Lexmark E310 Service Manual - Page 34

Service Checks, Cooling Fan Service Check

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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 Model E310 Interconnect Board Cooling Fan Action 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 Model E312 Engine Board Cooling Fan Action 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. 2-12 Service Manual

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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.