Sensor (Buffer Path) On Jam B - Lexmark W840 Finisher Service Manual

4024-XXX

283.01 Sensor (buffer path) on jam B

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 the media entrance roll assembly and the
media entrance pinch guide pinch roll attached on
the media entrance pinch guide assembly by
turning them with your fingers.
Are the media entrance roll assembly and the media
entrance pinch guide pinch rolls operating correctly?
2 Are the media entrance roll assembly and the media
entrance pinch guide pinch rolls free of damage, and
rotate smoothly?
3 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 lower pinch guide assembly to the right.
4. Check the buffer roll assembly by turning it with
your fingers.
Is the buffer roll assembly installed correctly, and is it
free of damage and contamination?
4 Are the four buffer pinch guide pinch rolls attached on
the lower pinch guide assembly installed correctly?
5 Check the sensor (diverter gate) for correct operation.
Perform the Diverter gate test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Media Path2.
5. Select Diverter gate.
Does the display on the operator panel change every
time a piece of white media is placed over the sensing
area of the sensor (diverter gate)?
6 Check the sensor (diverter gate) connection.
Is the above sensor connected properly?
2-24
Finisher Service Manual
Yes No
Go to step 2. Clean or replace
the appropriate
rolls and clean
the media path.
Go to step 3. Clean or replace
the appropriate
rolls and clean
the paper path.
Go to step 4. Clean or replace
the appropriate
rolls, and clean
the media path.
Go to step 5. Clean or replace
the appropriate
rolls and clean
the media path.
Go to step 7. Go to step 6.
Replace the After
sensor (diverter reconnecting, go
gate). See to step 7.
"Sensor
(diverter gate)
removal" on
page 4-110.