Lexmark W850 - Sensor (Media Eject Clamp HP) on Failure

Diagnostic information 2-77
4024-XXX
986.00 Sensor (media eject clamp HP) on failure
4 Open the finisher front door assembly.
Manually push the punch carriage toward the rear of
the finisher.
Check the punch carriage shift motor assembly by
opening and closing the finisher front door. The punch
carriage should move slightly.
Does the punch carriage shift motor assembly rotate,
and does the punch shift carriage move back and
forth?
Go to step 6. Go to step 5.
5 Is the punch carriage shift motor assembly connected
properly?
Replace the
punch carriage
shift motor
assembly. Go to
“Punch carriage
shift motor
assembly
removal” on
page 4-43.
Replace the
connection.
6 Perform a test print.
Does the error still occur.
Replace the
printer engine
card assembly.
Refer to the
Printer Service
Manual.
Problem solved.
Step Check Yes No
1 Check the media eject clamp by opening the finisher
front door assembly and then closing it.
Does the eject clamp mechanism move smoothly?
Go to step 2. Remove
obstacles.
2 Check the sensor (media eject clamp HP) for correct
operation.
Perform the sensor (media eject clamp HP) test.
Remove the rear upper cover. Go to “Rear upper
cover removal” on page 4-24.
1. Enter the Diagnostic mode.
2. Select FINISHER TESTS.
3. Select Sensor Test.
4. Select Media Path 2.
5. Select Eject clamp HP.
Rotate the eject gears manually by hand.
Does the display on the operator panel change every
time the sensing area of the sensor (media eject
clamp HP) is blocked?
Go to step 4. Go to step 3.
Step Check Yes No