Ricoh MPC 2800 AT-C2 Field Service Manual page 494

7. Appendix: Electrical Component Defects
Sensor Name/
No.
Sensor Board Name
S13 Registration Sensor
Drum Gear Position
S29
Sensor-K
Drum Gear Position
S30
Sensor-M
Drum Gear Position
S31
Sensor-C
Drum Gear Position
S32
Sensor-Y
S25 Toner End Sensor - K
7
S26 Toner End Sensor - Y
S27 Toner End Sensor - C
S28 Toner End Sensor - M
Image Transfer Belt
-
Rotation Sensor
Vertical Transport Sensor
S20
1
S21 Paper End
S24 Sensor 1, 2
S22
Paper Lift Sensor 1, 2
S25
138
Activ
CN Condition
e
Open
L CN224/A2
Shorted
Open/
H CN222/A2
Shorted
Open/
H CN222/ A5
Shorted
Open/
H CN222/ A8
Shorted
Open/
H CN222/ A11
Shorted
CN207/A1
Open
CN207/B9
CN207/
L
B12
Shorted
CN207/
B15
Open/
H/L CN208/11
Shorted
Open
L CN230/A7
Shorted
Open
CN230/
L
A10, B10
Shorted
CN230/ Open/
H
A13, B13 Shorted
Symptom
Jam A (Jam8, 17)
Jam A, B (Jam1)
SC380/SC396
SC380/SC397
SC380/SC398
SC380/SC399
Toner end cannot be
detected.
Toner end is detected when
there is enough toner.
SC443
Jam A (Jam3, 11)
Jam A, B (Jam1)
Paper end is not detected
when there is no paper in
the paper tray.
Paper end is detected when
there is paper in the paper
tray.
SC501, SC502