Lexmark W840 - Page 147

Diagnostic information 2-91
4024-XXX
2 Check the switch (duplex left door interlock) for proper
operation.
1. Enter Diagnostics mode.
2. Select DUPLEX TESTS.
3. Select Sensor Tests.
4. Select Door D duplex left.
Open the duplex left door assembly, and visually check
it.
Does the operator panel change every time the actuator
on the above switch operates?
Reconnect the
connector on the
printer engine card
assembly.
Go to step 3.
3 Check the switch (duplex left door interlock) for proper
connection.
Is the above switch connected properly?
Go to step 4. Replace the
connection.
4 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?
Go to step 5. Replace the
connection.
5 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 6.
Problem solved.
6 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