Agilent Technologies 8453 Operator's Manual page 174

Diagnostics and
Troubleshooting
For different stages of troubleshooting, the startup test of the
spectrophotometer, instrument self-test, and various diagnostic tests are
used.
Instrument start-up tests are implemented in the spectrophotometer
firmware. They are used to check if the instrument electronics are
functioning during start up and operation of the instrument and create error
messages or symptoms on the front panel status LEDs. Self-test and
diagnostic tests are implemented in the operating software. For explanation
of these tests, see your software documentation and online help in the
software.
This chapter covers the following topics related to troubleshooting the
spectrophotometer:
• front panel status and power switch LEDs,
• error messages, and
• general troubleshooting hints.
This chapter gives information about how to troubleshoot the instrument.
For detailed procedures about cleaning lenses, disassembling the
spectrophotometer and exchanging individual electronic items, see Chapter 4
"Maintenance and Repair".
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