Acer TravelMate 7720 TravelMate 7720 / 7320 and Extensa 7620 Service Guide
Acer TravelMate 7720 Manual
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- Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 1
TravelMate 7720/7320 Series Service Guide Service guide files and updates are available on the ACER/CSD web; for more information, please refer to http://csd.acer.com.tw PRINTED IN TAIWAN - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 2
Revision History Please refer to the table below for the updates made on TravelMate 7720/7320 Series service guide. Date Chapter Updates II - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 3
, manual or otherwise, without the prior written permission of Acer Incorporated. Disclaimer The information in this guide is subject to change without notice. Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the contents hereof and specifically - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 4
are used in this manual: SCREEN MESSAGES Denotes actual messages that appear on screen. NOTE WARNING CAUTION IMPORTANT Gives bits and pieces of additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. Gives - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 5
card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this generic service guide. In such cases, please part number change is made, it will not be noted in the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 6
VI - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 7
1 System Block Diagram 4 Your Acer Notebook tour 5 Front View 5 Closed Front View 6 Left View 7 Right View 8 Rear Panel 8 Bottom Panel 9 Indicators 9 Easy-Launch Buttons 10 Touchpad Basics 11 Using the Keyboard 13 Lock Keys and embedded numeric keypad 13 Windows Keys 14 Hot Keys 15 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 8
model only 77 Removing the Middle Cover and the Power Board 78 Removing the Keyboard 80 Removing the LCD Module 81 Separating the Upper Case from the Lower Case 84 Removing the Launch Board 86 Removing the Touch Pad Board Module 87 Removing the Main Board 90 Removing the ODD Board Module 92 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 9
125 Bottom View 126 FRU (Field Replaceable Unit) List 129 TravelMate 7720/7320 Exploded Diagram 130 TravelMate 7720/7320 Series 140 Model Definition and Configuration 140 Test Compatible Components 163 Microsoft® Windows® Vista Environment Test 164 Online Support Information 167 IX - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 10
Table of Contents X - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 11
) K Up to 2 GB of DDR2 667 MHz memory (for TM7320), upgradeable to 4 GB using two soDIMM modules (dual-channel support) Display and graphics K 17" WXGA+ TFT LCD, 1400 x 900 pixel resolution, supporting simultaneous multi-window viewing via Acer GridVista™ K Mobile Intel® GM965/GL960 Express Chipset - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 12
switches: WLAN and Bluetooth® Audio K Two built-in Acer 3DSonic stereo speakers K Intel® High Definition Audio support K Built-in microphone K MS-Sound compatible Communication K Acer Video Conference featuring: jIntegrated Acer CrystalEye webcam supporting enhanced Acer PrimaLite™ technology - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 13
K Microphone jack K Ethernet (RJ-45) port K Modem (RJ-11) port K DC-in jack for AC adaptor Environment K Temperature: jOperating: 5 °C to 35 °C jNon-operating: -20 °C to 65 °C K Humidity (non-condensing): jOperating: 20% to 80% jNon-operating: 20% to 80% Chapter 1 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 14
BUS 667/[email protected] Crestline AGTL+ CPU I/F DDR Memory I/F INTEGRATED GRAHPICS LVDS, CRT I/F 71.CREST. 17,18,19 LPC BUS CRT 15 LCD 14 DVI 44 VGA Borad 28 VCC CP2211F 26 1394 CONN 27 PCMCIA SLOT Support TypeII 27 MS/MS Pro/xD/ HDD 21 CDROM 21 MINI USB BlueTooth 22 Finger print 34 KBC - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 15
communication. 2 Microphone Internal microphone for sound recording. 3 Display screen Also called Liquid-Crystal Display (LCD), displays computer output. 4 Easy-launch Buttons for launching frequently used programs. buttons 5 Palmrest Comfortable support area for your hands when you - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 16
Acer BioProtect fingerprint reader supporting Acer Keyboard For entering data into your computer. 10 Power button Turns lid. Speakers Left and right speakers deliver stereo audio output. 5-in-1 card reader Accepts Secure Digital (SD, MultiMediaCard (MMC), Memory Stick (MS), Memory Bluetooth - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 17
Connects to an Ethernet 10/100/1000-based network. External display (VGA) port Connects to a display device (e.g., external monitor, LCD projector). DVI-D port Supports digital video connections. S-Video/TV-out (NTSC/PAL) port Connects to a television or display device with S-video input. USB - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 18
Internal optical drive; accepts CDs or DVDs Lights up when the optical drive is active. Ejects the optical disk from the drive. Ejects the optical drive tray when the computer is turned off. # 1 2 3 4 Icon Item Three USB 2.0 ports Modem (RJ-11) port DC-in jack Description Connect to USB - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 19
the computer's optional second hard bay disk. (Secured with a screw). 2 Memory Houses the computer's main memory. compartment 3 Battery lock Locks the battery in position. 4 Battery release Releases the battery to remove the battery pack. latch 5 Battery bay Houses the computer - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 20
panel indicators are visible even when the computer cover is closed. Icon Function Description Power Indicates the computer's power status. Battery Indicates the computer's battery status. Bluetooth Indicates the status of Bluetooth communication. Wireless LAN Indicates the status of - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 21
give users one-touch access to protection and manageability features for a more secure, smarter and easier way to work. K Lock key - runs the Windows® lock function to lock the notebook when you step out. If the laptop is equipped with Acer BioProtect, you only need to swipe your finger to log into - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 22
Function Execute Left Button (1) Click twice quickly Right Button (4) Main touchpad (2) Tap twice (at the same speed as doubleclicking the mouse button) Center button scrolling is enabled on your touchpad. It can be disabled under Mouse settings in Windows Control Panel. 12 Chapter 1 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 23
cursor, lock, Windows, function and special keys. Lock Keys and embedded numeric keypad The keyboard has three lock external keypad. When Scroll Lock is on, the screen moves one line up or down when you press keypad Cursor-control keys on embedded keypad Main keyboard keys Num Lock on Type numbers - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 24
