Lexmark X862de - Scanner Unit Assembly EEPROM Sub System Failure; Scanner Cooling Fan Failure

2-134 MFP Service Manual
7500-432, -632, and -832
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843.22 Scanner unit assembly EEPROM sub system failure
843.23 Scanner cooling fan failure
2 Perform a POR.
Does the error remain when the power is turned off/on?
Replace the
ADF controller
card assembly.
Go to “ADF
controller card
assembly
removal” on
page 4-175.
Problem solved.
Step Check Yes No
1 Check the connection of each scanner controller card
assembly connector.
Are the connectors of the scanner controller card
assembly connected properly?
Go to step 2. Connect each
connector of
the scanner
controller card
assembly
properly.
2 Perform a POR.
Does the error remain when the power is turned off/on?
Replace the
scanner
controller card
assembly.
Go to
“Scanner
controller card
assembly
removal” on
page 4-151.
Problem
solved.
Step Check Yes No
1 Check the scanner cooling fan operation.
Perform the scanner cooling fan test.
Remove the rear upper cover. Go to “Rear upper cover
removal” on page 4-15.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Scanner Motor Tests.
4. Touch Scanner cooling fan.
Does the scanner cooling fan speed increase when the test is
performed?
Go to step 2. Replace the
scanner
controller card
assembly.
Go to “Scanner
controller card
assembly
removal” on
page 4-151.
2 Check the scanner cooling fan for connection.
Is the above fan connected properly?
Replace the
scanner cooling
fan.
Go to “Scanner
cooling fan
removal” on
page 4-164.
Replace the
connection.
Step Check Yes No