Ricoh FT5535 Service Manual page 231

Rev. 7/95
5. ELECTRICAL COMPONENT DEFECTS
5.1 SENSORS
Component CN
(Symbol)
By-pass Feed 126-9~12
Paper Width (S1)
By-pass Feed
Paper End (S2)
Upper Tray Paper
End [Non-duplex
machines only] (S3)
Upper Relay (S4)
*Misfeed detect
Upper Tray Upper
Limit
[A153/A155
machines only] (S5)
Lower Tray Paper
End (S6)
Lower Relay (S7)
*Misfeed detect
Lower Tray Upper
Limit
[A153/A155/
A156 mchines
only] (S8)
LCT Lower Limit 132-10
[LCT machines
only] (S9)
LCT Paper End
[LCT machines
only] (S10)
FT5535/4527/4522
Condition Symptom
(When the main switch is turned on.)
Open The copier does not turn on the bypass
indicator.
Shorted The CPU cannot detect the proper paper
size.
126-7 Open The Paper End indicator lights even if
paper is placed on the by-pass feed table.
Shorted The Paper End indicator does not light
even if there is no paper on the by-pass
feed table.
131-2 Open
The Paper End indicator lights even if
paper is placed on the by-pass feed table.
Shorted The Paper End indicator does not light
even if there is no paper on the by-pass
feed table.
128-4 Open Paper jam type A occurs whenever a copy
is made.
Shorted The Paper Jam A indicator lights even if
there is no paper.
131-8 Open
The Paper End indicator lights even if
there is paper on the tray.
Shorted The tray bottom plate locks at the upper
position.
134-2 Open The Paper End indicator lights even if
paper is present.
Shorted The Paper End indicator does not light
even if there is no paper.
128-1 Open
A paper jam type A occurs whenever a
copy is made.
Shorted The Paper Jam A indicator lights even if
there is no paper.
134-8 Open The Paper End indicator lights even if
there is paper on the tray.
Shorted The tray bottom plate locks at the upper
position.
Open The LCT bottom plate does not lower.
Shorted
When the bottom plate is lowered, it locks
at the lowest position.
129-7 Open The Paper End indicator lights even if
there is paper in the LCT.
Shorted
The Paper End indicator does not light
even if there is no paper.
6-44 FSM