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Extensa 4120
Service manual
Acer Extensa 4120 Service Manual page 8
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User manual
(99 pages)
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Contents
Table of Contents
Troubleshooting
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Table of Contents
Removing the LED Board
Removing the Fingerprint and Touchpad Boards
Removing the Card Reader Board
Removing the Bluetooth Board
Removing the System Board
Removing the Modem Board
Removing the Speakers
LCD Module Disassembly
LCD Module Disassembly Flowchart
57
Removing the LCD Bezel
Removing the Inverter Board
Removing the LCD Module Hinges
Removing the LCD Panel
Removing the LCD-CCD Cable
Removing the LCD Panel Brackets
Removing the Internal Microphone and the CCD Board
Removing the WLAN Antennas
Hardware Diagnostic Procedure
65
System Troubleshooting
65
Chapter 4
65
System Check Procedures
66
External Diskette Drive Check
66
External CD-ROM Drive Check
66
Keyboard or Auxiliary Input Device Check
66
Memory Check
67
Power System Check
67
Touchpad Check
68
POST Error Indicators
69
POST Error Message
69
POST Beep Codes
72
Index of Symptom-to-FRU Error Message
77
Intermittent Problems
80
Undetermined Problems
81
Online Support Information
82
System Block Diagram
83
System Block Diagram and Board Layout
83
Chapter 5
83
83
System Board Layout
84
Top View
84
Bottom View
85
System Switch
86
FRU (Field Replaceable Unit) List
87
Chapter 6
87
Aspire 5910 Exploded Diagram
88
TravelMate 4520 FRU List
89
TravelMate 4520 Series Model Configurations
107
Appendix A 107
VIII
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This manual is also suitable for:
Travelmate 4220
Travelmate 4520
Extensa 4420
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