Kyocera KM-2035 Service Manual page 123

Problem
(6) Poor contact in the connec-
The exposure lamp tor terminals.
does not turn on or
Defective inverter PWB.
off.
Defective engine PWB.
(7) Broken wire in fuser heater
The fuser heater M or S.
does not turn on or
Fuser thermostat triggered.
off.
Broken fuser thermistor
wire.
Dirty sensor part of the
fuser thermistor.
(8) Broken main charger wire.
Main charging is not
Leaking main charger hous-
performed.
ing.
Poor contact in the high
voltage PWB connector ter-
minals.
Defective engine PWB.
Defective high- voltage
PWB.
(9) Poor contact in the high
Transfer charging is voltage PWB connector ter-
not performed. minals.
Defective engine PWB.
Defective high-voltage
PWB.
(10) Poor contact in the high
No developing bias is voltage PWB connector ter-
output. minals.
Defective engine PWB.
Defective high-voltage
PWB.
Causes
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 PWB go low. If not,
replace the inverter PWB.
If the exposure lamp does not turn off with YC1-1 and YC1-6 on
the inverter PWB high, replace the inverter PWB.
Run maintenance item U061 and check if YC17-1 and YC17-6 on
the engine PWB goes low. If not, replace the engine PWB.
If YC17-1 and YC17-6 on the engine PWB are always low, replace
the engine PWB.
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
Check visually and clean the thermistor sensor parts.
See page 1-4-20.
See page 1-4-20.
See page 1-4-20.
Check procedures/corrective measures
∞ Ω
, replace the fuser thermistor.
2HA/2HB
1-4-27