Ricoh Aficio 480W Dolphin-C2 Service Manual page 17

3.6.9 REGISTRATION CLUTCH .............................................................3-36
3.6.10 REGISTRATION ROLLER ...........................................................3-36
3.7 TRANSFER UNIT....................................................................................3-37
3.7.1 TRANSFER AND SEPARATION CORONA WIRES ......................3-37
3.7.2 TRANSPORT UNIT ........................................................................3-38
3.7.3 TRANSPORT BELTS .....................................................................3-39
3.8 FUSING SECTION ..................................................................................3-40
3.8.1 FUSING UNIT.................................................................................3-40
3.8.2 PAPER JUNCTION GATE SOLENOID/EXIT SENSOR .................3-42
3.8.3 FPDB (FUSING PRESSURE DRIVE BOARD) ...............................3-42
3.8.4 PRESSURE ROLLER STRIPPERS/PRESSURE MOTORS ..........3-43
Pressure roller strippers......................................................................3-43
Right motor .........................................................................................3-43
Left motor............................................................................................3-43
3.8.5 PRESSURE ROLLER THERMISTOR ............................................3-43
3.8.6 HOT ROLLER THERMISTOR, THERMOSTATS ...........................3-44
3.8.7 FUSING CLEANING ROLLER .......................................................3-45
3.8.8 FUSING LAMPS .............................................................................3-46
Left end...............................................................................................3-46
3.8.9 HOT ROLLER, PRESSURE ROLLER............................................3-47
After Replacing Hot Roller or Pressure Roller.....................................3-48
3.8.10 FUSING DRIVE MOTOR..............................................................3-49
3.9 BOARDS .................................................................................................3-50
3.9.1 PSU (POWER SUPPLY UNIT).......................................................3-50
3.9.2 BCU, IOB........................................................................................3-51
3.9.3 VLB.................................................................................................3-52
3.9.4 MB, FILE FORMAT CONVERTER (MLB), CNB1, CNB2 ...............3-54
3.9.5 GW CONTROLLER, IPU ................................................................3-55
3.9.6 HDD REPLACEMENT ....................................................................3-56
Before Replacement ...........................................................................3-56
HDD Replacement ..............................................................................3-57
Important Notes About HDD Replacement .........................................3-58
3.9.7 NVRAM...........................................................................................3-59
To Upload NVRAM to an SD Card......................................................3-59
To Replace the NVRAM......................................................................3-59
After Replacement ..............................................................................3-60
To Download NVRAM Data from the SD Card ...................................3-60
3.10 ADJUSTMENTS ....................................................................................3-61
3.10.1 CIS AND WHITE PLATEN ROLLER ADJUSTMENT ...................3-61
3.10.2 LPH ADJUSTMENT......................................................................3-62
Summary ............................................................................................3-62
Entering the LPH Factory Adjustments ...............................................3-62
Printing and Checking the Test Pattern ..............................................3-63
3.10.3 IMAGE POSITION, MAGNIFICATION,
MARGIN ADJUSTMENTS...........................................................3-66
1. Skew adjustment for long printouts...................................................3-67
2. Printer sub-scan magnification adjustment .......................................3-68
3. To set the scanner mask for the adjustments ...................................3-69
4. To set the erase margin....................................................................3-69
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