Ricoh MPC1800
Troubleshooting. Electrical Component Defects 2
Switches
| Component | CN | Condition | Symptom |
|---|---|---|---|
| Paper End | 113-2 (BICU) |
Open | The CPU cannot detect the paper end, and a paper jam may occur when a copy is made from the standard paper tray. |
| Shorted | |||
| Paper Size | 113 3,4,6 (BICU) |
Open | The CPU cannot detect the proper paper size, and misfeeds may occur when a copy is made from the 1st paper tray. |
| Shorted | |||
| Vertical Transport Door | 110-5 (BICU) |
Open | The Cover Open indicator is lit even if the vertical transport door is closed. |
| Shorted | The Cover Open indicator is not lit even if the vertical transport door is opened. | ||
| By-pass Paper Size | 127 1,2,4,5 (BICU) |
Open | The CPU misdetects or is not able to detect the size of the paper set in the bypass tray, causing possible misfeeds when feeding from this tray. |
| Shorted | |||
| One-sheet By-pass Tray | 127-9 (BICU) |
Open | The machine detects that the one-sheet by-pass tray is open even it is closed. |
| Shorted | The machine does not detect that the one-sheet bypass tray is open even it is actually opened. | ||
| One-sheet By-pass Paper Set | 113-8 (BICU) |
Open | The machine does not open the one-sheet by-pass shutter even a sheet of paper is set to the one-sheet by-pass tray. |
| Shorted | The machine open the one-sheet by-pass shutter even a sheet of paper is not set to the one-sheet bypass tray. | ||
| One-sheet By-pass Exit Door | 114-A2 (BICU) |
Open | The Cover Open indicator is lit even if doors are closed. |
| Shorted | The Cover Open indicator is not lit even if doors are open. | ||
| Right Door | 115-2 (BICU) |
Open | The Cover Open indicator is lit even if the right door is closed. |
| Shorted | The Cover Open indicator is not lit even if the right door is open. | ||
| Front Door | 111-4 (BICU) |
Open | The Cover Open indicator is lit even if doors are closed. |
| Shorted | The Cover Open indicator is not lit even if doors are open. | ||
| Left Door | 114-A7 (BICU) |
Open | The Cover Open indicator is lit even if doors are closed. |
| Shorted | The Cover Open indicator is not lit even if doors are open. | ||
| Left Junction Cover | 126-4 (BICU) |
Open | The Cover Open indicator is lit even if doors are closed. |
| Shorted | The Cover Open indicator is not lit even if doors are open. | ||
| Carriage Postion | 161-5 | Open | SC200 is displayed. |
| (BICU) | Shorted | ||
| Main | Open | The machine does not turn on. | |
| Shorted | The machine does not turn off. |