2-82
Finisher Service Manual
4024-110
988.00 Sensor (punch unit side reg) on failure
Note: This procedure pertains to sensor punch unit reg1 and reg2.
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.
3
Check the sensor (punch unit side reg2) for correct
operation.
Perform the sensor (punch unit side reg2) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Punch and Staple.
5. Select Punch side reg2.
Open the finisher front door.
Insert a fragment of a sheet of white media under the
sensor (punch unit side reg2).
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 reg2)?
Go to step 5.
Go to step 4.
4
Check the appropriate sensor (punch unit side reg)
connection.
Is the above sensor connected properly?
Replace the
appropriate
sensor (punch
unit side reg). Go
to
“Sensor
(punch unit side
registration
pair) with
bracket
removal” on
page 4-44
.
Replace the
connection.
Содержание W850dn
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