Page 51 from 182
Removing BIOS Passwords:
If you key in wrong Supervisor Password three time, “System Disabled” displays on the screen. See the image
To clear the password, perform the following steps:
1.From a DOS prompt, Execute clnpwd.exe
2.Press 1 or 2 to clean the desired password shown on the screen.
The onscreen message determines whether the function is successful or not.
Page 52 from 182
Page 53 from 182
Machine Disassembly and Replacement
This chapter contains step-by-step procedures on how to disassemble the notebook computer for
maintenance and troubleshooting.
To disassemble the computer, you need the following tools:
•Wrist grounding strap and conductive mat for preventing electrostatic discharge
•Plastic flat screwdriver
NOTE: The screws for the different components vary in size. During the disassembly process, group the
screws with the corresponding components to avoid mismatch when putting back the components.
Page 54 from 182
Before proceeding with the disassembly procedure, make sure that you do the following:
1.Turn off the power to the system and all peripherals.
2.Unplug the AC adapter and all power and signal cables from the system.
3.Place the system on a flat, stable surface.
4.Remove the battery pack.
The disassembly process is divided into the following stages:
•External module disassembly
•Main unit disassembly
•LCD module disassembly
The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence.
Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you
want to remove the main board, you must first remove the keyboard, then disassemble the inside assembly
frame in that order.
Main Screw List
M2.5*8 (NL) 15 MA000005YG0
M2.5*5 (NL) 22 MA000007YG0
M2.5*3 (NL) 2 MA000005WG0
M2*3 (NL) 36 MA0000060G0
M2.5*4 (NL) 2 MA0000005G0
M2*6 (NL) 4 MMCK20060G0
M2*4-NI (NL) 5 MACK20040G0
M3*3 (NL) 4 MAAA03032G0
M2*6.5 4 MA0000096G0
M2.5*5.0 2 MA000002NG0
M2.5*6.5 4 MA000006C00
Page 55 from 182
External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you
on the components that need to be removed during servicing. For example, if you want to remove the main
board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
WLAN Module M2*3 (NL) 2 Black MA0000060G0
HDD Carrier M3*3 (NL) 4 Silver MAAA03032G0
ODD Module M2.5*3(NL) 1 Black MA000002NG0
ODD Bracket M2*3 (NL) 3 Black MA0000060G0