Kyocera Mita KM-4530, Service Manual

Page: 174 / 384

2BC/D
1-5-31
Code Contents
Remarks
Causes Check procedures/corrective measures
C5610
C6000
C6020
C6030
C6050
Drum surface potential problem 2
• Minimizing the grid output cannot set
the potential.
Broken fixing heater wire
• The fixing temperature does not in-
crease for 40 s after the fixing heaters
have been turned on for warming up.
• The fixing temperature remains below
50°C/122°F for 10 s continuously af-
ter the fixing heaters have been
turned on during stabilization.
Abnormally high fixing unit ther-
mistor temperature
• The fixing temperature exceeds
220°C/446 °F for 10 s.
• The fixing unit temperature detection
circuit on the engine PCB detects and
abnormally high temperature.
Broken fixing unit thermistor
• The fixing temperature remains at
0°C/32°F for 30 s continuously when
the fixing heater is on.
Abnormally low fixing unit ther-
mistor temperature
• The fixing temperature remains below
120°C/248°F for 10 s.
Defective high
voltage trans-
former PCB.
Poor contact in
the fixing unit
thermistor con-
nector terminals.
Fixing unit ther-
mistor installed
incorrectly.
Fixing unit ther-
mostat triggered.
Fixing heater M
and S installed
incorrectly.
Broken fixing
heater M and S
wire.
Shorted fixing unit
thermistor.
Broken fixing
heater control cir-
cuit on the power
source PCB.
Poor contact in
the fixing unit
thermistor con-
nector terminals.
Broken fixing unit
thermistor.
Poor contact in
the fixing unit
thermistor con-
nector terminals.
Broken fixing unit
thermistor wire.
Fixing unit ther-
mistor installed
incorrectly.
Fixing unit ther-
mostat triggered.
Fixing heater M
and S installed
incorrectly.
Broken fixing
heater M and S
wire.
Replace the high voltage transformer PCB
and check for correct operation.
Check the connection of connector CN25
on the engine PCB and the continuity
across the connector terminals. Repair or
replace if necessary.
Check and reinstall if necessary.
Check for continuity. If none, replace the
fixing unit thermostat.
Check and reinstall if necessary.
Check for continuity. If none, replace the
fixing heater M and S.
Measure the resistance. If it is 0
Ω
, replace
the fixing unit thermistor.
Replace the power source PCB and check
for correct operation.
Check the connection of connector CN25
on the engine PCB and the continuity
across the connector terminals. Repair or
replace if necessary.
Check and reinstall if necessary.
Check the connection of connector CN25
on the engine PCB and the continuity
across the connector terminals. Repair or
replace if necessary.
Measure the resistance. If it is
∞ Ω
, replace
the fixing unit thermistor.
Check and reinstall if necessary.
Check for continuity. If none, replace the
fixing unit thermostat.
Check and reinstall if necessary.
Check for continuity. If none, replace the
fixing heater M and S.
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