Acer Aspire T680 Service Manual Download Page 11

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Chapter 1

System LED Definition

System S State

Wake-Up devices supported with default setting

S1 (Idle)

Power Button : Enabled

PS/2 Keyboard : Enabled

USB Keyboard : Enabled

RTC : Disabled

LAN : Disabled

Modem (Ring) : Disabled

S3 (Suspend to RAM)

Power Button : Enabled

PS/2 Keyboard : Enabled

USB Keyboard : Enabled

LAN : Disabled

Modem (Ring) : Disabled

S4 (Suspend to Disk)

Power Button : Enabled

PS/2 Keyboard : Enabled

USB Keyboard : Disabled

RTC : Disabled

LAN : Disabled

Modem (Ring) : Disabled

S5 (Shut Down)

Power Button : Enabled

PS/2 Keyboard : Enabled

USB Keyboard : Enabled

RTC : Disabled

LAN : Disabled

Modem (Ring) : Disabled

Special Design Specifications

Item

Description

Thermal Design

Dynamic FAN speed control by hardware monitor

CPU Over-temperature (over 120

C) power off

protectio

Power On / Wake-up event

Power Button : S1/S3/S4/S5

PS/2 Keyboard : S1/S3/S4/S5

RTC : S1/ S5

LAN : S1/S3/S5

Modem (Ring) : S1/S3/S5

Summary of Contents for Aspire T680

Page 1: ...Aspire T680 AcerPower FG Service Guide PRINTED IN TAIWAN Service guide files and updates are available on the AIPG CSD web for more information please refer to http csd acer com tw ...

Page 2: ...II Revision History Please refer to the table below for the updates made on Aspire T680 AcerPower FG service guide Date Chapter Updates ...

Page 3: ...espect to the contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular purpose Any Acer Incorporated software described in this manual is sold or licensed as is Should the programs prove defective following their purchase the buyer and not Acer Incorporated its distributor or its dealer assumes the entire cost of all necessary servicing repair and ...

Page 4: ... bits and pieces of additional information related to the current topic WARNING Alerts you to any damage that might result from doing or not doing specific actions CAUTION Gives precautionary measures to avoid possible hardware or software problems IMPORTANT Reminds you to do specific actions relevant to the accomplishment of procedures ...

Page 5: ... NOT be covered in this generic service guide In such cases please contact your regional offices or the responsible personnel channel to provide you with further technical details 2 Please note WHEN ORDERING FRU PARTS that you should check the most up to date information available on your regional web or channel If for whatever reason a part number change is made it will not be noted in the printe...

Page 6: ...fications and Configurations 17 Jumper Setting 23 Connector 24 Chapter 2 System Utilities 27 Entering Setup 28 Product Information 29 Standard CMOS Features 30 Advanced BIOS Features 32 Advacned Chipset Features 38 Integrated Peripherals 39 Power Management Setup 41 Frequency Control 43 PnP PCI Configurations 44 Load Default Settings 45 PC Health Status 46 Set Supervisor User Password 47 Save Exit...

Page 7: ...U 55 Removing the System FAN 56 Removing the Power Supply 56 Removing the Mainboard 56 Chapter 4 Troubleshooting 57 Power On Self Test POST 58 POST Check Points 59 POST Error Messages List 65 Error Symptoms List 67 Chapter 5 FRU Field Replaceable Unit List 72 Exploded Diagram 73 ...

Page 8: ...15GV ICH6 Prescott Cedar Mill chipset architecture This combination can run at 800MHz Front Side Bus and provides On Board VGA and discret VGA support which provides better performance than other processors We also provide one PCI Express x16 slot three PCI slots support PCI 2 2 spec 4 Dual Channel DDR 2 memory slots support up to 4GB P ATA devices HDD ODD four S ATA devices HDDs on board 10 100 1...

Page 9: ...n D 2 53GHz 3 2GHz T L2 Cache varies with CPU from 1MB to 2MB Chipset T Northbridge Intel 915GV T Southbridge ICH6 Memory T Socket Type DDR2 1 8 Voltage T Socket Quantity 2 T Capacity support 128MB 4GB T Support Memory Speed 533 400 MHz Graphic Solution T Integrated VGA T ATI x300 x600 T nVidia 6600 Slots T 3 PCI slot T 1 PCIE 16x slot FDD T One 1 44MB 3 5 device T Allow connection of 2 FDD device...

