1-8
Troubleshooting the Analyzer
How to troubleshoot the analyzer
How to troubleshoot the analyzer
1 Review ‘’Safety Considerations’’ and ‘’Troubleshooting Hints.’’
WARNING: Service must be performed by trained service personnel who are
aware of the hazards involved (such as fire and electrical shock).
2 See Replacing Assemblies in chapter 3 to determine how to
disassemble and assemble the analyzer.
3 Determine which test to start with by comparing the analyzer’s
symptoms to the symptoms in the following table.
Symptom Troubleshooting Test
Screen blank
Screen grid is distorted or not displayed
After power up, >3 minutes before keys active
No response when key is pressed
Incorrect response when key is pressed
Fatal System Error Please Cycle Power message displayed
Fan not turning
Initial verification,
page 1-10
Keys are active and screen grid is displayed but screen is
defective
Display, page 1-25
Error messages
Calibration fails
Performance test fails
Intermittent failure
HPIB fails
Serial port fails
External monitor port fails
Parallel port fails
Sync out fails
System interconnect port fails
ThinLAN port fails
AUI port fails
Probe power fails
Oven reference fails
Self tests, page 1-32
HPIB trigger fails
External trigger fails
Tri gger, page 1-83
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