Ricoh D087 MPC3501 AT-C-2.5

Sensors

Note: • The CN numbers in the following table are the connector numbers on the IOB.

No.	Sensor Name/ Sensor Board Name	Active	CN	Condition	Symptom
				Open	"Open Cover" is displayed.
SW1	Right Door Open Switch	L	CN204/1	Shorted	"Open cover" cannot be detected.
				Open	"Open Cover" is displayed.
S9	Duplex Door	L	CN232/B9	Shorted	"Open cover" cannot be detected.
	ID Sensor: M	A	CN211/ 7, 11	Open/ Shorted
	ID Sensor: C	A	CN211/ 8, 12	Open/ Shorted	SC400
S1	ID Sensor: Y	A	CN211/ 9, 13	Open/ Shorted
	ID Sensor: Front	A	CN211/1	Open/ Shorted	SC258
	ID Sensor: Center and K	A	CN211/2	Open/ Shorted	SC400 / SC258
	ID Sensor: Rear	A	CN211/3	Open/ Shorted	SC258
S12	Registration Sensor	L	CN224/A2	Open	Jam A (Jam8, 17)
				Shorted	Jam A, B (Jam1)
S28	Drum Gear Position Sensor-K	H	CN222/A2	Open/ Shorted	SC380/SC396
S29	Drum Gear Position Sensor-M	H	CN222/ A5	Open/ Shorted	SC381/SC397
S30	Drum Gear Position Sensor-C	H	CN222/ A8	Open/ Shorted	SC382/SC398
S31	Drum Gear Position Sensor-Y	H	CN222/ A11	Open/ Shorted	SC383/SC399
S24 S25 S26 S27	Toner End Sensor - K Toner End Sensor - Y Toner End Sensor - C Toner End Sensor - M	L	CN207/A1 CN207/B9 CN207/ B12 CN207/ B15	Open	Toner end cannot be detected.
				Shorted	Toner end is detected when there is enough toner.
S32	Image Transfer Belt Rotation Sensor	H/L	CN208/11	Open/ Shorted	SC443
S18	Vertical Transport Sensor 1	L	CN230/A7	Open	Jam A (Jam3, 11)
				Shorted	Jam A, B (Jam1)
S21 S24	Paper End Sensor 1, 2	L	CN230/ A10, B10	Open	Paper end is not detected when there is no paper in the paper tray.
				Shorted	Paper end is detected when there is paper in the paper tray.
S20 S23	Paper Lift Sensor 1,2	H	CN230/ A13, B13	Open/ Shorted	SC501, SC502
S21	Vertical Transport Sensor 2	L	CN230/B7	Open	Jam A (Jam4, 12)
				Shorted	Jam A, B (Jam1)