Page 10: ...ill mute automatically T 5 1 Channel Audio Support T Reserved disable function on BIOS side Default is enabled LAN T Controller ICH6 T LAN Chip Realtek 8100S T Should be worked under 10 100 1000 Mbs environment T Reserved disabled function on both hardware BIOS side Default is enabled USB T Controller Intel ICH6 T Connectors Quantity 8 4 on rear connector 4 on board header T 2 for front daughter b...

Page 11: ...nd to Disk T Power Button Enabled T PS 2 Keyboard Enabled T USB Keyboard Disabled T RTC Disabled T LAN Disabled T Modem Ring Disabled S5 Shut Down T Power Button Enabled T PS 2 Keyboard Enabled T USB Keyboard Enabled T RTC Disabled T LAN Disabled T Modem Ring Disabled Special Design Specifications Item Description Thermal Design T Dynamic FAN speed control by hardware monitor T CPU Over temperatur...

Page 12: ...ry Slots T 1 PCI Express x16 Slot T 3 PCI Slots T 1 FDD Slot T 1 PATA IDE Slots T 4 SATA IDE Slots T 1 2 5 pin USB pin connector T 1 serial port pin connector 2nd serial port T 1 Aux In 4pin connector CD ROM Audio Input T 1 3 pin or 4 pin CPU Fan connector T 1 3 pin System FAN connector T 1 24 pin 4 pin ATX interface PS3 PS2 SPS connector T 1 2 pin LAN activity monitor connector T 2 reserved 2pin ...

Page 13: ...184P DDIMM4 DDR Socket 184P VGA G only USB2 2 ports USB1 2 ports VIA 1394 HEADER CONN SATA1 7Pin SATA2 7pin BW 6 4GB s FSB 800MHz Freq 200MHz BW 8 5GB s DDR2 400 533MHz BW 6 4GB s DDR 333 400MHz DEVICE PCI1 PCI2 LAN 1394 IDSEL 17 INT C D E F REQ PREQ 0 GNT PGNT 0 18 D E F G PREQ 1 PGNT 1 21 PREQ 4 PGNT 4 20 PREQ 3 PGNT 3 SATA3 7Pin SATA4 7pin SIZE Min 128MB ONE 256Mb X 16 Single Sided DEVICES SIZE...

Page 14: ...Chapter 1 7 MainBoard Placement ...

Page 15: ...te drive connector 7 IDE1 Primary IDE channel 8 CLR_CMOS Clear CMOS jumper 9 SATA1 4 Serial ATA connectors 10 F_PANEL1 Panel connector for case switches and LEDs 11 COM2 Onboard serial port header 12 F_USB1 2 Front Panel USB headers 13 BIOS_WP BIOS flash protect jumper 14 CDIN1 AUXIN CD in connector 15 AUDIO1 Front panel audio header 16 PCI1 3 32 bit add on card slots 17 PCIEX16 PCI Express x16 sl...

Page 16: ...ns above are for reference only The exact configuration of your PC depends on the model purchased No Description No Description 1 Optical drive 2 Floppy drive 3 Power button 4 Speaker or headphone jack 5 Microphone jack 6 USB ports Description No Description ...

Page 17: ...Panel No Description 1 Power Button 2 USB Ports 3 Microphone in out Front 4 Speaker out Line out Port 5 CD Reject Button 6 IR Receriver 7 Optical drive Door 8 3 5 inch Floppy disk drive 9 Floppy drive LED 10 Floppy drive eject button ...

Page 18: ...Panel No Description 1 6 audio jacks 7 1 HD audio jack 2 RJ45 3 USB ports 4 CRT LCD port 5 Parallel port 6 Serial port 7 PS 2 keyboard 8 PS 2 mouse 9 Power code port 10 SPDIF port 11 Recovery Switch Holder 12 Lock Handle ...

Page 19: ...s section provides a brief description of the basic system peripherals Mouse PS 2 or USB manufacturing option The included mouse is a standard two button wheel mouse Connect the mouse to the PS 2 mouse port or USB port on the back panel of the system Keyboard PS 2 or USB manufacturing option Connect the keyboard to the PS 2 keyboard port or USB port on the back panel of the system ...

