Kyocera KM-C2520 Service Manual page 197

Code
C6100 Fuser heater 3 break
Fuser thermistor 2 detected less than
° °
100 C/212 F for 120 s during driving.
Fuser thermistor 2 deduced less than
° °
150 C/302 F for 300 s during driving.
Fuser thermistor 2 deduced less than
° °
100 C/212 F for 5 s during driving.
C6120 Abnormally high fuser thermistor 2
temperature
The fuser temperature exceeds 190
°
374 F.
C6130 Fuser thermistor 2 break error
Fuser thermistor 2 detected less than 40
° °
C/104 F during driving.
When the difference of temperature of
fuser thermistor 1 and 3 becomes 100
° °
C/212 F or more.
C6400 Zero-cross signal error
While fuser heater ON/OFF control is
performed, the zero-cross signal is not
input within 3 s.
C7000 Toner motor problem
The rated speed achievement signal
won't turn to L in 5 s since the motor is
activated. The rated speed achievement
signal turns to H every other 5 s after the
machine is stabilized.
C7101 Toner sensor BK problem
Sensor output value of 78 or less or 944
or more continued for 3 s.
C7102 Toner sensor C problem
Sensor output value of 78 or less or 944
or more continued for 3 s.
Contents
°
C/
Causes Check procedures/corrective measures
Defective fuser Check for continuity across each heater. If
heater 3. none, replace the fuser unit (see page 1-5-
31).
Defective fuser Check for continuity across thermostat. If
thermostat 2. none, remove the cause and replace the
fuser unit (see page 1-5-31).
Measure the resistance. If it is ∞ Ω, replace
Installation defec-
tiveness on fuser the fuser unit (see page 1-5-31).
thermistor 2.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
Measure the resistance. If it is ∞ Ω, replace
Installation defec-
tiveness on fuser the fuser unit (see page 1-5-31).
thermistor 2.
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
Measure the resistance. If it is ∞ Ω, replace
Installation defec-
tiveness on fuser the fuser unit (see page 1-5-31).
thermistor 2.
Defective fuser Check for continuity across each heater. If
heater 3. none, replace the fuser unit (see page 1-5-
31).
Defective PWB. Replace the power source PWB or engine
PWB and check for correct operation.
Defective PWB. Replace the engine PWB or power source
PWB and check for correct operation.
Poor contact in the Check the connection of connector YC30 on
connector termi- the engine PWB and the connector on the
nals. toner motor, and the continuity across the
connector terminals. Repair or replace if
necessary.
Broken the gear. Check visually and replace the gear if nec-
essary.
Defective toner Run maintenance item U135 and check if
motor M/C/Y/BK. the toner motor operates. If not, replace the
toner motor.
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Defective develop- Replace the developing unit BK (see page
ing unit BK. 1-5-26).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
Defective develop- Replace the developing unit C (see page 1-
ing unit C. 5-26).
Defective engine Replace the engine PWB and check for cor-
PWB. rect operation (see page 1-5-32).
2FZ/2F0/2HC-4
Remarks
1-4-37