Sensors
The CN numbers in the following table are the connector numbers on the IOB.
No. |
Sensor Name/ Sensor Board Name |
Active |
CN |
Condition |
Symptom |
|---|---|---|---|---|---|
SW1 |
Right Door Open Switch |
L |
CN204/1 |
Open |
"Open Cover" is displayed. |
Shorted |
"Open cover" cannot be detected. |
||||
S9 |
Duplex Door |
L |
CN232/B9 |
Open |
"Open Cover" is displayed. |
Shorted |
"Open cover" cannot be detected. |
||||
S1 |
ID Sensor: M |
A |
CN211/ 7, 11 |
Open/ Shorted |
SC400 |
ID Sensor: C |
A |
CN211/ 8, 12 |
Open/ Shorted |
||
ID Sensor: Y |
A |
CN211/ 9, 13 |
Open/ Shorted |
||
ID Sensor: Front |
A |
CN211/1 |
Open/ Shorted |
SC258 |
|
ID Sensor: Center and K |
A |
CN211/2 |
Open/ Shorted |
SC400 / SC258 |
|
ID Sensor: Rear |
A |
CN211/3 |
Open/ Shorted |
SC258 |
|
S12 |
Registration Sensor |
L |
CN224/A2 |
Open |
Jam A (Jam8, 17) |
Shorted |
Jam A, B (Jam1) |
||||
S28 |
Drum Gear Position Sensor-K |
H |
CN222/A2 |
Open/ Shorted |
SC380/SC396 |
S29 |
Drum Gear Position Sensor-M |
H |
CN222/ A5 |
Open/ Shorted |
SC381/SC397 |
S30 |
Drum Gear Position Sensor-C |
H |
CN222/ A8 |
Open/ Shorted |
SC382/SC398 |
S31 |
Drum Gear Position Sensor-Y |
H |
CN222/ A11 |
Open/ Shorted |
SC383/SC399 |
S24 S25 S26 S27 |
Toner End Sensor - K Toner End Sensor - Y Toner End Sensor - C Toner End Sensor - M |
L |
CN207/A1 CN207/B9 CN207/ B12 CN207/ B15 |
Open |
Toner end cannot be detected. |
Shorted |
Toner end is detected when there is enough toner. |
||||
S32 |
Image Transfer Belt Rotation Sensor |
H/L |
CN208/11 |
Open/ Shorted |
SC443 |
S18 |
Vertical Transport Sensor 1 |
L |
CN230/A7 |
Open |
Jam A (Jam3, 11) |
Shorted |
Jam A, B (Jam1) |
||||
S21 S24 |
Paper End Sensor 1, 2 |
L |
CN230/ A10, B10 |
Open |
Paper end is not detected when there is no paper in the paper tray. |
Shorted |
Paper end is detected when there is paper in the paper tray. |
||||
S20 S23 |
Paper Lift Sensor 1, 2 |
H |
CN230/ A13, B13 |
Open/ Shorted |
SC501, SC502 |
S21 |
Vertical Transport Sensor 2 |
L |
CN230/B7 |
Open |
Jam A (Jam4, 12) |
Shorted |
Jam A, B (Jam1) |
||||
S14 S15 |
Tray 1 Paper Height Sensor 1, 2 |
L |
CN224/ B2, B5 |
Open/ Shorted |
Remaining paper volume on the LCD is wrong. |
S16 S17 |
Tray 2 Paper Height Sensor 1, 2 |
L |
CN224/ B10, B13 |
Open/ Shorted |
Remaining paper volume on the LCD is wrong. |
SW4 |
Tray 1 Set Switch |
L |
CN224/A9 |
Open |
Tray 1 is not detected when tray 1 is set. |
Shorted |
Tray 1 is detected when tray 1 is not set. |
||||
S11 |
By-pass Paper Size Sensor |
L |
CN232/ B16, B17, B19, B20 |
Open/ Shorted |
Paper size error |
SW2 |
By-pass Paper Detection Sensor |
L |
CN232/ A15 |
Open |
Paper on the by-pass tray is not detected when paper is set. |
Shorted |
Paper on the by-pass tray is detected when paper is not set. |
