Sensor (Punch Carriage Shift Hp) Off Failure - Lexmark W850n Manual

4024-110
Step Check
5 Is the punch carriage shift motor assembly connected
properly?
6 Perform a test print.
Does the error still occur.

985.01 Sensor (punch carriage shift HP) off failure

Step Check
1 Check the punch carriage by moving it with your
fingers.
Does the punch carriage move back and forth
smoothly?
2 Check the sensor (punch carriage shift HP) for correct
operation.
Perform the sensor (punch carriage shift HP) test.
1. Enter the Diagnostic mode.
2. Select FINISHER TESTS.
3. Select Sensor Test.
4. Select Punch and Staple.
5. Select Punch carriage shift HP.
Open the finisher front door assembly.
Move the punch carriage assembly back and forth.
Does the operator panel display change every time the
sensing area of the above sensor is blocked?
3 Check the sensor (punch carriage shift HP)
connection.
Are the connections of the punch sensor cable
assembly properly connected?
2-76
Finisher Service Manual
Yes No
Replace the Replace the
punch carriage connection.
shift motor
assembly. Go to
"Punch carriage
shift motor
assembly
removal" on
page 4-43.
Replace the Problem solved.
printer engine
card assembly.
Refer to the
Printer Service
Manual.
Yes No
Go to step 2. Remove
obstructions.
Go to step 4. Go to step 3.
Replace the Replace the
sensor (punch connection.
carriage shift
HP). Go to
"Sensor (punch
carriage shift
HP) removal" on
page 4-51.