| Component |
CN |
PCB |
State |
|
| Small Paper Size Sensor (S1) |
307-A2 |
BCU |
Open |
The CPU cannot detect the paper size properly. |
| Shorted |
| 1st Tray Paper Size Sensor (S2) |
307-A5, A6, A8 |
BCU |
Open |
The CPU cannot detect the paper size properly. |
| Shorted |
| 2nd Tray Paper Size Sensor (S3) |
307-A13, A14, A16 |
BCU |
Open |
The CPU cannot detect the paper size properly. |
| Shorted |
| 1st Paper Height Sensor 1 (S4) |
307-B2 |
BCU |
Open |
Remaining paper volume in Tray 1 or 2 on the LCD is wrong. |
| Shorted |
| 1st Paper Height Sensor 2 (S5) |
307-B5 |
BCU |
Open |
Remaining paper volume in Tray 1 or 2 on the LCD is wrong. |
| Shorted |
| 2nd Paper Height Sensor 1 (S6) |
307-B10 |
BCU |
Open |
Remaining paper volume in Tray 1 or 2 on the LCD is wrong |
| Shorted |
| 2nd Paper Height Sensor 2 (S7) |
307-B11 |
BCU |
Open |
Remaining paper volume in Tray 1 or 2 on the LCD is wrong. |
| Shorted |
| 2nd Paper Overflow Sensor (S8) |
308-B13 |
BCU |
Open |
Paper overflow sensor detects the top of the paper loaded in the 2nd paper tray, even if no paper is placed in the 2nd paper tray |
| Shorted |
Paper overflow sensor does not detect the top of the paper loaded in the 2nd paper tray, even if paper is placed in the 2nd paper tray |
| 2nd Paper End Sensor (S9) |
308-B10 |
BCU |
Open |
The Paper End indicator does not light even if there is no paper in the 2nd paper tray. |
| Shorted |
The Paper End indicator lights even if paper is placed in the 2nd paper tray. |
| 2nd Vertical Transport Sensor (S10) |
308-B13 |
BCU |
Open |
Jam A (Jam 12) |
| Shorted |
Jam A (Jam 1) |
| 2nd Paper Feed Sensor (S11) |
308-B17 |
BCU |
Open |
Jam A (Jam 4) |
| Shorted |
| 1st Paper Overflow Sensor (S12 |
308-A13 |
BCU |
Open |
Paper overflow sensor detects the top of the paper loaded in the 1st paper tray, even if no paper is placed in the 1st paper tray |
| Shorted |
Paper overflow sensor does not detect the top of the paper loaded in the 1st paper tray, even if paper is placed in the 1st paper tray |