Acer 7740G manual Index of Symptom-to-FRU Error Message

Page 107

Index of Symptom-to-FRU Error Message

LCD-Related Symptoms

Symptom / Error	Action in Sequence

LCD backlight doesn't work	Enter BIOS Utility to execute “Load Setup Default Settings”,
LCD is too dark	then reboot system.
LCD brightness cannot be adjusted	Reconnect the LCD connectors.
LCD contrast cannot be adjusted	Keyboard (if contrast and brightness function key doesn't
	work).
	LCD inverter ID
	LCD cable
	LCD inverter
	LCD
	System board

Unreadable LCD screen	Reconnect the LCD connector
Missing pels in characters	LCD inverter ID
Abnormal screen	LCD cable
Wrong color displayed	LCD inverter
	LCD
	System board

LCD has extra horizontal or vertical lines	LCD inverter ID
displayed.	LCD inverter
	LCD cable
	LCD
	System board

Indicator-Related Symptoms

Symptom / Error	Action in Sequence

Indicator incorrectly remains off or on, but	Reconnect the inverter board
system runs correctly	Inverter board
	System board

Power-Related Symptoms

Symptom / Error	Action in Sequence

Power shuts down during operation	Power source (battery pack and power adapter). See “Power
	System Check” on page 91.
	Battery pack
	Power adapter
	Hard drive & battery connection board
	System board

The system doesn’t power-on.	Power source (battery pack and power adapter). See “Power
	System Check” on page 91.
	Battery pack
	Power adapter
	Hard drive & battery connection board
	System board

Chapter 4

101

Image 107

Contents Aspire 7740 and 7740G Series Service Guide Revision History Copyright Following conventions are used in this manual Gives precautionary measures toProblems ProceduresPreface Page Table of Contents FRU Field Replaceable Unit List 113 Aspect ratio 17.3 HD+ 1600 x FeaturesBelow is a brief summary of the computer’s many features ChapterIntegrated Acer Crystal Eye webcam 1024*768 800*600103-/104-/107-key keyboard Touchpad pointing device Environment System Block Diagram Top View Your Acer Notebook tourHotkeys Closed Front View Rear ViewRight View Easy-Launch Buttons IndicatorsComputer has several easy-to-read status indicators Indicates when the hard disk drive is activeF12 Using the KeyboardLock Keys and numeric keypad Open a text editor or word processor Chapter Windows KeysSpecial Key only for certain models Windows Mobility Center Acer GridVista dual-display compatible Using the System UtilitiesChapter System Memory Hardware Specifications and ConfigurationsProcessor CPU Fan True Value TableLAN Module Bluetooth InterfaceWireless Module 802.11b/g/n Memory CombinationsVendor & model name Hard Disk DriveOptical Disc Drive Blu-Ray Disc Drive US & US+ RW DVDYes/2.1 2W speakers DVD-RW Non Cprm & Cprm DVD+/-R Dual Blu-RayAudio Interface Audio Controller Realtek ALC669XKeyboard BatteryVideo Memory System Board Major ChipsInput 100-240V~ 1.5A, 50-60Hz Output 19V, 65W/90W, 2-pin System Power ManagementAC Adaptor Chapter System Utilities Bios Setup UtilityNavigating the Bios Utility Parameter Description InformationParameter Description Format/Option MainClear or Set SecuritySetting a Password Page Boot Exit Bios Flash Utility Remove HDD Password Remove HDD PasswordThis section teaches you how to remove HDD password Chapter Disassembly Requirements Machine Disassembly and ReplacementMain Screw List Pre-disassembly InstructionsDisassembly Process General InformationExternal Modules Disassembly Flowchart External Module Disassembly ProcessRemoving the Battery Pack Removing the Optical Drive Module Removing the Back Cover Pry loose and carefully lift and remove the back cover Removing the Hard Disk Drive ModuleRemoving the Wireless LAN Card M2 x L4 Silver Kgf-cm 86.9A552.4R0 Removing the Dimm Module Remove the wireless LAN cardRemove the Dimm modules Chapter Main Unit Disassembly Process Removing the Heatsink Module Chapter Removing the CPU Chapter Removing the Keyboard Removing the Middle CoverChapter Removing the LCD Module Chapter Remove the four screws B from the left and right hinges Carefully remove the LCD module from the base unit Separating the Upper Case from the Lower CasePage Size Quantity Color Torque Gently lift and detach the upper case from the lower case Removing the Touchpad and Button BoardsChapter Page Size Quantity Color Torque Page Detach the touchpad board from the upper case Removing the Left SpeakerRemove the left speaker from the upper board Removing the USB Board ModuleM2.5 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 Remove the microphone from the system Removing the Main BoardPage 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 Power-On Self-Test Post Error Symptoms Verified Go ToKeyboard or Auxiliary Input Device Check System Check ProceduresExternal Diskette Drive Check External Optical Disk Drive CheckMemory Check Power System CheckTouchpad Check Power-On Self-Test Post Error MessageError Code List Error Codes Error Messages Index of Error MessagesSystem board DMA Test Failed Error Message List Error Messages FRU/Action in SequenceSystem board System RAM Failed at offset nnnn System board Extended RAM Failed at offset nnnnFixed Disk n None Invalid System Configuration Data Fail-Safe Timer NMI FailedBlinking cursor shown on LCD during System board Code Beeps Post Routine Description Phoenix Bios Beep CodesSetup Code Beeps Post Routine Description 100 Chapter Power-Related Symptoms Symptom / Error Action in Sequence Index of Symptom-to-FRU Error MessageLCD-Related Symptoms Symptom / Error Action in Sequence Symptom / Error Action in Sequence PCMCIA-Related Symptoms Symptom / Error Action in SequenceMemory-Related Symptoms Symptom / Error Action in Sequence Speaker-Related Symptoms Symptom / Error Action in SequencePage Modem-Related Symptoms Symptom / Error Action in Sequence Intermittent ProblemsUndetermined Problems Chapter 105 Code ConnectorMain Board HDD1 connector Heatsink fan cable connectorDC-in cable connector Optical disk drive connectorGap name in Aspire 7740/7740G Series is G29 Clearing Password Check and Bios RecoveryBios Recovery by Crisis Disk Page 110 Chapter Page 112 Chapter FRU Field Replaceable Unit List Exploded Diagram Aceraspire 7740 UMACBKJV70CP no LX.PLY02.025/44 Aspire 7740/7740G Series FRU ListCables CASE/COVER/BRACKET Combo Module Heatsink Keyboard Standard Black Texture Russian Mainboard Speaker 124 Chapter Appendix a 125 Appendix aAppendix a 126 Aspire 7740/7740G SeriesNBDCB4XS Appendix a 127128 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 Appendix B Test Compatible ComponentsHardware Device Tests Access PointAppendix B 149 Device name Vendor Wireless Printer150 Appendix C Online Support Information152 Index LCD bezel removing 80 LCD Brackets removing

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