Ricoh DD 4450 Service Manual page 6

SP6-2 Main-scan position - ADF ........................................................ 2-21
SP6-4 Scan start position - ADF ........................................................ 2-22
2.6 TAPE DISPENSER (C651) ...................................................................... 2-23
2.6.1 ACCESSORY CHECK .................................................................... 2-23
2.6.2 INSTALLATION PROCEDURE ...................................................... 2-24
2.7 NETWORK CONTROLLER (C654) ......................................................... 2-26
2.7.1 ACCESSORY CHECK .................................................................... 2-26
2.7.2 INSTALLATION PROCEDURE ...................................................... 2-28
Prepare to install the board: Stage 1 .................................................. 2-28
Install the controller in the main machine ........................................... 2-29
2.8 OPTIONAL DRUMS (C618/C619/C620) .................................................. 2-31
3. PREVENTIVE MAINTENANCE..................................................... 3-1
3.1 MAINTENANCE TABLES .......................................................................... 3-1
4. REPLACEMENT AND ADJUSTMENT ......................................... 4-1
4.1 BEFOREHAND .......................................................................................... 4-1
4.2 SPECIAL TOOLS ....................................................................................... 4-2
4.3 IMAGE ADJUSTMENT .............................................................................. 4-3
4.3.1 SP6-10: MASTER WRITING SPEED ............................................... 4-3
4.3.2 SP6-100 TO 107: PAPER REGISTRATION ..................................... 4-4
4.3.3 SP6-05, 6-06: SCANNING SPEED - PLATEN, ADF ........................ 4-4
4.3.4 SP6-03, 6-04: SCANNING START POSITION - PLATEN, ADF ...... 4-4
4.3.5 SP6-01, 6-02: MAIN SCAN POSITION - PLATEN, ADF .................. 4-5
4.3.6 SP6-20: STANDARD WHITE EXECUTION ...................................... 4-5
4.4 COVERS AND BOARDS ........................................................................... 4-6
4.4.1 FRONT COVER, OPERATION PANEL ............................................ 4-6
4.4.2 RIGHT COVER ................................................................................. 4-8
4.4.3 LEFT COVER ................................................................................... 4-9
4.4.4 REAR COVER ................................................................................ 4-10
4.4.5 FRONT DOOR SAFETY SWITCH .................................................. 4-11
4.4.6 MPU ................................................................................................ 4-12
4.4.7 PSU ................................................................................................ 4-14
4.5 SCANNER UNIT ...................................................................................... 4-15
4.5.1 EXPOSURE GLASS ....................................................................... 4-15
4.5.2 ORIGINAL LENGTH SENSORS ..................................................... 4-17
4.5.3 EXPOSURE LAMP ......................................................................... 4-18
Reassembling .................................................................................... 4-20
4.5.4 SCANNER MOTOR ........................................................................ 4-21
C279 ii SM