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Acer Aspire X1420G Acer Aspire X1400 and X1420 Desktop Series Service Guide - Page 51

Removing the Mainboard

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Removing the Mainboard 1. Remove the four screws that secure the mainboard to the chassis. Note:Circuit boards >10 cm2 has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal. Aspire AX1400 Service Guide 43

Section	Page
Aspire AX1400 Desktop Computer Service Guide	1
System Features	9
Audio	10
I/O Ports and LED Indicators	10
Physical Specifications	11
Environmental Requirements	11
System Tour	12
Front View	12
Rear View	13
CMOS Setup Utility	15
Accessing the Setup Utility	16
Navigating through the Setup Utility	17
Setup Utility Menus	17
Disassembly Tools	31
Pre-disassembly Procedure	31
Disassembly Procedures	32
Removing the Side Panel	32
Removing the Front Bezel	33
Removing the HDD-ODD Bracket	36
Removing the Front Bezel	41
Removing the Expansion Boards	42
Removing the Memory Modules	44
Removing the Power Supply Unit	44
Removing the Front I/O and Optional Card Reader Assemblies	46
Removing the Mainboard	51
Hardware Diagnostic Procedure	53
System Check Procedures	53
Checkpoints	54
POST Error Indicators	58
BIOS Recovery	69
BIOS Update	70
Updating the BIOS in DOS Mode	70
Updating the BIOS in Windows Mode	71
Clearing CMOS	74
Block Diagram	75
The core subsystems of the Aspire AX1400 computer are depicted in the following block diagram.	75
Mainboard Layout	76
Jumper Setting	77
Internal header pin definition	78
Connecting Optional Devices	80
Connecting Case Components	82
Exploded Diagram	85
Aspire AX1400 FRU List	86
Technical Specifications	96
Processor	96
Chipsets	96
BIOS	96
Memory	97
Hard Disk Drive	97
Optical Disc Drive	98
Card Reader (optional)	98
Gigabit Ethernet	98
Audio	98
Power Supply Unit	99
Power Management	99

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