Ricoh SP C440dn, Field Service Manual, Page: 635 / 654

No.
Sensor Name/
Sensor Board Name
Active
CN No./
Pin No.
Condition Symptom
4 Paper Feed Sensor L CN101/16
Open Paper is not detected.
Shorted • Paper is detected.
• Jam Y1, Y2, Y3
5
Vertical Transport
Sensor
L CN101/19
Open Paper is not detected.
Shorted • Paper is detected.
• Jam Y1, Y2, Y3
6 Paper Lift Sensor H CN101/7
Open Paper is not detected.
Shorted • Paper is detected.
• Jam Y1, Y2, Y3
7 Paper End Sensor H CN101/4
Open Paper end is detected.
Shorted • Paper end is not
detected.
• Jam Y1, Y2, Y3
Blown Fuse Conditions
Power Supply Unit
Fuse
Rating
Symptom when turning on the main switch
120V-127V 220V-240V
FU1 8A/125V 8A/125V
• 24V power to the BCU and bridge board
not supplied.
• 24VS2 power to the BCU not supplied.
FU2 8A/125V 8A/125V
• 24VS1 power to the BCU not supplied.
• 5VS power to the bridge board not
supplied.
Electrical Component Defects
633