Ricoh D131 Service Manual page 1304

2.1.1 GENERAL LAYOUT .......................................................................... 22
2.1.2 ELECTRICAL COMPONENTS .......................................................... 24
2.1.3 SUMMARY OF ELECTRICAL COMPONENTS ................................. 28
2.1.4 DRIVE LAYOUT ................................................................................. 38
2.2 JUNCTION GATES ..................................................................................... 40
2.2.1 PROOF MODE .................................................................................. 40
2.2.2 SHIFT MODE ..................................................................................... 40
2.2.3 STAPLE MODE ................................................................................. 41
2.3 PRE-STACKING ......................................................................................... 42
2.4 TRAY MOVEMENT MECHANISM .............................................................. 44
2.4.1 UPPER TRAY .................................................................................... 44
2.4.2 LOWER TRAY (B804 ONLY) ............................................................. 46
2.5 CORNER STAPLING .................................................................................. 49
2.5.1 STACKING AND JOGGING ............................................................... 49
2.5.2 STAPLER MOVEMENT ..................................................................... 50
2.5.3 CORNER STAPLING ......................................................................... 52
2.6 BOOKLET STAPLING (B804 ONLY) .......................................................... 53
2.6.1 BOOKLET PRESSURE MECHANISM .............................................. 53
2.6.2 BOOKLET STAPLING AND FOLDING .............................................. 54
2.6.3 BOOKLET STAPLING AND FOLDING MECHANISMS ..................... 60
2.7 UPPER TRAY OUTPUT ............................................................................. 63
2.7.1 FEED OUT ......................................................................................... 63
2.7.2 FEED OUT STACKING...................................................................... 64
2.8 PUNCH UNIT B702 (FOR B804/B805) ....................................................... 65
2.8.1 OVERVIEW OF OPERATION ............................................................ 65
2.8.2 PUNCH MECHANISMS ..................................................................... 67
2.8.3 PUNCH HOPPER MECHANISM ....................................................... 70
2.9 FINISHER JAM DETECTION ..................................................................... 72
B804/B805/D373/D374/D612 ii SM