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Brother Facsimile Equipment MFC7420 User Manual

Page 121

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< MFC7820N >

(1) Disconnect the thirteen connectors from the main PCB.

(2) Remove the five cup S M3x6 taptite screws and FG harness ASSY 6.

(3) Remove the two flat S M3x8 taptite screws.

(4) Remove the main PCB from main frame L.

NOTE: When replacing the main PCB, refer to

‘ADJUSTMENTS AND UPDATING OF

SETTINGS, REQUIRED AFTER PARTS REPLACEMENT’ in Chapter 6

.

HVPS connector
(It has been taken back.)

Main PCB

Taptite flat S M3x8

Taptite cup S M3x6

Taptite cup S M3x6

FG harness ASSY 6

Main frame L

1

2

Polygon motor connector
(LV harness ASSY)

New toner sensor connector

LD harness 5P

Main PCB

Speaker connector

NCU connector

Cover sensor connector

LVPS connector

Fan motor 60 unit connector

Thermistor relay harness

Main motor connector

Battery connector

Control panel