Keys The keyboard has two keys that perform Windows-specific functions. Key Windows key Application key Description Pressed alone, this key has the same effect as clicking on the Windows Start button; it launches the Start menu. It can also be used with other keys to provide a variety of functions - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 25
) and both. Turns the display screen backlight off to save power. Press any key to return. Turns the internal touchpad on and off. Turns the speakers on and off. Increases the sound volume. Decreases the sound volume. Increases the screen brightness. Decreases the screen brightness. Chapter - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 26
, or hold and then press the key at the upper-center of the keyboard. NOTE: This function varies by the operating system version. NOTE: Some fonts and software do not support the Euro symbol. Please refer to www.microsoft.com/ typography/faq/faq12.htm for more information. 16 Chapter - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 27
in the upper half of your screen, it provides access to the following utilities: K Acer eNet Management hooks up to location-based networks intelligently. K Acer ePower Management optimizes battery usage via customizable power plans. K Acer ePresentation Management connects to a projector and - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 28
Acer eNet Management can save network settings for a location to a profile, and automatically switch to the wireless AP details, etc.), as well as default printer settings. Security and safety concerns mean that Acer eNet Management does not store username and password information. 18 Chapter 1 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 29
Acer Empowering Technology program group in Start menu, or right-click the Windows power icon in the system tray and select "Acer ePower Management". Using power plans Acer adjust settings for On Battery and Plugged In modes by clicking the appropriate tabs. You can open Windows power options by - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 30
allows you to adjust system settings like LCD brightness and CPU speed. You can also turn on/off system components to extend battery life. 1. Switch to the power plan the window. Click the to view estimated battery life in sleep and hibernate modes. Acer ePresentation Management Acer ePresentation - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 31
vendor. Acer eDataSecurity Management Acer eDataSecurity Management is an encryption utility that protects your files from being accessed by unauthorized persons. It is conveniently integrated with Windows Explorer as a shell extension for quick data encryption/decryption and also supports on-the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 32
that data can't be stolen while your system is unattended. K Removable Storage Devices - includes USB disk drives, USB pen drives, USB flash drives, USB MP3 drives, USB memory card readers, IEEE 1394 disk drives, and any other removable storage devices that can be mounted as a file system when - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 33
backups to hard disk or optical disc K Creation of backups: jFactory default image jUser backup image jCurrent system configuration jApplication backup K Restore and recovery: jFactory default image jUser backup image jFrom previously-created CD/DVD jReinstall applications/drivers Chapter 1 23 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 34
eRecovery Management" on page 61 in the AcerSystem User's Guide. NOTE: If your computer did not come with a Recovery CD or System CD, please use Acer eRecovery Management's "System backup to optical disc" feature to burn a backup image to CD or DVD. To ensure the best results when recovering your - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 35
orientation and synchronization status. Windows Mobility Center also includes Acer-specific settings like Bluetooth Add Device (if applicable), sharing folders overview/sharing service on or off, and a shortcut to the Acer user guide, drivers and utilities. To launch Windows Mobility Center: K Use - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 36
Microsoft® Windows® operating system. Utilizing the uniqueness of one's fingerprint features, Acer BioProtection Fingerprint destination. Users can configure how many versions of a file to maintain. Shadow supports backups on local hard drives, USB/FireWire external hard drives, USB pen drives, - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 37
the process. Settings Apply Start Control Panel Display (2) Extend my windows desktop onto this monitor OK Acer GridVista is a handy utility that offers four pre-defined display settings so you can view multiple windows on the same screen. To access this function, please go to Start>All Programs - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 38
: 1. Run Acer GridVista and select your preferred screen configuration for each display from the task bar. 2. Drag and drop each window into the appropriate Manager allows you to set the four easy-launch buttons located above the keyboard. You can access the Launch Manager by clicking on Start > All - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 39
scan your system. 4. When the scan is complete, review the results of the scan. NOTE: For optimal security, run a Full System Scan when scanning your computer for the first time. You can schedule customized virus scans that run unattended on specific dates and times or at periodic intervals. If you - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 40
Specification 1.1/2.0, IEEE 1394 1.0, USB/1394 CD-ROM Boot Up support, PC Card Standard 1995 (PCMCIA 3.0 Compliant Device), IrDA 1.0, Intel AC97 CNR Specification, WfM 2.0, PXE 2.1, Boot Integrity Service Application Program Interface (BIS) 1.0, PC99a and Mobile PC2001 Compliant Set by setup manual - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 41
) System Memory Item Memory controller Memory size DIMM socket number Supports memory size per socket Supports maximum memory size Supports DIMM type Supports DIMM Speed Supports DIMM voltage Supports DIMM package Memory module combinations Specification Built-in 0MB (no on-board memory) 2 sockets - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 42
2048MB Slot 2 Total Memory 256MB 512MB 1024MB 2048MB support compliant with ACPI 2.0 PCI v2.2 Bluetooth Interface Item Chipset Data throughput Protocol Interface 32 Specification Foxconn T60H928.01 723 bps (full speed data rate) Bluetooth 1.1 (Upgradeable to Bluetooth 1.2 when SIG specification - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 43
