Lexmark X 850 Owners Manual

Diagnostic information2-143
7500-XXX
845.02 CCD initialization (lamp off) failure
846.00 Scanner communication failure
5 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 4-143.Problem solved.
Step Check Yes No
1 Check the connection of the scanner controller card 
assembly.
Are the connectors of the scanner controller card assembly 
connected properly?Go to step 2. Connect...

2-144MFP Service Manual 7500-XXX
846.01 Scanner communication failure
846.10 Sensor (ADF width APS X) failure
3 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 4-143.
Go to step 4.Problem solved.
Step Check Yes No
1 Check the scanner interface cable assembly connection 
between the RIP card assembly and the scanner unit 
assembly.
Is the scanner interface cable assembly...

Diagnostic information2-145
7500-XXX
2 Check the sensor (ADF width APS 1) for connection.
Is the above sensor connected properly?Replace the 
sensor (ADF 
width APS 1). 
Go to “Sensor 
(ADF width 
APS 1)” on 
page 4-184.Replace the 
connection.
3 Check the sensor (ADF width APS 2) for operation. 
Perform the sensor (ADF width APS 2) test.
Open the ADF left cover assembly.
1. Enter the Diagnostics Menu.
2. Touch SCANNER TESTS.
3. Touch Sensor Tests.
4. Touch ADF width APS 2.
Operate the actuator of the...

2-146MFP Service Manual 7500-XXX
846.12 Scanner unit assembly software logic failure
846.13 Switch (platen interlock) open
Step Check Yes No
1 Check the software version for the scanner controller card 
assembly.
Is the version of the software of the scanner controller card 
assembly correct?Go to step 2. Upgrade the 
software of the 
scanner controller 
card assembly.
2 Perform a POR.
Does the error remain when the power is turned off/on?Replace the 
scanner 
controller card 
assembly. 
Go to 
“Scanner...

Diagnostic information2-147
7500-XXX
847.00 Modem failure
5 Place an undamaged document in the ADF, and perform a 
ADF test.
Does the error remain?Replace the 
scanner 
controller card 
assembly. 
Go to “Scanner 
controller card 
assembly 
removal” on 
page 4-143.Go to step 6.
Step Check Yes No
1 Confirm the configuration ID is set correctly. 
Is the configuration ID set correctly?Go to step 2. Set the 
configuration ID 
correctly.
Go to 
“Configuration 
ID” on 
page 3-20.
2 Check the fax interface card...

2-148MFP Service Manual 7500-XXX
847.01 Fax failure
848.00 Modem failure
Step Check Yes No
1 Perform a POR. 
Does the error remain?Perform format 
fax storage.
Warning: Perfor
ming format fax 
storage will 
erase all fax 
information.
Go to “Format 
Fax Storage” 
on page 3-42.Problem solved.
2 Check the hard drive data and power connections.
Is the hard drive connected properly?Replace the 
hard drive. 
Go to “Hard 
drive removal” 
on page 4-130.Problem solved.
Step Check Yes No
1 Check the fax interface...

Diagnostic information2-149
7500-XXX
849.00 Hard drive failure
900.XX RIP card assembly software failure
903.00 RAM read/write check failure
Step Check Yes No
1 Check the hard drive data and power connections.
Are the above connections connected properly?Replace the 
hard drive.
Go to “Hard 
drive removal” 
on page 4-130.Replace the 
connections.
2 Perform a POR.
Does the error remain when the power is turned off/on again?Replace the RIP 
card assembly.
Go to “RIP card 
assembly 
removal” on 
page...

2-150MFP Service Manual 7500-XXX
904.00 NVM data failure 
905.00 NVM read/write cannot be executed failure
2 Turn the printer off for 60 seconds.
Does the error occur when the power is turned off/on again?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.
Go to step 3.Problem solved.
3 Perform a print test.
Does the error still occur?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved.
Step Check Yes...

Diagnostic information2-151
7500-XXX
906.00 CPU power to access NVM failure 
907.00 RFID ASIC failure
2 Turn the printer off for 60 seconds.
Does the error occur when the power is turned off/on again?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.
Go to step 3.Problem solved.
3 Perform a print test.
Does the error still occur?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem solved.
Step Check Yes No
1...

2-152MFP Service Manual 7500-XXX
908.00 PPM data failure
909.00 Zero cross failure
3 Check connector P419 on the printer engine card assembly.
Is connector P419 on the printer engine card assembly 
properly connected?Replace the 
printer engine card 
assembly.
Go to “Printer 
engine card 
assembly 
removal” on 
page 4-117.
Go to step 4.Replace the 
connection.
4 Perform a print test.
Does the error still occur?Replace the RIP 
card assembly. 
Go to “RIP card 
assembly 
removal” on 
page 4-128.Problem...