Ricoh MPC3001
Troubleshooting. Electrical Component Defects 2
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 |
|---|---|---|---|---|---|
| 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. |