Bluetooth Interface Item Connector type Wireless Module 802.11b/g Item Chipset Data throughput Protocol Interface USB Specification Specification Intel® Wireless WiFi Link 4965AGN (dual-band quadmode 802.11a/b/g/Draft-N) network connection, supporting Acer SignalUp™ with InviLink™ Nplify™ - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 44
-Text Load: Manual Release: (a) Electrical Release (Release Button) (b) Release by ATAPI command (c) Emergency Release 5 V +/- 5% (Operating) Super-Multi Drive module Item Vendor & model name Performance Specification Transfer rate (KB/sec) Buffer Memory Interface Specification HLDS Super-Multi - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 45
Specification Applicable disc format CD: CD-DA, CD-ROM, CD-ROM XA, PhotoCD (multi-session), Video CD, Cd-Extra (CD+), CD-text DVD: DVD-VIDEO, DVD-ROM, DVD-R (3.9GB, 4.7GB) DVD-R DL, DVD-RW, DVD-RAM Video-CD (White Book) - MPEG1 Video CD-R (Orange Book Part) CD-RW & HSRW (Orange Book Part Volume1 & - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 46
Item Core logic VGA LAN USB 2.0 Super I/O controller MODEM Bluetooth Wireless 802.11 b+g PCMCIA/ 5 in 1 Card Reader 36 Specification ATI M66/M74/M76 MXM Daughter Board PCIE Yes Specification ATI M66/M74/M76 MXM up to 256MB GDDR2 Specification ICH8M 2.0 USB 1.1 and USB 2.0 Host controller 4 One on - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 47
System Board Major Chips Item Audio Codec Keyboard Item Keyboard controller Total number of keypads Windows logo key Internal & external keyboard work simultaneously Realtek ALC883 Controller Specification NS PC97541V 105-/106-key Yes Plug USB keyboard to the USB port directly: Yes Battery Item - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 48
LCD 17" inch Item Typical White Luminance (cd/m2) also called Brightness Luminance Uniformity Contrast Ratio Response Time (Optical Rise Time/Fall Time) msec Nominal Input Voltage VDD Typical Power Consumption (watt) Weight Physical Size (mm) Electrical Interface Support LCD Specification Specification - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 49
System Power Management ACPI mode Soft Off (G2/S5) Working (G0/S0) Suspend to RAM (S3) Save to Disk (S4) Power Management OS initiated shutdown. All devices in the system are turned off completely. Individual devices such as the CPU and hard disc may be power managed in this state. CPU set power - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 50
40 Chapter 1 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 51
Troubleshooting when problem arises. To activate the BIOS Utility, press F2 during POST (when "Press to enter Setup" message is prompted on the bottom of screen Setup Utility Information Main Advanced Security Boot XXXXXXXXXXXXXXXXXXXXXXX None TravelMate/Extensa 5XXX Acer XXXxXxXX-xXxX- - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 52
Utility There are six menu options: Information, Main, Advanced, Security, Boot, and Exit. Follow these instructions: K To choose a menu, use the shown on the bottom of the screen. Help for parameters are found in the Item Specific Help part of the screen. Read this carefully when making changes - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 53
screen displays a summary of your computer hardware information. Phoenix TrustedCore(tm) Setup Utility Information Main XXXXXXXXXXXXXXXXXXXXXXX None TravelMate/Extensa 5XXX Acer XXXxXxXX-xXxX- field shows the keyboard This field displays the part of the Distributed Computing Environment (DCE). 43 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 54
as enable and disable boot option and recovery. Phoenix TrustedCore(tm) Setup Utility Information Main Advanced Security Boot Exit System Time: System Date: System Memory: Extended Memory: Video Memory: [10:10:10] [04/28/2007] 640 KB 2046 MB 256 MB Item Specific Help , , or - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 55
below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. Parameter System Time System Date System Memory Extended Memory VGA Memory Quiet Boot Power on Display Network Boot F12 Boot Menu D2D Recovery Description Format/Option Sets the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 56
(tm) Setup Utility Information Main Advanced Security Boot Exit Infrared Port: [Enabled] Item Specific Help ASF Configuration Configure AHCI F10 Save and Exit The table below describes the parameters in this screen. Settings in boldface are the default and suggested parameter settings. - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 57
Item Specific Help Supervisor Password controls access of the whole setup utility. It can be used to boot up when Password on boot is enabled. F1 Help Esc Exit Select Item -/+ Change Values F9 Setup Defaults Select Menu Enter Select Sub-Menu F10 Save and Exit NOTE: Please refer to "Remove HDD - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 58
. Shows the setting of the hard disk drive password Press Enter to set the you forget your password, you may have to return your notebook computer to your dealer to reset it. Setting a Password password because the characters do not appear on the screen. 3. Press e. After setting the password, the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 59
Removing a Password Follow these steps: 1. Use the w and y keys to highlight the Set Supervisor Password save the changes and exit the BIOS Setup Utility. If the verification is OK, the screen will display as following. The password setting is complete after the user presses u. Chapter 2 49 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 60
If the current password entered does not match the actual current password, the screen will show you the Setup Warning. If the new password and confirm new password strings do not match, the screen will display the following message. 50 Chapter 2 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 61
the operating system. Bootable devices includes the diskette drive in module bay, the onboard hard disk drive and the CD-ROM in module bay. Phoenix TrustedCore(tm) Setup Utility Information Main Advanced Security Boot Exit Boot priority order: 1: IDE0: XXXXXXXXXXX-(XX) 2: IDE1: 3: CD/DVD - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 62
Exit screen contains parameters that help safeguard and protect your computer from unauthorized use. Phoenix TrustedCore(tm) Setup Utility Information Main Advanced Security Boot Exit Exit Saving Changes Exit Discarding Changes Load Setup Defaults Discard Changes Save Changes Item Specific - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 63
, then you should create a Crisis Recovery Diskette before you use the Phlash utility. NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash. NOTE: Please use the AC adaptor power supply when you run the Phlash utility. If the battery pack does not contain enough power - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 64
