Exit Interface Card Assembly Communication Failure; Duplex Controller Card Assembly Communication Failure - Lexmark X850e Service Manual

7500-XXX

980.03 Exit interface card assembly communication failure

Step
1 Check the exit interface card assembly for proper
connection.
2 Check the connection between the exit interface card
assembly P430 and the LVPS assembly P526.
Are the cards connected properly?
3 Perform a print test.
Does the error continue?
4 Perform a print test.
Does the error continue?

980.04 Duplex controller card assembly communication failure

Step
1 Check the duplex unit for proper installation.
Remove duplex unit assembly, and reinstall it.
Perform a two sided print test.
Does the error still occur?
2 Check the duplex controller card assembly and printer
engine card assembly for proper connection.
Are the connections on the duplex controller card
assembly and the connector P417 on the printer engine
card assembly connected?
3 Perform a 2 sided print test.
Does the error still occur?
4 Perform a 2 sided print test.
Does the error still occur?
2-178
MFP Service Manual
Check
Check
Yes
Go to step 2. Replace the
connection.
Go to step 3. Replace the
connection.
Replace the exit Problem solved.
interface card
assembly.
Go to "Exit
interface card
assembly
removal" on
page 4-116
Replace the Problem solved.
printer engine cord
assembly.
Go to "Printer
engine card
assembly
removal" on
page 4-117.
Yes
Go to step 2. Problem solved.
Go to step 3. Replace the
connection.
Replace the duplex Problem solved.
controller card
assembly.
Go to "Duplex
controller card
assembly removal"
on page 4-304.
Go to step 4.
Replace the printer Problem solved.
engine card
assembly.
Go to "Printer
engine card
assembly removal"
on page 4-117.
No
No