Lexmark MX71X - Mailbox Undetected Service Check

Action Yes No
Step 6
Open the rear door and check the two sensors (pass through) for proper
operation. Enter Diagnostics Menu and navigate to:
Output bin tests > Sensor test
Select the output bin assigned to the mailbox option.
Does the display on the operator panel change every time the sensing
area of the sensors are interrupted or blocked?
Go to step 8. Go to step 7.
Step 7
a Open the rear door and check the sensors (pass through):
• Make sure the sensor is aligned and seated properly.
• Check the sensor and sensor flag for damage. If damaged, then
replace the sensor. See
“Sensor (mailbox pass through) removal”
on page 835.
b Reseat the sensor connections (J3T and J3B) on the controller board.
POR the machine.
Does the error remain?
Go to step 8. The problem is solved.
Step 8
Reseat all the connectors on the controller board, then POR the machine.
Does the error remain?
Replace the controller
board. See
“Mailbox
controller board
removal” on page
809.
If the error persists,
then replace the
mailbox. See
“Mailbox
option removal” on
page 791.
The problem is solved.
Mailbox undetected service check
Action Yes No
Step 1
Check the auto connector end of the printer below the mailbox.
Is it free of damage?
Go to step 2. Replace the upper
interface cable of the
printer.
Step 2
Check the lower interface cable. If damaged, replace the lower interface
cable. See
“Mailbox lower interface cable removal” on page 812.
Reseat the connector J1A on the controller board, then POR the machine.
Does the error remain?
Go to step 3. The problem is solved.
7463
Diagnostic information
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