Ricoh B089 Service Manual page 431

7.5.2 SWITCHES
Component
(Symbol)
281-1,2
Main
Right Upper
Cover (SBCU)
Right Cover
(SBCU)
Right Lower 307-A8
Cover (SBCU)
Upper Paper 308-1,2,4,5
Size (SBCU)
Lower Paper 308-6,7,9,10
Size (SBCU)
New PCU
Detect (SBCU)
Front Cover 311-2, 4
Safety (SBCU)
Operation
SM
CN Condition
Open
(PSU)
Shorted
Open
324-8
Shorted
Open
308-9
Shorted
Open
Shorted
Open
Shorted
Open
Shorted
Open
327-7
Shorted
Open
Shorted
Open
105-1
(IPU
Shorted
7-23
ELECTRICAL COMPONENT DEFECTS
Symptom
The machine does not turn on.
The machine does not turn off.
The Cover Open indicator is not lit even if
the right upper cover is opened.
The Cover Open indicator is lit even if the
right upper cover is closed.
The Cover Open indicator is not lit even if
the right cover is opened.
The Cover Open indicator is lit even if the
right cover is closed.
The Cover Open indicator is not lit even if
the right lower cover is opened.
The Cover Open indicator is lit even if the
right lower cover is closed.
The CPU cannot detect the proper paper
size, and misfeeds may occur when a copy
is made.
The CPU cannot detect the proper paper
size, and misfeeds may occur when a copy
is made.
The TD sensor initial setting procedure is
not performed when a new PCU is
installed.
The TD sensor initial setting procedure is
performed whenever the front cover is
closed.
The Cover Open indicator is not lit even if
the front cover is opened.
The Cover Open indicator is lit even if the
front cover is closed.
The LCD does not off even if the operation
switch is turned off.
The LCD does not on even if the operation
switch is turned on.
B089/B093