Kyocera Mita KM-4530 Service Manual page 174

Code Contents
C5610 Drum surface potential problem 2
• Minimizing the grid output cannot set
the potential.
C6000 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.
C6020 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.
C6030 Broken fixing unit thermistor
• The fixing temperature remains at
0°C/32°F for 30 s continuously when
the fixing heater is on.
C6050 Abnormally low fixing unit ther-
mistor temperature
• The fixing temperature remains below
120°C/248°F for 10 s.
Causes Check procedures/corrective measures
Defective high Replace the high voltage transformer PCB
voltage trans- and check for correct operation.
former PCB.
Poor contact in Check the connection of connector CN25
the fixing unit on the engine PCB and the continuity
thermistor con- across the connector terminals. Repair or
nector terminals. replace if necessary.
Fixing unit ther- Check and reinstall if necessary.
mistor installed
incorrectly.
Fixing unit ther- Check for continuity. If none, replace the
mostat triggered. fixing unit thermostat.
Fixing heater M Check and reinstall if necessary.
and S installed
incorrectly.
Broken fixing Check for continuity. If none, replace the
heater M and S fixing heater M and S.
wire.
Measure the resistance. If it is 0 Ω, replace
Shorted fixing unit
thermistor. the fixing unit thermistor.
Broken fixing Replace the power source PCB and check
heater control cir- for correct operation.
cuit on the power
source PCB.
Poor contact in Check the connection of connector CN25
the fixing unit on the engine PCB and the continuity
thermistor con- across the connector terminals. Repair or
nector terminals. replace if necessary.
Broken fixing unit Check and reinstall if necessary.
thermistor.
Poor contact in Check the connection of connector CN25
the fixing unit on the engine PCB and the continuity
thermistor con- across the connector terminals. Repair or
nector terminals. replace if necessary.
Measure the resistance. If it is ∞ Ω, replace
Broken fixing unit
thermistor wire. the fixing unit thermistor.
Fixing unit ther- Check and reinstall if necessary.
mistor installed
incorrectly.
Fixing unit ther- Check for continuity. If none, replace the
mostat triggered. fixing unit thermostat.
Fixing heater M Check and reinstall if necessary.
and S installed
incorrectly.
Broken fixing Check for continuity. If none, replace the
heater M and S fixing heater M and S.
wire.
Remarks
2BC/D
1-5-29 1-5-31