2-5.
  • Page 7 Electrical Components on Main PCA ..............2-4 2-2. U1 Pinout Table ..................... 2-5 3-1. Required Equipment....................3-7 3-2. Performance Tests for Fluke 10 ................3-9 3-3. Performance Tests for Fluke 11 and 12..............3-10 4-1. Final Assembly....................... 4-5 4-2. A1 Main PCA......................4-7...
  • Page 9 Removing and Reinserting the Printed Circuit Assembly........3-5 3-3. Calibration Adjustment ..................3-10 4-1. Final Assembly Drawing..................4-6 4-2. A1 Main PCA Components..................4-9 4-3. Fluke 10 Schematic ....................4-10 4-4. Fluke 11 Schematic ....................4-12 4-5. Fluke 12 Schematic ....................4-14...

  • Page 12: Introduction And Specifications

    Chapter 1 Introduction and Specifications Title Page 1-1. Introduction................... 1-3 1-2. Specifications..................1-3...

  • Page 14: Introduction

    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: •...
  • Page 15 -30°C to 60°C indefinitly (to -40°C for 100 hrs) Temperature Coefficient 0.1 x (specified accuracy)/°C (<18°C or >28°C) Relative Humidity 0% to 90% (-10°C to 35°C) 0% to 70% (35°C to 50°C) Battery Type 9V, NEDA 1604 or IEC 6F22 Battery Life...
  • Page 16 Protection* (Nominal) Rejection Ratio Rejection (1 kΩ Unbalance) Volts DC 600V rms >10 MΩ <100 pF >100 dB at dc, 50 Hz, >50 dB at 50 Hz & LoZ = >2 kΩ or 60 Hz or 60 Hz CHEK <200 pF** >5 MΩ...

  • Page 17: Theory Of Operation

    Chapter 2 Theory of Operation Title Page 2-1. Introduction................... 2-3 2-2. Theory of Operation ................2-3 2-3. Analog Measurement IC (U1) ............2-3 2-4. Microcomputer IC (U2)..............2-3 2-5. VCHEK Input Resistance..............2-3...
  • Page 18 10, 11, 12 Multimeters Service Manual...

  • Page 19: Introduction

    Introduction 2-1. Introduction Section 2 provides a basic theory of operation for the Series 10 Multimeters. Electrical components on the printed circuit assembly (A1 Main 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.

  • Page 20: Electrical Components On Main Pca

    10, 11, 12 Multimeters Service Manual Table 2-1. Electrical Components on Main PCA Circuit and Function Component Designator(s) Analog Measurement IC Microcomputer IC Input Divider and Ohms Reference Resistor Network Input Divider AC Coupling Capacitor J2 Input Receptable Voltage Sense Resistor...

  • Page 21: U1 Pinout Table

    Theory of Operation VCHEK Input Resistance Table 2-2. U1 Pinout Table Pin Name Description READ(L) When low (VSS), data from addressed register can be read. ADR5 Most significant address bus line. ADR4 Bit 4 of parallel address bus. ADR3 Bit 3 of parallel address bus. ADR2 Bit 2 of parallel address bus.
  • Page 22 Service Manual Table 2-2. U1 Pinout Table (cont) Pin Name Description AMPS Shunt resistor sense pin. Unused in Fluke series 10. ISRC Current source pin for continuity, ohms, and capacitance. Slide-switch position sense pin. Internal pull down. OHMS Ohms sense resistor input pin. Sense voltage at J2.
  • Page 23 Theory of Operation VCHEK Input Resistance POSITIVE DCV INPUT NEGATIVE DCV INPUT 10.0 500.0 |Vin| (Vdc) ana01f.eps Figure 2-1. Typical VCHEK Input Resistance with DC Volts Function Selectedcance...

  • Page 24: Maintenance

    Chapter 3 Maintenance Title Page 3-1. Introduction................... 3-3 3-2. Disassembly and Reassembly............... 3-3 3-3. Cleaning....................3-6 3-4. Performance Tests ................3-6 3-5. Calibration .................... 3-7...
  • Page 25 10, 11, 12 Multimeters Service Manual...

  • Page 26: Introduction

    Maintenance 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 THE CASE. CAUTION To avoid contamination from the fingers, handle the pca by the edges or wear gloves.
  • Page 27 10, 11, 12 Multimeters Service Manual WINDOW DECAL (MP3) CASE TOP (MP2) CASE TOP DECAL (MP4) LCD (U3) ELASTOMERIC CONTACT STRIP, LCD (J3) ELASTOMERIC CONTACT STRIP, SWITCH (MP9) TOP SHIELD (MP7) SWITCH ASSEMBLY (S2) SIDE-SWITCH ACTUATOR (MP5) SWITCH SUPPORT (MP6)
  • Page 28 Maintenance Disassembly and Reassembly SNAP SNAPS SNAP ana03f.eps Figure 3-2. Removing and Reinserting the Printed Circuit Assembly...

