Xerox Phaser 6360 Service Manual page 198

General Troubleshooting
4-10
When executed from the Service Diagnostics General Status menu, the
Diagnostic Fault History displays on the Control Panel and updates as each
error event is detected. Fault History events are recorded only when no pre-
existing errors are present. The second and subsequent occurrences of the
same event are not recorded. The maximum number of events recorded is 25.
Once the list is full, additional new events are lost until the log is cleared by
either a printer reboot or by selecting Fault History Master Clear from the Fault
History menu. New events occurring after the list is cleared are recorded.
For display, the list combines a line number, a code, and potentially a test
precondition indicated by a letter P for events requiring a power cycle, a U for
unknown event sequence, an M for more entries, or a string of asterisks *****
to indicate the last error recorded.
As an example:
<Fault History Display>
1 [150]
2 [42]P
3 [198]P
4 [T2]M
Press CANCEL to exit
The example shows a single screen displaying four events. Lines 2 and 3
include the precondition indicator P directing a reboot before component
testing continues. Line 4 includes an abbreviated Misfeed at Tray 2 code, and
the continuation notation M indicating more events appear on subsequent
pages. Pressing OK calls up the next page. Pressing Cancel exits the utility
and displays the Fault History menu.
Note
Jam codes are abbreviated for display. The word "Jam" is removed from
the code leaving only the location designator (F, D, RR, T1~5).
Events typically appear in the order detected. However, occasionally the
event's sequence is indeterminate. As is the case with simultaneous events.
In these cases, a U is appended to the event to indicate an unknown
sequence. While event sequence can be important in determining cause, the
event itself provides a starting point for investigation.
For those events listed with a P, testing of a specific component may not
require the indicated power cycle. For example, if the log lists a motor failure,
it's reasonable to go directly to the appropriate motor test to confirm the failure
without first power cycling the printer. For events involving components, such
as the Fuser, Transfer Roller, or Toner Cartridges, power cycling is
recommended before additional testing is performed.
Phaser 6300/6350/6360 Service Manual