Brother MFC-7450

3-3
Confidential
3. SCREW TORQUE LIST
Location of screw Screw type Q’ty
Tightening torque
N m (kgf · cm)
JOINT COVER SUB CHUTE ASSY Taptite bind B M4x12 2 0.8±0.1 (8±1)
INNER CHUTE ASSY Taptite bind B M4x12 2 0.6±0.1 (6±1)
FUSER UNIT Taptite pan B M4x14 2 0.8±0.1 (8±1)
CONER COVER /
SIDE COVER L ASSY
Taptite bind B M4x12 3 0.8±0.1 (8±1)
SIDE COVER SUB L Taptite bind B M4x12 1 0.8±0.1 (8±1)
MAIN SHIELD COVER PLATE Taptite cup S M3x6 SR 1 0.9±0.05 (9±0.5)
FG are tightened together Taptite cup S M3x6 SR 2
0.55 ± 0.05 (5.5 ± 0.5)
ADF UNIT Taptite bind B M4x12 1 0.8±0.1 (8±1)
HINGE ARM Taptite bind B M4x12 1 0.8±0.1 (8±1)
HINGE ASSY L Taptite cup S M3x12 1 0.8±0.1 (8±1)
Taptite cup B M3x10 2 0.5±0.1 (5±1)
UPPER DOCUMENT CHUTE ASSY Taptite cup B M3x10 4 0.5±0.1 (5±1)
LOWER DOCUMENT CHUTE ASSY Taptite cup B M3x10 2 0.5±0.1 (5±1)
DRIVE FRAME ASSY Taptite cup B M3x10 2 0.5±0.1 (5±1)
ADF harness unit (FG) Taptite cup S M3x6 SR 1 0.8±0.1 (8±1)
ADF MOTOR Taptite bind B M3x6 1 0.8±0.1 (8±1)
DOCUMENT DRESS COVER Taptite cup B M3x8 1 0.5±0.1 (5±1)
CORD HOOK Taptite cup B M3x8 2 0.5±0.1 (5±1)
PANEL UNIT Taptite cup B M3x10 4 0.5±0.1 (5±1)
PRINTED PANEL COVER Taptite cup B M3x8 4 0.4±0.1 (4±1)
NCU SHIELD Taptite bind B M4x12 2 0.8±0.1 (8±1)
Screw pan (S/P washer)
M3.5x6
10.5±0.05 (5±0.5)
NCU PCB Taptite cup S M3x6 SR 2 0.5±0.1 (5±1)
SPEARKER COVER Taptite bind B M4x12 1 0.8±0.1 (8±1)
SIDE COVER R ASSY Taptite bind B M4x12 2 0.8±0.1 (8±1)
MAIN PCB ASSY Taptite cup S M3x6 SR 4 0.6±0.1 (6±1)
JOINT COVER ASSY Taptite bind B M4x12 5 0.8±0.1 (8±1)
HIGH-VOLTAGE PS PCB ASSY Taptite cup S M3x6 SR 2 0.8±0.05 (8±0.5)
Taptite bind B M4x12 2 0.8±0.05 (8±0.5)
LASER
UNIT
Left side of Main frame
and back of the right side.
Taptite cup S M3x6 SR 3 0.8±0.05 (8±0.5)
Front of the right side of
Main frame
Taptite pan (S/P washer) S
M3x8
10.8±0.05 (8±0.5)
AIR DUCT Taptite cup S M3x6 SR 2 0.9±0.05 (9±0.5)
LV SHIELD PLATE COVER Screw pan (S/P washer)
M3.5x6
10.5±0.05 (5±0.5)
Taptite cup S M3x6 SR 2 0.5±0.05 (5±0.5)
SW HOLDER Taptite bind B M4x12 1 0.8±0.1 (8±1)