Ricoh G147 - Paper Feed Unit Pb3020 G839

SM i G839
PAPER FEED UNIT PB3020 G839
TABLE OF CONTENTS
1. REPLACEMENT AND ADJUSTMENT ............................................1
1.1 COVER REPLACEMENT.............................................................................1
Right Cover.............................................................................................. 1
Rear Cover ..............................................................................................1
1.2 ROLLER REPLACEMENT ........................................................................... 2
1.2.1 PAPER FEED, SEPARATION, AND PICK-UP ROLLERS .................. 2
Pick-up Roller ..........................................................................................2
Paper Feed Roller.................................................................................... 2
Separation Roller ..................................................................................... 2
1.3 TRAY MOTOR REPLACEMENT.................................................................. 3
1.4 PAPER FEED AND RELAY Clutch REPLACEMENT...................................4
1.5 Paper FEED UNIT REPLACEMENT ............................................................ 5
Upper Paper Feed Unit ............................................................................ 6
Lower Paper Feed Unit ............................................................................ 6
1.6 PAPER END, TRAY LIFT, AND RELAY SENSOR REPLACEMENT........... 7
Paper End Sensor ................................................................................... 7
Tray Lift Sensor .......................................................................................7
Relay Sensor ...........................................................................................7
2. SERVICE TABLES...........................................................................8
2.1 DIP SWITCHES............................................................................................8
2.2 test points .....................................................................................................8
2.3 switches........................................................................................................ 8
2.4 fuses............................................................................................................. 8
3. DETAILED DESCRIPTIONS ............................................................9
3.1 MECHANICAL COMPONENT LAYOUT ......................................................9
3.2 ELECTRICAL COMPONENT LAYOUT...................................................... 10
3.3 ELECTRICAL COMPONENT DESCRIPTION............................................ 11
3.4 DRIVE LAYOUT ......................................................................................... 12
3.5 Pick-up and separation roller release mechanism ...................................... 13
3.6 Paper lift mechanism .................................................................................. 14
3.7 Paper end detection ...................................................................................16
3.8 Paper Height Detection ..............................................................................17
4. SPECIFICATIONS..........................................................................18