Keyboard Failure | Acer 4253G instruction

Keyboard Failure

If the Keyboard fails, perform the following:

	START
	Keyboard FPC	No	Connect
	well connected?	No	it well
	well connected?		it well
	Keyboard OK?	No	Replace
	Keyboard OK?	No	keyboard
			keyboard
	Replace M/B

Figure 4-4. Keyboard Failure

4-8	Troubleshooting

Image 136

Acer 4253G manual Keyboard Failure

Contents

Serviceguide Revision History Server has been stopped General information Chapter System Utilities Machine Maintenance Procedures Troubleshooting FRU Field Replaceable Unit List Page Chapter Features Page Page Features Storage Subsystem GraphicsPrivacy Control Dimension and Weight Power Adapter and BatteryOptical Media Drive Communication Warranty Special Keys and ControlsPorts Optional Items Software Top View Icon Description Top View Icon Description Closed Front View Icon Description Hardware Specifications and Configurations Left View Icon Description Right View Icon Description Base View Icon Description Touchpad Basics Function Main Touchpad Left Button Right Button Using the Keyboard Lock key Description Key Description Windows KeysFunctions supported by Windows XP Hotkeys Keyboard Hotkeys Hot key Icon Function Description 10. System Block Diagram System Block Diagram Specification Tables Computer specifications Metric Imperial CPU FSB DMI/QBI System Memory Specification Bios Video Interface SpecificationMemory Combinations Slot 1 MB Slot 2 MB Total Memory MB LAN Interface Specification Keyboard Specification Hard Disk Drive AVL components Specification RPM8MB Sata WD6400BPVT WD5000BPVT MK7559GSXP WD7500BPVT Super-Multi Drive Specification DVD-RW, DVD+RW, DVD-R 4.7G DVD-R9, DVD-RAM4.7GDVD-ROM DVD+RW DVD-R DL, DVD-R 3.95 GB, DVD-R DVD-RAM DVD+R, DVD+R DL, DVD+R LED Specification LCD Inverter not available with this model SpecificationLG LP140WH1 LG LP140WH4 Graphics Controller Specification Bluetooth Interface SpecificationsNvidia ATI JST Bluetooth Module Specifications Mini Card Specification Camera Specification3G Card not available in this model Audio Codec and Amplifier Specification Audio Interface Specification Wireless Module 802.11b/g/n SpecificationBattery Specification PCI-E USB Port Specification Hdmi Port SpecificationAC Adapter Specification Ehci Card Reader Specification System Power Management SpecificationLqfp 48P System LED Indicator Specification System DMA Specification Legacy Mode Power Management System Interrupt Specification Hardware IRQ System Function Page CF8 CFB VGAPCIDIVO-1 Hardware Specifications and Configurations System Utilities Bios Setup Utility Bios Setup Utility Navigating the Bios Utility Bios Information Parameter Description Information Uuid Bios Main Parameter Description Format/Option Main Bios Main Parameter Description Format/Option Bios Security Parameter Description Option Security Setting a Password Changing a Password Setup Warning Invalid Password Boot 10. Bios Boot Exit Exit Parameters Description Bios Flash Utilities 12. Bios Boot DOS Flash Utility 13. DOS Flash Process WinFlash Utility 15. InsydeFlash Clearing Bios Passwords 16. Password Error Status Removing Bios Passwords 18. Cmos Jumper Description Clear Cmos Jumper Method Using DMITools Miscellaneous Tools 22. Asset Tag Menu Item 24. Serial Number Menu Item 26. Veeprom Command Prompt Using the LAN MAC Eeprom Utility 27. LAN MAC Eeprom LAM MAC Eeprom Parameter Description Crisis Disk Recovery 28. USB Flash Crisis Disk System Utilities System Utilities Machine Maintenance Procedures Page Page Page Recommended Equipment IntroductionScrew List USB Dimm Maintenance FlowchartWlan RTC Getting Started AC Adapter Outlet Battery Pack Removal Battery Pack Installation Dummy Card Installation Dummy Card Removal Keyboard Removal Keyboard Latches Keyboard Installation ODD Optical Disk Drive Module Removal ODD Module in Lower Cover ODD Module Installation Size Quantity Screw Type Lower Cover Removal Lower Cover Screw Location Lower Cover Installation 10. Lower Cover Removal Dimm Dual In-line Memory Module Module Removal 11. Component Location Dimm Module Installation Wlan Wireless Local Area Network Module Removal 13. Wlan Module Wlan Module Installation M2.5*4.0 USB Module Removal USB Module InstallationM2.5*3.0 RTC Battery Removal RTC Battery Installation Bluetooth Module Removal 17. Bluetooth Module Bluetooth Module Installation 19. Bluetooth Module Thermal Module Removal 20. Thermal Module Thermal Module Installation 21. Thermal Module M2.5*3.0 Ni HDD Hard Disk Drive Module Removal 22. HDD Module Location HDD Module Installation 24. HDD Module Mainboard Removal 25. Mainboard