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Acer RL100 Acer Revo L100 Desktop Service Guide - Page 53

System Troubleshooting, Hardware Diagnostic Procedure,

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Chapter 4 System Troubleshooting This chapter provides instructions on how to troubleshoot system hardware problems. Hardware Diagnostic Procedure IMPORTANT:The diagnostic tests described in this chapter are only intended to test Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. 1. Obtain the failing symptoms in as much detail as possible. 2. Verify the symptoms by attempting to recreate the failure by running the diagnostic tests or repeating the same operation. 3. Refer to "Power System Check" on page 46 and "Beep Codes" on page 52 to determine which corrective action to perform. Chapter 4 45

Section	Page
Table of Contents	7
System Tour	9
Features	9
System Components	11
Front Panel	11
Rear Panel	12
Internal Components	13
System LED Indicator	14
System Utilities	15
CMOS Setup Utility	15
Entering CMOS setup	16
Navigating Through the Setup Utility	16
Setup Utility Menus	17
Updating the BIOS	33
System Disassembly	35
Disassembly Requirements	35
Pre-disassembly Procedure	36
External Module Disassembly	37
Removing the USB RF Receiver	37
Removing the Card Reader Dummy Card	37
Removing the Wireless Touchpad	38
Removing the Dummy Stand	38
Main Unit Disassembly	39
Removing the Top Cover	40
Removing the Optical Drive	41
Removing the Heatsink	43
Removing the Fan	44
Removing the WLAN Module	45
Removing the I/O Board	46
Removing the Mainboard	47
Removing the Memory Module	48
Removing the TV Tuner Card	49
Removing the Battery	50
Removing the Hard Disk Drive	51
System Troubleshooting	53
Hardware Diagnostic Procedure	53
System Check Procedures	54
Power System Check	54
System External Inspection	54
System Internal Inspection	54
Checkpoints	55
Viewing BIOS checkpoints	55
Bootblock Initialization Code Checkpoints	55
Bootblock Recovery Code Checkpoints	56
POST Code Checkpoints	57
DIM Code Checkpoints	59
Beep Codes	60
BIOS Flashing and Recovery	61
Undetermined Problems	65
System Block Diagram and Board Layout	67
System Block Diagram	67
Mainboard Layout	68
Top view	68
Bottom view	69
FRU (Field Replaceable Unit) List	71
Exploded Diagram	72
FRU List	74

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