Ricoh D197 Service Manual page 1107

SC Tables: SC5xx (Paper Feed and Fusing)
SC No. Level
SC561-00 A
SC No. Level
SC562-02 A
SC562-05 D
D197/D198/D199/D200/D201/D202
Error Name/Error Condition/Major Cause/Solution
Pressurized Central Thermistor Disconnection
When the pressurized central thermistor detects a
predetermined temperature or less for specified seconds
consecutively.
Detection period 100ms, detection count: 10 times or more.

Thermistor disconnection

Connector disconnected

Replace the thermistor.

Reset the connector.

Replace the connector.

Replace the fusing unit.
Error Name/Error Condition/Major Cause/Solution
Pressurized Central Thermistor Does Not Reload
Pressurized Central Thermistor Does Not Reload (Low Voltage)
When the pressurized central thermistor does not reach a
predetermined temperature for specified seconds consecutively.

Thermistor dirt

Thermistor deformation, float

Outside input voltage guarantee

After excess temperature rise prevention unit operation

Replace the thermistor.

Make sure that the input voltage is within acceptable limits.

Replace the fusing unit.
6-64 SM