Lexmark W840 - HCF Unit Docking Failure or Tray 5 Set Failure

2-80 Options Service Manual
4024-XXX
HCF unit docking failure or tray 5 set failure
Step Check Yes No
1 Check the HCF unit for proper installation.
Is the HCF unit installed to the printer correctly?
Go to step 2. After reinstalling, go
to step 2.
2 Check the switch (HCF unit docking interlock) for
damage.
Is the switch (HCF unit docking interlock) damaged?
Go to step 3. Replace the switch
(HCF unit docking
interlock).
Go to “HCF switch
(unit docking
interlock) removal”
on page 4-151.
3 Check the switch (HCF unit docking interlock) for proper
operation.
1. Enter Diagnostics mode.
2. Select INPUT TRAY TESTS.
3. Select Sensor Tests.
4. Select Tray 5.
5. Select HCF unit docking.
Pull the HCF unit from the printer.
Does the display on the screen change every time the
actuator on the above switch operates?
Go to step 5. Go to step 4.
4 Check the switch (HCF unit docking interlock) for proper
connection.
Is the above switch connected properly?
Replace the switch
(HCF unit docking
interlock).
Go to “HCF switch
(unit docking
interlock) removal”
on page 4-151.
Replace the
connection.
5 Check the sensor (HCF media tray set) for proper
operation.
1. Enter Diagnostics mode.
2. Select INPUT TRAY TESTS.
3. Select Sensor Tests.
4. Select Tray 5.
5. Select Tray set.
Pull the HCF media tray assembly out.
Does the display on the screen change every time the
actuator on the above switch operates?
Go to step 7. Go to step 6.
6 Check the sensor (HCF media tray set) for proper
connection.
Is the above sensor connected properly.
Replace the sensor
(HCF media tray
set).
Go to “HCF sensor
(HCF media tray
set) removal” on
page 4-121.
Replace the
connection.