Ricoh D124-17 Service Manual page 613

SC530 D Intake Fan Error
The fan was detected rotating at less than 100 rpm three times at 300 ms
intervals.
SC540 C Vertical HP Sensor Error
Not signal from the vertical HP sensor.
SC571-01 D Head Temperature Sensor Error (Black)
The head temperature sensor near the black sub tanks registered a
temperature that was out of range.
SC571-02 D Head Temperature Sensor Error (Color)
The head temperature sensor near the color sub tanks registered a
temperature that was out of range.
• Roll paper feed motor harness loose, broken, defective
• Encoder sensor harness or encoder wheel loose, broken, defective
• Motor defective
• MCU defective
• Fan harness loose, broken, defective
• Fan defective
• MCU defective
• Edge of the wheel is dirty and requires cleaning
• Edge of the vertical wheel not positioned in sensor gap
• Sensor connection loose, broken, defective
• Sensor defective
• Connection loose, broken, defective at CN138
• After correcting the problem, cycle the machine off/on
• Connection loose, broken, defective at CN138
• After correcting the problem, cycle the machine off/on
• Sensor defective
SC500: Paper Feed, Transport
611