Lexmark MS312 Service Manual page 49

Action
Step 9
Does the error remain?
Sensor (input) image jam service check
Action
Step 1
Check the LSU cables for proper connection.
Are they properly connected?
Step 2
Inspect the LSU cables and connectors.
Are they free of damage?
Step 3
Check the input sensor cable for proper connection.
Is it properly connected?
Step 4
POR into the Diagnostics menu and perform a feed test:
Diagnostics Menu > Input Tray Tests > Feed Tests > Tray 1
Does it pass the test?
Step 5
POR into the Diagnostics menu and perform a sensor test:
Diagnostics Menu > Base Sensor Test > Input
Does the sensor state on the control panel display change when it is
toggled?
Step 6
Check the controller board for any damage.
Is it free of damage?
Step 7
Does the error remain?
Yes
Contact the next level
of support.
Yes
Go to step 2.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 7.
Contact the next level
of support.
Diagnostic information
49
4514
No
The problem is solved.
No
Reseat the cables.
Replace the LSU. See
"Laser scanning unit
(LSU) removal" on
page 232.
Reseat the cable.
Replace the LSU. See
"Laser scanning unit
(LSU) removal" on
page 232.
Replace the input
sensor. See "Duplex
sensor and input
sensor removal" on
page 211.
Replace the controller
board. See "Controller
board removal" on
page 180.
The problem is solved.