HP Color LaserJet 8500 Service Manual - Page 434

Fault log The fault log is implemented within the formatter diagnostics to record error messages. This log provides service personnel with an account of all errors that occurred while the formatter diagnostics tests were executing. This log is completely separate from the event log. No entries are made in the event log for any diagnostic mode failure. Error message logging When a test in formatter diagnostics detects an error, the Attention LED is lit and a message describing the error is added to the fault log. The fault log holds a maximum of 50 entries. When the fault log is full and a new message needs to be added, the oldest message is discarded. The contents of the fault log are erased when the printer is powered off or when the fault log is cleared. Viewing the fault log The fault log menu appears as an Item selection only when one or more error messages exist in the log. The fault log menu is entered automatically at the end of a test run if any error messages were recorded. Enter the fault log by using ITEM to view the fault log entry. Error message format Each error message has the form: mm.NAME_t[] where: mm NAME t Message number in the fault log, 1 being the oldest message Name of the test that found the failure Error number within the test Type of failure Pertinent data related to the failure 432 Chapter 7 - Troubleshooting EN