Lexmark CS748de, Service Manual

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Diagnostic aids
3-25
5026
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DC Charge Adjust, Dev Bias Adj, Transfer Adjust
Each of these three settings enables you to adjust the high voltage levels controlling the electrophotographic
process. You will use these settings to compensate for unusual operating circumstances such as high humidity.
The printer uses the value of these settings together with other settings to calculate printing speed and media
selection.
Reports
Menu Settings Page
The Menu Settings Page is a list of DIAGNOSTICS settings with the current value.
Event Log
Display Log
The event log provides a history of printer errors. It contains the 12 most recent errors that have occurred on the
printer. The most recent error displays in position 1, and the oldest error displays in position 12 (if 12 errors have
occurred). If an error occurs after the log is full, the oldest error is discarded. Identical errors in consecutive
positions in the log are entered, so there may be repetitions. All 2
xx
and 9
xx
error messages are stored in the
event log.
To view the event log:
1.
Select
EVENT LOG
from the Diagnostics Menu.
2.
Select
Display Log
.
Touch
Back
ore press to return to the EVENT LOG menu.