Troubleshooting - Keysight Infiniium 9000 Series Service Manual

Infiniium 9000 Series Oscilloscopes
Service Guide

4 Troubleshooting

To troubleshoot the oscilloscope / 63
Primary Trouble Isolation / 64
Power Supply Trouble Isolation / 68
How to Use the Power Fault LEDs / 69
Display Trouble Isolation / 74
To check the backlight inverter voltages / 75
To check the display board video signals / 76
Front Panel Display Trouble Isolation / 77
Front Panel Trouble Isolation / 79
Motherboard Verification / 80
To set up the BIOS / 81
Acquisition Board Trouble Isolation / 82
AutoProbe Board Trouble Isolation / 87
Keyboard Trouble Isolation Procedure / 88
To check the LEDs / 89
To Clean Connectors / 90
Before You Contact Keysight / 91
To check probe power outputs / 92
The service strategy for troubleshooting Keysight Technologies 9000 Series
oscilloscopes is to isolate problems to a faulty assembly, then use the disassembly
and assembly procedures in Chapter 5, "Replacing Assemblies," starting on page
93 to replace the defective assembly.
Safety Read the Safety Notices at the back of this manual before servicing the
oscilloscope. Before performing any procedure, review it for cautions and
warnings.
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