Page 20: ...t the speaker cable to the audio out external speaker port on the back panel of the system For more detailed information about the speakers please refer to the included operating instructions NOTE speakers are optional and the appearance might be different depending on the actual product Note ...

Page 21: ...ms that include an optical disc burner 7 After choosing the backup method click Next Follow the instruction on screen to complete the process Restore from backup Users can restore backup previously created as stated in the Create backup section from hard drive CD or DVD 1 Boot to Windows XP 2 Press Alt F10 to open the Acer eRecovery utility 3 Enter the password to proceed The default password is s...

Page 22: ...ctions on screen to re install At first launch Acer eRecovery prepares all the needed software and may take few seconds to bring up the software content window Change Password Acer eRecovery and Acer disc to disc recovery are protected by a password that can be changed by the user Follow the steps below to change the password in Acer eRecovery 1 Boot to Windows XP 2 Press Alt F10 to open the Acer ...

Page 23: ...tion Please enter 000000 is displayed 4 Enter six zeros and continue 5 The Acer Recovery main page appears 6 Use the arrow keys to scroll through the items operating system versions and press Enter to select Multilingual operating system installation Follow the instructions to choose the operating system and language you prefer when you first power on the system 1 Turn on the system 2 Acer s multi...

Page 24: ... Type Intel Pentium 4 processor 775 Land Grid Array LGA Slot Socket T LGA 775 Speed Depends on CPU which is local configured Bus Frequency 533 800 MHz Voltage Processor voltage can be detected by any system without setting any jumper BIOS Item Specification BIOS code programmer Award BIOS version N A BIOS ROM size 3MB BIOS ROM package 32 pin PLCC package Support protocol PCIX 1 0 PCI 2 2 APM 1 2 V...

Page 25: ...fication First Level Cache Configurations Cache function control Enable Disable by BIOS Setup Second Level Cache Configurations The information below is only applicable to system installed with a Pentium 4 processor Tag RAM Location On Processor L2 Cache RAM Location On Processor L2 Cache RAM type PBSRAM Pipelined burst Synchronous RAM L2 Cache RAM size Depends on CPU which is local configured L2 ...

Page 26: ... Control Enable Disable by BIOS Setup Serial Port Item Specification Serial port controller ICH6 Serial port controller resident bus LPC Bus Number of serial port 1 Serial port location COM1 16550 UART support Yes Connector type 9 pin D type female connector USB Port Item Specification Universal HCI USB 2 0 Controller ICH6 Number of the connectors 4 Location Rear 2 On board header 2 USB Class Supp...

Page 27: ...F 32 KB I O Expansion ROM Reserved for ROM on I O Adapters 00D0000 00D3FFF 16 KB I O Expansion ROM Reserved for ROM on I O Adapters 00D4000 00D7FFF 16 KB I O Expansion ROM Reserved for ROM on I O Adapters 00D8000 00DBFFF 16 KB I O Expansion ROM Reserved for ROM on I O Adapters 00DC000 00DFFFF 16 KB I O Expansion ROM Reserved for ROM on I O Adapters 00E0000 00E7FFF 32 KB for SCSI BIOS Reserved for ...

Page 28: ...ary IDE Parallel Printer Port 2 Serial Asynchronous Port 2 Parallel Printer Port 1 Floppy Disk Controller Secondary IDE Primary IDE Serial Asynchronous Port 1 Configuration Address Register Configuration Data Register Parallel Printer Port 1 IRQ Assignment Map IRQx System Devices Add On Card Devices IRQ0 Timer N IRQ1 Keyboard N IRQ2 Reserved N IRQ3 Serial Port 2 Reserved IRQ4 Serial Port 1 Reserve...

Page 29: ...z 2 20g RMS random 10 minutes per axis in all 3 axes Non operating packed 5 500Hz 1 09g RMS random 1 hour per axis in all 3 axes Shock Operating Half sine 2g 11m seconds Drop Test Drop Test Definition The protection ability of packing cushion must be capable of withstanding with no physical or functional demage mechanical impact from height specific drops Test Standard Package Cross Weight Drop He...

