Table Of Contents - Gestetner G056 Service Manual

INSTALLATION
1. INSTALLATION .......................................................................... 1-1
1.1 INSTALLATION REQUIREMENTS ...........................................................1-1
1.1.1 ENVIRONMENT ...............................................................................1-1
1.1.2 MACHINE LEVEL .............................................................................1-1
1.1.3 MACHINE SPACE REQUIREMENT.................................................1-1
1.1.4 POWER REQUIREMENTS ..............................................................1-2
1.2 MACHINE INSTALLATION .......................................................................1-2
1.3 OPTIONAL UNIT INSTALLATION.............................................................1-2
PREVENTIVE MAINTENANCE
2. PREVENTIVE MAINTENANCE................................................... 2-1
2.1 USER MAINTENANCE .............................................................................2-1
2.2 SERVICE MAINTENANCE........................................................................2-2
REPLACEMENT AND ADJUSTMENT
3. REPLACEMENT AND ADJUSTMENT........................................ 3-1
3.1 SPECIAL TOOLS ......................................................................................3-1
3.2 EXTERIOR COVERS ................................................................................3-2
3.3 LASER UNIT .............................................................................................3-3
3.3.1 CAUTION DECAL LOCATIONS .......................................................3-3
3.3.2 POLYGON MIRROR MOTOR ..........................................................3-4
3.3.3 LASER SYNCHRONIZATION DETECTOR......................................3-4
3.3.4 LASER UNIT ....................................................................................3-5
3.3.5 LASER DIODE UNIT ........................................................................3-7
Laser beam pitch adjustment................................................................3-8
3.4 TRANSFER ROLLER................................................................................3-9
3.5 TONER END SENSOR .............................................................................3-9
3.6 FUSING ...................................................................................................3-10
3.6.1 FUSING UNIT.................................................................................3-10
3.6.2 HOT ROLLER AND FUSING LAMP ...............................................3-11
3.6.3 THERMISTOR AND THERMOSTAT..............................................3-13
3.7 PAPER FEED..........................................................................................3-14
3.7.1 FEED ROLLER...............................................................................3-14
3.7.2 FRICTION PAD ..............................................................................3-14
3.8 BY-PASS TRAY ......................................................................................3-15
3.8.1 BY-PASS TRAY UNIT AND BY-PASS FEED ROLLER .................3-15
3.9 PRINTER CONTROLLER BOARD..........................................................3-16
3.10 ENGINE BOARD ...................................................................................3-16
SM
G056/G058

TABLE OF CONTENTS

i G056/G058/G073/G074