Ricoh B224 MPC4500 AP-C1
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 |
|---|---|---|---|---|---|
| S6 | Paper Overflow Sensor | L | CN232/16 | 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. |
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| S41 | Original Width Sensor 1 | A | CN313/4 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
| Original Width Sensor 2 | A | CN313/3 SIO |
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| S42 | Original Length Sensor 1 | A | CN313/8 SIO |
Open/ Shorted |
Original paper size cannot be detected. |
| Original Length Sensor 2 | A | CN313/9 SIO |
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| S43 | Original Length Sensor 3 | A | CN313/13 SIO |
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| 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. |
| S45 | Paper Transfer Contact Sensor | L | CN225/11 | Open/ Shorted |
SC452 |
| S46 | Image Transfer Belt Contact Sensor | L | CN225/17 | Open/ Shorted |
SC442 |
| S8 | Ferrite Roller HP Sensor | L | CN224/7 | Open/ Shorted |
SC549 |
| S7 | Fusing Belt Sensor | H/L | CN225/2 | Open/ Shorted | SC584 |
| S14 | Junction Gate 1 HP Sensor | L | C215/B12 | Open/ Shorted | SC529 |
| S3 | Junction Paper Jam | L | C232/7 | Open/ Shorted | Jam C (Jam 24/64) |