: K If you key in wrong HDD password for three time, "HDD password error code" would display on the screen. See the image below. K If you need to solve HDD password locked problem, you can run HDD_PW.EXE 1. Key in "hdd_pw 15494 0" 2. Select "2" 3. Choose one upper-case string K Reboot system and - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 65
Remove BIOS Password: K If you key in wrong Supervisor Password for three time, "System Disabled" would display on the screen. See the image below. Chapter 2 55 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 66
K If you need to solve BIOS password locked problem, you can run BIOS_PW.EXE 1. Key in "bios_pw 14452 0" 2. Choose one upper-case string K Reboot the system and key in "qjjg9vy" or "07yqmjd" to BIOS user password. 56 Chapter 2 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 67
Chapter 2 57 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 68
58 Chapter 2 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 69
contains step-by-step procedures on how to disassemble the notebook computer for maintenance and troubleshooting. Disassembly Requirements To disassemble the computer, you need the following screws with the corresponding components to avoid mismatch when putting back the components. Chapter 3 59 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 70
LCD module disassembly The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence. Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you want to remove the main board, you must first remove the keyboard - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 71
during servicing. For example, if you want to remove the main board, you must first remove the keyboard, then disassemble the inside assembly frame in that order. EXTERNAL MODULE DISASSEMBLY TURN OFF POWER AND PERIPHERALS UNPLUG POWER CABLES Cx2 WLAN BOARD Bx9 LOWER COVER Ax1 OPTICAL DISK DRIVE - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 72
Removing the Battery Pack 1. Turn base unit over. 2. Slide the battery lock/unlock latch to the unlock position. 3. Slide and hold the battery release latch to the release position, then remove the battery from the main unit. 62 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 73
Removing the SD dummy card 1. Push the SD dummy card all the way in to eject it (1, 2). 2. Pull it out from the slot (2). Removing the PC and ExpressCard dummy cards 1. Press the eject button to pop out the button. Chapter 3 63 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 74
2. Press it again (1) to pop out the PC dummy card (2). Remove the PC dummy card from the slot. 3. Push the ExpressCard dummy card all the way in to eject it. 4. Pull it out from the slot. Removing the Lower Cover 1. See "Removing the Battery Pack" on page 62. 64 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 75
) M2 x L4 (9) Color Black 5. Use a plastic screw driver to carefully pry open the lower cover. Torque 1.6 kgf-cm 6. Remove the lower cover from the lower case. Removing the Secondary HDD Cover 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the SD dummy card" on page 63. 3. See - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 76
6. Use a plastic screw driver to pry open the secondary HDD cover. Torque 1.6 kgf-cm 7. Remove the secondary HDD cover from the lower case. Removing the Secondary HDD Bracket and Connector 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Secondary HDD Cover" on page 65. 66 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 77
3. Remove the HDD Bracket from the slot. 4. Disconnect the SATA power connector. 5. Disconnect the SATA connector. 6. Remove the aluminium tape together with the connector. Chapter 3 67 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 78
" on page 63. 4. See "Removing the Lower Cover" on page 64. 5. See "Removing the Secondary HDD Cover" on page 65. 6. Push out the latches on both sides of the DIMM socket to release the DIMM. 7. Remove the DIMM module. Removing the WLAN Board Modules 1. See "Removing the Battery Pack" on page 62 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 79
back to the WLAN board, make sure the cable are arranged properly. Removing the Hard Disk Drive Module 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the SD dummy card" on page 63. 3. See "Removing the PC and ExpressCard dummy cards" on page 63. 4. See "Removing the Lower Cover - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 80
it or placing heavy objects on top of it. 7. Remove the four screws (G) as shown. Step 1~4 Size (Quantity) M3 x L4 (4) Color Silver 8. Remove the hard disk drive from the bracket. Torque 1.8 kgf-cm Removing the Optical Drive Module 1. See "Removing the Battery Pack" on page 62. 70 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 81
2. Turn the base unit over, then remove the one screw (A) on the bottom side of the unit. Step 1 Size (Quantity) M2.5 x L6 (1) Color Black 3. Carefully use a plastic screw driver to eject the optical drive tray. Torque 3.0 kgf-cm 4. Pull the optical drive module out from the main unit. - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 82
5. Remove the two screws (K) securing the locker bracket and remove the locker bracket from the optical disk drive module. Step 1~2 Size (Quantity) M2 x L3 (2) Color Black Torque 1.6 kgf-cm 72 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 83
C x9 (Cx5 for UMA module) MIDDLE COVER Cx2 MODEM BOARD CPU/VGA THERMAL MODULE CPU Dx2 VGA BOARD KEYBOARD Ax2 Hx2 LCD MODULE Cx 1 POWER BOARD A x 20 UPPER CASE Jx1 Cx4 MAIN BOARD LAUNCH BOARD Cx4 TOUCH PAD BRACKET ASSEMBLY ODD BOARD Cx1 USB BOARD Cx4 LEFT AND RIGHT SPEAKER MODULE - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 84
detach the modem board from the main board. Torque 1.8 kgf-cm NOTE: The modem cable is still attached to the modem board. 7. Disconnect the modem cable from the modem board. Removing the Heatsink Fan Module 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 85
heatsink fan module. Step 1~2 Size (Quantity) M2 x L4 (2) Color Silver 5. Remove the heatsink fan module from the main board. Torque 1.6 kgf-cm Removing the CPU and VGA Heatsink Module 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. Chapter 3 75 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 86
(Quantity) M2 x L4 (9) Color Silver Torque 3.0 kgf-cm a. For system without the discrete graphic card, there are only 5 screws holding the heatsink. 4. Slide out and remove the heatsink module. 76 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 87
the CPU with PIN 1 at the corner as shown. Removing the VGA board (for Discrete model only) 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the Heatsink Fan Module" on page 74. 4. See "Removing the CPU and VGA Heatsink Module" on page 75 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 88
6. Carefully remove the VGA board from the main board. Torque 1.6 kgf-cm Removing the Middle Cover and the Power Board 1. See "Removing the Battery Pack" on page 62. 2. Open the LCD screen all the way to facilitate the easy removal of the middle cover. 3. To remove the Middle Cover, carefully - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 89
