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4 Replacement Procedures
NB250/NB255 Maintenance Manual 4-ii
Chapter 4 Contents
4.1 General ................................................................................................................... 4-1
Safety Precautions.......................................................................................... 4-2
Before You Begin........................................................................................... 4-4
Disassembly Procedures................................................................................. 4-5
Assembly Procedures ..................................................................................... 4-5
Tools and Equipment ..................................................................................... 4-6
Screw Tightening Torque............................................................................... 4-6
Colors of Screw Shanks ................................................................................. 4-7
Symbols of Screws on the Laptop Body ........................................................ 4-7
Symbol examples ........................................................................................... 4-7
4.2 Battery .................................................................................................................... 4-8
Removing the Battery Pack............................................................................ 4-8
Installing the Battery Pack ............................................................................. 4-9
4.3 HDD ..................................................................................................................... 4-10
Removing the HDD...................................................................................... 4-10
Installing the HDD ....................................................................................... 4-12
4.4 Memory ................................................................................................................ 4-13
Removing the Optional Memory.................................................................. 4-13
Installing the Optional Memory ...................................................................4-14
4.5 WLAN Card ......................................................................................................... 4-15
Removing the WLAN Card.......................................................................... 4-15
Installing the WLAN Card ........................................................................... 4-16
4.6 Hinge Cover and Keyboard.................................................................................. 4-17
Removing the Hinge Cover.......................................................................... 4-18
Removing the Keyboard............................................................................... 4-19
Installing the Hinge Cover and Keyboard.................................................... 4-20
4.7 Power Board......................................................................................................... 4-21
Removing the Power Board ......................................................................... 4-21