Lexmark 4039-1XX - Manual (Page 31)

Diagnostic Information 17
4039-1XX
.
If the voltages are not correct replace the system board.
Blurred or Fuzzy Print
This can be caused by a damaged gear train or by paper slippage in
the feed roll or transfer roll. Also
see “Banding” on page 13.
Inspect the HVPS contacts; make sure each spring-loaded contact
returns when pressed and released. Inspect the transfer roll housing
contacts for damage or contamination. Check the gear train for
damage, binds, or wear.
When using the 100-sheet auxiliary feeder, some blurring may occur
at the point where the feeder’s friction rollers release the paper.
Dead Machine
Possible causes: no voltage reaching the printer, LVPS failure, blown
LVPS fuse, failure of the On/Off switch or switch linkage, or a
shorted electrical component.
Check for the indicated voltages at the LVPS connection to the
system board. If no voltages are present, remove the LVPS cover
and check fuse F1 and the power switch before replacing the LVPS.
10P
Voltage while
Printing Voltage while
Idling
J14-1 to J14-4 Less than 5VDC 0VDC
J14-2 to J14-4 Less than 5VDC 0VDC
J14-3 to J14-4 The meter should
fluctuate slightly
between each
page. 0VDC
J14-8 to J14-4 1VDC 6VDC