Konica-Minolta bizhub 7718
Troubleshooting. JAM. 2. Misfeed at tray1 paper feed section
Detection timing
| Type | Description |
|---|---|
| Tray1 paper feed section misfeed detection | • If the paper feed from the tray 1 fails, the machine retries twice. However, the leading edge of the paper does not unblock the registration sensor (PS1) even after the lapse of a given period of time after the two retries. |
Relevant electrical components
Registration sensor (PS1)
Tray1 paper feed clutch (CL2)
Main motor (M1)
Printer control board (PRCB)
Action
| Step | Operations | Control signal | Location |
|---|---|---|---|
| 1 | Initial check items | ||
| 2 | Check the connector between M1-PRCB CN6 for proper connection and correct as necessary. | ||
| 3 | Check the M1 connector for proper drive coupling and correct as necessary. | ||
| 4 | Check the connector between PS1-relay CN24-PRCB CN9 for proper connection and correct as necessary. | ||
| 5 | Check the connector between CL2-relay CN8-PRCB CN9 for proper connection and correct as necessary. | PRCB CN9-7 (ON) | C-11 |
| 6 | PS1 sensor check | PRCB CN9-4 (REM) | C-11 |
| 7 | CL2 operation check | ||
| 8 | M1 operation check | ||
| 9 | Replace PRCB. |