Agilent Technologies Infiniium 90000 A, Service Manual

Page: 5 / 148

Contents
5
1 General Information
Instruments covered by this service guide 8
Performance-Enhanced Versus Standard Models 9
Accessories supplied 10
Specifications and Characteristics 10
Environmental Conditions 11
Measurement Category 11
Oscilloscope Dimensions 12
2 Calibration
To run the self calibration 15
3 Testing Performance
Performing Self-Test and Calibration 19
Offset Accuracy Test 21
DC Gain Accuracy Test 29
Analog Bandwidth - Maximum Frequency Check 35
Time Scale Accuracy (TSA) 42
Performance Test Record 45
4 Troubleshooting
To troubleshoot the oscilloscope 53
Primary Trouble Isolation 54
Power Supply Trouble Isolation 57
Under-Voltage Fault 60
Over-Temperature Fault 65
Over-Voltage Fault 68
Display Trouble Isolation 71
To check the backlight inverter voltages 73
To check the display board video signals 74
Front Panel Display Trouble Isolation 75
Front Panel Trouble Isolation 77
Motherboard Verification 78
To setup the BIOS 79
Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests 80
AutoProbe Board Trouble Isolation 83
To check the keyboard; Trouble Isolation Procedure 84
To check the LEDs 85
Software Revisions 86
To check probe power outputs 87
5 Replacing Assemblies
To return the oscilloscope to Agilent Technologies for service 91
To remove and replace the cover, top plate, and bottom plate 92