Brother HL-4140CN Service Manual page 211

(7) Disconnect the Connector (CN8) and two Flat cables from the Laser unit to remove the
Laser unit from the Base frame unit.
Note:
After disconnecting flat cables, check that each cable is not damaged at its end or
shortcircuited.
Laser unit-Engine
flat cable
Laser unit-Main flat cable
Assembling Note:
- When connecting flat cables, do not insert them at an angle. After insertion, check that
the cables are not at an angle.
- When the flat cables of the Laser unit are replaced, be sure to fold and assemble the Flat
cable as shown in the figure.
<Laser unit-Engine flat cable>
10
80
<Laser unit-Main flat cable>
10 40
30
Harness routing: Refer to
Laser unit
7a
7a
Fig. 3-70
90
95
55
45°
Fig. 3-71
" Laser Unit"
3-63
7b
Connector
Fold down FFC along with the solid line
Fold up FFC along with the dotted line
133 163
43 30
45°
137
42 45
45°
Base frame unit
<Front>
(mm)
175 215
12 40
182 215
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