Ricoh M257 SPC440DN Z-P2
Troubleshooting. Electrical Component Defects 1
Sensors
| No. | Sensor Name/ Sensor Board Name | Active | CN No./ Pin No. | Condition | Symptom |
|---|---|---|---|---|---|
| 1 | Drum Phase Sensor | H | CN108/2 | Open | SC381 |
| (CMY) | Shorted | ||||
| 2 | Drum Phase Sensor | H | CN107/2 | Open | SC380 |
| (K) | Shorted | ||||
| 3 | Toner End Sensor(K) | L | CN115/18 | Open | Toner end cannot be detected. |
| Toner End Sensor (M) | CN115/21 | ||||
| Toner End Sensor (C) Toner End Sensor (Y) |
CN115/24 CN115/27 |
Shorted | Toner end is detected. | ||
| 4 | Transfer Belt Contact Sensor | L | CN128/21 | Open | SC442 |
| Shorted | |||||
| 5 | Paper Transfer Roller Contact Sensor | L | CN128/8 | Open | SC452 |
| Shorted | |||||
| 6 | TD Sensor (K) | A | CN108/19 | Open | SC372 (K) |
| TD Sensor (M) | CN109/17 | Shorted | SC373 (M) | ||
| TD Sensor (C) | CN108/8 | SC374(C) | |||
| TD Sensor (Y) | CN109/25 | SC375 (Y) | |||
| 7 | ITB Rotation Sensor | A | CN128/18 | Open | • Automatic line position adjustment error: Transfer belt unit speed cannot be detected, causing image skew. |
| Shorted | |||||
| • SC285 | |||||
| 8 | Front Door Sensor | L | CN104/1 | Open | "Cover Open" is displayed. |
| Shorted | Front cover open cannot be detected. | ||||
| 9 | Waste Toner Bottle Full Sensor |
H | CN118/19 | Open | Waste Toner near full is indicated. |
| Shorted | Waste toner full cannot be detected. | ||||
| 10 | Waste Toner Bottle Set Sensor |
L | CN118/16 | Open | "Check the Left Cover is closed and the Waste Toner Bottle is set correctly" is displayed. |
| Shorted |
|
||||
| 11 | Temperature/ Humidity Sensor |
A | CN127/1, 3 | Open |
|
| Shorted | |||||
| 12 | Paper Size Sensor | A | CN116/ A11, A12, A13 |
Open | Paper size error |
| Shorted | |||||
| 13 | Tray1 Set Sensor | L | CN116/A15 | Open | Tray 1 is not detected. |
| Shorted | Tray 1 is detected. |