Acer 4740G User Manual Page 37
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Chapter 1 27
Audio Interface
Features • Compliant with Universal Serial Bus Specification Revision 2.0
• Compliant with USB Mass Storage Class Bulk only Transport Specification
Rev. 1.0
• Support High-speed (480Mbps) and Full-speed (12Mbps) Data Transfer
• USB bus power operation
• Support Control, Bulk IN / OUT data pipes
• Support the following memory card interfaces:
• Secure Digital TM (SD), MultiMediaCard TM (MMC), Mini-SD, Micro-SD
(T-flash), RS-MMC,
• Mobile-MMC and MMC-micro
• Memory Stick TM (MS), Memory Stick PROTM (MS-PRO), MS Duo, MS-
PRO Duo and Micro-MS (M2)
• MSPRO-HG Duo 8-bit mode
• xD-Picture Card TM (xD) including Type M and Type H
• Support hardware ECC (Error Correction Code) function
• Support hardware CRC (Cyclic Redundancy Check) function
• Programmable clock rate for flash memory card interfaces
• Support MS-PRO v1.02
• Support MS v1.43
• Support MS PRO-HG Duo v1.01
• Support SD version 2.0
• Support MMC version 4.2
• Support xD v1.2
• Integrated Fast 8051 microprocessor
• External serial EEPROM interface
• 12MHz crystal oscillator with integrated PLL
• Support 48Mhz directly input from clock generator
• On chip 3.3V to 1.8V regulator
• On chip MOSFET with 250mA capability for direct power control of all
types memory cards
• Support Spread Spectrum Clock for SD/MMC and MS/MSPRO/HG to
reduce EMI effect
• Support USB remote wake-up ability with memory card inserted and
removal operation
• Automatically controls USB online / offline to reduce power consumption
• 48-pin LQFP package
Item Specification
Audio Controller REALTEK ALC888S-VC
Audio onboard or
option
Onboard
Mono or Stereo Stereo
Internal Microphone AC-coupled input,100mV
P-P
maximum
Internal speaker/
Quantity
2 * 4 Ohm 2W Main Speakers
Item Specification
- Aspire 4740/4740G Series 1
- Service Guide 1
- Revision History 2
- Copyright 3
- Disclaimer 3
- Conventions 4
- Table of Contents 10
- System Specifications 11
- Environment 13
- System Block Diagram 14
- Your Acer Notebook tour 15
- Closed Front View 17
- Left View 18
- Right View 19
- Rear View 19
- Easy-Launch Buttons 21
- Indicators 21
- Using the Keyboard 23
- Windows Keys 24
- Hot Keys 25
- Special Key 26
- Using the System Utilities 27
- Chapter 1 23 33
- • Samsung LTN140AT01-G01 35
- • AUO B140XW01 35
- • LG LP140WH1 35
- • CMO N140B6 - L02 35
- System Utilities 39
- Information 40
- Security 42
- Setting a Password 43
- Removing a Password 43
- Set Supervisor Password 44
- BIOS Flash Utility 47
- DOS Flash Utility 48
- Chapter 2 39 49
- WinFlash Utility 50
- Removing BIOS Passwords: 52
- Cleaning BIOS Passwords 53
- Miscellaneous Utilities 54
- 46 Chapter 2 56
- Disassembly Requirements 57
- Chapter 3 57
- General Information 58
- Removing the Battery Pack 60
- Removing the SD Dummy Card 61
- Removing the Lower Covers 62
- Chapter 3 53 63
- Removing the WLAN Module 64
- Chapter 3 55 65
- Removing the DIMM Modules 66
- 58 Chapter 3 68
- Step Size Quantity Screw Type 68
- HDD Carrier M3*3 4 68
- Main Unit Disassembly Process 71
- Removing the Hinge Covers 73
- Removing the Switch Cover 74
- Chapter 3 65 75
- Removing the Keyboard 76
- Removing the Speaker Module 77
- 68 Chapter 3 78
- Removing the LCD Module 79
- 70 Chapter 3 80
- Chapter 3 71 81
- Chapter 3 73 83
- Removing the Upper Cover 84
- 78 Chapter 3 88
- Removing the TouchPad Bracket 89
- 80 Chapter 3 90
- Removing the Media Board 91
- 82 Chapter 3 92
- Media Board M2.5*3 2 92
- Removing the USB Board 93
- 84 Chapter 3 94
- Removing the Modem Module 95
- Removing the Bluetooth Module 96
- Chapter 3 87 97
- Bluetooth Module M2.5*3 1 97
- Removing the Mainboard 98
- Chapter 3 89 99
- Removing the RJ-11 Port 100
- Chapter 3 91 101
- Removing the Thermal Module 102
- Removing the CPU 104
- Removing the LCD Bezel 106
- Chapter 3 97 107
- Removing the Camera Module 108
- Removing the LCD Panel 109
- 100 Chapter 3 110
- Removing the Antennas 112
- Removing the MIC Module 113
- Replacing the MIC Module 114
- Replacing the Antennas 115
- Chapter 3 107 117
- Replacing the LCD Panel 118
- Chapter 3 109 119
- Replacing the Camera Module 120
- Replacing the LCD Bezel 121
- Replacing the CPU 122
- Replacing the Thermal Module 123
- Replacing the RJ-11 Port 124
- Replacing the Mainboard 125
- Replacing the Modem Module 127
- Replacing the USB Board 127
- Replacing the Media Board 128
- Chapter 3 119 129
- Chapter 3 121 131
- Replacing the Upper Cover 132
- 124 Chapter 3 134
- Replacing the LCD Module 135
- Replacing the Speaker Module 138
- Replacing the Keyboard 139
- Replacing the Switch Cover 140
- Chapter 3 131 141
- Replacing the Hinge Covers 142
- Replacing the ODD Module 143
- Replacing the DIMM Modules 144
- Replacing the WLAN Module 145
- Replacing the Lower Covers 145
- Replacing the Battery 146
- Troubleshooting 147
- Power On Issue 148
- No Display Issue 149
- Random Loss of BIOS Settings 150
- LCD Failure 151
- Built-In Keyboard Failure 151
- Touchpad Failure 152
- Internal Speaker Failure 152
- Sound Problems 153
- Internal Microphone Failure 154
- HDD Not Operating Correctly 155
- ODD Failure 156
- Discs Do Not Play 157
- Discs Do Not Burn Properly 157
- Playback is Choppy 157
- Drive Not Detected 158
- Drive Read Failure 158
- USB Failure (Rightside) 159
- Modem Function Failure 159
- Wireless Function Failure 160
- Bluetooth Function Failure 160
- EasyTouch Button Failure 161
- Media Board Failure 161
- Fingerprint Reader Failure 162
- Thermal Unit Failure 162
- External Mouse Failure 163
- Other Failures 163
- Intermittent Problems 164
- Undetermined Problems 164
- Post Codes 165
- Top View 171
- Chapter 5 171
- Bottom View 172
- Clearing Password Check 173
- BIOS Recovery by Crisis Disk 174
- Chapter 6 175
- Main Module 176
- Aspire 4740/4740G FRU List 177
- Screw List 185
- 176 Chapter 6 186
- Chapter 6 177 187
- Aspire 4740 188
- Appendix A 188
- Aspire 4740G 194
- Appendix A 198 208
- Test Compatible Components 209
- Microsoft 210
- 7 Environment Test 210
- 204 Appendix B 214
- Online Support Information 215
- 206 Appendix C 216
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