Acer 7740G manual Chapter

Page 106

	Code		Beeps	POST Routine Description

B9h				Prepare Boot

BAh				Initialize DMI parameters

BBh				Initialize PnP Option ROMs

BCh				Clear parity checkers

BDh				Display MultiBoot menu

BEh				Clear screen (optional)

BFh				Check virus and backup reminders

C0h				Try to boot with INT 19

C1h				Initialize POST Error Manager (PEM)

C2h				Initialize error logging

C3h				Initialize error display function

C4h				Initialize system error handler

C5h				PnPnd dual CMOS (optional)

C6h				Initialize notebook docking (optional)

C7h				Initialize notebook docking late

C8h				Force check (optional)

C9h				Extended checksum (optional)

D2h				Unknown interrupt

E0h				Initialize the chipset

E1h				Initialize the bridge

E2h				Initialize the CPU

E3h				Initialize the system timer

E4h				Initialize system I/O

E5h				Check force recovery boot

E6h				Checksum BIOS ROM

E7h				Go to BIOS

E8h				Set Huge Segment

E9h				Initialize Multi Processor

EAh				Initialize OEM special code

EBh				Initialize PIC and DMA

ECh				Initialize Memory type

EDh				Initialize Memory size

EEh				Shadow Boot Block

EFh				System memory test

F0h				Initialize interrupt vectors

F1h				Initialize Run Time Clock

F2h				Initialize video

F3h				Initialize System Management Mode

F4h		1		Output one beep before boot

F5h				Boot to Mini DOS

F6h				Clear Huge Segment

F7h				Boot to Full DOS

100

Chapter 4

Image 106

Contents Aspire 7740 and 7740G Series Service Guide Revision History Copyright Procedures Gives precautionary measures toProblems Following conventions are used in this manualPreface Page Table of Contents FRU Field Replaceable Unit List 113 Chapter FeaturesBelow is a brief summary of the computer’s many features Aspect ratio 17.3 HD+ 1600 x103-/104-/107-key keyboard Touchpad pointing device 1024*768 800*600Integrated Acer Crystal Eye webcam Environment System Block Diagram Your Acer Notebook tour Top ViewHotkeys Rear View Closed Front ViewRight View Indicates when the hard disk drive is active IndicatorsComputer has several easy-to-read status indicators Easy-Launch ButtonsLock Keys and numeric keypad Using the KeyboardF12 Special Key only for certain models Windows KeysOpen a text editor or word processor Chapter Windows Mobility Center Using the System Utilities Acer GridVista dual-display compatibleChapter CPU Fan True Value Table Hardware Specifications and ConfigurationsProcessor System MemoryMemory Combinations Bluetooth InterfaceWireless Module 802.11b/g/n LAN ModuleOptical Disc Drive Hard Disk DriveVendor & model name US & US+ RW DVD Blu-Ray Disc DriveAudio Controller Realtek ALC669X DVD-RW Non Cprm & Cprm DVD+/-R Dual Blu-RayAudio Interface Yes/2.1 2W speakersSystem Board Major Chips BatteryVideo Memory KeyboardAC Adaptor System Power ManagementInput 100-240V~ 1.5A, 50-60Hz Output 19V, 65W/90W, 2-pin Chapter Bios Setup Utility System UtilitiesNavigating the Bios Utility Information Parameter DescriptionMain Parameter Description Format/OptionSecurity Clear or SetSetting a Password Page Boot Exit Bios Flash Utility This section teaches you how to remove HDD password Remove HDD PasswordRemove HDD Password Chapter Machine Disassembly and Replacement Disassembly RequirementsGeneral Information Pre-disassembly InstructionsDisassembly Process Main Screw ListExternal Module Disassembly Process External Modules Disassembly FlowchartRemoving the Battery Pack Removing the Optical Drive Module Removing the Back Cover Removing the Hard Disk Drive Module Pry loose and carefully lift and remove the back coverRemoving the Wireless LAN Card M2 x L4 Silver Kgf-cm 86.9A552.4R0 Remove the wireless LAN card Removing