Lexmark CS748de User Manual

2-118 Service Manual
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925.02, 925.04, 925.06—Cartridge cooling fan error service check
3
1. Disconnect the cable in connector JFAN1,
and install a new fan.
2. Turn the multifunction printer off, and turn
the MFP on (perform a POR).
Note: After installing the new fan, a print test
is required to verify operation. Print one page
every 30 seconds for 20 minutes to test the
highest fan speed. Do not test unless the fan
is installed in the machine.
Did the error clear?
Replace the cooling fan.
See “Cooling fan
removal” on page 4-93.
Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No
1 Turn the printer off, and remove the rear
frame cover. See “Rear frame cover
removal” on page 4-47.
Check the cable in connector JBLW1 for
proper connection to the system board, for
pinch points, and any other damage to the
cable or connector, and reseat the cable.
Did the error clear?
Problem resolved. Go to step 2.
2
Measure the continuity across all of the fuses
on the system board.
Are any of the fuses blown?
Replace the system board.
See “System board
removal” on page 4-163.
Go to step 3.
3
1. Replace the cartridge cooling fan. See
“Cartridge cooling fan removal” on
page 4-66.
2. Turn the multifunction printer off, and turn
the MFP on (perform a POR).
Note: After installing the new fan, a print test
is required to verify operation. Print one page
every 30 seconds for 20 minutes to test the
highest fan speed. Do not test unless the fan
is installed in the machine.
Did the error clear?
Problem resolved. Replace the system board.
See “System board
removal” on page 4-163.
Step Questions / actions Yes No

Lexmark CS748de Specifications

General

Brand	Lexmark
Model	CS748de
Category	Printer
Language	English