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2-93 4059 Service Manual
4059-XXX
2 High Voltage Contact Check the PC drum contact on the
right side frame for damage, PC
drum contact wear or contamination.
If the contact is bent or damaged,
replace the contact.
Note: Inspect the HVPS PC drum
contact on the board for any signs of
damage or contamination.
3 HVPS Check the fuse on the HVPS. If
open, replace the HVPS. Check the
voltages at J10 on the engine board.
Measure the following voltages from
connector J10 to printer ground:
Printer Idle
J10-5 measures +24 V dc
Printer Printing
J10-5 measures +24 V dc
In the voltages at J10-5 are
incorrect, replace the engine board.
4 Front Cable Harness
HVPS Section
Check the front cable harness at J10
on the engine board and at CN1 on
the HVPS to make sure the harness
is connected properly. If connected
properly, check the continuity of the
cable harness. If there is no
continuity, replace the front cable
harness.
5 Printhead Assembly Generally a 93x service error is
posted if the printhead assembly
fails and the printer does not give a
blank copy symptom.
The printhead used in the printer
does not have a mechanical shutter
as previous laser printers. The
printer is interlocked through the
front top cover interlock switch.
FRU Action