Brother International IntelliFax-3550 Service Manual - Page 78
Cleaning of High-voltage Contacts and Grounding Contacts, High-voltage Contacts
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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. Grounding Contacts High-voltage Contacts 2 1 3 For transfer roller Gear drive unit Drum grounding board 2 1 2 Drum unit 4 For cleaner roller 5 For grid 7 For developer roller 6 For corona wire High-voltage power supply PCB 3 4 1 IV - 28 7 6 5 4 3 5 7 6
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