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Acer TravelMate 4020 TravelMate 4020 Service Guide - Page 76

No beep Error Messages, FRU/Action in Sequence, Reconnect the DIMM.

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Error Message List No beep Error Messages FRU/Action in Sequence No beep, power-on indicator turns off and LCD is blank. Power source (battery pack and power adapter). See "Power System Check" on page 65. Ensure every connector is connected tightly and correctly. Reconnect the DIMM. LED board. System board. No beep, power-on indicator turns on and LCD is blank. Power source (battery pack and power adapter). See "Power System Check" on page 65. Reconnect the LCD connector Hard disk drive LCD inverter ID LCD cable LCD Inverter LCD System board No beep, power-on indicator turns on and LCD is blank. But you can see POST on an external CRT. Reconnect the LCD connectors LCD inverter ID LCD cable LCD inverter LCD System board No beep, power-on indicator turns on and a blinking cursor shown on LCD during POST. Ensure every connector is connected tightly and correctly System board No beep during POST but system runs correctly. Speaker System board 70 Chapter 4

Section	Page
TravelMate 4020	1
Revision History	2
Copyright	3
Disclaimer	3
Conventions	4
Preface	5
Ch,1 System Specifications	7
Features	7
Mainboard Placement	10
Top View	10
Rear View	11
Block Diagram	13
Outlook View	14
Open View	14
Front Panel	15
Left View	16
Right View	17
Rear View	18
Bottom View	19
Indicators	20
Easy-launch buttons	21
Touchpad	22
Touchpad Basics	22
Using the Keyboard	23
Lock keys and embedded numeric keypad	23
Using System Utilities	27
Acer eManager	27
Launch Manager	28
Hardware Specifications and Configurations	29
Ch.2 System Utilities	39
BIOS Setup Utility	39
Information	40
Main	42
Advanced	44
Security	46
Set Supervisor/User Password	47
Characters 0-9,A-Z (not case sensitive)	47
Boot	49
Exit	50
Ch.3 Machine Disassembly and Replacement	51
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 a...	57
Removing the HDD Module	57
Removing the Memory and the Wireless LAN Card	57
Removing the Thermal Module and CPU	58
Removing the ODD Module	59
Removing the LCD Module	60
Disassembling the Main Unit	61
Separate the Main Unit Into the Upper and the Lower Case Assembly	61
Disassembling the Upper Case Assembly	62
Disassembling the Lower Case Assembly	63
Disassembling the LCD Module	65
Disassembling the External Modules	67
Disassembling the Optical Drive Module	67
Ch.4 Troubleshooting	69
System Check Procedures	70
External Diskette Drive Check	70
External CD-ROM Drive Check	70
Keyboard or Auxiliary Input Device Check	70
Memory check	71
Power System Check	71
Touchpad Check	72
Power-on Self-Test Error Messages	73
Index of Error Messages	74
Phoenix BIOS Beep Codes	77
Index of Symptom-to-FRU Error Message	81
Intermittent Problems	84
Undetermined Problems	85
Ch.5 Jumper and Connector Locations	87
Top View	87
Rear View	88
RTC Jumper	90
Ch.6 FRU (Field Replaceable Unit) List	91

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