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Acer Aspire 1800 Aspire 1800 Service Guide - Page 35

Features, Abnormal input 22~29Vdc without safety issues

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Features 1. Input voltage is wide range 10Vdc~20Vdc 2. Brightness adjustment by PWM burst mode 3. Automatic brightness compensation for input voltage variation 4. Output over voltage protection 5. Output shorted circuit protection 6. Abnormal input (22~29Vdc) without safety issues Chapter 1 27

Section	Page
Aspire 1800 Service Guide	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
T.O.C	7
AS 1800_CH1.pdf	9
System Specifications	9
Mainboard Placement	13
Top View	13
Rear View	13
Outlook View	15
Open View	15
Front Panel	16
Left View	17
Right View	18
Rear View	19
Bottom View	20
Indicators	21
Keyboard	23
Special keys	23
Touchpad	27
Touchpad Basics	27
Launch Keys	29
Hardware Specifications and Configurations	30
AS 1800_CH2.pdf	43
System Utilities	43
Information	44
Main	45
Advanced	46
FIR Ports	46
Security	47
Boot	49
Exit	50
AS 1800_CH3.pdf	51
General Information	52
Before You Begin	52
Aspire 1800 Disassembly Procedure	53
Disassemble the Battery and HDD	53
Disassemble the Wireless	53
Disassemble the Modem Card	54
Disassemble the RAM and ODD	54
Disassemble the Keyboard	55
Disassemble the Panel Module	55
Disassemble the Bluetooth and Cables	56
Disassemble Case, Touchpad and CD-Player	56
Disassemble the Card Reader	57
Disassemble the Speaker	57
Disassemble the System FAN and Mainboard	58
Disassemble the LCD Module	58
AS 1800_CH4.pdf	60
Troubleshooting	60
System Check Procedures	61
External Diskette Drive Check	61
External CD-ROM/DVD-ROM Drive Check	61
Keyboard or Auxiliary Input Device Check	62
Memory Check	62
Power System Check	62
Touchpad Check	64
Display Check	64
Sound Check	65
PhoenixBIOS POST Tasks and Beep Codes	66
Terminal POST Errors	67
POST Task Routines	68
AS 1800_CH5.pdf	72
Jumper and Connector Locations	72
Card Reader Board	72
Top View	72
Rear View	73
Touch Pad Board	74
Top View	74
Rear View	74
Clear CMOS	75
AS 1800_CH6.pdf	76
Exploded Diagram	77
Aspire 1800 Parts	79
AS 1800_AppA.pdf	91
Model Definition and Configuration	91
Aspire 1800 series	91
AS 1800_AppB.pdf	92
Test Compatible Components	92
Microsoft Windows XP / Professional Environment Test	93
AS 1800_AppC.pdf	96

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