-Definition- [B]
The scanner home
position sensor does not detect
the off condition
during
initialization or copying.
- Possible causes
-
·
Scanner home
position sensor defective
·
Scanner drive
motor defective
·
IOSCC board
defective
·
Scanner home
position sensor harness
defective
SC121: Scanner home
position error 2
-Definition- [B]
The scanner home
position sensor does not detect
the on condition
during
initialization or copying.
- Possible causes
-
·
Scanner home
position sensor defective
·
Scanner drive
motor defective
·
IOCSS board
defective
·
Scanner home
position sensor harness
defective
SC122: Scanner home
position error 3
-Definition- [B]
The scanner home
position sensor detects the on
condition while the
scanner is
returning to the home position.
- Possible causes
-
·
Scanner home
position sensor defective
·
Scanner drive
motor defective
·
IOCSS board
defective
·
Scanner home
position sensor harness
defective
SC CODE
DESCRIPTIONS 1 August 1996
SC123: Scanner home
position error 4
-Definition- [B]
The scanner home
position sensor does not detect
the on condition after
the scanner
returns to the home position.
- Possible causes
-
·
Scanner home
position sensor defective
·
Scanner drive
motor defective
·
IOCSS board
defective
·
Scanner home
position senor harness defective
SC192: Automatic SBU
adjustment error
-Definition- [B]
An error is
detected during automatic SBU
adjustment.
- Possible cause
-
·
SBU defective
·
BiCU board
defective
·
Lamp regulator
defective
·
Exposure lamp
deective
·
Dirty white plate
SC302: Charge roller current
leak
-Definition- [B]
A charge roller
current leak signal is detected.
- Possible causes
-
·
Charge roller
damaged
·
Charge high
voltage supply board defective
·
Poor connection
of the PCU
1 August 1996 SC
CODE DESCRIPTIONS
SC306: Charge roller
home position error
-Definition- [B]
The charge roller
contact sensor does not detect
the on condition.
- Possible causes
-
·
Charge roller
contact sensor defective
·
Charge roller
contact clutch defective
SC320: Polygon motor
error
-Definition- [B]
The polygon motor
does not reach its operating
speed within 10 seconds
after the polygon
motor on signal, or the lock
signal is not detected for
more than 40 ms
continuously during operation.
- Possible causes
-
·
Polygon motor
defective
·
Poor connection
of the interface harness which
connects the polygon
motor driver and
the IOCSS board
·
IOCSS board
defective
SC321: No laser start signal
(F-GATE error)
NOTE:
This SC code is
only for copy mode.
- Definition- [B]
The CPU does not
detect the laser start signal
(F-GATE) after the copy
paper reaches the
registration sensor.
- Possible causes
-
·
BiCU board
defective
·
MSU board
defective
SC322: Laser
synchronization error
-Definition- [B]
The laser
synchronization signal cannot be
detected by the main scan
synchroniziation
detector board for more than 5
consecutive 100 intervals.
- Possible causes
-
·
Poor connection
of the interface harness which
connects the laser
synchronization
detector board and the BiCU
board
·
Laser
synchronization detector board
out of position
·
Laser
synchronization detector board
defective
·
BiCU board
defective
SC324: LD drive
current over
-Definition- [B]
The LD drive
board applies more than 100 mA
to the LD.
- Possible causes
-
·
LD unit defective
(not enough power, due to aging)
·
Poor connection
of the interface harness which
connects the LD unit and
the BiCU board
·
Temperature
around the LD unit is too high
SC390: TD sensor
error 1
-Definition- [B]
The TD sensor
outputs less than 0.5V, 20 s
after the TD sensor initial
setting has been
performed.
- Possible causes
-
·
TD sensor
abnormal
·
Poor connection
of the PCU
SC391: Development
bias leak
-Definition- [B]
A development
bias leak signal is detected.
- Possible causes
-
·
Poor connection
of the PCU
·
High voltage
supply board defective
SC393: TD sensor
error 2
-Definition- [B]
TD sensor output
voltage falls out of the
adjustment range (2.0
±
0.2 V)
after the TD
sensor initial setting has been
finished.
- Possible causes
-
·
TD sensor
abnormal
·
Poor connection
of the PCU
SC401: Transfer
roller leak error 1
SC402: Transfer
roller leak error 2
-Definition- [B]
A transfer roller
current leak signal is detected.
- Possible causes
-
·
High voltage
supply board defective
·
Poor connection
of the PCU
·
Transfer roller
damaged
SC411: Separation
bias error
-Definition- [B]
A separation bias
leak signal is detected.
