Gestetner G060 Service Manual page 18

3.3 EXTERIOR COVERS ............................................................................... 3-5
3.3.1 REAR COVER AND UPPER REAR COVER................................... 3-5
3.3.2 PAPER EXIT TRAY ......................................................................... 3-5
3.3.3 UPPER RIGHT COVER................................................................... 3-5
3.3.4 FRONT COVER............................................................................... 3-6
3.3.5 LEFT COVER AND REAR LEFT COVER ....................................... 3-6
3.3.6 UPPER LEFT COVER AND OPERATION PANEL.......................... 3-7
3.4 LASER OPTICS........................................................................................ 3-8
3.4.1 CAUTION DECAL LOCATIONS ...................................................... 3-8
3.4.2 LASER OPTICS HOUSING UNIT.................................................... 3-9
Adjustments after Replacing the Laser Optics Housing Unit.............. 3-11
3.4.3 POLYGON MIRROR MOTOR ....................................................... 3-12
3.4.4 LASER SYNCHRONIZING DETECTOR BOARDS ....................... 3-12
3.5 PCU AND DEVELOPMENT UNIT .......................................................... 3-13
3.6 PAPER FEED ......................................................................................... 3-14
3.6.1 PICK-UP, FEED, AND SEPARATION ROLLERS.......................... 3-14
Tray 1 and Tray 2............................................................................... 3-14
By-pass Tray ...................................................................................... 3-14
3.6.2 PAPER WIDTH DETECTION BOARD........................................... 3-15
3.6.3 VERTICAL TRANSPORT SENSOR .............................................. 3-15
3.6.4 RIGHT DOOR UNIT....................................................................... 3-16
3.6.5 REGISTRATION SENSOR AND RELAY SENSOR....................... 3-17
3.6.6 PAPER FEED CLUTCHES ............................................................ 3-17
3.6.7 BY-PASS FEED CLUTCH ............................................................. 3-18
3.6.8 TRAY LIFT MOTOR....................................................................... 3-18
3.7 TRANSFER AND PAPER TRANSPORT UNIT ...................................... 3-19
3.7.1 TRANSFER UNIT .......................................................................... 3-19
3.7.2 TRANSFER BELT CLEANING UNIT ............................................. 3-21
3.7.3 CLEANING BLADE AND CLEANING ROLLER............................. 3-22
3.7.4 TRANSFER BELT.......................................................................... 3-23
3.7.5 OTHERS ........................................................................................ 3-27
Front Plate ......................................................................................... 3-27
Grounding Spring ............................................................................... 3-27
Drive Gear and Left Drive Roller ........................................................ 3-27
3.8 FUSING .................................................................................................. 3-28
3.8.1 FUSING UNIT ................................................................................ 3-28
3.8.2 OIL SUPPLY UNIT......................................................................... 3-29
3.8.3 UPPER COVER............................................................................. 3-29
3.8.4 FUSING BELT UNIT ...................................................................... 3-30
3.8.5 PRESSURE ROLLER.................................................................... 3-33
3.8.6 PAPER EXIT.................................................................................. 3-35
3.9 ELECTRICAL COMPONENTS ............................................................... 3-36
3.9.1 MOVING THE CONTROLLER BOX OUT OF THE WAY .............. 3-36
3.9.2 MOVING THE HIGH VOLTAGE SUPPLY UNIT -
C, B OUT OF THE WAY................................................................ 3-36
3.9.3 CONTROLLER AND BCU ............................................................. 3-37
3.9.4 NVRAM REPLACEMENT PROCEDURE ...................................... 3-38
NVRAM for BCU ................................................................................ 3-38
NVRAM for Controller ........................................................................ 3-38
G060 ii SM