Scanner Carriage Over Run Failure; Adf Ram Test Failure; Adf Eeprom Failure - Lexmark X850e Service Manual

7500-XXX

843.01 Scanner carriage over run failure

Step
1 Check the connections of the scanner controller card
assembly.
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?

843.10 ADF RAM test failure

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

843.11 ADF EEPROM failure

Step
1 Check the connection of each ADF controller card assembly
connector.
Is each connector of ADF controller card assembly connected
properly?
2-134
MFP Service Manual
Check
Check
Check
Yes
Go to step 2. Connect each
connector of the
scanner
controller card
assembly
properly.
Replace the Problem solved.
scanner
controller card
assembly.
Go to "Scanner
controller card
assembly
removal" on
page 4-143.
Yes
Replace the ADF Connect the ADF
controller card controller card
assembly. assembly and the
scanner controller
Go to "ADF
card assembly
controller card
properly.
assembly
removal" on
page 4-167.
Replace the Go to step 3.
scanner
controller card
assembly.
Go to "Scanner
controller card
assembly
removal" on
page 4-143.
Yes
Go to step 2. Connect each
connector of ADF
controller card
assembly
properly.
No
No
No