Lexmark W850 - Help Menu

Diagnostic information 2-97
4024-XXX
Stacker lower safety failure
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?
Go to step 9. Go to step 8.
8 Is the sensor (stacker bin level encoder) connected
properly?
Replace the
sensor (stacker
bin level
encoder). Go to
“Sensor
(stacker bin
level encoder)
removal” on
page 4-35.
Replace the
connection.
9 Check the stacker bin lift motor assembly for correct
operation.
Check the above motor by blocking the lower hole in
either of the sensors (stacker bin level). The stacker bin
should lower slightly.
Does the stacker bin lift motor assembly rotate
normally?
Go to step 11. Go to step 10.
10 Is the stacker bin lift motor assembly connected
properly?
Replace the
stacker bin lift
motor assembly.
Go to “Stacker
bin lift motor
assembly
removal” on
page 4-38.
Replace the
connection.
11 Perform a test print.
Does the error still occur?
Replace the
finisher controller
card assembly.
Go to “Finisher
controller card
assembly
removal” on
page 4-118.
Problem solved.
Step Check Yes No
1 Check the vertical transport mechanism of the stacker
bin for obstructions and deformation.
Are there any obstructions in the vertical transport
mechanism of the stacker bin?
Remove
obstructions.
Go to step 2.
2 Is there any deformation in the vertical transport
mechanism of the stacker bin?
Replace
deformed part.
Go to step 3.
Step Check Yes No