Toshiba 50CT User Guide - Page 136

Tools and Equipment, Screw Tightening Torques, Thin-head M2.5

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4 Replacement Procedures 4.1 Overview Tools and Equipment The use of Electrostatic Discharge (ESD) equipment is very important for your safety and the safety of those around you. Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts. The following equipment is necessary to disassemble and reassemble the computer: q One M2 Phillips screwdriver to remove and replace screws. q Tweezers, to lift out screws that you cannot grasp with your fingers. q ESD mats for the floor and the table you are working on. q An ESD wrist strap or heel grounder. q Antistatic carpeting or flooring. q Air ionizers in highly static sensitive areas. q Plastic card the size of a credit card. Screw Tightening Torques When you fasten screws, be sure to follow the torque list below. Overtightening can damage components and screws; undertightening can result in electrical shorts or other damage if screws or components come loose. q M2 0.22 N•m (2.2 kgf•cm) q M2.5 0.36 N•m (3.5 kgf•cm) q FDD (External) 0.22 N•m (2.2 kgf•cm) q HDD 0.3 N•m (3.1 kgf•cm) or less q M3 0.49 N•m (5.0 kgf cm) q Thin-head M2.5 0.22 N•m (2.2 kgf.cm) Libretto 50CT/70CT Maintenance Manual 4-5

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4 Replacement Procedures
4.1
Overview
Libretto 50CT/70CT Maintenance Manual
4-5
Tools and Equipment
The use of Electrostatic Discharge (ESD) equipment is very important for your safety and the
safety of those around you. Proper use of these devices will increase the success rate of your
repairs and lower the cost for damaged or destroyed parts. The following equipment is
necessary to disassemble and reassemble the computer:
q
One M2 Phillips screwdriver to remove and replace screws.
q
Tweezers, to lift out screws that you cannot grasp with your fingers.
q
ESD mats for the floor and the table you are working on.
q
An ESD wrist strap or heel grounder.
q
Antistatic carpeting or flooring.
q
Air ionizers in highly static sensitive areas.
q
Plastic card the size of a credit card.
Screw Tightening Torques
When you fasten screws, be sure to follow the torque list below. Overtightening can damage
components and screws; undertightening can result in electrical shorts or other damage if
screws or components come loose.
q
M2
0.22 N•m (2.2 kgf•cm)
q
M2.5
0.36 N•m (3.5 kgf•cm)
q
FDD (External)
0.22 N•m (2.2 kgf•cm)
q
HDD
0.3
N•m (3.1 kgf•cm) or less
q
M3
0.49 N•m (5.0 kgf cm)
q
Thin-head M2.5
0.22 N•m (2.2 kgf.cm)