Ricoh G133 Service Manual page 314

Electrical Component Defects
Sensor Name/
No.
Sensor Board Name
Shutter Positioning
S2
Sensor - Close
Toner End Sensor - Y
S31
Toner End Sensor - C
S32
Toner End Sensor -
S33
M
S34
Toner End Sensor - K
Image Transfer Belt
S52
Rotation Sensor
Vertical Transport
S24
Sensor 1
S25 Paper End
S29 Sensor 1, 2
S26
Paper Lift Sensor 1, 2
S30
Vertical Transport
S28
Sensor 2
S19 Tray 1 Paper Height
S20 Sensor 1, 2
S21 Tray 2 Paper Height
G133
Active CN
H CN266/7
CN236/B3
CN236/B6
L CN236/B9
CN236/
B12
H/L CN223/1
L CN212/A7
CN212/
L
A10, B10
CN212/
H
A13, B13
L CN212/B7
CN209/
L
B2, B5
L CN209/
4-98
Condition Symptom
Open SC291/292
Shorted SC290
Toner end cannot be
Open
detected.
Toner end is detected
Shorted when there is enough
toner.
Open/
SC443
Shorted
Open Jam A (Jam3, 11)
Shorted Jam A, B (Jam1)
Paper end is not
detected when there is
Open
no paper in the paper
tray.
Paper end is detected
Shorted when there is paper in
the paper tray.
Open/
SC501, SC502
Shorted
Open Jam A (Jam4, 12)
Shorted Jam A, B (Jam1)
Remaining paper
Open/
volume on the LCD is
Shorted
wrong.
Open/ Remaining paper
SM