2GZ/2G1-2
1-4-23
4200 BD steady-state problem
ASIC detects a BD error A for 2 s after
the polygon motor rotation has been sta-
bilized.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC8 on
the engine PWB and laser scanner unit, and
the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective laser
scanner unit.
Replace the laser scanner unit.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
5300 Broken cleaning lamp wire
While the cleaning lamp is on, the bro-
ken cleaning lamp wire detection signal
is detected for 2 s continuously.
Defective cleaning
lamp.
Replace the cleaning lamp.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
6000 Fuser heater break
Fuser unit thermistor 1 is detected 40°C/
104°F below with 10 s continuously dur-
ing warm-up and ready in.
Defective fuser
heater M or S.
Replace the fuser heater M or S.
Installation defec-
tiveness on fuser
unit thermistor 1.
Check the mounting state of the fuser unit
thermistor 1. If any problem is found, repair
it.
Defective fuser unit
thermostat.
Replace the fuser unit thermostat.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
6020 Abnormally high fuser unit thermistor
temperature
Fuser unit thermistor 1 or 2 is detected
230°C/446°F or more for 40 ms.
Installation defec-
tiveness on fuser
unit thermistor 1 or
2.
Check the mounting state of the fuser unit
thermistor 1 or 2. If any problem is found,
repair it.
Defective fuser unit
thermistor 1 or 2.
Replace the fuser unit thermistor 1 or 2.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
6030 Fuser unit thermistor break error
The thermistor break signal is detected
continuously for 500 ms.
Installation defec-
tiveness on fuser
unit thermistor 1 or
2.
Check the mounting state of the fuser unit
thermistor 1 or 2. If any problem is found,
repair it.
Defective fuser unit
thermistor 1 or 2.
Replace the fuser unit thermistor 1 or 2.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
6050 Abnormally low fuser unit thermistor
3 temperature
Fuser unit thermistor 1 is detected
100°C/212°F less than 1 s continuously
during printing.
Defective fuser
heater M or S.
Replace the fuser heater M or S.
Installation defec-
tiveness on fuser
unit thermistor 1.
Check the mounting state of the fuser unit
thermistor 1. If any problem is found, repair
it.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
6400 Zero-cross signal error
While fuser heater ON/OFF control is
performed, the zero-cross signal is not
input within 3 s.
Defective PWB. Replace the engine PWB or power source
PWB and check for correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures