Kyocera Mita KM-3530 Service Manual page 177

Code Contents
C4010 Polygon motor steady-state problem
• The polygon motor rotation is not sta-
ble for 600 ms after the polygon mo-
tor rotation has been stabilized.
C4200 BD steady-state problem
• The VTC detects a BD error for 600
ms after the polygon motor rotation
has been stabilized.
C5300 Broken cleaning lamp wire
While the cleaning lamp is on, the bro-
ken cleaning lamp wire detection signal
is detected for 2 s continuously.
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
after the fixing heaters have been
turned on during stabilization.
C6020 Abnormally high fixing unit thermis-
tor temperature
• The fixing temperature exceeds 230
°C/446 °F for 10 s.
Causes Check procedures/corrective measures
Poor contact in Reinsert the connector. Also check for con-
the polygon motor tinuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Defective polygon Replace the LSU (see page 1-6-20).
motor.
Defective power Check if 24 V DC is supplied to CN2-1 on
source PCB. the main PCB. If not, replace the power
source PCB.
Defective main Check if 24 V DC is output from CN8-10 on
PCB. the main PCB. If not, replace the main
PCB.
Defective laser Replace the LSU (see page 1-6-20).
diode.
Defective polygon Replace the LSU (see page 1-6-20).
motor.
Defective main Replace the main PCB and check for cor-
PCB. rect operation.
Defective cleaning Replace the cleaning lamp.
lamp.
Defective main Replace the main PCB and check for cor-
PCB. rect operation.
Poor contact in Check the connection of connector CN10
the fixing unit on the main PCB and the continuity across
thermistor con- the connector terminals. Repair or replace
nector terminals. 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 unit heater Check and reinstall if necessary.
M or S installed
incorrectly.
Broken fixing unit Check for continuity. If none, replace the
heater M or S fixing unit heater M or S (see page 1-6-38).
wire.
Measure the resistance. If it is 0 Ω, replace
Shorted fixing unit
thermistor. the fixing unit thermistor.
Broken fixing unit Replace the power source PCB.
heater control cir-
cuit on the power
source PCB.
Remarks
2BH/J
1-5-35