Service manual

G130/G131 ii SM
2.2 SERVICE MAINTENANCE........................................................................2-3
PM Counter Reset ................................................................................2-3
PM Table ..............................................................................................2-3
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT ........................................ 3-1
3.1 SPECIAL TOOLS ......................................................................................3-1
3.2 IMAGE ADJUSTMENT..............................................................................3-2
3.2.1 REGISTRATION...............................................................................3-2
Image Area ...........................................................................................3-2
Leading Edge........................................................................................3-2
Side to Side ..........................................................................................3-2
Adjustment Standard ............................................................................3-2
Paper Registration Standard.................................................................3-2
Adjustment Procedure ..........................................................................3-3
3.2.2 COLOR REGISTRATION .................................................................3-3
Line Position Adjustment ......................................................................3-3
Adjustment of Line Speed for Thick Paper............................................3-3
3.2.3 PRINTER GAMMA ...........................................................................3-4
Adjustment Overview ............................................................................3-4
Adjustment Procedure ..........................................................................3-4
3.3 DUPLEX INVERTER UNIT........................................................................3-5
3.3.1 TOP COVER ....................................................................................3-5
3.3.2 DUPLEX INVERTER MOTOR 1 AND CONTROL BOARD ..............3-5
3.3.3 DUPLEX INVERTER MOTOR 2 AND SWITCH ...............................3-7
3.3.4 EXIT SENSOR 3 AND DUPLEX INVERTER SENSOR....................3-7
3.3.5 EXIT SENSOR 1 AND 2 ...................................................................3-7
3.4 DUPLEX FEED UNIT ................................................................................3-8
3.4.1 DUPLEX DRIVE BOARD..................................................................3-8
3.4.2 DUPLEX FEED MOTOR ..................................................................3-8
3.4.3 DUPLEX FEED SENSOR.................................................................3-9
3.5 EXTERIOR COVERS ..............................................................................3-10
3.5.1 REAR COVER AND UPPER REAR COVER .................................3-10
3.5.2 PAPER EXIT TRAY ........................................................................3-10
3.5.3 UPPER RIGHT COVER .................................................................3-11
3.5.4 FRONT COVER..............................................................................3-11
3.5.5 LEFT SIDE .....................................................................................3-12
3.5.6 UPPER LEFT COVER AND OPERATION PANEL.........................3-13
3.6 LASER OPTICS ......................................................................................3-14
3.6.1 CAUTION DECAL LOCATIONS.....................................................3-14
3.6.2 LASER OPTICS HOUSING UNIT ..................................................3-15
3.6.3 POLYGON MIRROR MOTOR ........................................................3-20
3.6.4 POLYGON MIRROR MOTOR DRIVE BOARD ..............................3-21
3.6.5 LASER SYNCHRONIZING DETECTOR BOARDS ........................3-21
3.7 PCU AND DEVELOPMENT UNIT ...........................................................3-22
3.8 PAPER FEED..........................................................................................3-23
3.8.1 PICK-UP, FEED, AND SEPARATION ROLLERS ..........................3-23