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Diagnostic Information 2-100
4059-XXX
Print Quality - Residual Image
Service Tip: Install a new print cartridge if available before doing this
service check. Residual image can be caused by the
photoconductor, cleaning blade and other parts inside the print
cartridge. Residual image on model 3455 can also be caused by the
charge brush contact.
2 Charge Roll Assembly
Charge Roll Link Arm
Check the charge roll for any signs
of toner buildup or other
contamination on the outer edges
that correspond to the bands on the
page. Check the charge links and
arms for proper operation, binds or
incorrectly mounted counterbalance
springs. Repair or replace as
necessary.
3 HVPS Check the following voltages at
J10-8 on the engine board:
Printer Idle
J10-8 measures 0 V dc
Printer Printing Test Page
J10-8 voltage changes from 0 V dc
to +4 V dc
If the voltage does not vary, check
the continuity of line J10-8 in the
front cable harness. If there is no
continuity, replace the cable
harness. If there is continuity,
replace the HVPS. If this does not
correct the problem, replace the
engine board.
Turn the printer Off and check the
resistance between J10-7 and
printer ground. The resistance
measures approximately 0 ohms. If
incorrect, make sure the engine
board is mounted correctly and
securely grounded. If correct,
replace the engine board.
FRU Action