Ricoh G035 Service Manual page 275

SC350-3: ID Sensor Error 3
Definition [D]
The ID sensor pattern edge voltage is detected to be not 2.5 V twice
consecutively during an 800 ms interval.
Possible Causes
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• High voltage supply board defective
• Dirty ID sensor
• Defect at the ID sensor pattern writing area of the drum
SC350-4: ID Sensor Error 4
Definition [D]
One of the following ID sensor output voltages is detected at ID sensor
initialization.
1) Vsg < 4.0 V when the maximum PWM input (255) is applied to the ID
sensor.
2) Vsg ≥ 4.0 V when the minimum PWM input (0) is applied to the ID sensor.
Possible Causes
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• High voltage supply board defective
• Dirty ID sensor
• Defect at the ID sensor pattern writing area of the drum
SC350-5: ID Sensor Error 5
Definition [D]
Vsg falls out of the adjustment target (4.0 ± 0.2 V) during Vsg checking.
Possible Causes
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• High voltage supply board defective
• Dirty ID sensor
• Defect at the ID sensor pattern writing area of the drum
SM
SERVICE CALL CONDITIONS
7-5 G035