Lexmark W840 - HCF Top Door Assembly Open

Diagnostic information 2-79
4024-XXX
HCF top door assembly open
4 Perform a 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 HCF top door assembly for deformation.
Does the actuator on the HCF top door assembly
operate the actuator on the HCF top door interlock
switch?
Go to step 2. Replace the HCF
top door assembly.
Go to “HCF top
door assembly
removal” on
page 4-146.
2 Check the switch (HCF top door interlock) for proper
operation.
1. Enter Diagnostics mode.
2. Select BASE SENSOR TESTS.
3. Select Cover and Door.
4. Select Door K HCF top.
Open the HCF top door assembly.
Does the display on the operator panel change every
time the actuator on the above switch operates?
Go to step 9. Go to step 3.
3 Check the switch (HCF top door interlock) for proper
connection.
Is the above switch connected properly?
Replace the switch
(HCF top door
interlock).
Go to “HCF switch
(top door interlock)
removal” on
page 4-147.
Replace the
connection.
4 Perform a print test.
Does the error still occur?
Replace the HCF
controller card
assembly.
Go to “HCF
controller card
assembly removal”
on page 4-152.
Go to step 5.
Problem solved.
5 Perform a 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