Ricoh Aficio 220 Service Manual page 6

2.8.2 PAPER FEED DRIVE MECHANISM ............................................. 2-55
2.8.3 PAPER FEED AND SEPARATION MECHANISM......................... 2-56
2.8.4 PAPER LIFT MECHANISM............................................................ 2-57
2.8.5 PAPER END DETECTION............................................................. 2-58
2.8.6 PAPER HEIGHT DETECTION....................................................... 2-59
2.8.7 FEED PRESSURE ADJUSTMENT FOR PAPER SIZE ................. 2-60
Overview ............................................................................................ 2-60
Paper Size Thresholds....................................................................... 2-60
Feed Pressure Adjustment................................................................. 2-61
Effect of the Amount of Remaining Paper .......................................... 2-61
2.8.8 PAPER SIZE DETECTION ............................................................ 2-63
2.8.9 SPECIAL PAPER SETTING .......................................................... 2-64
2.8.10 SIDE AND END FENCES ............................................................ 2-65
Side Fences ....................................................................................... 2-65
End Fence.......................................................................................... 2-65
2.8.11 PAPER REGISTRATION ............................................................. 2-66
2.9 IMAGE TRANSFER AND PAPER SEPARATION .................................. 2-67
2.9.1 OVERVIEW ................................................................................... 2-67
2.9.2 IMAGE TRANSFER CURRENT TIMING ....................................... 2-68
2.9.3 TRANSFER ROLLER CLEANING ................................................. 2-69
2.9.4 PAPER SEPARATION MECHANISM............................................ 2-69
2.10 IMAGE FUSING AND PAPER EXIT ..................................................... 2-70
2.10.1 OVERVIEW ................................................................................. 2-70
2.10.2 FUSING DRIVE AND RELEASE MECHANISM........................... 2-71
2.10.3 FUSING ENTRANCE GUIDE SHIFT MECHANISM .................... 2-72
2.10.4 PRESSURE ROLLER.................................................................. 2-73
2.10.5 CLEANING MECHANISM............................................................ 2-73
2.10.6 FUSING TEMPERATURE CONTROL......................................... 2-74
Temperature Control .......................................................................... 2-74
Fusing Lamp Control.......................................................................... 2-75
2.10.7 OVERHEAT PROTECTION......................................................... 2-76
2.10.8 PAPER EXIT................................................................................ 2-76
2.11 ENERGY SAVER MODES ................................................................... 2-77
2.11.1 OVERVIEW ................................................................................. 2-77
2.11.2 ENERGY SAVER MODE ............................................................. 2-78
Entering the energy saver mode ........................................................ 2-78
What happens in energy saver mode................................................. 2-78
Return to stand-by mode.................................................................... 2-78
2.11.3 LOW POWER MODE .................................................................. 2-79
Entering the low power mode............................................................. 2-79
What happens in low power mode ..................................................... 2-79
Return to stand-by mode.................................................................... 2-79
2.11.4 AUTO OFF MODE ....................................................................... 2-80
Entering auto off mode....................................................................... 2-80
What happens in auto off mode ......................................................... 2-80
Returning to stand-by mode ............................................................... 2-80
Disabling auto off mode ..................................................................... 2-80
2.11.5 NIGHT MODE .............................................................................. 2-81
Entering night stand-by and night modes........................................... 2-81
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