Sheet Controller Board Failure Service Check - Lexmark MX71x Service Manual

Action
Step 8
If the 250/550-sheet tray option is the only input option installed, then
replace the 250/550-sheet tray option. See
option removal" on page
If there are multiple input options, then remove the suspected input
option and install it as Tray 2. Run a print test, navigate to:
Reports > Device Statistics
Does the error remain?

250/550-sheet controller board failure service check

Action
Step 1
Remove all input options and reinstall only the suspected 250/550-sheet
tray option. POR into diagnostics mode and navigate to:
INPUT TRAY TESTS > Feed tests > Tray 2
Does the input option feed normally?
Step 2
Remove the input option from the printer. Check the upper interface
cable. If damaged, then replace the upper interface cable. See
upper interface cable removal" on page
Open the left cover and reseat the connector J1 on the controller board.
POR the machine.
Does the error remain?
Step 3
Check the interface cable of the printer or upper level option for damage.
Is the above component in good condition?
Step 4
Check the connectors on the controller board. If damaged, then replace
the controller board. See "Drawer controller board removal" on
page 653.
Reseat all connectors on the controller board, then POR the machine.
Does the error remain?
"250/550-sheet media tray
648.
654.
Diagnostic information
Yes
Replace the input tray
option. See
sheet media tray
option removal" on
page 648.
Yes
The problem may not
be on this option tray.
Reinstall the remaining
input options one at a
time and test each
option for errors.
Proceed with the
appropriate service
check based on the
error message and the
input option being
tested.
Go to step 3.
"Drawer
Go to step 4.
Replace the controller
board. Go to
controller board
removal" on page
653.
If the error remains,
then go to step 5.
295
No
The problem is solved.
"250/550-
No
Go to step 2.
The problem is solved.
Replace the interface
cable of the printer or
upper level option.
The problem is solved.
"Drawer
7463