Electrical Component Defects - Ricoh B202 Service Manual

ELECTRICAL COMPONENT DEFECTS

4.7 ELECTRICAL COMPONENT DEFECTS
4.7.1 SENSORS
Component
Scanner Home
Position
Platen Cover
Original Width
Original Length-1
Original Length-2
LD H.P. sensor
TD sensor
Transfer belt
sensor
ID sensor
Paper end sensor
Paper lift sensor
Relay sensor
Vertical transport
sensor
B202/B178/B180
CN
648-5
648-2
632-13
632-14
632-8
632-9
632-3
220-B12
K: 210-A3
C: 210-B9
M: 209-A19
Y: 210-A9
210-A12
Rear: 228-3
Center: 228-4, 7
Front: 228-8
Tray1: 205-A5
Tray2: 205-B9
By-pass: 209-A15
Tray1: 205-A2
Tray2: 205-B6
205-A8
208-B11
Condition
Open SC121
Shorted SC120
APS and ARE do not function
Open
correctly.
Shorted No symptom
CPU cannot detect the original size
Open properly. APS and ARE do not
function correctly.
Shorted
CPU cannot detect the original size
Open correctly. APS and ARE do not
function correctly.
Shorted
CPU cannot detect the original size
Open properly. APS and ARE do not
function correctly.
Shorted
Open SC261
Shorted SC260
Open SC370/371/372/373
SC370/371/372/373 or
Shorted
SC374/375/376/377
Open SC471
Shorted
Open SC385
Shorted
The Paper End indicator lights even
Open
if paper is placed in the paper tray.
The Paper End indicator does not
Shorted light even if there is no paper in the
paper tray.
The bottom plate of the paper feed
Open
unit is not lifted up.
Shorted SC501/502
Paper Jam is detected whenever a
Open
print is made.
Paper Jam is detected even if there
Shorted
is no paper.
Paper Jam is detected whenever a
print is made.
Open
Paper Jam is detected even if there
is no paper.
Shorted
4-78
Symptom
SM