Location Mainboard Installation 26. Mainboard LCD Liquid Crystal Display Module Removal 27. LCD Hinge Screws LCD Module Installation Speaker Removal 29. Speaker Speaker Installation LCD Bezel Removal 31. LCD Bezel LCD Bezel Installation Size Quantity Screw Type M2.5*4.0 Camera Module Removal 34. Camera Module Location Camera Module Installation LCD Panel Removal 36. LCD Panel LCD Panel Installation LCD Bracket Removal LCD Bracket InstallationM2.0*3.0 Lvds Cable Removal 39. Lvds Cable Lvds Cable Installation 41. Lvds Cable Wlan Antenna Installation Wlan Antenna Removal Troubleshooting Introduction -3 General Information Common Problems Power On Issues Power On Issue No Display Issues No Display Issue Abnormal Video LCD Failure LCD Failure Keyboard Failure Keyboard Failure Touchpad Failure Touchpad Failure Internal Speaker Failure Internal Speaker Failure Troubleshooting Microphone Failure Microphone Failure USB Failure USB Failure Other Functions Failure Intermittent Problems Undetermined Problems Post Code Range Phase Post Codes Peicpuhtreset PEI Peimemoryinstall PEIPeiswitchstack PEI Peienterrecoverymode PEI Peirecoverystartflash PEI DXECF9RESETDxesmmaccess DXE Dxesmarttimerinit DXE Bdsinstallhotkey BDS Bdsbeforepciioinstall BDSDxerelocatesmbase DXE Dxefirstsmi DXE Bdsenumerateallbootoption BDS Bdsendofbootselection BDSBdsentersetup BDS Bdsenterbootmanager BDS S3RESTOREMEMORYCONTROLLER PEI S3INSTALLS3MEMORY PEIS3SWITCHSTACK PEI S3BEFOREACPIBOOTSCRIPT PEI 10. InsydeH2ODDT Debugger Post Code Table Jumper and Connector Locations Page Mainboard Jumper and Connector Locations Mainboard Top Description Mainboard Bottom Description Clearing Password Check and Bios Recovery Clearing Password Check Bios Recovery by Crisis Disk Clear Cmos Jumper Steps for Bios Recovery from USB Storage Jumper and Connector Locations FRU Field Replaceable Unit List Exploded Diagrams FRU List Screw List FRU Field Replaceable Unit List Exploded Diagrams FRU Field Replaceable Unit List LCD Assembly Exploded Diagram Battery FRU ListFRU List Category Description Acer Part No Adapter Board Cable CASE/COVER/BRACKET Assembly DVD RW Drive DVD/RW Super Multi Sata ModuleODD Bezel Super Multi ODD Bracket Sata 8MB LF F/W0001SDM1 LF F/WGJ001JBS,MK3265GSX Sata 8MB LF F/WGJ001J WD5000BEVT-22A0RT0, ML320M,WD Sata WD6400BEVT-22A0RT0, ML320 Sata 8MB LFLF F/WGJ002J WD6400BPVT-22HXZT1, ML375M Sata 8MB Keyboard LCD LCD Module 14 LED Glare IMR W/CCDANTENNA*2 Black LCD Cover W/ ANT IMR Black LCD Bezel for CCD LCD Bracket W/ Hinge LLCD Bracket W/ Hinge R LCD Cable ANTENNA*2 RED LCD Cover W/ ANT IMR RED Mainboard Main Board UMA E350 1.6G, W/CARDREADER,MIC Main Board Seymourxt E350 1.6G Card READER,MIC Heatsink Thermal Module UMA 18WThermal Module DIS 18W Speaker Miscellaneous Screw List Model Definition and Configuration Acer 4255 -1Aspire 4253G Acer RO, Description Model Country Acer Part NoAAP W7ST32EMASID1 MC W7HB64SCASCN1 MC ChinaW7HB64EMASID1 MC W7ST32EMASEA1 MC W7HB64EMASEA1 MCW7ST32EMASTH1 MC W7ST32EMASTH3 MC W7ST32EMASTH4 MC W7HP64EMASEA1 MC CPU LCD CPU, LCD Model Country Acer Part NoAMDE350B NLED14WXGAG AS4253-E35 ACLA-Spanish LX.RDT0C.001 VGA Chip, Vram Model Country Acer Part No UMA AS4253-E35 Thailand LX.RDU0C.005 AS4253-E35 China LX.RDT0C.011 HDD 1GB Memory 1, Memory 2, HDD Model Country Acer Part NoSO1GBIII10 SO2GBIII10 SO2GBIII10 SO1GBIII10 ODD, Extra SW1, Card Reader Model Country Acer Part No ODDExtra SW1 Card Reader NSM8XS AS4253-E35 ACLA-Spanish LX.RDT01.001 AMD A50M LAN1BGN FCH AS4253-E35 Indonesia LX.RDT08.002 3rd WiFi AS4253-E35 Malaysia LX.RDT0C.012 3rd WiFi Battery, Adapter, Camera Model Country Acer Part No Battery, Adapter, Camera Model Country Acer Part No Battery, Adapter, Camera Model Country Acer Part No Aspire 4253G LINPUSATH3LINPUSATH1 LINPUSATH4 Thailand LX.RDW08.003 AS4253G-E352G50Mnkk EM LINPUSAPH1 10. VGA Chip, Vram Model Country Acer Part No Seymourxt 11. Memory 1, Memory 2, HDD Model Country Acer Part No AS4253G-E3 Thailand LX.RDX0C.001 12. ODD, Extra SW1, Card Reader Model Country Acer Part No AS4253G-E3 Philippines LX.RDW0C.004 14. Battery, Adapter, Camera Model Country Acer Part No 14. Battery, Adapter, Camera Model Country Acer Part No Model Definition and Configuration Test Compatible Components Microsoft Windows 7 Environment Test Test Compatible Components Microsoft Windows 7 Environment Test Audio Codec Card Reader CameraHDD LF+HF F/WGN003J 375G/P Sata 8MB LF LAN KeyboardMemory NB Chipset Software SB ChipsetVGA Chip WiFi Antenna Wireless LANPifa LITE-ON BGN Online Support Information Introduction Online Support Information Online Support Information