4-1
Chapter 4
Maintenance
Contents
Page
4-1. Introduction .................................................................... 4-3
4-2. Service Information ........................................................ 4-3
4-3. General Information ....................................................... 4-5
4-4.
Handling Precautions for Using Static Sensitive
Devices ...................................................................... 4-5
4-5.
Disassembly and Reassembly ..................................... 4-5
4-6.
Calibration and Backup Fuse Access ...................... 4-6
4-7.
Main PCB Access.................................................... 4-7
4-8.
LCD and Microcomputer PCB Disassembly and
Assembly................................................................. 4-8
4-9.
Backup Fuse Replacement .......................................... 4-11
4-10.
Cleaning ...................................................................... 4-11
4-11. Performance Tests .......................................................... 4-12
4-12.
Initial Procedure.......................................................... 4-12
4-13.
Microcomputer and Display Test................................ 4-12
4-14.
Voltage Test................................................................ 4-13
4-15.
Resistance Test ........................................................... 4-14
4-16.
Continuity Test............................................................ 4-15
4-17.
Current Test ................................................................ 4-15
4-18.
Diode Test................................................................... 4-17
4-19. Calibration Adjustments ................................................. 4-17
4-20. Troubleshooting.............................................................. 4-19
4-21.
Self-Tests .................................................................... 4-19
4-22.
Ratio Self-Test......................................................... 4-19
4-23.
Switch Decoding Self-Test...................................... 4-20
4-24.
Troubleshooting Guide ............................................... 4-21
Summary of Contents for 8062A
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Page 8: ...8062A Instruction Manual iv...
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Page 102: ...8062A Instruction Manual 5 12 8062A 4031 iv39c eps Figure 5 2 A1 Main PCB Assembly...
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Page 108: ...8062A Instruction Manual 6 4 dy55c eps Figure 6 1 Accessories...
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Page 123: ...8062A Instruction Manual 7 7 8062A 1201 iu46c eps Figure 7 5 A1 Main PCB Schmatic Diagram...
Page 124: ...8062A Instruction Manual 7 8 8060A 1003 iu61f eps Figure 7 6 A3 RMS PCB Schmatic Diagram...