Ricoh D089 MPC5501A AP-C2.5

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
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/ A15	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/ B12	Open	Paper size error
				Shorted
S8	Fusing Entrance Sensor	L	CN232/B6	Open	Jam C (Jam 18)
				Shorted	Jam C (Jam 1)
S6	Duplex Entrance Sensor	L	CN232/A8	Open	Jam Z (Jam 26/27)
				Shorted	Jam Z (Jam 1)
S7	Duplex Exit Sensor	L	CN232/ A11	Open	Jam Z (Jam 25)
				Shorted	Jam Z (Jam 1)
S39	TD Sensor - K	A	CN227/A7	Open/ Shorted	SC372
S40	TD Sensor - M	A	CN227/ A15	Open/ Shorted	SC373
S41	TD Sensor - C	A	CN227/B7	Open/ Shorted	SC374
S42	TD Sensor - Y	A	CN227/ B15	Open/ Shorted	SC375
S4	Fusing Exit Sensor	L	CN204/12	Open	Jam C (Jam 19)
				Shorted	Jam C (Jam 1)
S13	Waste Toner Sensor	H	CN224/A5	Open	Waste toner near full indicated when it is not near full.
				Shorted	Waste toner near full cannot be detected when the waste toner bottle is nearly full.
SW3	Waste Toner Bottle Set Switch	L	CN224/A7	Open	Waste toner bottle is not detected when the waste toner bottle is set.
				Shorted	Waste toner bottle is detected when the waste toner bottle is not set.
SW5	Tray 2 Paper Size Switch	L	CN224/ A11, A12, A13, A15	Open/ Shorted	Paper size error
S47	Original Length Sensor 3	A	CN313/2 SIO	Open/ Shorted	Original paper size cannot be detected.
S43	Scanner HP Sensor	H	CN318/2	Open	SC120
			SIO	Shorted	SC121
S44	Platen Cover Sensor	L	CN318/5 SIO	Open/ Shorted	Platen cover open cannot be detected.
S37	Heating Roller Rotation Sensor	H/L	CN210/2	Open/ Shorted	SC584
S38	Pressure Roller HP Sensor	L	CN210/5	Open/ Shorted	SC569
S2	Junction Paper Jam Sensor	L	CN204/6	Open/ Shorted	Jam C (Jam 24/64)