Laser Unit - Brother HL-5440D Service Manual

9.15 Laser unit

(1) Disconnect the laser unit flat cable from the laser unit.
(2) Remove the four taptite cup S M3x8 SR screws, and remove the laser unit from the
machine.
Note:
• Be careful not to touch the lens of the laser unit.
Laser unit flat cable
Harness routing: Refer to
Assembling Note:
• When attaching the laser unit, tighten the screws in the following order: upper right,
lower right, lower left and upper left.
• When connecting the flat cable(s), insert it straight. After insertion, check that the cable
is not at an angle.
• After replacing the laser unit, attach the laser serial number label of the new laser unit
on the scanner plate as shown in the illustration above.
Taptite cup S M3x8 SR
4
3
Fig. 3-36
"1.Main PCB ASSY"
3-36
Taptite cup S M3x8 SR
Laser serial number label
1
2
and "6.Laser unit".
Laser unit
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