Ricoh Pro 8300S - Fusing Lamp on Error (Heater 1): Fusing Lamps 1, 2, 3; Hardware High Temperature Detection (Sensor 1); Sc544-02; Sc545-01

1.SC Codes
164
Solution
* Execute "Fusing SC Reset" (SP5-810-001) in SP mode every time you replace components, and then
turn the main power OFF and ON.
Be careful not to bend the pins of the connector.
1. Replace the AC control board.
2. Replace the IOB.
3. Replace the corresponding sensor.
SC544-02
Error Name
Hardware High Temperature Detection (Sensor 1)
Pattern
A
Error Condition
 Heating Roller Center: T5
 Abnormal high temperature above 290°C is detected from the sensor.
(It is not detected when the fusing lamp relay is disconnected.)
Major Cause
 AC control board is defective (loading triac defective).
 IOB is defective (fusing unit control going out of control).
 Thermopile (heating roller center) (SEN58) defective.
Solution
* Execute "Fusing SC Reset" (SP5-810-001) in SP mode every time you replace components, and then
turn the main power OFF and ON.
Be careful not to bend the pins of the connector.
1. Replace the AC control board.
2. Replace the IOB.
3. Replace the corresponding sensor.
SC545-01
Error Name
Fusing Lamp On Error (Heater 1): Fusing Lamps 1, 2, 3
Pattern
A