Diagnostic information 2-83
4024-XXX
988.01 Sensor (punch unit side reg) off failure
Note: This procedure pertains to sensor punch unit reg1 and reg2.
5 Open the finisher front door assembly.
Manually push the punch carriage toward the rear of
the finisher.
Check the punch carriage shift motor assembly by
opening and 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?
Go to step 7. Go to step 6.
6 Is the punch carriage shift motor assembly connected
properly?
Replace the
punch carriage
shift motor
assembly. Go to
“Punch carriage
shift motor
assembly
removal” on
page 4-43.
Replace the
connection.
7 Perform a test print.
Does the error still occur?
Replace the
printer engine
card assembly.
Refer to the
Printer Service
Manual.
Problem solved.
Step Check Yes No
1 Check the punch carriage by moving it with your
fingers.
Does the punch carriage move back and forth
smoothly?
Go to step 2. Remove
obstructions.
2 Check the sensor (punch unit side reg1) for correct
operation.
Perform the sensor (punch unit side reg1) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Punch and Staple.
5. Select Punch side reg1.
Open the finisher front door.
Insert a fragment of a sheet of white media under the
sensor (punch unit side reg1).
Does the display on the operator panel change every
time a piece of white media is placed over the sensing
area of the sensor (punch unit side reg1)?
Go to step 3. Go to step 4.
Step Check Yes No
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