Ricoh MPC3001
Troubleshooting. Electrical Component Defects 3
Sensors
Note: • The CN numbers in the following table are the connector numbers on the IOB.
| No. | Sensor Name/ Sensor Board Name | Active | CN | Condition | Symptom |
|---|---|---|---|---|---|
| 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 | Open | SC120 |
| SIO | Shorted | SC121 | |||
S40 |
Platen Cover Sensor |
L |
CN318/5 |
Open/ |
Platen cover open cannot be detected. |
S2 |
Junction Paper Jam |
L |
CN204/6 |
Open/ |
Jam C (Jam 24/64) |