Ricoh IM C300

Electrical Component Defects
D0CA/D0C9/D0C8/D0CB 6-164 SM
No. Sensor Name/
Sensor Board
Name
Activ
e
CN No./
Pin No.
Conditi
on
Symptom
S36 Waste toner full
sensor (S36)
H CN571/14 Open Waste toner
full is
detected
when it is not
near full.
Shorted Waste toner
full cannot
be detected
when the
waste toner
bottle is
nearly full.
TH
1
Fusing thermopile
(TH1)
A CN525/6 Open SC541
Shorted
TH
2
Pressure roller
thermistor (edge:
front) (TH2)
A CN525/25 Open SC591
Shorted
TH
3
Pressure roller
thermistor (edge:
rear) (TH3)
A CN525/23 Open SC571
Shorted
TH
4
Pressure roller
thermistor (edge:
center) (TH4)
A CN525/21 Open SC561
Shorted
TH
5
Imaging
temperature
sensor (TH5)
A CN526/4 Open SC497
Shorted
SW
2
Right cover
sensor (SW2)
L CN559/14 Open “Cover
closed”
cannot be
detected.
Shorted “Open
Cover”
cannot be
detected.