C279  ii  SM 
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