Konica-Minolta bizhub C253
Troubleshooting. Jam 05. Misfeed at manual bypass feed section
Detection timing
Type | Description |
---|---|
Detection of misfeed at manual bypass feed section | • The leading edge of the paper does not turn ON the sensor in front of tim. roller (PS23) even after the lapse of a given period of time after the manual bypass tray starts to feed paper. |
Manual bypass feed section loop registration reversing jam | • For paper fed from the manual bypass, loop forming has not been complete before a sheet enters the timing roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop. |
Manual bypass feed section TOD permit waiting jam | • For paper fed from the manual bypass, TOD permit continues to be disabled for a predetermined period of time after the timing of TOD output. |
Relevant electrical parts
Transport motor (M1)
Manual paper feed clutch (CL4)
Sensor in front of tim. roller (PS23)
Printer control board (PRCB)
Action
Step | Action | Control signal | Location |
---|---|---|---|
1 | Initial check items. | ||
2 | PS4 I/O check, sensor check | PRCB CN1PRCB-3 (ON) | D-18 |
3 | CL4 operation check | PRCB CN6PRCB-2 (ON) | |
4 | M1 operation check | PRCB CN34PRCB-10 (REM) PRCB CN34PRCB-13 (LOCK) |
D-23 |
5 | Change PRCB |