Lexmark MX81 series Service Manual page 177

Action
Step 7
Re-seat the connectors (J4, J8 and J7) on the controller PCBA.
Does the error remain?
Step 8
Remove the media tray. Manually turn the lift plate drive gear and observe
the lift plate. If the lift plate doesn't move upward, then replace the media
tray. Go to "Media tray assembly removal" on page
With the printer turned on, insert the media tray into the drawer. Viewing
from the rear side of the option, observe the lift plate if it moves up during
the insertion.
Does the lift plate automatically move up?
Step 9
Open the left cover. Do a feed test, enter Diagnostics Menu and navigate
to:
INPUT TRAY TESTS > Feed Test >Tray [x]
Observe the pick/feed motor and the transport motor.
Do the motors run?
Step 10
Re-seat all connectors on the controller PCBA.
Does the error remain?
Yes
Go to step 8.
Go to step 10.
500.
Go to step 10.
Replace the controller
PCBA. Go to
controller PCBA
removal" on page
504.
If the error persists,
then replace the option
tray. Go to
sheet media tray
option removal" on
page 499
Diagnostic information
175
No
The problem is solved.
Go to step 9.
If the pick motor
doesn't run, then
replace the media
feeder. Go to
media feeder
removal " on
page 507.
If the transport motor
doesn't run, then
replace the transport
motor. Go to
transport motor
removal" on page
509.
The problem is solved.
"Drawer
"250/550-
7463
"Drawer
"Drawer