Ricoh Aficio MP 3350B

Electrical Component Defects
D017/D018/D019/D020 4-58 SM
4.6.2 SWITCHES
Component CN PCB State Symptom
Open
The TD sensor initial setting
procedure is not performed when a
new PCU is installed.
Correct PCU
Detect Switch
327-8 BCU
Shorted
The TD sensor initial setting
procedure is performed whenever
the front cover is closed.
Open
The Cover Open indicator is not lit
even if the front cover is opened.
Front Door
Safety Switch
321-3 BCU
Shorted
The Cover Open indicator is lit even
if the front cover is closed.
Open
The Cover Open indicator is not lit
even if the right upper cover is
opened.
Right Upper
Cover Switch
321-8 BCU
Shorted
The Cover Open indicator is lit even
if the right upper cover is closed.
Open
The Cover Open indicator is not lit
even if the right lower cover is
opened.
Right Lower
Cover Switch
321-1 BCU
Shorted
The Cover Open indicator is lit even
if the right lower cover is closed.
.