Keysight Technologies 34980A

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4 Troubleshooting and Diagnostics

92 Keysight 34980A Service Guide

For the 34924A, relay part numbers are given on page 129 and the component

locator is shown on page 141. The table below shows the relationship of channel

numbers to relay numbers.

Main Page

Declaration of Conformity2
Safety Information2
Safety Considerations3
- General3
- Before Applying Power4
- Ground the Instrument4
- Do Not Operate in an Explosive Atmosphere4
- Do Not Remove the Instrument Cover4
- Do Not Modify the Instrument4
- In Case of Damage4
- Environmental Conditions5
Safety Symbols3
Sales and Technical Support6
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC6
- Product Category6
Front Panel at a Glance7
Rear Panel at a Glance9
Rear Panel Connector Pinouts11
- External Trigger/Alarms Connector (Male D-Sub)11
- Annunciator Display Indicators12
- Analog Bus Connector (Female D-Sub)13
Front Panel Menu Reference14
Instrument Rack Mounting16
Table of Contents19
Obtaining Service24
- Operating Checklist24
- Types of Service Available24
- Repackaging for Shipment25
- Cleaning26
- Self Test Procedures26
- Electrostatic Discharge (ESD) Precautions27
Specifications29
Calibration Procedures31
- Keysight Technologies Calibration Services32
- Calibration Interval32
- Adjustment Is Recommended32
- Time Required for Calibration33
- Automating Calibration Procedures33
- Recommended Test Equipment34
- Calibration Security35
- Calibration Message36
- Calibration Count36
- Calibration Process37
- Aborting a Calibration in Progress37
- Performance Verification Tests38
- Internal DMM40
- Plug-In Modules55
Troubleshooting and Diagnostics68
- Troubleshooting Hints68
- Power Supply69
- Product Firmware Updates69
- Instrument Errors70
- Error Numbers71
- Calibration Errors76
- Isolate a Problem with a Plug-In Module81
- Relay and FET Replacement82
- 34921A 40-Channel Armature Multiplexer with Low Thermal Offset83
- 34922A 70-Channel Armature Multiplexer85
- 34923A 40/80-Channel Reed Multiplexer88
- 34924A 70-Channel Reed Multiplexer91
- 34925A 40/80-Channel Optically-Isolated FET Multiplexer94
- 34931A Dual 4X8 Armature Matrix97
- 34932A Dual 4X16 Armature Matrix100
- 34933A Dual/Quad 4X8 Reed Matrix105
- 34937A 32-Channel GP Switch109
- 34938A 20-Channel High-Current GP Switch111
Disassembly and Repair114
- Electrostatic Discharge (ESD) Precautions114
- Surface Mount Repair114
- Tools Required114
- Basic Disassembly115
- Power Supply Removal116
- Power Supply Disassembly118
- KOM Removal119
- Front Panel Removal120
- Front Panel Disassembly121
- DMM Removal122
- Backplane Removal123
Replaceable Parts125
- To Order Replaceable Parts126
- Backdating and Part Changes126
- Mainframe Replaceable Parts127
- 34921A Replaceable Parts128
- 34923A Replaceable Parts129
- 34931A Replaceable Parts130
- 34932A Replaceable Parts131
- 34937A Replaceable Parts132
- 34946A and 34947A Replaceable Parts132
- Vendor Addresses133
Backdating135
Diagrams137
- 34921A Component Locator138
- 34922A Component Locator139
- 34923A Component Locator140
- 34924A Component Locator141
- 34925A Component Locator (Top)142
- 34925A Component Locator (Bottom)143
- 34931A Component Locator144
- 34932A Component Locator145
- 34933A Component Locator146
- 34937A Component Locator147
- 34938A Component Locator148

Keysight Technologies 34980A

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