Sensor (Punch Carriage Shift Hp) Off Failure - Lexmark W840 Finisher Service Manual

Step Check
2 Check the sensor (punch carriage shift HP) for correct
operation.
Perform the 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.
Is the above sensor connected properly?
3 Check the sensor (punch carriage shift HP)
connection.
Are the connections of the punch sensor cable
assembly correctly connected?
4 Check the punch carriage shift motor assembly by
opening and then closing the finisher front door. The
punch carriage should move slightly.
Does the punch carriage shift motor assembly rotate,
and does the punch shift carriage move back and
forth?
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?
Yes No
Go to step 4. Go to step 3.
Replace the Replace the
sensor (punch connection.
carriage
shift HP). See
"Sensor (punch
carriage shift
HP) removal" on
page 4-51.
Go to step 6. Go to step 9.
Replace the Replace the
punch carriage connection.
shift motor
assembly. See
"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.
Diagnostic information
4024-XXX
2-69