Lexmark E320 Service Manual - Page 96

Cooling fan service check (E220/E321/E323), RIP controller E220, E321/E323 only

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4500 Cooling fan service check (E220/E321/E323) FRU Cooling fan Action Make sure the cooling fan motor cable plug is properly seated. Turn the printer off and disconnect the cooling fan cable at J2 on the controller card. Turn the printer on. Within a few seconds the controller card assembly should apply +24 V dc to pin #1. See "RIP controller (E220/ E321/E323 only) " on page 5-8 for more information. • If voltage is present, replace the cooling fan first. If the fan still doesn't function, replace the controller card. Note: The fan speed is controlled by a module on the PCB. Therefore, +24 V dc is constantly supplied at pin #1 (J2). Pin #2, the return, typically indicates varying voltages of less than +10 V dc in operation. • If voltage is not present, see the "RIP controller (E220/E321/ E323 only) " on page 5-8 for more information. 2-66 Service Manual

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2-66
Service Manual
4500
Cooling fan service check (E220/E321/E323)
FRU
Action
Cooling fan
Make sure the cooling fan motor
cable plug is properly seated.
Turn the printer off and disconnect
the cooling fan cable at J2 on the
controller card.
Turn the printer on. Within a few
seconds the controller card
assembly should apply +24 V dc to
pin #1. See
“RIP controller (E220/
E321/E323 only) ” on page 5-8
for
more information.
•
If voltage is present, replace the
cooling fan first. If the fan still
doesn’t function, replace the
controller card.
Note:
The fan speed is controlled by
a module on the PCB.
Therefore, +24 V dc is
constantly supplied at pin #1
(J2). Pin #2, the return,
typically indicates varying
voltages of less than
+10 V dc in operation.
•
If voltage is not present, see the
“RIP controller (E220/E321/
E323 only) ” on page 5-8
for
more information.