HP Book 900 manual Required Equipment, Recommended Screw Torques, Screw Thread Size M1.4

Notes

Reassembly steps are the reverse of the removal steps. Reassembly notes are included at the end of each section below.

Symbols like this throughout this chapter show approximate full-size screw outlines. You can use them to verify the sizes of screws before you install them. Installing a wrong-size screw can damage the unit. (The symbol at the left represents an M2.5×5mm T-head screw.)

Table 2-2. Required Equipment

∙Small Phillips screwdriver (#1), preferably magnetized.

∙Fine Phillips screwdriver (#0).

∙4-mm thin-wall hex driver (or 5/32 inch).

∙Small plastic blade for prying, such as an angled plastic tweezers.

∙Pointed knife or probe.

∙Small flat-blade screwdriver.

∙4.0-4.5 mm flat-blade screwdriver.

∙IC (PLCC) removal tool (similar to OK Industries EX-5).

Table 2-3. Recommended Screw Torques

Screw Thread Size

M1.4

M2

M2.5 (4–5 mm long)

except those in next line

Torque (kgf•cm)

0.9– 1.2

1.5– 2.0

3.0– 3.5

Torque (lbf•in)

0.8– 1.0

1.3– 1.7

2.6– 3.0

M2.5 (4–5 mm long)

for HDD case, PCMCIA socket

2.0 – 2.5

1.7 – 2.2

M2.5 (8 mm long)

M3

except those in next line

3.5– 4.0

4.0– 4.5

3.0– 3.4

3.4– 3.9

M3

for HDD case

2.0 – 2.5

1.7 – 2.2

2-2 Removal and Replacement HP OmniBook 900