Ricoh D038 MPC2050 DI-C1

• The CN numbers in the following table are the connector numbers on the BCU.

Sensors

No.	Sensor Name/ Sensor Board Name	Active	CN	Condition	Symptom
				Open	"Open Cover" is displayed.
SW4	Duplex Unit Open Switch	L	CN232/2	Shorted	"Open cover" cannot be detected.
	ID Sensor: Front	A	CN214/8, 9	Open/ Shorted	SC400
S5	ID Sensor: Center	A	CN214/6, 7	Open/ Shorted	SC400
	ID Sensor: Rear	A	CN214/2, 3	Open/ Shorted	SC400
S19	PTR Contact Sensor	H	CN232/4	Open/ Shorted	SC452
S6	Registration Sensor	L	CN214/11	Open	Jam A2 (Jam17)
				Shorted	Jam B (Jam57)
S35	Drum Phase Sensor: K	H	CN220/2	Open/ Shorted	SC380/SC396
S36	Drum Phase Sensor: CMY	H	CN220/17	Open/ Shorted	SC381/SC397
S21 S22 S23 S24	Toner End Sensor - Y Toner End Sensor - M Toner End Sensor - C Toner End Sensor - K	L	CN234/14, 17, 20, 23	Open	Toner end cannot be detected.
				Shorted	Toner end is detected when there is enough toner.
S12	ITB Rotation Sensor	H/L	CN219/20	Open/ Shorted	SC443
S10	Vertical Transport Sensor 1	L	CN219/10	Open	Jam A1 (Jam11)
				Shorted	Jam A1, A2 (Jam51)
58 59	Paper End Sensor 1, 2	L	CN214/17, 19	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.
S11	Vertical Transport Sensor 2	L	CN219/15	Open	Jam Y (Jam12)
				Shorted	Jam Y (Jam52)
SW6	Tray 1 Paper Size Switch	L	CN211/11, 12, 13, 15	Open/ Shorted	Paper size error
				Shorted	Tray 1 is detected when tray 1 is not set.
S13	By-pass Paper Size Sensor	L	CN221/9, 10, 12, 13	Open/ Shorted	Paper size error
S15	By-pass Paper End Sensor	L	CN221/18	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.