Ricoh MPC5502A

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
SW1	Right Door Open Switch	L	CN204/1	Open	"Open Cover" is displayed.
				Shorted	"Open cover" cannot be detected.
S9	Duplex Door	L	CN232/B11	Open	"Open Cover" is displayed.
				Shorted	"Open cover" cannot be detected.
	ID Sensor: Front	A	CN219/1	Open/ Shorted	SC370
S1	ID Sensor: Center and K	A	CN219/2	Open/ Shorted	SC370
	ID Sensor: Rear	A	CN219/3	Open/ Shorted	SC370
S12	Registration Sensor	L	CN224/A2	Open	Jam A (Jam8, 17)
				Shorted	Jam A, B (Jam1)
S30	Drum Gear Position Sensor-K	H	CN222/A2	Open/ Shorted	SC390-01/SC396-01
S31	Drum Gear Position Sensor-C	H	CN222/ A5	Open/ Shorted	SC390-02/SC396-02
S32	Drum Gear Position Sensor-M	H	CN222/ A8	Open/ Shorted	SC390-03/SC396-03
S33	Drum Gear Position Sensor-Y	H	CN222/ A11	Open/ Shorted	SC390-04/SC396-04
S26 S27 S28 S29	Toner End Sensor - K Toner End Sensor - Y Toner End Sensor - C Toner End Sensor - M	L	CN207/B14 CN207/B3 CN207/ B9 CN207/ B6	Open	Toner end cannot be detected.
				Shorted	Toner end is detected when there is enough toner.
S34	Image Transfer Belt Rotation Sensor	H/L	CN206/3	Open/ Shorted	SC443
S19	Vertical Transport Sensor 1	L	CN230/A7	Open	Jam A (Jam3, 11)
				Shorted	Jam A, B (Jam1)
S20 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.
S21 S25	Paper Lift Sensor 1,2	H	CN230/ A13, B13	Open/ Shorted	SC501, SC502
S23	Vertical Transport Sensor 2	L	CN230/B7	Open	Jam A (Jam4, 12)
				Shorted	Jam A, B (Jam1)
S14 S15	Tray 1 Paper Height Sensor 1, 2	L	CN224/ B2, B5	Open/ Shorted	Remaining paper volume on the LCD is wrong.
S16 S17	Tray 2 Paper Height Sensor 1, 2	L	CN224/ B10, B13	Open/ Shorted	Remaining paper volume on the LCD is wrong.
S18	Tray 1 Paper Feed Sensor	L	CN230/A4	Open/ Shorted	Jam A, B
S22	Tray 2 Paper Feed Sensor	L	CN230/B4	Open/ Shorted	Jam A, B
SW4	Tray 1 Set Switch	L	CN224/A9	Open	Tray 1 is not detected when tray 1 is set.
				Shorted	Tray 1 is detected when tray 1 is not set.
S11	By-pass Paper Size Sensor	L	CN232/ B16, B17, B19, B20	Open/ Shorted	Paper size error
SW2	By-pass Paper Detection	L	CN232/ A10	Open	Paper on the by-pass tray is not detected when paper is set.
				Shorted	Paper on the by-pass tray is detected when paper is not set.
S10	By-pass Paper Length Sensor	L	CN232/ B14	Open	Paper size error
				Shorted
S8	Fusing Entrance Sensor	L	CN232/B2	Open	Jam C (Jam 18)
				Shorted	Jam C (Jam 1)
S6	Duplex Entrance Sensor	L	CN232/A2	Open	Jam Z (Jam 26/27)
				Shorted	Jam Z (Jam 1)
S7	Duplex Exit Sensor	L	CN232/ B8	Open	Jam Z (Jam 25)
				Shorted	Jam Z (Jam 1)
S39	TD Sensor - K	A	CN227/A7	Open/ Shorted	SC360-01
S40	TD Sensor - C	A	CN227/ A15	Open/ Shorted	SC360-02