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Acer TravelMate 270 TravelMate 270 Service Guide - Page 88

Intermittent Problems, If an error is detected by the main battery test

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Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1. Run the diagnostic test for several times to isolate the problem. 2. If no error is detected, do not replace any FRU. 3. If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors. If an error is detected by the main battery test, see "Check the Power Adapter" on page 74 If an error is detected by the display test, see "Index of Symptom-to-FRU Error Message" on page 80 . If an error is detected by the floppy disk drive test, see "External Diskette Drive Check" on page 72. If an error is detected by the keyboard test, see "Keyboard or Auxiliary Input Device Check" on page 73. Chapter 4 83

Section	Page
TravelMate 270	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
Table of Contents	6
Ch1. System Specifications	8
Features	8
System Block Diagram	10
Board Layout	11
Top View	11
Bottom View	12
Outlook View	13
Front View	13
Left Panel	15
Right Panel	16
Rear Panel	17
Bottom Panel	18
Indicators	19
Lock Keys	20
Embedded Numeri c Keypad	21
Windows Keys	22
Hot Keys	23
The Euro Symbol	25
Launch Keys	26
E-Mail Detection	27
Touchpad	28
Touchpad Basics	28
Hardware Specifications and Configurations	30
Ch2. System Utilities	42
BIOS Setup Utility	42
Navigating the BIOS Utility	42
Main	44
System Devices	46
Security	47
Boot	51
Info.	52
Exit	53
BIOS Flash Utility	54
System Utility Diskette	54
System Diagnostic Diskette	54
Running Diagnostics Program	55
Ch3. Machine Disassembly and Replacement	60
General Information	61
Disassembly Procedure Flowchart	62
Removing the HDD Module/Memory/FDD Module/Optical Module and CPU	65
Removing the HDD Module	65
Removing the Memory	65
Removing the FDD Module	65
Removing the Optical Module	65
Removing the CPU	66
Removing the LCD Module and Switch Board	68
Removing the LCD Module	68
Removing the Switch Board	69
Disassembling the Main Unit	70
Separate the main unit into the logic upper and the logic lower assembly	70
Disassembling the logic upper	70
Disassembling the logic lower	72
Disassembling the LCD Module	73
Disassembling the External Modules	74
Disassembling the HDD Module	74
Disassembling the Floppy Disk Drive Module	74
Disassembling the Optical Drive Module	74
Ch4. Troubleshooting	76
System Check Procedures	77
External Diskette Drive Check	77
External CD-ROM/DVD-ROM Drive Check	77
Keyboard or Auxiliary Input Device Check	78
Memory Check	78
Power System Check	78
Touchpad Check	80
Display Check	80
Sound Check	81
Power-On Self-Test (POST) Error Message	82
Index of Error Messages	83
Index of Symptom-to-FRU Error Message	85
Intermittent Problems	88
Undetermined Problems	89
Index of AFlash BIOS Error Message	90
Ch5. Jumper and Connector Locations	92
Top View	92
SW1 Settings (Lid switch)	93
SW2 Settings	93
Bottom View	94
Ch6. FRU (Field Replaceable Unit) List	96
Exploded Diagram	97
The System	97
Logic Upper Assy	98
LCD 14.1\	99
LCD 15.0\	100
DVD Assy	101
FDD Assy	102
HDD (W/O HDD) Assy	102
App.A Model Definition and Configuration	113
TravelMate 270 Series	113
Main Features	114
App.B Test Compatible Components	116
Microsoft Windows XP Home Environment Test	117
Microsoft Windows XP Pro Environment Test	119
Microsoft Windows 2000 Environment Test	121

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