Keysight E4980A - Automatic Bias Polarity Control

Keysight E4980A

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108 Keysight E4980A/E4980AL Precision LCR Meter

Replacement Procedure

Front Panel, Key Pad, and Key Flex Circuit Replacement

6-

Figure 6-18 Front Panel, Key Pad, and Key Flex Circuit Removal

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Table of Contents

Default Chapter2
- Safety Notices2
Table of Contents3
- Caution3
- Safety Summary3
- Manufacturer's Declaration4
- Regulatory Compliance Information4
- Safety Notice Supplement5
- General Safety Precautions6
- Safety Symbols7
- Manuals for E4980A/E4980AL9
General Information Organization of Service Guide17
- Instruments Covered by this Manual19
- Required Equipment20
Performance Test21
- Introduction21
  - Test Equipment Required22
- Individual Test Description23
Adjustment25
- Safety Considerations25
- Warm-Up for Adjustment25
- Required Equipment25
- Required Adjustment after Replacing Assembly26
Troubleshooting29
- Introduction29
- To Troubleshoot the Instrument30
  - Primary Trouble Isolation30
- Power on Sequence Troubleshooting32
- Troubleshooting Using Service Function36
- Function Specific Troubleshooting47
- Performance Test Failure Troubleshooting65
Replaceable Parts69
Replacement Procedure71
- Replacing an Assembly71
- Required Tools72
- 3/4 Rack Module Top Replacement73
- A3 Analog Daughter Board Replacement77
- A2 Analog Board Replacement79
- Front Panel Assembly Removal81
- Option Interface Replacement82
- PPMC PCA Replacement84
- A1 Mother Board Replacement86
- Power Supply Assembly Replacement88
  - Tools Required88
  - Removal Procedure88
- Replacement Procedure89
Base Plate Replacement91
- Tools Required91
- Removal Procedure91
- Replacement Procedure92
Rear Panel Assembly Replacement94
- Tools Required94
- Removal Procedure94
- Replacement Procedure95
FAN Assembly Replacement96
- Tools Required96
- Removal Procedure96
- Replacement Procedure96
GPIB Cable Replacement98
- Tools Required98
- Removal Procedure98
- Replacement Procedure98
Power Inlet Assembly Replacement100
- Tools Required100
- Removal Procedure100
- Replacement Procedure100
PCA E4980 USB Replacement102
- Tools Required102
- Removal Procedure102
- Replacement Procedure102
Binding Post Sgl Replacement103
- Tools Required103
- Removal Procedure103
- Replacement Procedure103
Inverter Replacement105
- Tools Required105
- Removal Procedure105
- Replacement Procedure105
Front Panel, Key Pad, and Key Flex Circuit Replacement107
- Tools Required107
- Removal Procedure107
- Replacement Procedure107
Display Interface Replacement109
- Tools Required109
- Removal Procedure109
- Replacement Procedure109
Post-Repair Procedures111
A.manual Changes115
- Manual Changes115
B.firmware Update117
- Update the E4980A/ E4980AL Firmware Using USB/GPIB Interface117
  - Required Equipment117
  - How to Update E4980A/ E4980AL Firmware Using USB/GPIB Interface117
- Update the E4980A/ E4980AL Firmware Using USB Cable119
  - Required Equipment119
  - How to Update E4980A/ E4980AL Firmware Using USB Cable119
C.power Requirement121
- Replacing Fuse121
  - Fuse Selection121
  - Setting up the Fuse121
- Power Requirements122
  - Power Cable122
D.error Messages125
Warning Message134

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