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Acer Aspire 3935 Acer Aspire 3965 Series Service Guide - Page 64

Removing the I/O Board, Removing the DC-in Cable

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Removing the I/O Board 1. Perform the "Removing the Mainboard" procedure on page 51. 2. Remove the screws securing the I/O board. Type M2 x L3 Quantity 2 Color Black Torque 1.6 kgf-cm 3. Remove the heat sink fan from the mainboard. Part Number 86.00D91.723 Removing the DC-in Cable 1. Perform the "Removing the Mainboard" procedure on page 51. 2. Release the DC-in cable from its upper case latches to remove it. 56 Acer Aspire 3935 Service Guide

Section	Page
Acer Aspire 3935 Notebook Computer Service Guide	1
Table of Contents	7
Features and Specifications	9
Features	9
Hardware	9
Display and Camera	10
Keyboard and Pointing Device	10
LED Indicators and Buttons	10
Software	11
Ergonomics and Security	11
Environmental Requirements	11
System Tour	12
Top View	12
Close Front View	14
Rear View	14
Left View	15
Right View	15
Base View	16
Specifications	17
System Utilities	25
Phoenix SecureCore Setup Utility	25
Accessing the Setup Utility	26
Navigating through the Setup Utility	27
Setup Utility Menus	27
System Disassembly	35
Disassembly Tools	35
Stages of the Disassembly Process	35
Equivalent Torque Values	35
System Screw List	36
Pre-disassembly Procedure	36
External Modules Disassembly	37
External Modules Disassembly Flowchart	37
Removing the Battery Pack	38
Removing the SD Dummy Card	38
Removing the Lower Case Cover	39
Removing the Memory Modules	40
Removing the Hard Disk Drive	41
Removing the WLAN Module	42
Removing the WWAN (3G) Module	43
Main Unit Disassembly	46
Main Unit Disassembly Flowchart	46
Removing the Middle Cover	47
Removing the Keyboard	47
Removing the LCD Module	48
Removing the Upper Case	51
Removing the Speakers	53
Removing the Thermal Bracket	54
Removing the Fingerprint Reader Board	55
Removing the Microphone	56
Removing the Touchpad Board	57
Removing the Cover Switch Cable	57
Removing the Optical Disc Drive	58
Removing the Mainboard	59
Removing the Heat Sink Fan (HSF) Assembly	62
Removing the Processor	63
Removing the I/O Board	64
Removing the DC-in Cable	64
LCD Module Disassembly	65
LCD Module Disassembly Flowchart	65
Removing the LCD Bezel	66
Removing the LCD Panel	67
Removing the LCD Panel Brackets	69
Removing the CCD Board	70
Troubleshooting	71
Clearing a BIOS Password	71
Unlocking the Hard Drive	72
BIOS Recovery	72
Creating the BIOS Crisis Recovery Disk	72
Performing a BIOS Recovery	73
POST Error Indicators	73
POST Error Messages	73
POST Beep Codes	75
BIOS Beep Codes for Boot Block in Flash ROM	78
Troubleshooting Procedure	79
System Check Procedures	79
Intermittent Problems	81
Undetermined Problems	81
Online Support Information	82
System Architecture	83
Mainboard Layout	83
Top View	83
Bottom View	84
Block Diagram	85
Field Replaceable Unit (FRU) List	87
Acer Aspire 3935 Exploded Diagram	88
Acer Aspire 3935 FRU List	90
Model Definition and Configurations	100
Test Compatible Components	127

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