2-20 Service Manual
4506-1xx
Fuser
Codes 920 through 925 indicate a problem in the fuser (see “Fuser service check” on page 2-26 for more
information) or toner cartridge.
Printhead, transport motor, or RIP/engine communication error
Codes 930 through 935 indicate a problem with the printhead. Check cables to the printhead. Replace the
printhead as necessary.
Codes 936 and 937 indicate a problem in the drive system.
Code 939 indicates a communication failure between the RIP and engine processors.
Service tertiary light patterns—fuser (92x)
Description/action
✷ ✷ When this secondary code is received, one of the following tertiary
light patterns is available.
✷ 920 Fuser below temperature when
printing
Replace the fuser.
✷✷921 Fuser below standby temperature
(see “Fuser service check” on
page 2-26 for more information)
✷✷922 Fuser failed to reach standby
temperature
✷✷✷923 Fuser too hot during printing or idle
✷✷ 924 Open circuit in thermistor path
✷✷✷925 Incorrect fuser lamp installed. Check the AC voltage.
Change the fuser to
match the voltage.
Service tertiary light patterns—printhead, transport motor, or RIP/engine communication
error (93x)
Description/action
✷ ✷ ✷ When this secondary code is received, one of the following tertiary
light patterns is available.
✷ 930 Wrong printhead Check connectors. Replace the
printhead.
✷✷931 No first HYSNC
✷✷932 Printhead lost
HYSNC
✷✷✷933 Mirror motor locked
but no HYSNC
✷✷ 934 Mirror motor lost
lock
✷✷✷935 Mirror motor not at
operating speed.
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