Lexmark Optra 4049 Series, Service Manual

Page: 69 / 194

Diagnostic Aids 3-8
4049-XXX
Error Log
The error log records the last six “2X Paper Jam” or “9XX Service”
errors. In a full log, position 6 is the oldest error. If more than six
errors are received, the oldest error is discarded. If the same error
occurs consecutively it is recorded only once.
All 97X Network Card errors are logged as 977.
1. Enter Diagnostics mode.
2. Select [ERROR LOG].
3. Select [CLEAR] and then [CONTINUE] to clear the error log.
4. Press Return to return to the Diagnostics mode main menu.
Flash Test
This test writes to and reads from the flash memory. It destroys all
data stored in the flash SIMM.
1. Enter Diagnostics mode.
2. Select [DEVICE TESTS].
3. Select [Flash Test].
The operator panel will display [Passed] or [Failed].
4. Press Return to return to the Diagnostics mode main menu.
Fuser Temperature And Warm-Up Time
These settings allow adjustment of the fuser to correct problems with
paper curl or melting letterheads.
Paper curl in which the top and bottom of the page curl away from
the printed side (hot paper curl) can be corrected by reducing the
fuser temperature. Reduce the setting from Normal to No Boost; if
necessary, reduce the setting further to Low Temperature. Verify that
the toner is being adequately fused to the paper at the new tempera-
ture setting.
Paper curl in which the edges of the paper curl toward the printed
side (cold paper curl) can be corrected by increasing the fuser
warm-up time. Use the lowest setting that corrects the problem.
Setting “0” is the factory default and is the shortest warm-up time.