Ricoh R-C4 Service Manual page 186

ELECTRICAL COMPONENT DEFECTS
Component (Symbol)
Lower Relay
Registration
1st Paper Lift
2nd Paper Lift
1st Paper Height – 1
1st Paper Height – 2
2nd Paper Height – 1
2nd Paper Height – 2
NOTE: An SC condition occurs only when a new PCU is being installed in the
machine. During copying, if the ID sensor fails, the image density will be
changed.
CN Condition
Open
307-A5
(SBCU)
Shorted
Open
321-6
(SBCU)
Shorted
Open
305-7
(SBCU)
Shorted
Open
305-10
(SBCU)
Shorted
Open
307-B2
(SBCU)
Shorted
Open
307-B5
(SBCU)
Shorted
Open
307-B9
(SBCU)
Shorted
Open
307-B12
(SBCU)
Shorted
4-32
Symptom
The Paper Jam indicator will light
whenever a copy is made.
The Paper Jam indicator lights even
if there is no paper.
The Paper Jam indicator will light
whenever a copy is made.
The Paper Jam indicator lights even
if there is no paper.
SC501 will be displayed.
Paper jam will occur during copying.
SC502 will be displayed.
Paper jam will occur during copying.
The CPU cannot determine the
paper near-end condition properly.
The CPU cannot determine the
paper near-end condition properly.
The CPU cannot determine the
paper near-end condition properly.
The CPU cannot determine the
paper near-end condition properly.
21 July 2006