Hcf Unit Docking Failure Or Tray 5 Set Failure - Lexmark X850e Service Manual

Step Check
5 Perform a print test.
Does the error still occur?

HCF unit docking failure or tray 5 set failure

Step Check
1 Check the HCF unit for proper installation.
Is the HCF unit installed to the printer properly?
2 Check the switch (HCF unit docking interlock) for
damage.
Is the switch (HCF unit docking interlock) damaged?
3 Check the switch (HCF unit docking interlock) for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch INPUT TRAY TESTS.
3. Touch Sensor Test.
4. Touch Tray 5.
5. Touch 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?
4 Check the switch (HCF unit docking interlock) for proper
connection.
Is the above switch connected properly?
5 Check the sensor (HCF media tray set) for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch INPUT TRAY TESTS.
3. Touch Sensor Test.
4. Touch Tray 5.
5. Touch 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?
Yes No
Replace the printer Problem solved.
engine card
assembly.
Refer to the Printer
Service Manual.
Yes No
Go to step 2. Remove and
reinstall the HCF
unit.
Go to step 3. Replace the switch
(HCF unit docking
interlock).
Go to
(unit docking
interlock) removal"
on page
Go to step 5. Go to step 4.
Replace the switch Replace the
(HCF unit docking connection.
interlock).
Go to "HCF switch
(unit docking
interlock) removal"
on page 4-77.
Go to step 7. Go to step 6.
Diagnostic information
7500-XXX
"HCF switch
4-77.
2-47