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Acer TravelMate 4400 TravelMate 4400 Service Guide - Page 71

Power System Check, If you suspect a power problem

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Power System Check To verify the symptom of the problem, power on the computer using each of the following power sources: 1. Remove the battery pack. 2. Connect the power adapter and check that power is supplied. 3. Disconnect the power adapter and install the charged battery pack; then check that power is supplied by the battery pack. If you suspect a power problem, see the appropriate power supply check in the following list: T "Check the Battery Pack" on page 66 Chapter 4 65

Section	Page
Chapter One	7
Features	7
System Block Diagram	9
Board Layout	10
Top View	10
Bottom View	11
A TravelMate tour	13
Front View	13
Closed Front View	14
Left View	15
Right View	16
Rear Panel	17
Bottom Panel	18
Indicators	19
Launch Keys	20
Touchpad	21
Touchpad Basics	21
Using the Keyboard	23
Lock Keys and embedded mumeric keypad	23
Windows Keys	24
Hot Keys	25
Special Key	27
Hardware Specifications and Configurations	28
Chapter Two	37
BIOS Setup Utility	37
Navigating the BIOS Utility	38
Information	39
Main	40
Advanced	42
Security	44
Boot	48
Exit	49
BIOS Flash Utility	50
Chapter Three	52
General Information	52
Before You Begin	52
Disassembly Procedure Flowchart	54
Removing the Battery Pack	56
Removing the HDD Module/the Memory and the Wireless LAN Card/the Thermal Module and the CPU/ODD M...	57
Removing the HDD Module	57
Removing the Memory and the Wireless LAN Card	57
Removing the Thermal Module and CPU	57
Removing the ODD Module	59
Removing the LCD Module	59
Disassembling the Main Unit	61
Separate the Main Unit Into the Upper and the Lower Case Assembly	61
Disassembling the Upper Case Assembly	61
Disassembling the Lower Case Assembly	62
Disassembling the LCD Module	65
Disassembling the External Modules	67
Disassembling the HDD Module	67
Disassembling the Optical Drive Module	67
Chapter Four	70
System Check Procedures	70
External Diskette Drive Check	70
External CD-ROM Drive Check	70
Keyboard or Auxiliary Input Device Check	70
Memory check	70
Power System Check	71
Touchpad check	72
Power-On Self-Test (POST) Error Message	73
Index of Error Messages	74
Phoenix BIOS Beep Codes	76
Index of Symptom-to-FRU Error Message	80
Intermittent Problems	84
Undetermined Problems	85
Use NAPP CD to Build Master Hard Disc Drive	86
CD to Disk Recovery	86
Disk to Disk Recovery	89
Chapter Five	93
Top View	93
Bottom View	95
Chapter Six	98
Exploded Diagram	98
Appendix A	114
Model Definition and Configuration	114
TravelMate 4400 Series	114
Appendix B	116
Microsoft® Windows® XP Pro Environment Test	116
Appendix C	121

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