Kyocera Mita KM-2560 Service Manual page 157

Code Contents
C4000 Polygon motor synchronization prob-
lem
The polygon motor does not reach the
stable speed within 20 s of the START
signal turning on.
C4010 Polygon motor steady-state problem
Stable OFF is detected for 5 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.
C6000 Fuser heater break
Fuser thermistor 1 detected less than
40°C/104°F for 10 s during warm-up and
ready in.
C6020 Abnormally high fuser thermistor
center temperature
Fuser thermistor 2 is detected 230°C/
446°F or more for 40 ms.
C6050 Abnormally low fuser thermistor cen-
ter temperature
Fuser thermistor 2 is detected 100°C/
212°F less than 1 s continuously during
copying.
Remarks
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC2 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 YC2 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 YC2 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 fuser Replace the fuser heater M or S.
heater M or S.
Installation defec- Check the mounting state of the fuser ther-
tiveness on fuser mistor 1. If any problem is found, repair it.
thermistor 1.
Defective fuser Replace the fuser 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 ther-
tiveness on fuser mistor 2. If any problem is found, repair it.
thermistor 2.
Defective fuser Replace the fuser thermistor 2.
thermistor 2.
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 ther-
tiveness on fuser mistor 2. If any problem is found, repair it.
thermistor 2.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
2H0/2HZ-1
1-4-25