Scanner Unit Assembly Eeprom Sub System Failure; Scanner Cooling Fan Failure - Lexmark X850e Service Manual

Step
2 Perform a POR.
Does the error remain when the power is turned off/on?

843.22 Scanner unit assembly EEPROM sub system failure

Step
1 Check the connection of each scanner controller card
assembly connector.
Are the connectors of the scanner controller card
assembly connected properly?
2 Perform a POR.
Does the error remain when the power is turned off/on?

843.23 Scanner cooling fan failure

Step
1 Check the scanner cooling fan operation.
Perform the scanner cooling fan test.
Remove the rear upper cover. Go to
removal" on page
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?
2 Check the scanner cooling fan for connection.
Is the above fan connected properly?
Check
Check
Check
"Rear upper cover
4-15.
Yes
Replace the Problem solved.
ADF controller
card assembly.
Go to "ADF
controller card
assembly
removal" on
page 4-167.
Yes
Go to step 2. Connect each
connector of
the scanner
controller card
assembly
properly.
Replace the Problem
scanner solved.
controller card
assembly.
Go to
"Scanner
controller card
assembly
removal" on
page 4-143.
Yes
Go to step 2. Replace the
scanner
controller card
assembly.
"Scanner
Go to
controller card
assembly
removal" on
page 4-143.
Replace the Replace the
scanner cooling connection.
fan.
Go to "Scanner
cooling fan
removal" on
page 4-156.
Diagnostic information
7500-XXX
No
No
No
2-137