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Acer Aspire easyStore H340 Aspire easyStore H340 Home Server Service Guide - Page 59

System Jumpers

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System Jumpers Name BIOS recovery jumper System type select jumper Debug/user mode jumper Location JP1 JP2 JP3 Settings 1-2 Normal (default) 2-3 Clear CMOS 1-2 Aspire system (default) 2-3 Altos system Open User mode enabled (default) Closed Debug mode enabled Chapter 5 51

Section	Page
Aspire easyStore H340 Service Guide	1
Table of Contents	7
System Tour	9
Features	9
System Tour	10
Front Panel	10
Rear Panel	11
Internal Components	12
System LED Indicators	13
System Utilities	17
Phoenix BIOS Setup Utility	17
Entering BIOS setup	18
Navigating Through the Setup Utility	19
Setup Utility Menus	20
System Disassembly	29
Disassembly Requirements	29
Pre-disassembly Procedure	30
Main Unit Disassembly	31
Removing the Hard Disk	32
Removing the System Cover	35
Removing the Front Bezel	36
Removing the Front I/O Board	38
Removing the Backplane Board	40
Removing the Power Supply	43
Removing the System Fan	46
Removing the Memory Module	47
Removing the Mainboard	49
Removing the HDD Access LED cables	50
System Troubleshooting	51
Hardware Diagnostic Procedure	51
H340 Diagnostics	52
System Check Procedures	54
Power System Check	54
System External Inspection	54
System Internal Inspection	54
Error Codes	55
Online Support Information	56
System Block Diagram and Board Layout	57
System Block Diagram	57
Board Layout	58
Mainboard	58
System Jumpers	59
FRU (Field Replaceable Unit) List	61
Exploded Diagram	62
FRU List	64

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