Ricoh MPC3500
Troubleshooting. Electrical Component Defects 1
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 |
|---|---|---|---|---|---|
| S13 | Duplex Door | L | CN215/B9 | Open | "Open Cover" is displayed |
| Shorted | "Open cover" cannot be detected. | ||||
| S44 | ID Sensor (K, M, C, Y) | A | CN239 | Open/ Shrted |
SC285 |
| ID Sensor (Front, Center, Rear) | A | CN107 on BCU |
Open/ Shorted |
SC400 | |
| S17 | Registration Sensor | L | CN209/A2 | Open | Jam A (Jam8, 17) |
| Shorted | Jam A, B (Jam1) | ||||
| S35 | Drum Gear Position Sen- sor-K |
H | CN244/10 | Open/ Shorted |
SC380/SC396 |
| S36 | Drum Gear Position Sen- sor-M |
H | CN244/13 | Open/ Shorted |
SC380/SC397 |
| S37 | Drum Gear Position Sen- sor-C |
H | CN244/16 | Open/ Shorted |
SC380/SC398 |
| S38 | Drum Gear Position Sen- sor-Y |
H | CN244/19 | Open/ Shorted |
SC380/SC399 |
| S1 | Shutter Positioning Sensor - Open | H | CN266/4 | Open | SC294/295 |
| Shorted | SC293 | ||||
| S2 | Shutter Positioning Sensor - Close | H | CN266/7 | Open | SC291/292 |
| Shorted | SC290 | ||||
| S31 S32 S33 S34 |
Toner End Sensor - Y Toner End Sensor - C Toner End Sensor - M Toner End Sensor - K |
L | CN236/B3 CN236/B6 CN236/B9 CN236/ B12 |
Open | Toner end cannot be detected. |
| Shorted | Toner end is detected when there is enough toner. | ||||
| S52 | Image Transfer Belt Rotation Sensor | H/L | CN223/1 | Open/ Shorted |
SC443 |
| S24 | Vertical Transport Sensor 1 |
L | CN212/A7 | Open | Jam A (Jam3, 11) |
| Shorted | Jam A, B (Jam1) | ||||
| S25 S29 |
Paper End Sensor 1, 2 |
L | CN212/ 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. | ||||
| S26 S30 |
Paper Lift Sensor 1,2 | H | CN212/ A13, B13 |
Open/ Shorted |
SC501, SC502 |
| S28 | Vertical Transport Sensor 2 |
L | CN212/B7 | Open | Jam A (Jam4, 12) |
| Shorted | Jam A, B (Jam1) | ||||
| 519 520 |
Tray 1 Paper Height Sensor 1,2 | L | CN209/ B2, B5 |
Open/ Shorted |
Remaining paper volume on the LCD is wrong. |
| 521 522 |
Tray 2 Paper Height Sensor 1,2 | L | CN209/ B10, B13 |
Open/ Shorted |
Remaining paper volume on the LCD is wrong. |
| S23 | Tray 1 Paper Feed Sensor | L | CN212/A4 | Open/ Shorted |
Jam A, B (Jam1) |
| S27 | Tray 2 Paper Feed Sensor | L | CN212/A4 | Open/ Shorted |
Jam A, B (Jam1) |