- Possible causes
-
·
High voltage
supply board defective
·
Poor connection
of the PCU
·
Discharge brush
defective
SC500: Main motor
lock
-Definition- [B]
A main motor lock
signal is detected for more than
5 seconds or the lock
signal is not
detected for more than 500 ms
during rotation.
- Possible causes
-
·
Too much load on
the drive mechanism
·
Main motor
defective
SC503: Upper tray
lift motor malfunction (optional
paper tray unit only)
SC504: Lower tray
lift motor malfunction (optional
paper tray unit only)
-Definition- [C]
The paper upper
limit sensor is not activated
after the tray lift motor has
been on for 10
seconds.
- Possible causes
-
·
Upper limit
sensor defective
·
Tray lift motor
defective
·
IOCSS board
defective
SC506: Paper tray
unit main motor lock (optional paper
tray unit
only)
-Definition- [C]
A main motor lock
signal is detected for more than
5 seconds or the lock
signal is not
detected for more than 5 seconds
during rotation.
- Possible causes
-
·
Paper tray unit
main motor defective
·
Too much load on
the drive mechanism
SC542: Fusing
temperature warm-up error
-Definition- [A]
The fusing
temperature does not reach the
fusing standby temperature
within 50 seconds
after the main switch is turned
on.
- Possible causes
-
·
Fusing thermistor
defective or out of position
·
Fusing lamp open
·
Fusing thermofuse
open
·
Power supply
board defective
·
Poor connection
of the fusing unit
SC543: Fusing
overheat error
-Definition- [A]
A fusing
temperature of over 231°C is
detected for 1 second by the
fusing
thermistor.
- Possible causes
-
·
Fusing thermistor
defective
·
Power supply
board defective
SC544: Fusing low
temperature error
-Definition- [A]
A fusing
temperature of lower 100°C is
detected for 1 second by the
fusing thermistor.
- Possible causes
-
·
Fusing thermistor
defective
·
Power supply
board defective
SC546: Fusing ready
temperature malfunction
-Definition- [A]
The fusing
temperature goes 10 °C below or
10 °C over the stand-by
temperature after
warm-up is completed.
- Possible causes
-
·
Thermistor
defective
·
Poor connection
of the fusing unit
·
Power supply
board defective
SC547: Zero cross
signal malfunction
-Definition- [A]
Zero cross
signals are not detected within
a certain period.
- Possible causes
-
·
Power supply
board defective
·
IOCSS defective
·
BICU defective
SC610: Communication
error between IOCSS and duplex unit
-Definition- [B]
The IOCSS board
cannot communicate with the
duplex unit properly.
- Possible causes
-
·
Poor connection
of the duplex unit
·
IOCSS board
defective
·
Duplex control
board defective
SC691: Communication
error between BICU and fax
controller
-Definition- [B]
The BiCU board
cannot communicate with the fax
controller properly.
- Possible causes
-
·
Poor connection
of the interface harness which
connects the BiCU board
and the fax
controller
·
BICU board
defective
·
Fax controller
defective
SC692: Communication
error between BiCU and printer
controller
-Definition- [B]
The BICU board
cannot communicate with the
printer controller properly.
- Possible causes
-
·
Poor connection
of the interface harness which
connects the BICU board
and the mother
board.
·
Poor connection
between the mother board and the
printer controller
·
BICU board
defective
·
Printer
controller defective
·
Mother board
defective
SC900: Total counter
error
-Definition- [C]
The total counter
is not working properly.
- Possible causes
-
·
Total counter
defective
·
IOCSS board
defective
SC920: MSU connection
error
-Definition- [B]
The MSU set
signal is not detected
- Possible cause
-
·
Poor connection
between the BICU board and the
MSU
·
BICU board
defective
·
MSU defective
SC921: MSU hardware
error
-Definition- [B]
The hardware of
the MSU is defective
- Possible cause
-
·
MSU defective
·
BICU defective
·
Front door safety
switch does not work properly
SC980: Program
loading error
-Definition- [C]
The program
cannot load properly.
- Possible cause
-
·
Poor connection
between the BICU and the ROM
board
·
BICU board
defective
·
ROM board or the
program defective
SC981: NVRAM clear
error
-Definition- [C]
The data stored
in the NVRAM is not cleared
properly when the Memory
All Clear is
performed.
- Possible cause
-
·
NVRAM defective
SC990: Communication
error between BICU and IOCSS board
-Definition- [B]
The BiCU board
cannot communicate with the
IOCSS board properly.
- Possible cause
-
·
Poor connection
between the BiCU board and the
IOCSS board
·
BiCU board
defective
·
IOCSS board
defective
