Ricoh D104 Field Service Manual page 704

6. Troubleshooting
Sensor Name/
No.
Sensor Board Name
ITB Toner Collection
S29
Bottle Full Sensor
SW7 Tray 2 Paper Size Switch
Temperature/
6
S37
Humidity Sensor
S28 Thermopile
TH1 Heating Roller Thermistor
Pressure Roller
TH2
Thermistor 1 (Center)
Pressure Roller
TH3
Thermistor 2 (Ends)
S27 Paper Exit Sensor
S1 Original Length Sensor 1
S2 Original Length Sensor 2
702
Activ
CN Condition
e
Open
H CN211/4
Shorted
Open/
Shorted
CN211/16,
L
17, 18, 20
Shorted
Open/
CN222/15,
A
17
Shorted
Open/
A CN237/14
Shorted
Open/
A CN233/4
Shorted
Open/
A CN233/11
Shorted
Open/
A CN233/9
Shorted
Open
L CN227/21
Shorted
Open/
A CN206/2
Shorted
Open/
A CN206/5
Shorted
Symptom
Used toner near full
indicated when it is not near
full.
Used toner near full cannot
be detected when the waste
toner bottle is nearly full.
Paper size error
Tray 2 is detected when the
tray 2 is not set.
Printed image has some
problems such as rough
image, dirty background,
weak image or poor fusing.
SC541
SC551
SC561
SC571
Jam C (Jam20)
Jam C (Jam60)
Original paper size cannot
be detected.
Original paper size cannot
be detected.