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4500–32x
Cooling Fan Service Check
FRU
Cooling Fan
Cover Interlock Switch Service Check
terlock Switch Service Check
Note: Make sure a toner cartridge is installed and the cover closes
all the way, engaging the cover open switch lever.
FRU
Cover Interlock Switch
2-40
Service Manual
Action
Make sure the cooling fan motor
cable plug is properly seated on the
engine board.
Turn the printer off and disconnect
the cooling fan cable on the engine
board.
Turn the printer on. Within
approximately 3 seconds the engine
board should apply +24V dc to the
fan. See
"Connector Locations"
on page 5-1
for more information.
• If voltage is present, replace the
cooling fan.
• If voltage is not present, see the
"Engine Board Service Check
d Service Check"
on page
2-41.
Action
Disconnect the cover interlock cable
plug from the engine board.
Push the cover interlock switch to
the closed position and check for
continuity. See
"Connector
Locations" on page 5-1
information.
If the switch does not close, replace
the switch.
Check for +24V dc. If voltage is not
present, see
"Engine Board Ser-
vice Check" on page
Within
for more
2-41.
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