Kyocera TASKalfa 220 - Page 127

2KL/2KK
1-4-19
C4000 Polygon motor synchronization prob-
lem
The polygon motor does not reach the
stable speed within 20 s of the START
signal turning on.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC3 on
the main/engine PWB and laser scanner
unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective polygon
motor.
Replace the laser scanner unit.
Defective main/
engine PWB.
Replace the main/engine PWB and check
for correct operation.
C4010 Polygon motor steady-state problem
Stable OFF is detected for 5 s continu-
ously after polygon motor stability.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC3 on
the main/engine PWB and laser scanner
unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective polygon
motor.
Replace the laser scanner unit.
Defective main/
engine PWB.
Replace the main/engine PWB and check
for correct operation.
C4200 BD steady-state problem
ASIC detects a BD error for 600 ms after
the polygon motor rotation has been sta-
bilized.
Poor contact in the
connector termi-
nals.
Check the connection of connector YC3 on
the main/engine PWB and laser scanner
unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective laser
scanner unit.
Replace the laser scanner unit.
Defective main/
engine PWB.
Replace the main/engine PWB and check
for correct operation.
C6000 Fuser heater break
The temperature does not reach 70 °C/
158°F in 15 s before secondary stabiliza-
tion.
Temperature rise of 1°C/1.8°F does not
occur in 5 s before secondary stabiliza-
tion (except during printing).
Poor contact in the
fuser thermistor
connector termi-
nals.
Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Fuser thermistor
installed incor-
rectly.
Check and reinstall if necessary.
Fuser thermostat
triggered.
Check for continuity. If none, replace the
fuser thermostat.
Fuser heater
installed incor-
rectly.
Check and reinstall if necessary.
Broken fuser
heater wire.
Check for continuity. If none, replace the
fuser heater.
C6020 Abnormally high fuser thermistor
temperature
Fuser thermistor is detected 230°C/
446°F or more for 40 ms.
Shorted thermistor. Measure the resistance. If it is 0 Ω, replace
the thermistor.
Broken heater con-
trol circuit on the
power source
PWB.
Replace the power source PWB and check
for correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures