Gestetner B147 Service Manual page 15

3.2.2 ARDF................................................................................................3-4
ARDF side-to-side and leading edge registration .................................3-4
3.2.3 REGISTRATION...............................................................................3-5
Image Area ...........................................................................................3-5
Leading Edge........................................................................................3-5
Side to Side ..........................................................................................3-5
Adjustment Standard ............................................................................3-5
Paper Registration Standard.................................................................3-5
Adjustment Procedure ..........................................................................3-6
3.2.4 COLOR REGISTRATION .................................................................3-6
Line Position Adjustment ......................................................................3-6
Adjustment of Line Speed for Thick Paper............................................3-6
3.2.5 PRINTER GAMMA CORRECTION ..................................................3-7
Copy Mode ...........................................................................................3-7
Printer Mode .......................................................................................3-11
3.3 DUPLEX INVERTER UNIT......................................................................3-13
3.3.1 TOP COVER ..................................................................................3-13
3.3.2 DUPLEX CONTROL BOARD .........................................................3-13
3.3.3 DUPLEX INVERTER MOTOR 1 .....................................................3-14
3.3.4 DUPLEX INVERTER MOTOR 2 AND SWITCH .............................3-15
3.3.5 EXIT SENSOR 3 AND DUPLEX INVERTER SENSOR..................3-15
3.3.6 EXIT SENSOR 1 AND 2 .................................................................3-15
3.4 DUPLEX FEED UNIT ..............................................................................3-16
3.4.1 DUPLEX DRIVE BOARD................................................................3-16
3.4.2 DUPLEX FEED MOTOR ................................................................3-16
3.4.3 DUPLEX FEED SENSOR...............................................................3-17
3.5 EXTERIOR COVERS ..............................................................................3-18
3.5.1 REAR, FRONT, AND RIGHT SIDES ..............................................3-18
3.5.2 LEFT SIDE .....................................................................................3-20
3.5.3 OPERATION PANEL AND SCANNER COVERS...........................3-21
3.6 SCANNER UNIT......................................................................................3-22
3.6.1 EXPOSURE GLASS.......................................................................3-22
3.6.2 ORIGINAL LENGTH/WIDTH SENSOR ..........................................3-22
3.6.3 SENSOR BOARD UNIT (SBU).......................................................3-23
3.6.4 EXPOSURE LAMP STABILIZER ...................................................3-24
3.6.5 XENON LAMP ................................................................................3-24
3.6.6 SCANNER POWER SUPPLY UNIT (PSU) ....................................3-25
3.6.7 SCANNER MOTOR........................................................................3-25
3.6.8 FRONT SCANNER WIRE ..............................................................3-26
3.6.9 REAR SCANNER WIRE.................................................................3-29
3.6.10 TOUCH PANEL POSITION ADJUSTMENT .................................3-32
3.7 LASER OPTICS ......................................................................................3-33
3.7.1 CAUTION DECAL LOCATIONS .....................................................3-33
3.7.2 LASER OPTICS HOUSING UNIT ..................................................3-34
Adjustments after Replacing the Laser Optics Housing Unit...............3-39
3.7.3 POLYGON MIRROR MOTOR ........................................................3-40
3.7.4 LASER SYNCHRONIZING DETECTOR BOARDS ........................3-40
3.8 PCU AND DEVELOPMENT UNIT ...........................................................3-41
SM iii B147/B149/B190