Lexmark W850n Manual page 86

4024-110
Step Check
4 Is the sensor (stacker bin level 1) connected properly?
5 Check the sensor (stacker bin level 2) for correct
operation.
Perform the sensor (stacker bin level 2) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Bin Level.
5. Select Stacker bin level2.
Does the display on the operator panel change every
time the sensing area of the sensor (stacker bin level 2)
is blocked by putting a piece of media or your finger?
6 Is the sensor (stacker bin level 2) connected properly
7 Check the stacker bin lift motor assembly by blocking
the lower hole in either of the sensor (stacker bin level).
The stacker bin should lower slightly.
Does the stacker bin lift motor assembly rotate
normally?
8 Is the stacker bin lift motor assembly connected
properly?
9 Perform a test print.
Does the error still occur?
2-64
Finisher Service Manual
Yes No
Replace the Replace the
sensor (stacker connection.
bin level 1). Go to
"Sensor
(stacker bin
level 1)
removal" on
page 4-34.
Go to step 7. Go to step 6.
Replace the Replace the
sensor (stacker connection.
bin level 2). Go to
"Sensor
(stacker bin
level 2)
removal" on
page 4-34.
Go to step 9. Go to step 8.
Replace the Replace the
stacker bin lift connection.
motor assembly.
Go to "Stacker
bin lift motor
assembly
removal" on
page 4-38.
Replace the Problem solved.
finisher controller
card assembly.
Go to "Finisher
controller card
assembly
removal" on
page 4-118.