Page 30: ...MOS Header 3 1 Clear CMOS 1 2 Normal Default 2 3 Clear CMOS NOTE Before clear the CMOS the AC power of powersupply should be removed BIOS_WP Header 3 1 Flash Protect 1 2 Flash Default 2 3 Flash Protect BIOS_TBL Header 3 1 Boot Block 1 2 Boot Block Disable 2 3 Boot Block Enable ...

Page 31: ...5V 16 PS_ON 5 COM 17 COM 6 5V 18 COM 7 COM 19 COM 8 PWR OK 20 5V 9 5VSB 21 5V 10 12V 22 5V 11 12V 23 5V 12 3 3V 24 COM Illustration Pin Signal Name 1 Ground 2 Ground 3 12V 4 12V Illustration Pin Signal Name 1 Ground Systeme Ground 2 Power 12V 3 SENSE 9 8 7 6 5 4 3 2 1 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 ...

Page 32: ...ame Pin Signal Name 1 USB DUAL VCC 2 DSB UDAL VCC 3 USBP4 4 USBP5 5 USBP4 6 USBP5 7 Ground 8 Ground 9 Key 10 USBOC45 Illustration Pin Signal Name Pin Signal Name 1 USB DUAL VCC 2 DSB UDAL VCC 3 USBP4 4 USBP5 5 USBP4 6 USBP5 7 Ground 8 Ground 9 Key 10 USBOC45 Illustration Pin Signal Name 1 CD IN Left 2 Ground 3 Ground 4 CD IN Right ...

Page 33: ...HD LED N Hard Disk active LED 4 FP PWR SLP MSG LED pull up 330ohm to 5V 5 RST SW N Reset Switch low reference pull down 100ohm to GND 6 PWR SW P Power Switch high reference pull up 10000ohm to 5V 7 RST SW P Reset Switch high reference pull up 1000ohm to 5V 8 PWR SW N Power Swtich high reference pull down 100ohm toGND 9 RSVD DUN Reserved DO NOT USE ...

Page 34: ... doesn t required users to boot to DOS before upgrading BIOS but directly download and update BIOS from the Internet NOTE Main Menu This is the online description of the highlighted setup functions is displayed at the bottom of the screen NOTE Status Page Setup Menu Option Page Setup Menu Press F1 to pop up a small help window that describes the appropriate keys to use and the possible selections ...

Page 35: ...configurations of PCI PnP ISA resources PC Health Status This setup page is the System auto detect Temperature voltage fan and speed Frequency Control This setup page is control CPU s clock and frequency ratio Set Supervisor Password Change set or disable password It allows you to limit access to the system and Setup or just to Setup Set User Password Change set or disable password It allows you t...

Page 36: ...ts the system SMBIOS version System BIOS ID This item lists the system BIOS ID BIOS Release Date This item lists the BIOS release date Product Names Aspire T680 AcerPower FG Item Help System S N Menu Level Main Board ID E915GV System BIOS Version R01 A2 SMBIOS Version 2 3 3 System BIOS ID R01 A2 BIOS Release Date 08 22 05 CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc Product Infor...

Page 37: ...d Windows Me operatin systems do not support Enhanced mode IDE Serial ATA resources for more than four devices If the ATA IDE option is set to Enhanced mode the operating installation will not be able to recognize the drive and the installation will fail Before installing 98SE or Me the ATA IDE configuration must be changed from Enhanced to Legacy mode Disabled Compatible Enhanced Date Mon 08 22 2...

Page 38: ...tem start up Manual User can manually input the correct settings Access Mode Use this to set the access mode for the hard drive the four options are CHS LBA Large Auto default Auto T Cylinder Number of cylinders T Head Number of heads T Precomp Write precomp T Landing Zone Landing Zone T Sector Number of sectors Drive A The category identifies the types of floppy disk drive A that has been install...

Page 39: ...Boot Enabled Menu Level X Configuration Table Disabled Quick Power On Self Test Enabled Boot Up NumLock Status On APIC Mode Enabled XBoot Device Priority Press Enter X Hard Disk Drives Press Enter X Removable Drives Press Enter X CD DVD Drives Press Enter Boot Other Device Enabled KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings Advanced BIOS Features CMOS Setup U...

Page 40: ...e needed to boot the system which means to quick power on self test function Enabled Disabled Boot Up NumLock Status This item defines if the keyboard Num Lock key is active when your system is started On APIC Mode This item allows you to enable or disable the APIC Advanced Programmable Interrupt Controller mode APIC provides symmetric multi processing SMP for systems allowing support for up to 60...

