Lexmark X850e Service Manual page 177

Step Check
9 Check the sensor (diverter gate) for proper operation.
Perform the sensor (diverter gate) test.
1. Enter the Diagnostics Menu.
2. Touch FINISHER TESTS.
3. Touch Sensor Test.
4. Touch Media Path 2.
5. Touch Diverter gate.
Open the finisher front door.
Move the lower media guide assembly to the right.
Insert a sheet of white media beneath the media
diverter gate. Then push the media to the sensor
(diverter gate).
Does the operator panel display change every time a
piece of white media is placed over the sensing area of
the sensor (diverter gate)?
10 Check the sensor (diverter gate) connection.
Are the connectors of the diverter gate sensor cable
assembly properly connected?
11 Check the drive motor (entrance/paddle) for proper
operation.
Perform the drive motor (entrance/paddle) test.
Remove the rear upper cover. Go to
cover removal" on page
1. Enter the Diagnostics Menu.
2. Touch MOTOR TESTS.
3. Touch Finisher Motor Tests.
4. Touch Motor (entrance/paddle).
Does the motor (entrance/paddle) operate properly?
12 Check the drive motor (entrance/paddle) connection.
Are the connections of the main drive cable assembly
properly connected?
13 Perform a print test.
Does the error still occur?
"Rear upper
4-101.
Yes No
Go to step 11. Go to step 10.
Replace the Replace the
sensor (diverter connection.
gate).
Go to "Sensor
(diverter gate)
removal" on
page 4-187.
Go to step 13. Go to step 12.
Replace the drive Replace the
motor (entrance/ connection.
paddle).
Go to "Drive
motor
(entrance/
paddle) and belt
(entrance/
paddle)
removal" on
page 4-177.
Replace the Problem solved.
finisher controller
card assembly.
"Finisher
Go to
controller card
assembly
removal" on
page 4-195.
Diagnostic information
7500-XXX
2-109