Acer Aspire 7250

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3-18

Removing Main screws on bottom

case 0

1. Remove 26(M2.5*6) screws on bottom case.

Figure 3-22. MAIN SCREWS

Main Page

Hardware Specifications and Configurations1
Operating System1
Storage Subsystem2
Audio Subsystem2
Optical Media Drive2
Wireless and Networking2
Privacy Control3
Dimensions and Weight3
Power Adapter and Battery3
Special Keys and Controls3
Optional Items5
Top View7
Notebook Tour7
Left View9
Right View10
Base View11
Touchpad Basics12
Using the Keyboard13
Lock Keys14
Windows Keys15
System Block Diagram19
Specification Tables20
Computer Specifications20
System Board Major Chips21
Processor Specifications21
CPU Fan True Value Table22
System Memory22
Memory Configuration22
Graphics Controller23
Video Interface23
LAN Interface24
Hard Disk Drive25
Super-Multi Drive Interface26
Specification26
Display Supported Resolution (LCD Supported Resolution)27
Display Supported Resolution (GPU Supported Resolution)28
Display Supported Resolution (LCD Panel Supported Resolution)28
Audio Codec and Amplifier29
Audio Interface30
Wireless Module 802.11B/G/N31
System Power Management32
Usb Port32
Hdmi Port32
Card Reader33
System LED Indicator33
System DMA Specification33
System Interrupt Specification34
System Function34
System IO Address Map35
System Utilities37
Bios Setup Utility37
Navigating the BIOS Utility37
Setting a Password43
Removing a Password43
Changing a Password44
BIOS Flash Utilities48
DOS Flash Utility49
Winflash Utility51
Remove HDD Password Utilities52
Removing BIOS Passwords54
Cleaning BIOS Passwords55
Machine Disassembly and Replacement65
Recommended Equipment65
Replacement Requirements65
Disassembly Process67
Main Screw List67
External Module Disassembly Process68
External Modules Disassembly Flowchart68
Removing the Battery Pack69
Removing the HDD Module70
Removing the WLAN Module73
Removing the ODD Module75
Removing the Memory Module76
Main Unit Disassembly Process79
Main Unit Disassembly Flowchart79
Removing the Keyboard80
Removing the TOP CASE Module82
LCD Module Disassembly Process94
LCD Reassembly Procedure100
Replacing the LCD PANEL Module100
Main Unit Reassembly Process106
Replacing the Mainboard107
Replacing Memory Module118
Replacing the WLAN Module120
Replacing HDD Module122
General Information127
Troubleshooting127
Power on Issues128
Computer Shuts down Intermittently128
No Display Issues129
No POST or Video129
Abnormal Video130
LCD Failure131
Keyboard Failure132
Touchpad Failure133
Internal & External Speaker Failure134
Sound Problems134
Microphone Failure136
USB Failure137
WLAN Failure138
Card Reader Failure139
Thermal Unit Failure140
HDMI and CRT Failure141
CD-ROM/DVD Failure142
Other Functions Failure143
Intermittent Problems143
Undetermined Problems143
POST Code Range144
Post Codes144
Jumper and Connector Locations153
Clearing Password Check and BIOS Recovery157
Steps for Clearing BIOS Password Check157
Clear CMOS Jumper158
Bios Recovery Boot Block159
BIOS Recovery Hotkey159
BIOS Recovery from USB Storage159
FRU (Field Replaceable Unit) List161
Model Definition and Configuration187
Test Compatible Components207
Microsoft Windows208
Environment Test208
Online Support Information223

Acer Aspire 7250 - Page 78

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