20-20 (bizhub 958/808)
Contents
| JAM type | Misfeed at vertical transport section |
| JAM code | 20-20 |
| JAM detection timing | The tray 1 vertical transport sensor (PS4) is not turned ON even after the lapse of a given period of time after the tray 2 vertical transport sensor (PS12) turns ON by a paper. |
| Misfeed processing location | • Manual bypass tray door • Lower right door |
| Relevant parts | • Tray 1 vertical transport motor (M5) • Tray 2 vertical transport motor (M7) • Tray 1 vertical transport sensor (PS4) • Tray 2 vertical transport sensor (PS12) • Registration sensor (PS38) • OHP sensor (PS40) • Paper feed/transport drive board (PFTDB) • MFP board (MFPB) |
Procedure
| Step | Action | Control signal | Location of electrical component |
|---|---|---|---|
| 1 | Initial check items | – | – |
| 2 | PS4 I/O check, sensor check | PFTDB CN14-8 (ON) | 1-P |
| 3 | PS12 I/O check, sensor check | PFTDB CN12-10 (ON) | 3-P |
| 4 | PS38 I/O check, sensor check | PFTDB CN2-6 (ON) | 4-P |
| 5 | PS40 I/O check, sensor check | PFTDB CN2-3 (REM) | 4-P |
| 6 | M5 operation check | PFTDB CN10-5 to 8 | 13-P |
| 7 | M7 operation check | PFTDB CN10-9 to 12 | 13-P |
| 8 | PFTDB F13 conduction check | – | – |
| 9 | Replace PFTDB. (Part# A796H00200) | – | – |
| 10 | Replace MFPB. (Part# A796H02003) | – | – |
- Link to the wiring diagram (bizhub 958/808/758, bizhub PRO 958)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.1.7.1 (Link to the Field Service Manual)