Konica Minolta magicolor 7450 Service Manual page 290

Field Service Ver. 1.0 May 2006
Lower Feeder Unit
General
1. Product specifications ............................................................................................. 1
Maintenance
2. Periodical check ...................................................................................................... 3
2.1 Maintenance procedure (Periodical check parts) ................................................. 3
2.1.1 Replacing the Separation Roller ................................................................... 3
2.1.2 Replacing the Feed Roller............................................................................. 5
2.1.3 Replacing the Pick-up Roller......................................................................... 9
3. Other ..................................................................................................................... 12
3.1 Disassembly/Adjustment prohibited items .......................................................... 12
3.2 Disassembly/Assembly/Cleaning list (Other parts)............................................. 13
3.2.1 Disassembly/Assembly parts list................................................................. 13
3.2.2 Cleaning parts list ....................................................................................... 13
3.3 Disassembly/Assembly procedure...................................................................... 14
3.3.1 Rear Right Cover/Rear Left Cover .............................................................. 14
3.3.2 Right Rear Cover ........................................................................................ 14
3.3.3 Control Board (PWB-Z) ............................................................................... 15
3.3.4 Paper Size Board (PWB-I) .......................................................................... 16
3.3.5 Lift-Up Motor (M3) ....................................................................................... 18
3.3.6 Paper Feed Motor (M1) ............................................................................... 18
3.3.7 Vertical Transport Motor (M2)...................................................................... 20
3.4 Cleaning procedure ............................................................................................ 22
3.4.1 Feed Roller/Pick-up Roller .......................................................................... 22
3.4.2 Separation Roller ........................................................................................ 24
3.4.3 Transport Roller........................................................................................... 25
Adjustment/Setting
4. How to use the adjustment section ....................................................................... 27
5. Sensor check......................................................................................................... 28
5.1 Check procedure ................................................................................................ 28
Troubleshooting
6. Jam Display ........................................................................................................... 31
CONTENTS
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