Sensor (Punch Unit Hp) On Failure - Lexmark W850n Manual

4024-110
Step Check
2 Check the sensor (rear tamper HP) for correct
operation.
Perform the sensor (rear tamper HP) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Media path2.
5. Select Rear tamper HP.
Does the display on the operator panel change every
time the sensing area of the sensor (rear tamper HP) is
blocked?
3 Is the sensor (rear tamper HP) connected properly?
4 Check the rear tamper drive motor by opening the
finisher front door assembly and then closing it.
Does the rear tamper drive motor rotate, and does the
tamper move back and forth?
5 Check the compiler unit cable assembly connection.
Are the connections of the compiler unit cable
assembly correctly connected?
6 Perform a test print.
Does the error still occur?

984.00 Sensor (punch unit HP) on failure

Step Check
1 Check the punch unit by moving it with your fingers.
Does the punch unit move smoothly?
2-72
Finisher Service Manual
Yes No
Go to step 4. Go to step 3.
Replace the Replace the
sensor (rear connection.
tamper HP). Go
to "Sensor (front
tamper HP) and
sensor (rear
tamper HP)
removals" on
page 4-72.
Go to step 6. Go to step 5.
Replace the Replace the
media compiler connection.
unit assembly. Go
to "Media
compiler unit
assembly
removal" on
page 4-69.
Replace the Problem solved.
finisher controller
card assembly.
Go to "Finisher
controller card
assembly
removal" on
page 4-118.
Yes No
Go to step 2. Remove
obstacles.