Kyocera Mita KM-1505 Service Manual page 79

Code Contents
A510 Main charger problem
(C510) • MC ALM signal is detected
continuously for 800 ms when MC
REM signal is turned on.
C610 Broken fixing heater wire
• It takes 15 s or more for the fixing
temperature to reach 50°C/122°F
after the power is turned on or the
safety switch is turned off and on.
• It takes 10 s or more for the fixing
temperature to reach 100°C/212°F
from 50°C/122°F.
• It takes 24 s or more for the fixing
temperature to reach the secondary
stabilization fixing temperature from
the primary stabilization fixing
temperature.
C620 Abnormally low fixing unit
thermistor temperature
• The fixing temperature remains below
90°C/194°F for 10 s during copying.
C630 Abnormally high fixing unit
thermistor temperature
• The fixing temperature exceeds
230°C/446°F for 10 s.
Causes Check procedures/corrective measures
Deformed high- Replace the spring.
voltage
transformer PCB
terminal spring.
Fixing heater Check and reinstall if necessary.
installed
incorrectly.
Broken fixing Check for continuity. If none, replace fixing
heater wire. heater.
Poor contact in Check the connection of connector CN11
the fixing unit on the main PCB and the continuity across
thermistor the connector terminals. Remedy or
connector replace if necessary.
terminals.
Measure the resistance. If it is ∞ Ω, replace
Broken fixing unit
thermistor wire. the fixing unit thermistor.
Fixing unit Check and reinstall if necessary.
thermistor
installed
incorrectly.
Fixing unit Check for continuity. If none, replace the
thermostat fixing unit thermostat.
triggered.
Fixing heater Check and reinstall if necessary.
installed
incorrectly.
Broken fixing Check for continuity. If none, replace fixing
heater wire. heater.
Poor contact in Check the connection of connector CN11
the fixing unit on the main PCB and the continuity across
thermistor the connector terminals. Remedy or
connector replace if necessary.
terminals.
Measure the resistance. If it is ∞ Ω, replace
Broken fixing unit
thermistor wire. the fixing unit thermistor.
Fixing unit Check and reinstall if necessary.
thermistor
installed
incorrectly.
Fixing unit Check for continuity. If none, replace the
thermostat fixing unit thermostat.
triggered.
Measure the resistance. If it is 0 Ω, replace
Shorted fixing unit
thermistor. the fixing unit thermistor.
Broken fixing Replace the power source PCB.
heater control
circuit on the
power source
PCB.
Remarks
2BT
1-5-9