Operator Panel Service Check; Operator Panel Buttons Service Check; Operator Panel Display Service Check - Lexmark T63x Service Manual

4060-xxx

Operator panel service check

Operator panel buttons service check

Before continuing with this service check do the
FRU
1 Operator panel assembly
2 Operator panel assembly
(no buttons work)
3 System board

Operator panel display service check

Service tip: The printer has detected a problem with the system board, operator panel cable or
operator panel assembly if POST does not complete and the printer emits 5 beeps and stops in a
continuous pattern until the printer is turned off. The operator panel cable is an individual cable on
some printers and a combination cable assembly with the cover switch cable on later models.
Note: If the operator panel is operating properly except for a pel or a few pels missing or broken, run
the "LCD Test" on page 3-8
FRU
1 Operator panel cable
2
Operator panel display
blank, 5 beeps, LED off
3 Operator panel display
blank, 5 beeps, LED on
4 Operator panel all
diamonds, no beeps
5 Operator panel all
diamonds, 5 beeps
2-70
Service Manual
"Button Test" on page
Action
If any button fails the Button Test, replace the operator panel
assembly.
If no buttons work, replace the operator panel assembly.
Disconnect the operator panel cable from J15 on the system board
and measure the voltage at J15-5. The voltage should measure
approximately +5 V dc. If incorrect, replace the system board. If
incorrect, replace the cable. If correct, replace the operator panel
assembly.
from the hardware tests before continuing with this service check.
Action
Check for proper installation of the cable at the system board (J15)
and at the operator panel. Check the continuity of the operator panel
cable. If incorrect, replace the cable.
Check for correct installation of the operator panel cable at J15 on
the system board. If incorrect, reinstall the cable properly. If correct,
measure the voltage at J15-2 on the system board. The voltage
should measure approximately +5 V dc. If incorrect, replace the
system board. If correct, check continuity of the operator panel cable.
If the continuity is incorrect, replace the cable. If the continuity is
correct, replace the operator panel assembly.
Check for ground between J15-4 and ground. If correct, replace the
operator panel assembly. If incorrect, replace the system board.
Make sure a card is not plugged in backward. This condition causes
the printer to fail POST, displaying all diamonds on the operator
panel with no beeps.
Check the voltage at Pin J15-1 and J15-3. The voltage measures
approximately +5 V dc. If incorrect, replace the FRUs in the following
order:
• Operator panel assembly
• System board
3-8.