Ricoh D127 - Page 168

No.
Definition
Symptom Possible Cause
-003 A
Time out error
(On the fusing roller inactive)
NOT reaching the reload temperature in
25 seconds after starting heater control.
• Disconnection of Heater After
activation of the anti-overheat
device
(On the fusing roller active)
NOT reaching the reload temperature in
35 seconds after starting heater control.
543 A
Fusing overheat error 1
The fusing temperature detected by the
thermistor is 230°C or higher for one
second.
• Defective the triac (Semiconductor
device)
•
Defective the IOB control board
• Detective the BICU control board
544 A
Fusing overheat error 2
The fusing temperature detected by the
monitor circuit is 250°C or higher.
• Defective the triac (Semiconductor
device)
•
Defective the IOB control board
• Defective the BICU control board
• Uncontrollable fusing condition
545 A
Fusing lamp overheat error
The fusing lamp remains on for 12
seconds after starting the waiting mode.
• Defective thermistor
•
Disconnection of Heater
• After activation of the anti-overheat
device
547 Zero cross signal malfunction
6. Troubleshooting
166