Lexmark W840 - Duplex Controller Card Assembly Type Failure; Duplex Left Door Assembly Open

2-90 Options Service Manual
4024-XXX
997.00 Duplex controller card assembly type failure
Duplex left door assembly open
3 Perform a 2 sided print test.
Does the error still occur?
Replace the duplex
controller card
assembly.
Go to “Duplex
controller card
assembly removal”
on page 4-181.
Go to step 4.
Problem solved.
4 Perform a 2 sided print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Refer to the Printer
Service Manual.
Problem solved.
Step Check Yes No
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?
Go to step 2. Problem solved.
2 Perform a 2 sided print test.
Does the error still occur?
Replace the duplex
controller card
assembly.
Go to “Duplex
controller card
assembly removal”
on page 4-181.
Go to step 3.
Problem solved.
3 Perform a 2 sided print test.
Does the error still occur?
Replace the printer
engine card
assembly.
Refer to the Printer
Service Manual.
Problem solved.
Step Check Yes No
1 Check the duplex left door assembly for opening and
closing.
Does the duplex left door assembly open or close
normally?
Go to step 2. Check the duplex
left cover assembly
for deformation and
reinstall it.
Step Check Yes No