Diagnostic information 2-85
4024-XXX
989.00 Stapler unit failure
990.00 Sensor (stapler carriage HP) on failure
Step Check Yes No
1 Check the stapler unit assembly for correct operation.
Perform the staple test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Staple Test.
Does the motor in the stapler unit assembly rotate
normally and staple the media?
Check for staples
and staple jam.
Problem
resolved.
Go to step 2.
2 Is the stapler unit assembly connected properly? Replace the
stapler unit
assembly. Go to
“Stapler unit
assembly
removal” on
page 4-56.
Replace the
connection.
3 Perform a test print stapled document.
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 stapler by moving it with your fingers.
Does the Stapler carriage move smoothly?
Go to step 2. Remove
obstructions.
2 Check the sensor (stapler carriage HP) for correct
operation.
Perform the sensor (stapler carriage HP) test.
1. Enter Diagnostics mode.
2. Select FINISHER TESTS.
3. Select Sensor Tests.
4. Select Punch and Staple.
5. Select Stapler carriage shift HP.
Does the display on the operator panel change every
time the sensing area of the sensor (stapler carriage
HP) is placed to the interrupt flag of the stapler rack
gear by moving the stapler carriage by hand
Go to step 4. Go to step 3.
3 Is the sensor (stapler carriage HP) connected
properly?
Replace the
sensor (stapler
carriage HP). Go
to “Sensor
(stapler carriage
HP) removal” on
page 4-58.
Replace the
connection.
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