4. Detach the cover and turn it over on the keyboard. 5. Disconnect the Power board cable from the main board and disconnect the Power board cable. Chapter 3 79 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 90
securing the Power board to the middle cover, and remove the Power board from the middle cover. Step 1 Size (Quantity) M2 x L4 (1) Color Silver Torque 1.6 kgf-cm Removing the Keyboard 1. See "Removing the Battery Pack" on page 62.. 2. See "Removing the Middle Cover and the Power Board" on page - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 91
slide it out; then turn it over on the touchpad area. 5. Disconnect the keyboard cable from the main board to remove the keyboard. Removing the LCD Module 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 92
6. Remove the acetic tape and disconnect the LCD coaxial cable from the LCD1 connector on the main board. 7. Remove the internal microphone cable from the INTMIC1 connector on the main board and release the cables from the latches. 82 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 93
cables from the hole and latches as shown. 9. Remove the two screws (A) from the base of the unit. Step 1~2 Size (Quantity) M2.5 x L6 (2) Color Black Torque 4.0 kgf-cm 10. Remove the two screws (H) from the left and right hinge of the LCD module. Step 1~2 Size (Quantity) M2.5 x L8 (2) Color - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 94
15. See "Removing the VGA board (for Discrete model only)" on page 77. 16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. Disconnect the cover switch cable from LID1 on the main board. 84 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 95
DC in cable from the main board. 21. Disconnect the Launch board cable from the SWITCHCN1 from the main board. 22. Disconnect the fingerprint cable (select model only) from the FPCN1 connector on the main board. 23. Disconnect the touchpad cable from the TOUCHPAD1 on the main board. Chapter 3 85 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 96
26. Remove the upper case from the main unit. Removing the Launch Board 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the SD dummy card" on page 63. 3. See "Removing the PC and ExpressCard dummy cards" on page 63. 4. See "Removing the Lower Cover" on page 64. 5. See "Removing the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 97
Module" on page 75. 14. See "Removing the CPU" on page 77. 15. See "Removing the VGA board (for Discrete model only)" on page 77. 16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. See - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 98
the CPU" on page 77. 15. See "Removing the VGA board (for Discrete model only)" on page 77. 16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. See "Separating the Upper Case from the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 99
22. Remove the four screws (C) on the touch pad bracket and remove the touch pad bracket from the upper case. Step 1~4 Size (Quantity) M2 x L4 (4) Color Silver 23. Remove the fingerprint board from the upper case. Torque 1.6 kgf-cm Chapter 3 89 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 100
it is defective. Removing the Main Board 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the SD dummy card" on page 63. 3. See "Removing the PC and ExpressCard dummy cards" on page 63. 4. See "Removing the Lower Cover" on page 64. 5. See "Removing the Secondary HDD Cover" on page 65 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 101
20. Disconnect the USB cable from the main board. 21. Disconnect the Bluetooth cable from the BLUE1 connector on the main board. 22. Disconnect the speaker cable from the SPKR1 on the main board. 23. Remove the four screws (C) holding the main board. Step 1~4 Size (Quantity) M2 x L4 (4) Color - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 102
)" on page 77. 16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. See "Separating the Upper Case from the Lower Case" on page 84. 20. See "Removing the Main Board" on page 90. 21. Detach - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 103
16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. See "Separating the Upper Case from the Lower Case" on page 84. 20. See "Removing the Main Board" on page 90. 21. Remove the tape securing - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 104
)" on page 77. 16. See "Removing the Middle Cover and the Power Board" on page 78. 17. See "Removing the Keyboard" on page 80. 18. See "Removing the LCD Module" on page 81. 19. See "Separating the Upper Case from the Lower Case" on page 84. 20. See "Removing the Main Board" on page 90. 94 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 105
21. Remove the one screw (C) securing the USB board to the lower case. Step 1 Size (Quantity) M2 x L4 (1) Color Silver 22. Remove the USB Board from the lower case. Torque 1.6 kgf-cm Chapter 3 95 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 106
DISASSEMBLY LCD MODULE Ax8 LCD BEZEL Ax2 LCD ASSEMBLY Ax1 INVERTER BOARD LCD FPC CABLE Fx2 Fx2 LEFT LCD RIGHT LCD BRACKET BRACKET Ex 1 LEFT HINGE Ex1 RIGHT HINGE LCD BACK PANEL Main Screw List Item A E F ANTENNAS INTERNAL MICROPHONE VGA CAMERA Screw M2.5 x L6 M2.5 x L5 M2 x L3 Part No - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 107
Removing the LCD Bezel 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See "Removing the Middle Cover and the Power Board" on page 78. 5. See "Removing the LCD Module" on page 81. 6. Remove the four - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 108
to remove the bezel. Removing the LCD module with the Brackets 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See "Removing the Middle Cover and the Power Board" on page 78. 5. See "Removing the LCD - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 109
M2.5 x L6 (3) Color Black 9. Detach the LCD with the brackets from the back cover. Torque 3.0 kgf-cm Removing the Inverter Board and FPC Cable 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 110
from the LCD panel. Removing the LCD Brackets 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See "Removing the Middle Cover and the Power Board" on page 78. 5. See "Removing the LCD Module" on - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 111
the left and right hinge from the back cover. Torque 2.5 kgf-cm Removing the Antennas 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See "Removing the Middle Cover and the Power Board" on page 78 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 112
back cover. Removing the Internal Microphone and Web Camera 1. See "Removing the Battery Pack" on page 62. 2. See "Removing the Lower Cover" on page 64. 3. See "Removing the WLAN Board Modules" on page 68. 4. See "Removing the Middle Cover and the Power Board" on page 78. 5. See "Removing the LCD - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 113
