Konica-Minolta bizhub 42
Troubleshooting. JAM. 5. Misfeed at tray 4 paper feed section
Contents
| JAM type | Tray 4 feed section misfeed |
| Detection timing | The leading edge of the paper does not block the tray 4 vertical transport sensor (PS45) even after the set period of time has elapsed after the tray 4 starts to feed paper. |
| For paper fed from the tray 4, image write start signal permit continues to be disabled for a predetermined period of time after the timing of image write start signal output. | |
| The tray 4 vertical transport sensor (PS45) is turned ON when the power switch is turned ON, a door is opened / closed, or jam/trouble reset is done. | |
| In case paper position is detected as locating properly after power switch is turned ON, door is opened / closed or jam/ trouble reset is done, it is regarded as paper jam at tray 4 feed section. | |
| Misfeed processing location | • Tray 4 right door • Tray 4 |
| Relevant parts | • Tray 4 vertical transport sensor (PS45) • Tray 3 vertical transport sensor (PS18) • Registration sensor (PS1) • PC control board (PCCB) • Printer control board (PRCB) • Tray 4 vertical transport motor (M42) • Tray 4 paper feed motor (M41) |
Procedure
| Step | Action | Control signal | Location |
|---|---|---|---|
| 1 | Initial check items | ||
| 2 | PS1 I/O check, sensor check | PRCB CN23-9 (ON) | J-10 |
| 3 | PS45 I/O check, sensor check | PCCB CN6-11 (ON) | PC-211 H-3 |
| 4 | PS18 I/O check, sensor check | PRCB CN23-16 (ON) | J-10 |
| 5 | M41 operation check | PCCB CN5-1 to 4 | PC-211 G-3 |
| 6 | M42 operation check | PCCB CN5-5 to 8 | PC-211 G-3 |
| 7 | PCCB ICP1, ICP3 conduction check | ||
| 8 | Change PCCB | ||
| 9 | Change PRCB |