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HP LaserJet Quick Reference Service Manual Page 268

Volume i.
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User manual - 449 pages
Manual - 432 pages
Software manual - 418 pages


When servicing these printers, ensure that the left and
right fusing assembly covers are undamaged and properly fastened in
place upon completion of the repair. The cover can be damaged if all
the wires routed beneath the covers are not positioned properly prior to
tightening the cover screws. Damage can occur during shipment or
through other mishandling of the fusing assembly. The replacement
part numbers are as follows:
Cover, Left, Fuser
Cover, Right, Fuser
Internal Cabling Problems
and LaserJet III printers may be the cause of certain printer failures.
Replace these cables before attempting to replace
expensive assemblies. Part numbers for the cable assemblies appear in
the following table.
Part Number
The LaserJet IID/IIID scanning cable assembly may also cause errors 41, 51, or
52. Cable assembly part numbers are: LaserJet IID: RG1-1370-000CN
LaserJet IIID: RG1-2067-000CN.
The printer test tool (see chapter 4) is useful in detecting problems in
high voltage power supply.
266 – Summary of service notes and technical tips
Four cable harnesses located in the LaserJet series II
Laser scanner cable assembly
Fusing assembly cable
(long, 7-wire)
High-voltage power supply
cable (8-wire)
AC power module cable
(short, 4-wire)
Error Conditions
41 51 52 scanner motor whining,
distorted print, lines across page.
13, 50, ghosting, open
Constant ozone production,
repetitive print defects, improper
toner-low sensing.
50, with a cold fuser.


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