Ricoh A250/B001 Servis Kılavuzu - Sayfa 28
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6.2 SCANNER ................................................................................................ 6-5
6.2.1 EXPOSURE GLASS REMOVAL...................................................... 6-5
6.2.2 LENS BLOCK REMOVAL ................................................................ 6-7
6.2.3 EXPOSURE LAMP REPLACEMENT .............................................. 6-8
6.2.4 1ST SCANNER ALIGNMENT ADJUSTMENT ................................. 6-9
6.2.5 2ND SCANNER POSITION ADJUSTMENT .................................. 6-10
6.3 LASER UNIT........................................................................................... 6-11
6.3.1 CAUTION DECAL LOCATIONS .................................................... 6-11
6.3.2 LASER UNIT/TONER SHIELD GLASS REMOVAL ....................... 6-12
6.3.3 LD UNIT/LASER SYNCHRONIZATION DETECTOR
REMOVAL ..................................................................................... 6-13
6.3.4 EXIT TRAY PAPER SENSOR REMOVAL..................................... 6-13
6.3.5 POLYGONAL MIRROR MOTOR REMOVAL................................. 6-14
6.3.6 LASER UNIT ALIGNMENT ADJUSTMENT ................................... 6-15
6.4 IMAGE TRANSFER ................................................................................ 6-16
6.4.1 TRANSFER ROLLER REMOVAL.................................................. 6-16
6.5 FUSING .................................................................................................. 6-17
6.5.1 FUSING UNIT REMOVAL ............................................................. 6-17
6.5.2 HOT ROLLER, FUSING LAMP AND THERMOFUSE
REPLACEMENT ............................................................................ 6-18
6.5.3 PRESSURE ROLLER REPLACEMENT ........................................ 6-20
6.5.4 FUSING THERMISTOR REPLACEMENT ..................................... 6-21
6.5.5 HOT ROLLER STRIPPER PAWL REPLACEMENT ...................... 6-22
6.6 PAPER FEED ......................................................................................... 6-23
6.6.1 PAPER FEED ROLLER REPLACEMENT ..................................... 6-23
6.6.2 FRICTION PAD REPLACEMENT.................................................. 6-24
6.6.3 STANDARD TRAY PAPER FEED CLUTCH REPLACEMENT...... 6-25
6.6.4 VERTICAL TRANSPORT ROLLER/SENSOR/
CLUTCH REPLACEMENT ............................................................ 6-26
6.6.5 BY-PASS FEED ROLLER REPLACEMENT.................................. 6-27
6.6.6 BY-PASS FEED FRICTION PAD REPLACEMENT....................... 6-28
6.6.7 BY-PASS FEED SENSOR REPLACEMENT ................................. 6-29
6.6.8 BY-PASS TRAY REMOVAL .......................................................... 6-30
6.6.9 BY-PASS FEED PAPER WIDTH SENSOR REMOVAL ................ 6-31
6.6.10 REGISTRATION ROLLER REMOVAL ........................................ 6-32
6.6.11 REGISTRATION SENSOR REPLACEMENT .............................. 6-33
6.6.12 TONER END SENSOR REPLACEMENT .................................... 6-34
6.7 OTHERS................................................................................................. 6-35
6.7.1 MAIN MOTOR/GEAR BOX REPLACEMENT ................................ 6-35
6.7.2 IOB (INPUT OUTPUT BOARD) REPLACEMENT ......................... 6-36
6.7.3 BICU (BASE-ENGINE IMAGE CONTROL UNIT)
REPLACEMENT ............................................................................ 6-37
6.7.4 POWER SUPPLY UNIT AND B/C/T POWER PACK
REPLACEMENT ............................................................................ 6-38
6.8 STANDARD WHITE DENSITY ADJUSTMENT ...................................... 6-39
6.9 COPY ADJUSTMENT PRINTING/SCANNING....................................... 6-40
6.9.1 PRINTING...................................................................................... 6-40
6.9.2 SCANNING .................................................................................... 6-42
....................................... 6-44