the Dimm ModuleRemove the Dimm modules Chapter Main Unit Disassembly Process Removing the Heatsink Module Chapter Removing the CPU Chapter Removing the Middle Cover Removing the KeyboardChapter Removing the LCD Module Chapter Remove the four screws B from the left and right hinges Separating the Upper Case from the Lower Case Carefully remove the LCD module from the base unitPage Size Quantity Color Torque Removing the Touchpad and Button Boards Gently lift and detach the upper case from the lower caseChapter Page Size Quantity Color Torque Page Removing the Left Speaker Detach the touchpad board from the upper caseRemoving the USB Board Module Remove the left speaker from the upper boardM2.5 x L4 Black Kgf-cm 86.00H59.734 Chapter Remove the USB board module from the lower case Chapter Removing the Modem Board Removing the Bluetooth Module Removing the Microphone Page Removing the Main Board Remove the microphone from the systemPage Remove the one screw G securing the main board in place Removing the Right Speaker Remove the right speaker from the lower case LCD Module Disassembly Process Removing the LCD Bezel Removing the LCD panel with the Brackets Detach the webcam cable from the webcam module Page Removing the LCD Brackets Removing the FPC Cable Removing the Web Camera Page Removing the Antennas Symptoms Verified Go To Power-On Self-Test Post ErrorExternal Optical Disk Drive Check System Check ProceduresExternal Diskette Drive Check Keyboard or Auxiliary Input Device CheckPower System Check Memory CheckPower-On Self-Test Post Error Message Touchpad CheckIndex of Error Messages Error Code List Error Codes Error MessagesSystem board Extended RAM Failed at offset nnnn Error Message List Error Messages FRU/Action in SequenceSystem board System RAM Failed at offset nnnn System board DMA Test FailedFail-Safe Timer NMI Failed Fixed Disk n None Invalid System Configuration DataBlinking cursor shown on LCD during System board Phoenix Bios Beep Codes Code Beeps Post Routine DescriptionSetup Code Beeps Post Routine Description 100 Chapter LCD-Related Symptoms Symptom / Error Action in Sequence Index of Symptom-to-FRU Error MessagePower-Related Symptoms Symptom / Error Action in Sequence Speaker-Related Symptoms Symptom / Error Action in Sequence PCMCIA-Related Symptoms Symptom / Error Action in SequenceMemory-Related Symptoms Symptom / Error Action in Sequence Symptom / Error Action in SequencePage Undetermined Problems Intermittent ProblemsModem-Related Symptoms Symptom / Error Action in Sequence Main Board Code ConnectorChapter 105 Optical disk drive connector Heatsink fan cable connectorDC-in cable connector HDD1 connectorClearing Password Check and Bios Recovery Gap name in Aspire 7740/7740G Series is G29Bios Recovery by Crisis Disk Page 110 Chapter Page 112 Chapter FRU Field Replaceable Unit List Exploded Diagram Aspire 7740/7740G Series FRU List Aceraspire 7740 UMACBKJV70CP no LX.PLY02.025/44Cables CASE/COVER/BRACKET Combo Module Heatsink Keyboard Standard Black Texture Russian Mainboard Speaker 124 Chapter Appendix a Appendix a 125Aspire 7740/7740G Series Appendix a 126Appendix a 127 NBDCB4XS128 Appendix a Appendix a 129 130 Appendix a Appendix a 131 132 Appendix a Appendix a 133 134 Appendix a Appendix a 135 136 Appendix a Appendix a 137 138 Appendix a Appendix a 139 140 Appendix a Appendix a 141 142 Appendix a 143 Appendix a Appendix a 144 145 Appendix a Appendix a 146 Test Compatible Components Appendix BAccess Point Hardware Device TestsDevice name Vendor Wireless Printer Appendix B 149150 Online Support Information Appendix C152 Index LCD bezel removing 80 LCD Brackets removing

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