Defective Sensor Table - Ricoh FT4430 Service Manual

DEFECTIVE SENSOR TABLE

No 8 Name
S1 Lens Home Position
S2 Pulse Generator
S3 Toner End
S4
Manual Feed
S5 Color Toner
S6 First Paper End
S7
Second Paper End
S8 First Paper Size
S9 Second Paper Size
Condition
Lights SC NO. 29 when the main
Open
switch is turned on.
Short Lights SC No.
switch is turned on.
Lights SC No. 61 during the copy
Open
cycle.
Short
Same as "Open" condition.
The CPU never detects toner end
Open
condition.
Lights "Add Toner" indicator even
Short
when enough toner is present.
Lights "Manual Feed" indicator even
Open
when the manual feed table is closed.
Never lights "Manual Feed" indicator
Short
and the manual feed mode does not
work.
"color Toner" does not turn on when
Open
there is a color development unit in
the machine.
Lights "Color Toner" indicator when
Short
the main switch is turned on.
Open Lights "Load Paper" indicator even
when paper is present.
Never lights "Load Paper" indicator
Short
even when paper is present.
Open Same as S6.
Short
Same as S6.
Open Displays incorrect paper size.
Short No cassette in place condition is
detected if all sensors are shorted.
Open Same as S8.
Short Same as S8.
11-29
.
Problem
28
when the main
16 April '88