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Acer AC100S Acer AC100 Service Guide - Page 46

Removing the RTC Battery, RTC battery has been highlighted with a yellow circle as shown above.

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5. Lift the mainboard off the mainboard tray. Note:Circuit boards >10 cm2 has been highlighted with the yellow rectangle as above image shows. Please detach the Circuit boards and follow local regulations for disposal. Removing the RTC Battery 1. See "Removing the Mainboard" on page 38. 2. Remove the RTC battery. Note: The RTC battery has been highlighted with a yellow circle as shown above. Please follow local regulations for disposal of used RTC batteries. 40 Chapter 5

Section	Page
Preface	2
Revision History	2
Copyright	2
Disclaimer	2
Conventions	3
Safety, Care and Regulatory Information	4
Preventing electrostatic discharge	4
Server warnings and cautions	4
System components	7
Exploded view	7
System parts list	8
System specifications	11
Hardware specifications	11
Software specifications	11
Environmental specifications	12
Mechanical specifications	12
System appearance	13
Front panel	13
Front inner view	14
Rear panel	15
Internal components	16
System LED Indicators	17
Front panel	17
Rear panel	18
System block diagram	19
Mainboard	21
Mainboard connectors	21
System Jumpers and Switch	22
Hardware removal and installation	23
Disassembly Requirements	23
Pre-disassembly Procedure	23
Disassembly Procedure	24
Removing the Hard Disk	24
Removing the System Cover	26
Removing the Front Bezel	27
Removing the Backplane Board	28
Removing the Fan	31
Removing the HDD Access LED cables	33
Removing the Power Supply	34
Removing the Mainboard Tray	38
Removing the Heatsink	41
Removing the Processor	42
Removing the Memory Modules	44
Removing the Mainboard	44
Removing the RTC Battery	46
Removing the Expansion Slot Cover	47
Removing the Front I/O Board	47
Removing the Power Button Cable Module	49
Reassembly Procedure	51
Replacing the Power Button Cable Module	51
Installing the Front I/O Board	52
Reinstalling the Expansion Slot Cover	54
Replacing the RTC Battery	55
Replacing the Mainboard	55
Installing the Memory Modules	57
Reinstalling the Processor	58
Reinstalling the Heatsink	59
Reinstalling the Mainboard Tray	60
Reinstalling the Power Supply	62
Connecting the HDD Access LED cables	66
Reinstalling the Fan	67
Reinstalling the Backplane Board	69
Reinstalling the Front Bezel	72
Reinstalling the System Cover	73
Reinstalling the Hard Disk	74
Hardware Diagnostic Procedure	79
System Check Procedures	80
Power system check	80
System external inspection	80
System internal inspection	80
System Diagnosis	81
Hardware diagnostic program	81
System Status Error Codes	83
BIOS Recovery	83
Clearing CMOS	84
Undetermined Problems	84
BIOS Setup	85
Entering the BIOS Setup Utility	86
Navigating Through the Setup Utility	86
Setup Utility Menus	87
Main	88
Advanced	89
Security	96
Server Mgmt	97
Boot Options	98
BIOS POST Messages	101
POST Code Checkpoints	101
Viewing BIOS checkpoints	101
POST code checkpoints list	102
BIOS POST Codes	106
Recoverable POST Errors	106
Terminal POST Errors	106

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