Dell D7523QTc Service Manual page 19

S3 Assembly the
BKT
S4. Assembly the
Main board，
Power board ,OPS
board, Converter
board,etc
Use a hexagonal
screwdriver to remove
5S screws.
(No.1~4 screw
size=M3x4
Torque=4±1kgf.cm )
(No.5 screw size=M4x6
Torque=4±1kgf.cm )
Use a hexagonal
screwdriver to screw 7
screws.
(No.1~2 hex screw;
size=M3x8
Torque=4±1kgf.cm)
(No.3~5 hex screw;
size=M3x5
Torque=4±1kgf.cm)
(No.6~7 screw;
Torque=4.5±0.5kgf.cm )
Use a Philips-head
screwdriver to screw 29
screws for tighten the
Main board，Power
board ,OPS board,
Converter board,etc
(No.1~23 screw
size=M3x8
Torque= 4±1kgf.cm)
(No.24~28 screw
size=M4x6
Torque= 6±1kgf.cm)
(No.29 screw size=M4x6
Torque= 6±1kgf.cm)
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