7. See "Removing the LCD module with the Brackets" on page 98. 8. See "Removing the Left and Right Hinge" on page 101. 9. See "Removing the Antennas" on page 101. 10. Remove the tape holding the internal microphone in place. 11. Remove the internal microphone from the back cover. 12. Remove the Web - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 114
104 Chapter 3 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 115
Chapter 4 Troubleshooting Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test only 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 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 116
Follow the instructions in the message window. If an error occurs, reconnect the connector on the System board. If the error still remains: 1. Reconnect the external diskette drive/CD-ROM module. 2. Replace the external diskette drive/CD-ROM module. 3. Replace the main board. Keyboard or Auxiliary - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 117
error messages on the screen, or hang the system. 1. Boot from the diagnostics diskette and start the diagnostic program (please refer to main board. 2. Go to the diagnostic memory in the test items. 3. Press F2 in the test items. 4. Follow the instructions in the message window. NOTE: Make sure - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 118
If the voltage is within the range, do the following: K Replace the System board. K If the problem is not corrected, see "Undetermined Problems" on page 124. K If the voltage is not correct, go to the next the operational charge does not work, see "Check the Battery Pack" on page 109. 108 Chapter 4 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 119
. 3. Replace the system board. After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem. No service actions are necessary if the - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 120
, put the original part back in the computer. Do not replace a non-defective FRU. This index can also help you determine the next possible FRU to be replaced when servicing a computer. If the symptom is not listed, see "Undetermined Problems" on page 124. The following lists the error messages - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 121
: nnnn Extended RAM Failed at offset: nnnn System battery is dead - Replace and run Setup System CMOS checksum bad - Default configuration used FRU/Action in Sequence Reconnect hard disk drive connector. "Load Default Settings" in BIOS Setup Utility. Hard disk drive System board see "Keyboard or - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 122
error Previous boot incomplete - Default configuration used Memory size found by POST differed from CMOS Diskette battery System board DIMM BIOS ROM System board None BIOS ROM System board Run "Load Default Settings" in BIOS Setup Utility. RTC battery System board Enter Setup and see if fixed disk - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 123
beep, power-on indicator turns on and LCD is blank. Power source (battery pack and power adapter). See "Power System Check" on page 107.. Reconnect the LCD connector Hard disk drive LCD inverter ID LCD cable LCD Inverter LCD System board No beep, power-on indicator turns on and LCD is blank. But - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 124
initialization Reset Programmable Interrupt Controller Test DRAM refresh Test 8742 Keyboard Controller Set ES segment register to 4 GB Enable A20 line Autosize DRAM Initialize POST Memory Manager Clear 215 KB base RAM RAM failure on address line xxxx RAM failure on data bits xxxx of low byte of - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 125
type and speed Initialize EISA board Test keyboard Set key click if enabled Test for unexpected interrupts Initialize POST display service Display prompt "Press F2 to enter SETUP" Disable CPU cache Test RAM between 512 and 640 KB Test extended memory Test extended memory address lines Jump to User - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 126
PS/2 mouse Initialize floppy controller Determine number of ATA drives (optional) Initialize hard-disk controllers Initialize local-bus hard-disk controllers Jump to UserPatch2 Build MPTABLE for multi-processor boards Install CD ROM for boot Clear huge ES segment register Fixup Multi Processor table - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 127
parity checkers Display MultiBoot menu Clear screen (optional) Check virus and backup recovery boot Checksum BIOS ROM Go to BIOS Set Huge Segment Initialize Multi Processor Initialize OEM special code Initialize PIC and DMA Initialize Memory type Initialize Memory size Shadow Boot Block System memory - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 128
Code F5h F6h F7h Beeps Boot to Mini DOS Clear Huge Segment Boot to Full DOS 118 Chapter 4 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 129
the LCD connectors. Keyboard (if contrast and brightness function key doesn't work). LCD inverter ID LCD cable LCD inverter LCD System board Reconnect the LCD connector LCD inverter ID LCD cable LCD inverter LCD System board LCD inverter ID LCD inverter LCD cable LCD System board Indicator - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 130
if the computer enters hibernation mode. and four short beeps every minute. Touchpad Keyboard Hard disk connection board Hard disk drive System board The system doesn't enter standby mode after closing the LCD See "Save to Disk (S4)" on page 39. LCD cover switch System board 120 Chapter 4 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 131
the LCD. Battery fuel gauge in Windows doesn't go higher than 90%. System hangs intermittently. Action in Sequence See "Save to Disk (S4)" on page 39. Hard disk connection board Hard disk drive System board See "Save to Disk (S4)" on page 39. LCD cover switch System board Remove battery pack - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 132
. Touchpad board System board Modem-Related Symptoms Symptom / Error Action in Sequence Internal modem does not work correctly. Modem phone port modem combo board System board NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 133
, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists. When analyzing an intermittent problem, do the following: 1. Run the advanced diagnostic test for the system board in loop mode at least 10 times. 2. If no error is detected, do - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 134
-off the computer. 2. Visually check them for damage. If any problems are found, replace the FRU. 3. Remove or disconnect all of the following devices: K Non-Acer devices K Printer, mouse, and other external devices K Battery pack K Hard disk drive K DIMM K CD-ROM/Diskette drive Module K PC Cards - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 135
Jumper and Connector Locations Top View Chapter 5 No. Description 1 Power Cable Connector 2 LCD Cable Connector 3 Touchpad Board Connector 4 Keyboard Connector No. Description 5 Fingerprint/Touchpad Connector 6 Bluetooth Connector 7 Speaker Connector Chapter 5 125 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 136
