Kyocera KM-2020

2C9-2
1-5-30
Problem Causes Check procedures/corrective measures
(12)
The exposure lamp
does not turn off.
(13)
The fixing heater
does not turn on
(C6000).
(14)
The fixing heater
does not turn off.
(15)
Main charging is not
performed.
(16)
Transfer charging is
not performed.
(17)
No developing bias
is output.
(18)
The original size is
not detected.
(19)
The original size is
not detected cor-
rectly.
Defective inverter PCB.
Defective engine PCB.
Broken wire in fixing
heater M or S.
Fixing thermostat trig-
gered.
Broken fixing thermistor
wire.
Dirty sensor part of the
fixing thermistor.
Broken main charger wire.
Leaking main charger
housing.
Poor contact in the high-
voltage PCB connector
terminals.
Defective engine PCB.
Defective high- voltage
PCB.
Poor contact in the high-
voltage PCB connector
terminals.
Defective engine PCB.
Defective high-voltage
PCB.
Poor contact in the high-
voltage PCB connector
terminals.
Defective engine PCB.
Defective high-voltage
PCB.
Defective original detec-
tion switch.
Original is not placed cor-
rectly.
Poor contact in the original
size detection sensor con-
nector terminals.
Defective original size de-
tection sensor.
If the exposure lamp does not turn off with YC1-1 and YC1-6 on
the inverter PCB high, replace the inverter PCB.
If YC17-1 and YC17-6 on the engine PCB are always low, re-
place the engine PCB.
Check for continuity across each heater. If none, replace the
heater M or S.
Check for continuity across thermostat. If none, remove the
cause and replace the thermostat.
Measure the resistance. If it is ∞ Ω, replace the fixing thermistor.
Check visually and clean the thermistor sensor parts.
See page 1-5-21.
See page 1-5-21.
See page 1-5-21.
If the level of YC18-5 on the engine PCB does not change when
the original detection switch is turned on and off, replace the
original detection switch.
Check the original and correct if necessary.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Check if sensor operates correctly. If not, replace it.