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Acer Aspire 6920 Acer Aspire 6920 / 6920G Notebook Service Guide - Page 82

Check the Power Adapter, An audible noise from the power adapter does not always indicate a defect. - power cord

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Check the Power Adapter Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power adapter cable. See the following figure Pin 1: +19 to +20.5V Pin 2: 0V, Ground 1. If the voltage is not correct, replace the power adapter. 2. If the voltage is within the range, do the following: Replace the System board. If the problem is not corrected, see "Undetermined Problems" on page 96. If the voltage is not correct, go to the next step. NOTE: An audible noise from the power adapter does not always indicate a defect. 3. If the power-on indicator does not light up, check the power cord of the power adapter for correct continuity and installation. 4. If the operational charge does not work, see "Check the Battery Pack" on page 83. 82 Chapter 4

Section	Page
Features	7
Platform and memroy	7
Display and graphics	7
TV-tuner	7
Audio	7
Storage subsystem	8
Input devices	8
Communication	8
I/O Ports	8
Environment	9
System Block Diagram	10
Board Layout	11
Your Acer Notebook tour	13
Closed Front View	14
Left View	15
Right View	16
Base view	18
Indicators	19
Easy-Launch Buttons	19
Touchpad Basics	20
Move your finger across the touchpad (2) to move the cursor.	21
Using the Keyboard	22
Lock Keys and embedded numeric keypad	22
Windows Keys	23
Hot Keys	23
Special Key	24
Acer Empowering Technology	26
Acer eAudio Management	27
Acer ePower Management	28
Acer eDataSecurity Management	29
(for selected models)	29
Using the System Utilities	35
Acer GridVista (dual-display compatible)	35
Launch Manager	36
Hardware Specifications and Configurations	37
Video Memory	42
BIOS Setup Utility	47
Invoking BIOS Setup	48
Information	49
Main	51
Advanced	53
Security	54
Boot	58
Exit	59
BIOS Flash Utility	60
Remove HDD password Utility	61
1. Key in “unlock6 error code 205”	61
2. Select “2”	61
3. Choose one HDD password	61
General Information	64
Before You Begin	64
Disassembly Procedure Flowchart	65
Removing the Battery Pack	67
Removing the HDD/Memory Module/Wireless LAN Card/TV Tuner Card/ System Fan/Thermal Modules/CPU	68
Removing the HDD	68
Removing the Wireless Cover & RAM Module	68
Removing the Wireless LAN Card/TV Tunder Card and System Fan	68
Removing the Thermal Modules and the CPU	70
Removing the ODD and Dummy cards	71
Removing the Hinge cover	71
Removing the BTCB screws	72
Disassembling the Main Unit	73
Disassembling the LED boards	74
Remove I/O baord and Main Board.	75
Disassembly LCM module	76
Disassembling the External Modules	78
Disassembling the HDD Module	78
Disassembling the ODD Module	78
System Check Procedures	80
External Diskette Drive Check	80
External CD-ROM Drive Check	80
Keyboard or Auxiliary Input Device Check	80
Memory check	81
Power System Check	81
Touchpad Check	83
Power-On Self-Test (POST) Error Message	84
Index of Error Messages	85
Phoenix BIOS Beep Codes	88
Index of Symptom-to-FRU Error Message	92
Intermittent Problems	95
Undetermined Problems	96
Bottom View	98
Aspire6920 Exploded Diagram	102

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