SERVICE CALL
10 February 2005
4-4
No.
Definition
Symptom Possible
Cause
LD error
241 D
An LD error continues for 0.5
seconds. (After an LD error is
detected, an LD error release is
written to the GAVD chip during
monitoring.)
•
Defective LD unit
Image transfer belt mark detection error
280 D
•
An imaging process starts.
→
No
belt mark for the first color is
detected within 5 seconds.
•
A color imaging process starts.
→
A belt mark other than the one for
the first color is not detected within
8 seconds after a former belt mark
has been detected.
•
Defective BICU
•
Poor electrical connection between
sensor and BICU
GAVD communication error
282 D
Data is transferred.
→
The status
register in the BICU does not get to
the ready condition within 10
milliseconds.
•
Defective BICU
Charge corona unit electrical leak
300 D
The supply to the charge corona unit
is continuously output, and the unit is
operating at the minimum PWM duty
value.
→
1 Volt (or more) returns for
300 milliseconds.
•
Short circuit in the charge corona unit
•
Defective high voltage supply board
•
Defective harness (BICU - high voltage
supply board)
Charge grid electrical leak
302 D
The returning voltage N from the OPC
unit is detected for 60 ms.
N
≥
1/2 output value
•
Defective PCU installation (OPC belt)
•
Short circuit in the charge grid
•
Defective high voltage supply board
•
Defective harness (BICU - high voltage
supply board)
Charge corona unit cleaner error
305 D
•
Cleaning starts.
→
The lock signal
is not detected within 30 seconds.
•
Cleaning starts.
→
The cleaner
starts to turn.
→
The lock signal is
detected within 6 seconds.
•
The lock signal is detected while
the unit is moving away from the
home position.
→
The next lock
signal is detected within 6 seconds
after the unit has turned toward the
home position.
•
Defective PCU installation (OPC belt)
•
Defective cleaner
•
Incorrect charge corona unit installation
•
Toner fallen into the cleaner drive
mechanism
Development short circuit error
350 D
A development process starts.
→
The
returning voltage stays at 1V or less
within 0.48 seconds.
•
Short circuit in the development unit
•
Defective high voltage supply board
•
Defective harness (BICU - high voltage
supply board)
