Konica-Minolta bizhub 7718
Troubleshooting. JAM. 3. Misfeed at the bypass tray paper feed section
Detection timing
| Type | Description |
|---|---|
| Manual bypass tray paper feed section misfeed detection | • If the paper feed from the bypass tray 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. • The paper fed from the bypass tray does not unblock the registration sensor (PS1) within the given period of time. |
Relevant electrical components
Registration sensor (PS1)
Bypass paper feed clutch (CL3)
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 CL3-relay CN3-relay CN6-PRCB CN8 for proper connection and correct as necessary. | ||
| 6 | PS1 sensor check | PRCB CN9-7 (ON) | C-11 |
| 7 | CL3 operation check | PRCB CN8-10 (REM) | E-11 |
| 8 | M1 operation check | PRCB CN6-7 (LOCK) | D-9 |
| 9 | Replace PRCB. |