SM xiii D014/D015/D078/D079
IPU/VBCU Removal ....................................................................3-110
VBCU Replacement ....................................................................3-112
3.8.4 HDD .........................................................................................3-113
Before replacing the HDD unit.....................................................3-113
Replacement Procedure..............................................................3-113
After installing the new HDD unit.................................................3-114
3.8.5 PFB..........................................................................................3-116
3.8.6 HVPS .......................................................................................3-117
3.8.7 CHARGE ROLLER POWER PACK .........................................3-118
3.8.8 POTENTIAL SENSOR POWER PACK....................................3-118
3.8.9 DRB .........................................................................................3-119
3.8.10 DTMB .................................................................................3-120
3.8.11 PSU....................................................................................3-121
3.8.12 AC DRIVE BOARD.............................................................3-122
3.8.13 MEMORY ...........................................................................3-123
3.8.14 NVRAM ..............................................................................3-124
Before You Begin….....................................................................3-124
Upload NVRAM Data to SD Card................................................3-124
Replace NVRAM .........................................................................3-124
Download NVRAM Data from SD Card.......................................3-125
3.9 MOTORS ..........................................................................................3-126
3.9.1 DRUM CLEANING MOTORS ..................................................3-127
3.9.2 DEVELOPMENT MOTORS .....................................................3-127
3.9.3 DRUM MOTOR........................................................................3-128
Drum Motor Removal ..................................................................3-128
Drum Motor Reinstallation...........................................................3-129
3.9.4 FUSING/EXIT MOTOR ............................................................3-130
3.9.5 PTR MOTOR ...........................................................................3-131
3.9.6 ITB DRIVE MOTOR .................................................................3-132
3.10 AIR FILTERS AND OZONE FILTERS.........................................3-134
3.10.1 UPPER FILTER BOX .........................................................3-135
3.10.2 MIDDLE FILTER BOX........................................................3-136
3.10.3 LOWER FILTER BOX ........................................................3-137
3.11 FIRMWARE UPDATE .................................................................3-138
3.11.1 BEFORE YOU BEGIN… ....................................................3-138
3.11.2 FIRMWARE UPDATE PROCEDURE.................................3-139
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