SERVICE CALL CONDITIONS
B234/B235/B236/D101/D102/D103
4-26
SM
Toner Collection Unit Lock
SC487
B
The toner collection coil rotation
sensor did not detect rotation of
the coil within 5 s after the drum
motor turned on due to toner
clumping in the collection unit.
•
Empty or replace the toner collection
bottle.
•
Enter “0” in SP2-950-001 and cycle the
machine OFF/ON.
NOTE
:
•
The drive gear that drives the cleaning and toner transport mechanism is
equipped with a torque limiter. If the rotation of the toner collection coil becomes
overloaded, the torque limiter disengages the drive gear.
•
The sensor (a photo interrupter) detects the change in the position of the gear,
which triggers the error.
•
SC487 code will occur after 8K pages have been fed after a message alerts the
operator that the toner collection unit needs to be replaced. After the 8K pages
have fed, the machine will stop.
2nd Cleaning Blade Operation Error
SC488
C
The push-switch signal from the
cleaning blade solenoid was incorrect.
The signal is detected 1 sec. after the
solenoid operates.
•
2nd blade solenoid connector
loose, broken defective
•
2nd blade solenoid defective
•
Release mechanism defective
Drum Cleaning Unit Set Error
SC489
C
The drum cleaning unit is not set
properly. The drum cleaning unit set
switch is set every time the machine is
turned on and when the front doors are
closed.
1. Remove the drum cleaning unit
2. Install it again.
3. Close the front doors
4. Cycle the machine off/on
Polygonal Mirror Motor Cooling Fan Motor Lock
SC491
B
The polygonal mirror motor cooling fan
motor lock signal remains HIGH for 5 s
while the polygonal mirror motor cooling
fan motor is on.
•
Drive mechanism overload
•
Obstruction has stopped the fan
•
Fan connector loose, broken,
defective
Development Unit Suction Motor Lock
SC492
B
While the development unit toner suction
motor is operating, the lock sensor
output did not change for 1 s An
electrical overload in the PCB inside the
motor unit has caused the motor to
malfunction.
•
Replace the motor.
