Kyocera KM-3050 Service Manual page 171

Code
C4010 Polygon motor steady-state problem
Stable OFF is detected for 20 s continu-
ously after polygon motor stability.
C4200 BD steady-state problem
ASIC detects a BD error A for 2 s after
the polygon motor rotation has been sta-
bilized.
C5300 Broken cleaning lamp wire
While the cleaning lamp is on, the bro-
ken cleaning lamp wire detection signal
is detected for 2 s continuously.
C6000 Fuser heater break
Fuser unit 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 themistor 1 does not rise by
1°C/1.8°F continuously for 5 s.
Fuser unit 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 themistor 2 does not rise by
1°C/1.8°F continuously for 5 s.
C6020 Abnormally high fuser unit thermistor
temperature
Fuser unit thermistor 1 or 2 is detected
250°C/482°F or more for 40 ms.
C6030 Fuser unit thermistor break error
The fuser unit thermistor break signal is
detected continuously for 1 s.
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC8 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective polygon Replace the laser scanner unit.
motor.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Poor contact in the Check the connection of connector YC8 on
connector termi- the engine PWB and laser scanner unit, and
nals. the continuity across the connector termi-
nals. Repair or replace if necessary.
Defective laser Replace the laser scanner unit.
scanner unit.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Defective cleaning Replace the cleaning lamp.
lamp.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Defective fuser Replace the fuser heater M or S.
heater M or S.
Installation defec- Check the mounting state of the fuser unit
tiveness on fuser thermistor 1. If any problem is found, repair
unit thermistor 1. it.
Defective fuser unit Replace the fuser unit thermostat.
thermostat.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
Installation defec- Check the mounting state of the fuser unit
tiveness on fuser thermistor 1 or 2. If any problem is found,
unit thermistor 1 or repair it.
2.
Defective fuser Replace the fuser unit thermistor 1 or 2.
thermistor unit 1 or
2.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
Installation defec- Check the mounting state of the fuser unit
tiveness on fuser thermistor 1 or 2. If any problem is found,
unit thermistor 1 or repair it.
2.
Defective fuser unit Replace the fuser unit thermistor 1 or 2.
thermistor 1 or 2.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation.
2GN/2GP/2GR-1
Remarks
1-4-31