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92-01, 92-02, 92-03, 92-04 (bizhub 4750i/4050i)
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Contents
| JAM type | Misfeed at duplex pre-registration section |
| JAM code | 92-01, 92-02, 92-03, 92-04 |
| JAM detection timing | 92-01: The leading edge of the paper is not turned ON (blocked) the registration sensor (PS9) even after the lapse of a given period of time after a duplex paper feed sequence has been started. |
| 92-02: After the start of the second-side feed of paper in the duplex mode, loop forming has not been complete before the second side of a sheet enters the registration roller because the rise timing of load to perform registration is earlier than the rise timing of load to form a loop. | |
| 92-03: For the second-side feed of paper in the duplex mode, the image write start signal permit continues to be disabled for a predetermined period of time after the timing of the image write start signal output. | |
| 92-04: The leading edge of the paper is not turned OFF (blocked) the ADU transport sensor (PS11) even after the lapse of a given period of time after a duplex paper feed sequence has been started. | |
| – Paper jam of a sheet of paper left at the duplex pre-registration section results, if a sheet of paper is determined to exist at a position detected when the main power switch is turned ON, a door is opened and closed, or a misfeed or malfunction is reset. | |
| Misfeed processing location | Right door |
| Relevant parts | -Main motor (M1) -Registration clutch (CL4) -ADU transport clutch (CL5) -Registration sensor (PS9) -ADU transport sensor (PS11) -Base board (BASEB) |
Procedure
| Step | Action | Control signal | Location of electrical component |
|---|---|---|---|
| 1 | Initial check items | – | – |
| 2 | PS9 I/O check, sensor check | BASEB CN22EA-13 (ON) | 13-C |
| 3 | PS11 I/O check, sensor check | BASEB CN23E-6 (ON) | 9-K |
| 4 | CL4 load check • Check code: 21 • Multi code: 3 | BASEB CN22EA-3 (ON) | 12-C |
| 5 | CL5 load check • Check code: 81 • Multi code: 1 | BASEB CN23E-12 (ON) | 9-K |
| 6 | M1 load check • Check code: 40 • Multi code: 1, 2 | BASEB CN17E-1 to 5 | 1-C |
| 7 | Replace BASEB. 4750i (Part# ACT9H02013) 4050i (Part# ACT9H02002) | – | – |