  • Page 29: Cleaning

    1. Connect the calibrator to the [+] and COM jacks on the meter. 2. Refering to Table 3-2 for the Fluke 10 or Table 3-3 for the Fluke 11 or 12, put the meter in the function and range shown for test 1.

  • Page 30: Calibration

    Maintenance Calibration Table 3-1. Required Equipment Equipment Minimum Specifications Recommended Model DMM Calibrator DC Voltage: 0-600V Fluke Models (5700A, 5100B, or equivalent) Accuracy: ±0.25% AC Voltage: 0-600V Accuracy: ±0.5% Frequency: 50-400 Hz Decade Resistor Resistance: 1.0-40 MΩ General Reisistance RDS-77B and 41B Accuracy: ±0.25%...
  • Page 31 10, 11, 12 Multimeters Service Manual Table 3-2. Performance Tests for Fluke 10 Test No. Meter Range Input To Meter Slide-Switch Display Display Position Minimum Maximum 4.000V AC Center 0.000 0.003 4.000 AC 10 mV, 50 Hz Center 0.007 0.013 4.000 AC...

  • Page 32: Performance Tests For Fluke 10

    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 in the 10 µF, 100 µF, 1000 µF, and 10,000 µF ranges. †††...
  • Page 33 10, 11, 12 Multimeters Service Manual CLIP TO BASE OF CONTACTS INPUT RECEPTACLES BATTERY ADJUST R4 FOR 3.997-4.003V DC anao4f.eps Figure 3-3. Calibration Adjustment 3-10...

  • Page 34: Replaceable Parts And Schematics

    Chapter 4 Replaceable Parts and Schematics Title Page 4-1. Introduction................... 4-3 4-2. How To Obtain Parts ................4-3 4-3. Schematics .................... 4-3 4-4. Warranty and Service Centers .............. 4-4...
  • Page 35 10, 11, 12 Multimeters Service Manual...

  • Page 36: Introduction

    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.

  • Page 37: 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.

  • Page 38: Final Assembly

    855226 Notes 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...
  • Page 39 10, 11, 12 Multimeters Service Manual MP10 MP11 H1-4 ana05f.eps Figure 4-1. Final Assembly Drawing...

  • Page 40: A1 Main Pca

    876552 56289 293D335X0016B2T CAP,CER,0.022UF,±10%,50V,X7R, 747279 04222 12065C223KAT060B 1206 C 10 CAP,AL,22UF,±20%,10V,SOLV 887245 62643 KRG10VB22RM4X7RP PROOF C 14 CAP,POLYES,0.01UF,±10%,1000V 822361 68919 MKS4.01/1000V/10 C 15 CAP,TA,47UF,±20%,10V,7343 867580 89536 867580 C 16 CAP,CER,10PF,±20%,50V,C0G 721589 04222 SR595A100MAA CR 1 DIODE,SI,100 PIV,1.0 AMP 912451 04713 1N4002...
  • Page 41 872234 89536 872234 Notes Y 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.
  • Page 42 Replaceable Parts and Schematics Warranty and Service Centers ana06f.eps Figure 4-2. A1 Main PCA Components...
  • Page 43 10, 11, 12 Multimeters Service Manual ana07f.eps Figure 4-3. Fluke 10 Schematic 4-10...
  • Page 44 Replaceable Parts and Schematics Warranty and Service Centers ana08f.eps Figure 4-3 Fluke 10 Schematic (cont) 4-11...
  • Page 45 10, 11, 12 Multimeters Service Manual ana09f.eps Figure 4-4. Fluke 11 Schematic 4-12...
  • Page 46 Replaceable Parts and Schematics Warranty and Service Centers ana10f.eps Figure 4-4. Fluke 11 Schematic (cont) 4-13...
  • Page 47 10, 11, 12 Multimeters Service Manual ana11f.eps Figure 4-5. Fluke 12 Schematic 4-14...
  • Page 48 Replaceable Parts and Schematics Warranty and Service Centers ana12f.eps Figure 4-5. Fluke 12 Schematic cont) 4-15...
  • Page 49 10, 11, 12 Multimeters Service Manual FEDERAL SUPPLY CODES FOR MANUFACTURES 4-16...
  • Page 50 Replaceable Parts and Schematics Warranty and Service Centers SERVICE CENTERS 4-17...
  • Page 51 10, 11, 12 Multimeters Service Manual SERVICE CENTERS (CONT) 4-18...

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