Ricoh B039 Service Manual page 12

REPLACEMENT AND ADJUSTMENT
3 REPLACEMENT AND ADJUSTMENT......................................... 3-1
3.1 GENERAL CAUTIONS..............................................................................3-1
3.1.1 PCU (PHOTOCONDUCTOR UNIT) .................................................3-1
3.1.2 TRANSFER ROLLER .......................................................................3-1
3.1.3 SCANNER UNIT...............................................................................3-1
3.1.4 LASER UNIT ....................................................................................3-2
3.1.5 FUSING UNIT...................................................................................3-2
3.1.6 PAPER FEED...................................................................................3-2
3.1.7 IMPORTANT ....................................................................................3-2
3.2 SPECIAL TOOLS AND LUBRICANTS ......................................................3-2
3.3 EXTERIOR COVERS & OPERATION PANEL ..........................................3-3
3.3.1 REAR COVER..................................................................................3-3
3.3.2 REAR LOWER COVER (TWO-TRAY MODELS ONLY)...................3-3
3.3.3 COPY TRAY.....................................................................................3-4
3.3.4 LEFT UPPER COVER......................................................................3-4
3.3.5 FRONT UPPER LEFT COVER AND OPERATION PANEL .............3-4
3.3.6 RIGHT UPPER COVER ...................................................................3-4
3.3.7 TOP REAR COVER..........................................................................3-4
3.3.8 LEFT COVER ...................................................................................3-5
3.3.9 FRONT LONG COVER ....................................................................3-5
3.3.10 FRONT RIGHT COVER .................................................................3-6
3.3.11 RIGHT REAR COVER....................................................................3-6
3.3.12 RIGHT DOOR.................................................................................3-7
3.3.13 BY-PASS TRAY..............................................................................3-8
3.3.14 LEFT LOWER COVER (TWO-TRAY MODELS ONLY)..................3-9
3.3.15 RIGHT LOWER COVER (TWO-TRAY MODELS ONLY) ...............3-9
3.3.16 PLATEN COVER SENSOR............................................................3-9
3.4 SCANNER SECTION ..............................................................................3-10
3.4.1 EXPOSURE GLASS/DF EXPOSURE GLASS ...............................3-10
Exposure Glass ..................................................................................3-10
DF Exposure Glass.............................................................................3-10
3.4.2 LENS BLOCK .................................................................................3-11
3.4.3 EXPOSURE LAMP, LAMP STABILIZER BOARD ..........................3-11
3.4.4 ORIGINAL WIDTH SENSOR..........................................................3-12
3.4.5 ORIGINAL LENGTH SENSOR.......................................................3-12
Sensor Positions.................................................................................3-12
3.4.6 CHANGING THE ORIGINAL SENSOR POSITIONS (8K/16K) ......3-13
Procedure ...........................................................................................3-14
3.4.7 SCANNER MOTOR........................................................................3-15
3.4.8 SCANNER H.P. SENSOR ..............................................................3-15
3.4.9 ADJUSTMENT OF 2ND SCANNER POSITION.............................3-16
3.4.10 ADJUSTMENT OF 1ST AND 2ND SCANNER ALIGNMENT .......3-17
3.5 LASER UNIT ...........................................................................................3-18
3.5.1 LOCATION OF "CAUTION" DECAL ...............................................3-18
3.5.2 TONER SHIELD GLASS ................................................................3-19
3.5.3 LASER UNIT ..................................................................................3-19
B039/B040/B043 ii SM