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Brother T-8420B
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CHAPTER 3
THEORY O
F OPERATION
3-20
2.4.7
Document f
ront sensor /Do
cument rear sensor
Fig. 3-30
2.4.8
DX-sensor PCB ASSY
Fig. 3-31
Docum
ent front s
ensor
Docum
ent rear sensor
DX
-sensor PCB ASSY
1
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