Lexmark X850e Service Manual page 130

7500-XXX
Step Check
2 Check the sensor (stapler carriage HP) for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch FINISHER TESTS.
3. Touch Sensor Test.
4. Touch Punch and Staple.
5. Touch Stapler carriage shift HP.
Does the display on the operator panel change every
time the sensing area of the above sensor is
interrupted or blocked?
3 Is the sensor (stapler carriage HP) properly
connected?
Is the above component properly connected?
4 Check the stapler carriage motor assembly for proper
operation.
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Finisher Tests.
4. Touch Stapler carriage mtr.
5. Touch Forward or Reverse.
Does the above component operate properly?
5 Is the stapler carriage motor assembly properly
connected?
Is the above component properly connected?
6 Perform a POR.
Does the error continue when the power is turned off/
on?
2-72
MFP Finisher Service Manual
Caution: When performing motor tests,
ensure that all cover and door interlock
switches are overridden.
Yes No
Go to step 4. Go to step 3.
Replace the Replace the
sensor (stapler connection.
carriage HP).
Go to "Sensor
(stapler carriage
HP) removal" on
page 4-58.
Go to step 6. Go to step 5.
Replace the Replace the
stapler carriage connection.
motor assembly.
Replace the Problem solved.
finisher controller
card assembly.
"Finisher
Go to
controller card
assembly
removal" on
page 4-116.