||||
S10 |
By-pass Paper Length Sensor |
L |
CN232/ B12 |
Open |
Paper size error |
Shorted |
|||||
S8 |
Fusing Entrance Sensor |
L |
CN232/B6 |
Open |
Jam C (Jam 18) |
Shorted |
Jam C (Jam 1) |
||||
S6 |
Duplex Entrance Sensor |
L |
CN232/A8 |
Open |
Jam Z (Jam 26/27) |
Shorted |
Jam Z (Jam 1) |
||||
S7 |
Duplex Exit Sensor |
L |
CN232/ A11 |
Open |
Jam Z (Jam 25) |
Shorted |
Jam Z (Jam 1) |
||||
S35 |
TD Sensor - K |
A |
CN227/A7 |
Open/ Shorted |
SC372 |
S36 |
TD Sensor - M |
A |
CN227/ A15 |
Open/ Shorted |
SC373 |
S37 |
TD Sensor - C |
A |
CN227/B7 |
Open/ Shorted |
SC374 |
S38 |
TD Sensor - Y |
A |
CN227/ B15 |
Open/ Shorted |
SC375 |
S4 |
Fusing Exit Sensor |
L |
CN204/12 |
Open |
Jam C (Jam 19) |
Shorted |
Jam C (Jam 1) |
||||
S13 |
Waste Toner Sensor |
H |
CN224/A5 |
Open |
Waste toner near full indicated when it is not near full. |
Shorted |
Waste toner near full cannot be detected when the waste toner bottle is nearly full. |
||||
SW4 |
Waste Toner Bottle Set Switch |
L |
CN224/A7 |
Open |
Waste toner bottle is not detected when the waste toner bottle is set. |
Shorted |
Waste toner bottle is detected when the waste toner bottle is not set. |
||||
SW6 |
Tray 2 Paper Size Switch |
L |
CN224/ A11, A12, A13, A15 |
Open/ Shorted |
Paper size error |
S33 |
Temperature/ Humidity Sensor |
A |
CN231/ 25, 27 |
Open/ Shorted |
SC498 Printed image has some problems such as rough image, dirty background, weak image or poor fusing. |
S34 |
Thermopile |
A |
CN209/16 |
Open/ Shorted |
SC541 |
TH2 |
Thermistor - Heating Roller |
A |
CN212/22 |
Open/ Shorted |
SC551 |
TH1 |
Thermistor - Pressure Roller |
A |
CN212/18 |
Open/ Shorted |
SC561 |
S3 |
Paper Exit Sensor |
L |
CN204/9 |
Open |
Jam C (Jam 20) |
Shorted |
Jam C (Jam 1) |
||||
S5 |
Paper Overflow Sensor |
L |
CN204/15 |
Open |
Paper overflow message is not displayed when the paper overflow condition still remains. |
Shorted |
Paper overflow message is displayed when the paper overflow condition does not remain. |
||||
S41 |
Original Width Sensor 1 |
A |
CN313/14 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
Original Width Sensor 2 |
A |
CN313/11 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
|
S42 |
Original Length Sensor 1 |
A |
CN313/8 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
Original Length Sensor 2 |
A |
CN313/5 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
|
S43 |
Original Length Sensor 3 |
A |
CN313/2 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
S39 |
Scanner HP Sensor |
H |
CN318/2 SIO |
Open |
SC120 |
Shorted |
SC121 |
||||
S40 |
Platen Cover Sensor |
L |
CN318/5 SIO |
Open/ Shorted |
Platen cover open cannot be detected. |
S2 |
Junction Paper Jam Sensor |
L |
CN204/6 |
Open/ Shorted |
Jam C (Jam 24/64) |