Bottom View No. Description 1 CPU 2 SATA Connector 3 PC Card Reader 4 LAN Connector 5 CRT Connector 6 1394 Connector 126 No. Description 7 USB Connector 8 Card Reader 9 Line-out jack 10 Mic-in jack 11 Headphone jack Chapter 5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 137
Recovery: Fn+ESC, then Power Button. To use this function, it is strongly recommended that the AC adapter is connected to the system and plug-in to a wall outlet and the Battery password are all cleared. 3. Restore BIOS by the Crisis Disk Enable this function by pressing the combination: Fn+ESC, and - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 138
followings: a. Prepare the Crisis Disk in WinXP. b. Insert the Crisis Disk to a USB floppy drive which is attached to the failed machine. c. While the system is turned off, press and hold Fn+ESC, then press Power Button. The system should be powered on with Crisis Recovery process. d. BootBlock BIOS - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 139
configurations of TravelMate 5710/5310 and Extensa 5610/5210. Refer to this chapter whenever ordering for parts to repair or for RMA (Return part number change is made, it will not be noted on the printed Service Guide. For ACER AUTHORIZED SERVICE PROVIDERS, your Acer office may have a DIFFERENT part - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 140
7320 Exploded Diagram TravelMate 7720/7320 FRU List Category No. Adapter Battery- Part Name and Description ADAPTER 90W DELTA ADP-90SB BBDAR ADAPTER 90W DELTA ADP-90SB BBEA LF ADAPTER 90W LITEON PA-190004WR ADAPTER 90W LITEON PA-190024AR Acer Part No. AP.09001.010 AP.09001.013 AP.09003.005 AP - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 141
PACK LI+ 8CELL 2.4MAH PANASONIC BATTERY PACK LI+ 8CELL 2.4MAH SIMPLO RTC BATTERY COIN BATTERY CR2032 MITSUBISHI Acer Part No. BT.00603.029 BT.00604.015 BT.00605.014 BT.00607.008 BT.00803.022 BT.00804.019 BT.00805.010 BT.00807.013 23.TCZV1.004 WIRELESS LAN BOARD 802.11ABG INTEL 3945 MW1 WIRELESS - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 142
Name and Description FINGER PRINT BOARD CABLE Acer Part No. 50.TK901.001 TOUCHPAD CABLE 50.TK901.002 LAUNCH BOARD CABLE POWER BOARD CABLE BLUETOOTH CABLE MODEM CABLE 50.TK901.003 50.TK901.004 50.TK901.005 50.TK901.006 USB BOARD CABLE DC-IN CABLE COVER SWITCH CABLE LCD CABLE 15.4" 50.TK901 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 143
Category Case/Cover/Bracket/Assembly No. Part Name and Description Acer Part No. POWER CORD 10A 125V CORD 250V 10A 3PIN ISRAEL 27.01518.761 VGA BOARD BRACKET MXM BRACKET ASSEMBLY TOUCH PAD BRACKET ASSEMBLY PCMCIA DUMMY CARD MIDDLE COVER ASSEMBLY NEW CARD DUMMY CARD SD DUMMY CARD LOWER CASE - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 144
L-CASE DOOR ASSEMBLY OPTICAL BRACKET COMBO BEZEL DVD-RW BEZEL HDD BRACKET ASSEMBLY LCD BRACKET RIGHT LCD BRACKET LEFT LCD COVER 15.4" W/ HINGE & LOGO LCD BEZEL 15.4" W/ LOGO FOR CCD HINGE PACK LEFT/RIGHT SPEAKER Acer Part No. 60.TKC01.002 60.TK901.003 33.TK901.002 42.TK901.002 42.TK501 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 145
Category DVD-RW Drive DVD Module Fan No. Part Name and Description Acer Part No. CPU MEROM T5500 1.66GHZ INTEL PGA KC.55L01.DTP CPU MEROM T5600 1.83GHZ .010 KU.0080D.027 15" FAN FORCECON 23.TK901.001 Heatsink HDD/Hard Disk Drive CPU HEATSINK W/SCREW W/O FAN 60.TKA01.002 Chapter 6 135 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 146
Category Keyboard 136 No. Part Name and Description HDD 80GB 5400RPM SATA SEAGATE ST980811AS VENUS LF HDD 80GB 5400RPM SATA HGST HTS541680J9SA00 SURUGA-B LF HDD 80GB 5400RPM SATA WD WD800BEVS-22RST0ML80 LF Acer Part No. KH.08001.030 KH.08007.021 KH.08008.033 HDD 120GB 5400RPM SATA SEAGATE - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 147
14_15KB-EV2 89KS BLACK CANADIAN (BIG ERGO) DARFON KEYBOARD 14_15KB-EV2 89KS BLACK BRAZILIAN PORTUGUESE (BIG ERGO) DARFON KEYBOARD 14_15KB-EV2 89KS BLACK BELGIUM (BIG ERGO) DARFON KEYBOARD 14_15KB-EV2 88KS BLACK ARABIC/ENGLISH (BIG ERGO) DARFON Acer Part No. KB.INT00.018 KB.INT00.019 KB.INT00 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 148
Category No. Part Name and Description Acer Part No. LCD 15.4" WXGA AU B154EW02-V1 GLARE LK.15405.014 LCD 15.4" WXGA LG LP154WX4TLC2 GLARE LK.15408.028 Camera Communication Module Microphone Main Board PCMCIA Slot/PC Card Slot Memory Miscellaneous 138 CAMERA CMOS 0.3M BISON BN30V4O717300 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 149
and Description NAME PLATE TM5310 LCD SCREW RUBBER SCREW M2 x L3 (WHITE) SCREW M2.5 x L6 NYLOK CR3+ SCREW M2.5 x L8 NYLOK CR3+ SCREW M2.5 x 5 NI SCREW MACH WAFER M3 x L4 NI SCREW M2.5 x L5 BLACK ZN+NYLOK SCREW DIMM COVER STEEL SCREW M2 x 4 WAFER NI SCREW NI M2 x L6 Acer Part No. 40.TK601.001 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 150
Series Appendix A Model RO AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi AS505 AAP 1ANW XMi Country India Indonesia Malaysia Philippines Singapore Thailand Vietnam Acer Part 5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 151
Zealand USA/ Canada ACLASpanish USA/ Canada Indonesia Malaysia Philippines Acer Part no Descriptio n CPU LX.AV 30J.00 1 AS5051AW XMi 305.00 2 AS5051AW XMi XPHPH1 UMAC 1*512/120/ 6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 152
TWN 5WXM i AS505 China 1AWX Ci AS505 China 1AWX Ci Country Acer Part no Descriptio n CPU Thailand LX.AV 305.00 4 AS5051AW XMi LX.AV 305.01 5 AS5051AW XCi XPHSC7 UMAC 1*512/120/ 6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 N WXGA MBII5 G N120 NSM8 GB5.4 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 153
GCTWN GCTWN Australia/ New Zealand Singapore India Indonesia Philippines Malaysia Acer Part no Descriptio n CPU LX.AV 305.01 2 AS5051AW XMi AV 30J.01 6 AS5051AW XMi MCEMA1 UMAC 1*1G/120/ 6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 N WXGA MBII5 G N120 NSM8 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 154
/ New Zealand Australia/ New Zealand India Indonesia Singapore Philippines Malaysia Acer Part no Descriptio n CPU LX.AV 30J.01 7 AS5051AW XMi 30J.00 8 AS5052WX Mi MCEMA1 UMAC 1*1G/120/ 6L/5R/ CB_bg_0.3 C_AN ATTL5 0 LCD DIMM 1 N14.1 SO1G WXGA BII6 G N14.1 SO1G WXGA BII6 G N14.1 SO1G WXGA - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 155
Vietnam Australia/ New Zealand India Vietnam Thailand Singapore India Indonesia Acer Part no Descriptio n CPU LX.AV 30J.00 9 AS5052WX Mi AV 30C.0 10 AS5051AN WXMi LINPUSIN1 UMAC 1*512/60/ 6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM 1 2 N14.1 SO1G N WXGA BII6 G N14.1 SO1G N WXGA BII6 G - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 156
