Kyocera TASKalfa 420i - Page 192

2KR/2KS
1-4-34
C4010 Polygon motor steady-state problem
Stable OFF is detected for 20 s continu-
ously after polygon motor stability.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC3 on
the engine PWB and laser scanner unit, and
the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective polygon
motor.
Replace the laser scanner unit.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C4100 BD initialization problem
5 consecutive BD errors were detected
during an 800 ms interval after the poly-
gon motor stabilized.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC3 on
the engine PWB and laser scanner unit, and
the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective polygon
motor.
Replace the laser scanner unit.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C6000 Fuser heater break
Fuser thermistor 1 detected less than
70°C/158°F for 10 s during warm-up and
ready in.
During warm-up, the temperature at the
fuser unit thermistor 1 does not rise by
1°C/1.8°F continuously for 5 s.
Fuser thermistor 2 detected less than
40°C/104°F for 10 s during warm-up and
ready in.
During warm-up, the temperature at the
fuser unit thermistor 2 does not rise by
1°C/1.8°F continuously for 5 s.
Defective fuser
heater 1 or 2.
Replace the fuser heater 1 or 2.
Installation defec-
tiveness on fuser
thermistor 1 or 2.
Check the mounting state of the fuser ther-
mistor 1. If any problem is found, repair it.
Defective fuser
thermostat.
Replace the fuser thermostat.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
C6020 Abnormally high fuser thermistor
temperature
Fuser thermistor 1 or 2 is detected
250°C/482°F or more for 40 ms.
Installation defec-
tiveness on fuser
thermistor 1 or 2.
Check the mounting state of the fuser ther-
mistor 1 or 2. If any problem is found, repair
it.
Defective fuser
thermistor unit 1 or
2.
Replace the fuser thermistor 1 or 2.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
C6030 Fuser thermistor break error
The fuser thermistor break signal is
detected continuously for 1 s.
Installation defec-
tiveness on fuser
thermistor 1 or 2.
Check the mounting state of the fuser ther-
mistor 1 or 2. If any problem is found, repair
it.
Defective fuser
thermistor 1 or 2.
Replace the fuser thermistor 1 or 2.
Defective engine
PWB.
Replace the engine PWB and check for cor-
rect operation.
Code Contents
Remarks
Causes Check procedures/corrective measures