Toshiba QOSMIO G40 Maintenance Manual page 244

4 Replacement Procedures
Screw Tightening Torque
Use the following torque when tightening screws.
CAUTION: Overtightening may damage screws or parts. Undertightening may allow
NOTE: To tighten screws quickly and accurately, an electric screwdriver is
•
M2 (2mm)
•
M2.5 (2.5mm)
•
M3.0 (3mm)
NOTE: To prevent damage to THIN HEAD screws, use type 0 bit philips screwdriver.
Use, however, the PH point size "1" screwdriver for screws fixing the memory
slot cover and keyboard. Press along the axis of the screwdriver while turning
the screw. This is because the contact area between the screw and driver is less
than for a pan head screw (standard pan-shaped screw head).
Grip Color
Some screws have a colored grip area to help you determine the length of the screw.
•
Even numbered length screws: Brown
•
Odd numbered length screws: White
•
Special length screw: Blue
"Special length screw" means screws whose length is indicated in an integral number to the
first decimal places such as 2.5 mm, 2.8 mm and so on.
4-6
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screws to loosen (and possibly fall out) causing a short circuit or other
damage.
recommended.
0.167 N·m (1.7 kgf·cm)
0.294 N·m(3.0 kgf·cm)
0.549 N·m (5.6 kgf·cm)
[CONFIDENTIAL]
Grip area
QOSMIO G40 Maintenance Manual (960-632)
4.1 Overview