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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 the system board in loop mode at least 10 times.
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.
Chapter 4 71
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Table of contents
- 7 Features
- 10 System Block Diagram
- 11 Board Layout
- 11 Top View
- 12 Bottom View
- 13 A TravelMate tour
- 13 Front View
- 14 Closed Front View
- 14 Left View
- 16 Right View
- 17 Rear Panel
- 18 Bottom Panel
- 19 Indicators
- 20 Launch Keys
- 21 Touchpad
- 21 Touchpad Basics
- 23 Using the Keyboard
- 23 Lock Keys and embedded mumeric keypad
- 24 Windows Keys
- 25 Hot Keys
- 27 Special Key
- 28 Hardware Specifications and Configurations
- 39 BIOS Setup Utility
- 40 Navigating the BIOS Utility
- 41 Main
- 44 Advanced
- 45 Security
- 46 Boot
- 47 Exit
- 48 BIOS Flash Utility
- 51 General Information
- 51 Before You Begin
- 52 Disassembly Procedure Flowchart
- 54 Removing the Battery Pack
- 55 Removing the Wireless LAN Card/the HDD Module/the Memory/the CPU/ the ODD Module and the LCD Module
- 55 Removing the Wireless LAN Card and the HDD Module
- 55 Removing the Memory and the CPU
- 56 Removing the ODD Module and the LCD module
- 59 Disassembling the Main Unit
- 59 Separate the Main Unit Into the Upper and the Lower Case Assembly
- 59 Disassembling the Upper Case Assembly
- 60 Disassembling the Lower Case Assembly
- 62 Disassembling the LCD Module
- 63 Disassembling the External Modules
- 63 Disassembling the HDD Module
- 63 Disassembling the ODD Module
- 65 System Check Procedures
- 65 External Diskette Drive Check
- 65 External CD-ROM Drive Check
- 65 Keyboard or Auxiliary Input Device Check
- 65 Memory check
- 66 Power System Check
- 67 Touchpad check
- 68 Insyde MobilePro BIOS POST Beep Code and POST Messages
- 70 Insyde MobilePro BIOS POST Codes
- 74 Index of Symptom-to-FRU Error Message
- 78 Intermittent Problems
- 79 Undetermined Problems
- 80 Top View
- 81 Bottom View
- 83 Exploded Diagram
- 83 The System
- 84 Upper Case Assembly
- 85 Lower Case Assembly
- 86 LCD Module
- 87 HDD Module
- 87 ODD Module