Acer Aspire 5942 Service Guide

Chapter 239
Using the ICW50/ICY70 LAN MAC Utility
You can use the MAC.BAT utility to write the MAC.CFG file to the EEPROM under DOS mode.
1.Use a text editor (for example: Notepad) to open the MAC.CFG file. You can see the MAC.CFG contents 
as below:
2.In DOS mode, run the MAC.BAT file to write MAC values to eeprom. WriteData = ‘001122334455 MAC value
StartAddr=7A MAC address
WriteLeng=6 MAC value length
KeepByte=0 don’t care 

40Chapter 2 

Chapter 341
Machine Disassembly and Replacement
IMPORTANT: The outside housing and color may vary from the mass produced model.
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
•Plastic flat screwdriver
•Plastic tweezers
NOTE:...

42Chapter 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...

Chapter 343
External Module Disassembly Process
IMPORTANT: The outside housing and color may vary from the mass produced model.
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.
NOTE: Items enclosed with...

44Chapter 3
Removing the Battery Pack
1.Turn the computer over. 
2.Slide the battery lock to the unlocked position.
3.Slide and hold the battery release latch to the release position (1), then lift out the battery pack from the main 
unit (2).
12 

Chapter 345
Removing the Express Dummy Card
1.Push the Express dummy card all the way in to eject it.
2.Pull the card out from the slot. 

46Chapter 3
Removing the SD Dummy Card
1.Push the SD dummy card all the way in to eject it.
2.Pull the card out from the slot. 

Chapter 347
Removing the Lower Covers
1.See “Removing the Battery Pack” on page 44.
2.Loosen the four captive screws in the Memory/HDD and WLAN covers.
   
3.Carefully open the Memory/HDD cover. 
4.Carefully open the WLAN cover. 
Memory/
HDD 
Cover WLAN 
Cover 

48Chapter 3
Removing the Optical Drive Module
1.See “Removing the Lower Covers” on page 47.
2.Remove the single screw securing the ODD module.
3.Insert a suitable object in to the Lower Cover to push the ODD Module clear of the casing.
4.Pull the ODD Module out of the chassis.
StepSizeQuantityScrew Type
ODD Module M2.5*5 1