Agilent Technologies E4980A Service Manual page 28

Troubleshooting
To Troubleshoot the Instrument
Figure 4-1 Primary trouble isolation flowchart
Display and Boot-up Problems
Power on
Power up normally?
Yes
Power on test pass?
No
Error message is
displayed?
Yes
Go to Function Specific
Troubleshooting*
(To Check the LCD)
Problems on Measurement Performance and Measurement Result
Power on
Power on test
Power on test pass?
Yes
28
No Go to Power on Sequence
Troubleshooting
Yes Go to Troubleshooting
Using Service Function
No Go to Power on Sequence
Troubleshooting
* In case of display scan,
brightness and color problems.
No Go to Troubleshooting
Using Service Function
Problems on Front Panel, LCD Display,
Front USB Port, GPIB Interface, USB
Interface, LAN Port, External Trigger Input,
Handler Interface, Scanner Interface or
Bias Current Interface.
Power on
Go to Function Specific
Troubleshooting
Performance test
No
Performance test pass?
Yes
End
Go to Performance Test
Failure Troubleshooting
Chapter 4