Ricoh C231 Service Manual page 21

3.3 SCANNER .................................................................................................3-4
3.3.1 EXPOSURE GLASS / SCALES........................................................3-4
3.3.2 SBU AND LAMP STABILIZER / SCANNER MOTOR.......................3-4
3.3.3 SCANNER H.P. SENSOR / PLATEN COVER SENSOR .................3-5
3.3.4 EXPOSURE LAMP (XENON LAMP) ................................................3-6
3.3.5 SCANNER WIRES ...........................................................................3-7
Installation.............................................................................................3-7
3.3.6 IMAGE ADJUSTMENT .....................................................................3-9
3.4 MASTER EJECT .....................................................................................3-10
3.4.1 MASTER EJECT UNIT ...................................................................3-10
3.5 MASTER FEED .......................................................................................3-11
3.5.1 MASTER MAKING UNIT ................................................................3-11
3.5.2 THERMAL HEAD............................................................................3-11
Installation...........................................................................................3-12
3.5.3 THERMAL HEAD VOLTAGE ADJUSTMENT.................................3-13
3.5.4 MASTER END SENSOR ADJUSTMENT .......................................3-14
3.6 PAPER FEED..........................................................................................3-15
3.6.1 PICK-UP ROLLER / PAPER FEED ROLLER / FRICTION PAD.....3-15
3.6.2 PAPER SEPARATION PRESSURE ADJUSTMENT......................3-15
3.6.3 PAPER WIDTH DETECTION BOARD ...........................................3-16
3.7 PRINTING ...............................................................................................3-17
3.7.1 PRESS ROLLER ............................................................................3-17
3.7.2 PRESS ROLLER RELEASE LEVER ADJUSTMENT .....................3-18
3.7.3 PRINTING PRESSURE ADJUSTMENT.........................................3-19
3.8 DRUM......................................................................................................3-20
3.8.1 PREPARATION ..............................................................................3-20
3.8.2 CLOTH SCREEN............................................................................3-20
Installation...........................................................................................3-21
3.8.3 CLAMPER / METAL SCREEN .......................................................3-22
Installation...........................................................................................3-23
3.8.4 INK PUMP ADJUSTMENT .............................................................3-24
3.8.5 INK ROLLER UNIT / INK ROLLER ONE-WAY CLUTCH ...............3-26
3.8.6 DOCTOR ROLLER GAP ADJUSTMENT .......................................3-27
3.8.7 INK DETECTION ADJUSTMENT ...................................................3-28
3.8.8 MAIN MOTOR PULLEY POSITION................................................3-28
3.8.9 MAIN DRIVE TIMING BELT ADJUSTMENT ..................................3-28
3.9 PAPER DELIVERY..................................................................................3-29
3.9.1 PAPER DELIVERY UNIT ...............................................................3-29
3.9.2 DELIVERY BELT / PAPER EXIT SENSOR....................................3-29
3.9.3 EXIT PAWL ADJUSTMENT ...........................................................3-30
Clearance adjustment .........................................................................3-30
Timing adjustment...............................................................................3-31
3.9.4 AIR PUMP ADJUSTMENT .............................................................3-32
3.10 SPECIAL TOOLS ..................................................................................3-33
SM C231/C237/C238/C248/C267
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