Agilent Technologies 4352B, Руководство по обслуживанию

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INSPECT THE PO WER ON SEQUENCE
Check the F an
Turn the analyzer power on. Inspect the fan on the rear panel.
The fan should be rotating and audible .
If case of unexpected results , check A C line power to the analyzer . Check the fuse (rating listed
on the rear panel). Check the line voltage setting. F or setting the line voltage , see the P ower
R equirements in Appendix B .
If the problem persists , continue with the P ower Supply Troubleshooting chapter .
Check the Front P anel LED
Turn on the analyzer and watch for the following events in this order:
1. Beep is sounding.
2. The beep stops .
3. Within a minute , LCD should come up bright.
4. \Internal test in progress" is shown for several seconds .
If case of unexpected results , continue with Digital Control Troubleshooting chapter .
Check Error Message
Turn the analyzer power on. Inspect the LCD . No error message should be displayed.
If one of the error message or status annotation listed below appears on the LCD , follow the
instructions described below .
If one of the following error messages is displayed, troubleshoot the power supply group in
Chapter 5.
POWER FAILED ON ---
POWER FAILED ON PostRegHot
If one of the following error messages or the status annotation (SVC ) is displayed,
troubleshoot the digital control group in Chapter 6.
EEPROM CHECK SUM ERROR
DUAL PORT SRAM R/W ERROR
CPU DRAM R/W ERROR
Note
POWER ON TEST FAILED indicates the power on self-test failed.
These error messages indicate that one of power-on self tests failed. If an other error message
appears , refer to the appendix Error Messages .
4-4 Overall T roubleshooting