Sensor (Upper Media Exit) On Jam A - Lexmark w850 Service Manual

287.00 Sensor (upper media exit) on jam A

Step Check
1 Check the media path.
1. Open the finisher front door assembly of the
finisher.
2. Remove the top cover and left upper cover.
3. Open the entrance pinch guide assembly upward.
4. Check four media entrance pinch guide pinch rolls
of the entrance pinch guide assembly and media
entrance roll assembly by turning them with your
fingers.
Are the media entrance pinch guide pinch rolls
installed correctly and do they rotate smoothly?
2 Are the four media entrance pinch guide pinch rolls of
the entrance pinch guide assembly and media
entrance roll assembly free of damage?
3 Check the media path.
1. Open the upper pinch guide assembly to the right.
2. Check these items by turning them with your
fingers.
Are the four upper pinch guide pinch rolls of the upper
pinch guide assembly and two upper media transport
roll assemblies installed correctly, meaning do they
rotate smoothly?
4 Are the four upper pinch guide pinch rolls of the upper
pinch guide assembly and two upper media transport
roll assemblies free of damage?
5 Check the sensor (upper media exit) for correct
operation.
Perform the sensor (upper media exit) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Media Path1.
5. Select Upper media exit.
Does the display on the operator panel change every
time the actuator of the sensor (upper media exit) is
operated?
6 Check the sensor (upper media exit) and main sensor
cable assembly connections
Is the above sensor connected properly?
7 Check the drive motor (buffer/transport) by opening the
finisher front door assembly and then closing it.
Does the drive motor (buffer/transport) rotate properly?
Yes No
Go to step 2. Clean or replace
the appropriate
roller, and clean
the media path.
Go to step 3. Clean or replace
the appropriate
roller and clean
the media path.
Go to step 4. Clean or replace
the appropriate
roller and clean
the media path.
Go to step 5. Clean or replace
the appropriate
roller and clean
the media path.
Go to step 7. Go to step 6.
Replace the Replace the
sensor (upper connection.
media exit).
"Sensor (upper
media exit)
removal" on
page 4-104.
Go to step 9. Go to step 8.
Diagnostic information
4024-XXX
2-45