Ricoh IM C300

Electrical Component Defects
SM 6-161 D0CA/D0C9/D0C8/D0CB
Troubleshooting
No. Sensor Name/
Sensor Board
Name
Activ
e
CN No./
Pin No.
Conditi
on
Symptom
(S8) 19)
Shorted Jam C
S9 New fusing unit
detection fuse
(S9)
L CN525/34 Open A new fusing
unit is
erroneously
identified as
an old one.
Shorted A shorted
fuse
S10 Fusing thermistor
(non-contact
sensor) (S10)
A CN525/27 Open SC581
Shorted
S11 Toner end sensor
(C) (S11)
A CN539/10 Open SC374
Shorted
S12 Toner end sensor
(M) (S12)
A CN539/9 Open SC373
Shorted
S13 Toner end sensor
(Y) (S13)
A CN539/8 Open SC375
Shorted
S14 TD sensor (K)
(S14)
A CN540/2 Open PCU setting
Error occurs.
Shorted
S15 TD sensor (C)
(S15)
A CN540/8 Open PCU setting
Error occurs.
Shorted
S16 TD sensor (M)
(S16)
A CN540/14 Open PCU setting
Error occurs.
Shorted
S17 TD sensor (Y)
(S17)
A CN540/20 Open PCU setting
Error occurs.
Shorted
S18 Temperature/humi
dity sensor (S18)
A CN526/6,8 Open
• Printed
image is
wrong,
such as
rough
image,
dirty
backgro
und or
weak
Shorted