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IV –
28
1.22 Cleaning of High-voltage Contacts and Grounding Contacts
If any toner particles, paper dust or dirt are on the contacts, clean them out. This will ensure
that power flows correctly to enable printing.
1
2
7
For developer
roller
6
For corona wire
5
For grid
4
For cleaner
roller
3
For transfer
roller
Grounding Contacts
High-voltage Contacts
Drum grounding
board
Gear drive unit
2
1
2
1
3
4
5
7
6
3
4
5
6
7
High-voltage
power supply
PCB
Drum unit
Summary of Contents for MFC 4550
Page 5: ...CHAPTER I GENERAL DESCRIPTION ...
Page 14: ...CHAPTER II INSTALLATION ...
Page 15: ...CONTENTS 1 INSTALLING THE UPDATE DATA TO THE FACSIMILE EQUIPMENT II 1 ...
Page 18: ...CHAPTER III THEORY OF OPERATION ...
Page 49: ...CHAPTER IV DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 81: ...CHAPTER V MAINTENANCE MODE ...
Page 89: ...V 7 Scanning Compensation Data List 200 dpi ...
Page 133: ...CHAPTER VI ERROR INDICATION AND TROUBLESHOOTING ...
Page 163: ...MAIN 8 8 FAX3550 3650 8000P 8200P MFC4550 6550MC 7550MC MFC9000 9500 A ...
Page 185: ...D CONTROL PANEL 1 2 ...
Page 187: ...E POWER SUPPLY 120 V Low voltage power supply ...
Page 188: ...E POWER SUPPLY 200 240 V Low voltage power supply European versions ...
Page 189: ...E POWER SUPPLY 200 240 V Low voltage power supply Asian versions ...
Page 190: ...E POWER SUPPLY High voltage power supply ...
Page 191: ...Sept 98 5X52012 Printed in Japan ...