Ricoh Aficio 480W Dolphin-C2 Service Manual page 21

6.7.5 BY-PASS FEED MECHANISM.......................................................6-41
6.7.6 REGISTRATION.............................................................................6-42
6.7.7 CUTTING MECHANISM.................................................................6-42
6.7.8 ROLL END DETECTION ................................................................6-43
6.7.9 CONDENSATION PREVENTION...................................................6-44
6.7.10 PAPER FEED TIMING CHART ....................................................6-45
6.8 IMAGE TRANSFER AND PAPER SEPARATION ...................................6-46
6.8.1 OVERVIEW ....................................................................................6-46
6.8.2 TRANSFER AND SEPARATION TIMING CONTROL....................6-46
6.8.3 PICK-OFF PAWL OPERATION......................................................6-47
6.9 PAPER TRANSPORT .............................................................................6-48
6.9.1 OVERVIEW ....................................................................................6-48
6.10 FUSING UNIT........................................................................................6-49
6.10.1 OVERVIEW ..................................................................................6-49
6.10.2 FUSING PRESSURE CONTROL MECHANISM ..........................6-51
6.10.3 TEMPERATURE AND PRESSURE CONTROL...........................6-52
Table 6-1 Pressure Roller and Hot Roller Temperature......................6-52
Table 6-1 (cont.) .................................................................................6-53
Table 6-2 Adjustment for Actual/Target Temperature Difference........6-54
Table 6-3 CPM Down..........................................................................6-54
6.10.4 FUSING CONTROL SETTING TABLE.........................................6-52
6.10.5 HOT ROLLER CLEANING ...........................................................6-53
6.10.6 HOT ROLLER THERMOSTATS...................................................6-53
6.10.7 FUSING UNIT DRIVE MECHANISM ............................................6-54
6.10.8 WRINKLE PREVENTION .............................................................6-55
6.11 PAPER EXIT .........................................................................................6-56
6.11.1 OVERVIEW ..................................................................................6-56
6.11.2 PAPER EXIT DRIVE.....................................................................6-56
6.11.3 PAPER EXIT ACCESS.................................................................6-56
6.11.4 SWITCHING EXITS......................................................................6-57
6.11.5 EXIT JAM DETECTION................................................................6-57
6.12 BOARDS AND BREAKER SWITCH......................................................6-58
6.12.1 BCU ..............................................................................................6-59
6.12.2 IPU................................................................................................6-60
6.12.3 FILE FORMAT CONVERTER (MLB)............................................6-61
6.12.4 IOB ...............................................................................................6-62
6.12.5 PSU ..............................................................................................6-63
6.12.6 GW CONTROLLER ......................................................................6-64
6.12.7 VDB ..............................................................................................6-64
6.12.8 RFDB............................................................................................6-64
6.12.9 FPDB ............................................................................................6-64
6.12.10 VLB.............................................................................................6-64
6.12.11 BREAKER SWITCH UNIT ..........................................................6-65
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