Lexmark W850n Manual page 117

Step Check
5 Is the sensor (stacker bin level 2) connected properly?
6 Check the encoder of the sensor (stacker bin level
encoder) installation.
Is the encoder installed correctly?
Does it enter the detection point of the sensor (stacker
bin level encoder)?
7 Check the sensor (stacker bin level encoder) for correct
operation.
Perform the sensor (stacker bin level encoder) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Bin Level.
5. Select Stacker level encod.
Does the operator panel display change when the belt
of the stacker bin lift motor assembly is moved by
hand?
8 Is the sensor (stacker bin level encoder) connected
properly?
9 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?
10 Is the stacker bin lift motor assembly connected
properly?
11 Perform a test print.
Does the error still occur?
Yes No
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 7. After reinstalling,
go to step 7.
Go to step 9. Go to step 8.
Replace the Replace the
sensor (stacker connection.
bin level
encoder). Go to
"Sensor
(stacker bin
level encoder)
removal" on
page 4-35.
Replace the Go to step 10.
finisher controller
card assembly.
Go to "Finisher
controller card
assembly
removal" on
page 4-118.
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.
Diagnostic information
4024-110
2-95