Acer Aspire 4930 4930G Series User Manual

							Chapter 251
BIOS Flash Utility
The BIOS flash memory update is required for the following conditions:
•New versions of system programs
•New features or options
•Restore a BIOS when it becomes corrupted. 
Use the Phlash utility to update the system BIOS flash ROM.
NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery 
Diskette before you use the Phlash utility.
NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash.
NOTE: Please use the AC adaptor power supply when you run the Phlash utility. If the battery pack does not 
contain enough power to finish BIOS flash, you may not boot the system because the BIOS is not 
completely loaded. 
Fellow the steps below to run the Phlash.
1.Prepare a bootable diskette.
2.Copy the flash utilities to the bootable diskette.
3.Then boot the system from the bootable diskette. The flash utility has auto-execution function. 
						

							52Chapter 2
Remove HDD/BIOS Utility
This section provide you with removing HDD/BIOS method:
Remove HDD Password:
•If you key in wrong HDD password for three time, “HDD password error code” would display on the 
screen. See the image below.
•If you need to solve HDD password locked problem, you can run HDD_PW.EXE
1.
Key in “hdd_pw 15494 0”
2.Select “2”
3.Choose one upper-case string
•Reboot system and key in “0KJFN42” or “UVEIQ96” to HDD user password. 
						

							Chapter 253 
						

							54Chapter 2
Remove BIOS Password:
•If you key in wrong Supervisor Password for three time, “System Disabled” would display on the 
screen. See the image below.
•If you need to solve BIOS password locked problem, you can run BIOS_PW.EXE
1.
Key in “bios_pw 14452 0”
2.Choose one upper-case string
•Reboot the system and key in “qjjg9vy” or “07yqmjd” to BIOS user password. 
						

							Chapter 255 
						

							56Chapter 2 
						

							Chapter 357
Machine Disassembly and Replacement
This chapter contains step-by-step procedures on how to disassemble the notebook computer for 
maintenance and troubleshooting.
Disassembly Requirements
To disassemble the computer, you need the following tools:
•Wrist grounding strap and conductive mat for preventing electrostatic discharge
•Flat screwdriver
•Philips screwdriver
•Hex screwdriver
•Plastic flat screwdriver
•Plastic tweezers
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.
Chapter 3 
						

							58Chapter 3
General Information
Pre-disassembly Instructions
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.
Disassembly Process
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 
ScrewQuantityPart Number
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 
						

							Chapter 359
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.
Screw List
ItemScrewColorPart No. 
						

							60Chapter 3
Removing the Battery Pack
1.Turn computer over. 
2.Slide the battery lock/unlock latch to the unlock position. 
3.Slide and hold the battery release latch to the release position (1), then slide out the battery pack from the 
main unit (2).