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2-12 Service Manual
4044-XXX
Service Checks
Note: All service checks which involve measuring voltages of the
circuit boards (except the controller board) must be performed with
the engine/LVPS to controller board cable disconnected and the
printer positioned on its left side. This provides the servicer access
to the various circuit boards underneath the printer while supplying
necessary power to the rest of the printer.
Cooling Fan Service Check
FRU Action
Model E310
Interconnect Board
Cooling Fan
Make sure motor cable is properly
seated in location CN408 on the
interconnect board. Disconnect the
cable and check connector-pin
CN408-3 for +24 V dc. If the voltage
is not present, replace the
interconnect board. If the voltage is
present, replace the cooling fan.
FRU Action
Model E312
Engine Board
Cooling Fan
Make sure motor cable is properly
seated in location CN3 on the engine
board. Disconnect the cable and
check connector-pin CN3-1 for +24
V dc. If the voltage is not present,
replace the engine board. If the
voltage is present, replace the
cooling fan.