Ricoh Aficio 220 Service Manual page 301

SERVICE CALL CONDITIONS
SC509: Side fence drive error (optional LCT)
-Definition- [C]
The side fence positioning sensor is not activated for more 3 seconds when the
paper stack in the left tray is moved to the right tray.
The side fence close sensor is not activated for more 3 seconds after moving
the paper stack to the right tray.
- Possible causes -
• Side fence motor defective
• Side fence position sensor defective
• Side fence close sensor defective
• Too much load on the drive mechanism
SC541: Fusing thermistor open
-Definition- [A]
The fusing temperature detected by the thermistor was below 55 °C for 15
seconds or below 75 °C for 20 seconds.
- Possible causes -
• Fusing thermistor defective or out of position
• Fusing lamp open
• Fusing thermofuse open
• Power supply board defective
• Poor connection of the fusing unit
SC542: Fusing temperature warm-up error
-Definition- [A]
The fusing temperature does not reach 155 °C within 60 seconds after the main
switch is turned on.
- Possible causes -
• Fusing thermistor defective or out of position
• Fusing lamp open
• Fusing thermofuse open
• Power supply board defective
• Poor connection of the fusing unit
7-8
20 September 1999