A3: Fuser Heater Disconnection - Mita DP-2800 Service Manual

5A2

A3: Fuser heater disconnection

Meaning
Either or both heater
lamp(s) is blown out.
A3
Remove fuser unit.
Measure the resistance
across primary terminals
(See right fig.) of fuser
connector.
Less than 10Ω?
Replace KP-544. If not recovered,
replace KP-564, power supply,
S02069 cable between KP-544 and
power supply, or S02054 cable
between KP-544 and power supply,
in the order of the above.
6-16
Suggested causes
• Blown-out heater lamp(s)
• Defective connection between the
engine board and the low voltage
supply.
• Malfunctioning engine CPU
• Defective heater disconnection
sensor circuit in the low voltage
supply
• Defective thermo-cut (Replace the
fuser unit.)
No
Yes
Replace KP-544. Re-
place KP-564. Check/
replace S02054 cable.
Replace fuser unit.
Replace fuser unit.
Corrective action
1
2