Philippines Malaysia Thailand Thailand Belgium Middle East Middle East Italy Spain Acer Part no Descriptio n CPU LX.AV 30C.0 11 AS5051AN WXMi AV 30J.03 9 AS5051AW XMi MCEESJ UMAC 2*512/100/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 N WXGA MBII5 G N60G NSM8 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 157
Europe Denmark France Germany Germany Holland Norway Russia Eastern Europe Acer Part no Descriptio n CPU LX.AV 30J.03 0 AS5051AW XMi AV 30J.03 6 AS5051AW XMi MCEPL7 UMAC 2*512/100/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N100 NSM8 WXGA MBII6 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 158
AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Slovenia/ Croatia LX.AV 30J.03 7 AS5051AW 30J.03 1 AS5051AW XMi MCEWDE1 1W UMAC 2*512/100/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N100 NSM8 WXGA MBII6 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 159
France Belgium Middle East Eastern Europe Germany Greece Israel Italy Denmark Acer Part no Descriptio n CPU LX.AV 30J.02 6 AS5051AW XMi AV 305.01 8 AS5051AW XMi XPHDK1 UMAC 2*512/100/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N100 NSM8 WXGA MBII6 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 160
AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Holland LX.AV 305.02 0 AS5051AW XMi AV 305.03 6 AS5051AW XMi XPHTR1 UMAC 2*512/100/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N100 NSM8 WXGA MBII6 MBII6 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 161
Russia Sweden/ Finland France Italy UK UK USA/ Canada Canadian French Acer Part no Descriptio n CPU LX.AV 305.01 7 AS5051AW XMi XPHSA1 30J.02 0 AS5052WX Mi MCECF UMAC 2*512/120/ 6L/5R/ CB_bg_0.3 C_AN ATTL5 0 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N100 NSM8 WXGA MBII6 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 162
/ New Zealand Malaysia Malaysia Sweden/ Finland Slovenia/ Croatia Holland Acer Part no Descriptio n CPU LX.AV 30J.02 1 AS5052WX Mi 05 1 AS5051AW XMi MCENL6 UMAC 1*512/100/ BT/6L/5R/ CB_bg_VP _0.3C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 163
Sweden/ Finland Slovenia/ Croatia Thailand Thailand Middle East Middle East Acer Part no Descriptio n CPU LX.AV 30J.05 2 AS5051AW XMi AS5051AN WXMi LINPUSAR 9 UMAC 1*512/60/ BT/6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM 1 2 N14.1 SO512 N WXGA MBII6 G N14.1 SO512 N WXGA MBII6 N14 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 164
AS505 TWN 2WXM i AS505 TWN 2WXM i AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Middle East LX.AV 30C.0 20 AS5051AN WXMi 30J.05 9 AS5051AW XMi MCESW8 UMAC 2*512/120/ BT/6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 N WXGA MBII5 N60G NSM8 B5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 165
EMEA 1AWX Mi AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Switzerland LX.AV 30J.06 0 AS5051AW XMi .AV 30J.07 9 AS5051AW XMi MCECS5 UMAC 2*512/120/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 166
AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Holland LX.AV 30J.06 9 AS5051AW XMi .AV 30J.08 6 AS5051AW XMi MCESW8 UMAC 2*512/120/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 167
Eastern Europe Sweden/ Finland UK UK Turkey Italy UK France Germany Acer Part no Descriptio n CPU LX.AV 30J.06 8 AS5051AW XMi MCEPL7 30J.07 8 AS5051AW XMi MCEWDE1 1W UMAC 2*512/120/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 168
Germany Middle East Denmark Belgium Eastern Europe UK UK Eastern Europe Spain Acer Part no Descriptio n CPU LX.AV 305.05 7 AS5051AW XMi AV 305.05 9 AS5051AW XMi XPHESA UMAC 2*512/120/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 169
Greece Israel France Italy Eastern Europe Holland Malaysia Norway South Africa Acer Part no Descriptio n CPU LX.AV 305.05 4 AS5051AW XMi AV 305.06 2 AS5051AW XMi XPHSA1 UMAC 2*512/120/ 6L/ 5R_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 170
EMEA 1AWX Mi AS505 EMEA 1ANW XMi AS505 EMEA 1AWX Mi Country Acer Part no Descriptio n CPU Russia LX.AV 305.04 9 AS5051AW XMi AV 305.07 1 AS5051AW XMi XPHTR1 UMAC 1*512/60/ 6L/5R/ CB_bg_0.3 C_AN ATMK 36 LCD DIMM DIMM HDD 1 1 2 (GB) ODD N14.1 SO512 SO512 N120 NSM8 WXGA MBII5 MBII5 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 171
Model RO AS505 AAP 2NWX Mi Country India Acer Part no LX.AV 30C.0 26 Descriptio n AS5052N WXMi LINPUSIL1 UMAC 1*512/80/ BT/6L/5R/ CB_bg_0.3 C_AN CPU ATTL5 0 LCD DIMM DIMM 1 2 N14.1 SO512 N WXGA MBII5 G HDD 1 (GB) N80G B5.4K ODD NSM8 X Wirele ss LAN Blueto oth VOIP Phone ABT_ FOX_ N - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 172
Appendix A 162 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 173
® XP Home, Windows® XP Pro environment. Refer to the following lists for components, adapter cards, and peripherals which have passed these tests. Regarding configuration, combination and test procedures, please refer to the TravelMate 7720/7320 Series Compatibility Test Report released by the Acer - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 174
Microsoft® Windows® Vista Environment Test CRT Port Test CRT Monitor Item LCD Monitor Projector USB Port Test USB Keyboard/Mouse USB Speaker/Joystick USB Storage Drive USB Camera USB HUB and Others USB Printer/Scanner USB Flash Drive USB HDD Device Name Acer 211c 21", ViewSonic G220F, - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 175
Point 802.11b Access Point 802.11g Access Point 802.11n Bluetooth Test Bluetooth Device PCMCIA Test LAN/Modem Card Storage Card 1394 Card USB2.0 6820 LG DVD+R/RW 16X Sony DVD+R/RW 16X Transcend 2.5" Portable 80GB Hard Disk Sony DV-TRV10 ATEN FireWire Expansion HUB 6-Port IEEE 1394 Hub (FH-600 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 176
) SD Card Apacer 128/256MB Transcend 256MB SanDisk 256MB Apacer 2GB (150x Hi-Speed) KINGMAX 1GB (66x Hi-Speed) SanDisk 1GB RiDATA 4GB SD PRO Memory Card MS Card I-O DATA 64MB MS Apacer 128MB MS Sony 512 MS PRO Lexar 512MB MS PRO Lexar 1GB MS PRO SanDisk 1GB MS PRO - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 177
valuable support resources whenever you need them. In the Technical Information section you can download information on all of Acer's Notebook, Desktop and Server models including: K Service guides for all models K User's manuals K Training materials K Bios updates K Software utilities K Spare parts - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 178
168 Appendix C - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 179
33 Heatsink Module 74 Hibernation mode hotkey 15 Hot Keys 13 I Indicators 9 Intermittent Problems 123 internal mic and web camera 102 inverter board 99 J Jumper and Connector Locations 125 Top View 125 K Keyboard 37, 80 Keyboard or Auxiliary Input Device Check 106 L Launch Board 86 LCD Bezel 97 169 - Acer TravelMate 7720 | TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 180
Flowchart 96 LCD with the Brackets 98 lower cover 64 M Main Unit Disassembly Flowchart 73 Mainboard 90 media access on indicator 10 Memory Check 107 Middle Cover and Power Board 78 Model Definition 140 Modem Board 73 N Notebook Manager hotkey 15 num lock on indicator 10 O Online Support Information