The Exposure Lampdoes Not Turn Off; The Fixing Heater Does Not Turn On (C6000); The Fixing Heater Does Not Turn Off; Main Charging Is Notperformed - Kyocera KM-1650 Service Manual

2DA/2DB
Problem
(12)
The drawer paper
feed clutch* doesnot
operate.
(13)
The cleaning lamp
does not turn on.
(14)
The exposure lamp-
does not turn on.
(15)
The exposure lamp-
does not turn off.
(16)
The fixing heater
does not turn on
(C6000).
(17)
The fixing heater
does not turn off.
(18)
Main charging is not-
performed.
*: 20 ppm model only.
1-5-36
Causes
Broken drawer paper feed-
clutch coil.
Poor contact in the drawer-
paper feed clutch connec-
torterminals.
Defective engine PCB.
Poor contact in the cleaning
lamp connector terminals.
Defective cleaning lamp.
Defective engine PCB.
Poor contact in the expo-
sure lamp connector termi-
nals.
Defective inverter PCB.
Defective engine PCB.
Defective inverter PCB.
Defective engine PCB.
Broken wire in fixing heater
M or S.
Fixing thermostat triggered.
Broken fixing thermistor
wire.
Dirty sensor part of the fix-
ing thermistor.
Broken main charger wire.
Leaking main charger hous-
ing.
Poor contact in the high
voltage PCB connector ter-
minals.
Defective engine PCB.
Defective high- voltage
PCB.
Check procedures/corrective measures
Check for continuity across the coil. If none, replace the drawer
paper feed clutch.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U032 and check if YC8-3 on the drawer
main PCB goes low. If not, replace the drawer main PCB.
Reinsert the connector. Also check for continuity within the con-
nectorcable. If none, remedy or replace the cable.
Check for continuity. If none, replace the cleaning lamp.
If the cleaning lamp turns on when YC3-7,8 on the engine PCB is
held low, replace the engine PCB.
Reinsert the connector. Also check for continuity within the con-
nector cable. If none, remedy or replace the cable.
Run maintenance item U061 and check if the exposure lamp turns
on with YC1-1 and YC1-6 on the inverter PCB go low. If not,
replace the inverter PCB.
Run maintenance item U061 and check if YC17-1 and YC17-6 on
the engine PCB goes low. If not, replace the engine PCB.
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, replace
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 1-5-27.