Lexmark E330 Service Manual - Page 76

Cooling fan service check

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4505 Cooling fan service check FRU Cooling fan Action Make sure the fan cable plug is properly seated at J19 (controller card). Turn the printer off and disconnect the cooling fan cable from the controller card. Turn the printer on. Within a few seconds the controller card assembly should apply between +24 V dc to pin 2. See "Controller board" on page 5-3 for more information. • If voltage is present and the fan is not turning, replace the cooling fan. If the fan still doesn't function, replace the controller card. Note: The fan speed is controlled by a module on the PCB. Between +8 V and +24 V dc are constantly supplied at pin 2 (J19). Pin 1 is ground while pin 3 receives feedback from the fan motor. • If voltage is not present, see "Controller board" on page 5-3 for more information. 2-48 Service Manual

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2-48
Service Manual
4505
Cooling fan service check
FRU
Action
Cooling fan
Make sure the fan cable plug is
properly seated at J19 (controller
card).
Turn the printer off and disconnect
the cooling fan cable from the
controller card.
Turn the printer on. Within a few
seconds the controller card
assembly should apply between
+24 V dc to pin 2. See
“Controller
board” on page 5-3
for more
information.
•
If voltage is present and the fan is
not turning, replace the cooling
fan. If the fan still doesn’t function,
replace the controller card.
Note:
The fan speed is controlled by
a module on the PCB.
Between +8 V and +24 V dc
are constantly supplied at
pin 2 (J19). Pin 1 is ground
while pin 3 receives feedback
from the fan motor.
•
If voltage is not present, see
“Controller board” on page 5-3
for more information.