Document Scanner - Brother MFC8440D Service Manual

7/13/2019
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY
3.8

Document Scanner

NOTE:
The disassembly job of the scanner unit should be done in a clean room to prevent dust or dirt
from getting into the scanner unit.
(1) Disconnect the FFC cable.
(2) Remove the two cup B M3x10 Taptite screws, and then remove the driver PCB shield.
(3) Disconnect the two connectors.
Driver PCB ASSY
Driver PCB shield
Taptite, cup B
M3x10
(4) Remove the two bind B M4x20 Taptite screws, and then remove the scanner unit.
Taptite, bind B M4x20
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Brother 8840D Service Manual
Fig. 4-47
1
2
Fig. 4-48
4-28
Document scanner
Scanning motor
FB harness
Driver PCB shield
FFC cable
Photo interrupter harness
Main PCB
Document scanner
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