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Acer Aspire X1935 Acer Aspire X1935 Desktop Service Guide - Page 25

Miscellaneous, Parameter, Description, Option, Disabled

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Miscellaneous Parameter AHCI Port0/1/2 Bootup Num-lock Description Displays the status of auto detection of the AHCI device. Selects power on state for Num Lock. USB Beep Message Enables or disables BIOS to display error beeps or messages during USB device enumeration. Option On Off Enabled Disabled Chapter 2 17

Section	Page
Aspire X1935 Service Guide	1
Revision History	2
Copyright	3
Disclaimer	4
Conventions	5
Table of Contents	7
System Tour	9
Features	9
Block Diagram	13
System Components	14
Front Panel	14
Rear Panel	15
Hardware Specifications and Configurations	16
Power Management Function(ACPI support function)	20
System Utilities	21
CMOS Setup Utility	21
Entering CMOS setup	22
Navigating Through the Setup Utility	22
Setup Utility Menus	23
Main	23
Advanced	24
Power	29
Security	30
Boot Options	31
Exit	32
System Disassembly and Assembly	33
Disassembly Requirements	33
Pre-disassembly Procedure	34
Removing the Side Panel	35
Removing the Front Bezel	36
Removing the Heat Sink Fan Assembly	37
Removing the Processor	39
Removing the HDD-ODD Bracket	41
Removing the Optical Drive and the Hard Disk Drive	42
Detaching the Front Bezel	46
Removing the Memory Modules	47
Removing the Power Supply	48
Removing the Front I/O and Optional Card Reader Assembly	50
Removing the Mainboard	53
Assembly Requirements	55
Assembly Procedure	56
Removing the Side Panel	57
Removing the Front Bezel	58
Removing the HDD-ODD Bracket	59
Reinstalling the I/O Shielding	60
Reinstalling the Main Board	61
Reinstalling the Power Supply	63
Reinnstalling the Memory	65
Reinstalling the Front Bezel Power Button/LED Cable	66
Reinstalling the Optical Drive and the Hard Disk Drive	67
Reinstalling the HDD-ODD Bracket	71
Reinstalling the Processor	72
Reinstalling the Heat Sink Fan Assembly	74
Reinstalling the Front Bezel	76
Reinstalling the Side Panel	77
System Troubleshooting	79
Hardware Diagnostic Procedure	79
System Check Procedures	80
Power System Check	80
System External Inspection	80
System Internal Inspection	80
Beep Codes	81
Checkpoints	82
Viewing BIOS checkpoints	82
Bootblock Initialization Code Checkpoints	82
Bootblock Recovery Code Checkpoints	84
BIOS Recovery	85
Jumper and Connector Information	86
M/B Placement	86
Jumper Setting	88
Internal Header Pin Definition	89
Connector Pin Definition	92
FRU (Field Replaceable Unit) List	95
Aspire X1935 Exploded Diagram	96

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