Page 41: ... operating system at start up time Boot Device Priority Item Help First Boot Device 1st FLOPPY DRIVE Second Boot Device HDS728080PLA380 Menu Level X Third Boot Device HL DT ST RW DVD GC 4th Boot Device Realtek Boot Agent CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings Boot Device Priority ...

Page 42: ...sk Drives Item Help 1st Drive Menu Level X CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc Hard Disk Drives KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings Hard Disk Drives ...

Page 43: ...LOPPY DRIVE 2nd Drive Generic USB SD Rea Menu Level X 3rd Drive Generic USB CF Rea 4th Drive Generic USB SM Rea Removable Drives KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc ...

Page 44: ...s CD DVD Drives Item Help 1st Drive HL DT ST RW DVD GC Menu Level X CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc CD DVD Drives KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings ...

Page 45: ...ots or is integrated on the mainboard VGA Share Memory This item shows the VGA memory size borrowed from main memory capacity Aperture Size Select This item defines the size of the aperture if you use an AGP graphics adapter The AGP aperture refers to a section of the PCI memory address range used for graphics memory We recommend that you leave this item at the default value DRAM Frequency Auto It...

Page 46: ...is option is used to assign the I O address and interrupt request IRQ for onboard serial port 1or 2 Auto BIOS will automatically setup the port 1 or 2 address 3F8 IRQ4 2F8 IRQ3 3E8 IRQ4 2E8 IRQ3 Diabled Serial Port 2 Address Parallel Port Address Use this item to enable or disable the onboard Parallel port and to assign a port address USB 2 0 Controller Enabled Item Help USB Function Enabled Legac...

Page 47: ... and ECP EPP SPP allows data output only Port ECP and Enhanced Parallel Port EPP are bi Extended Capabilities directional modes allowing both data input and output ECP and EPP modes are only supported with EPP and ECP aware peripherals SPP EPP ECP ECP EPP EPP Version Indicates the EPP version N A Parallel Port IRQ This item assigns either IRQ 5 or 7 to the parallel port N A Parameter Description O...

Page 48: ...s option defines if the video is powered down when the system is put into suspend mode Disabled Enabled HDD Power Down This option lets you specify the IDE HDD idle time before the device enters the power down state This item is independent from the power states previously described in this section Standby and Suspend Disabled 1 15 mins Soft off by PWR BTTN This feature allows users to configure t...

Page 49: ...tatus Disabled Enabled PS 2 Keyboard Wakeup Set this via keyboard to power on the system Password Enter from 15 characters to set the Keyboard Power On Password Disabled Disable this function Keyboard 98 If your keyboard have Power Key button you can press the key to power on the system PS 2 Mouse Wakeup Set this via mouse to power on the system Disabled Disable this function Double Click Double c...

Page 50: ...read Spectrun If you enable spread spectrum it can significantly reduce the EMI Elector Magnetic Interference generated by the system Enabled Disabled Auto Detect DIMM PCI ClK Enabled Item Help Spread Spectrum Enabled Menu Level X KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Default Settings CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc Frequency Control ...

Page 51: ...tten by the CPU is directed to both the PCI VGA device s palette registers and the ISA VGA device s palette registers permitting the palette registers of both VGA devices to be identical Disabled Enabled PCI VGA Palette Snoop Disabled Item Help Menu Level X CMOS Setup Utility Copyright 1985 2004 American Megatrends Inc PnP PCI KLIJ Move Enter Select Value F10 Save ESC Exit F1 General Help F9 Defau...

Page 52: ...quency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features Set Supervisor Password XIntegrated Peripherals Save Exit Setup XPower Management Setup Exit Without Saving XPnP PCI Configurations CMOS Setup Utility Copyright 1985 2004 America Megatrends Inc v02 58 Copyright 1985 2004 America Megatrends Inc F1 General Help F9 Load Default Settings IJKL Move Enter Select Valu...

Page 53: ...PU Temperature automatically Ambient Temperature Delect ambient temperature automatically CPU SYSTEM FAN Speed RPM Detect CPU SYSTEM Fan Speed status automatically CPU Shutdown Temperature 90 o C 194 o F Item Help SMART FAN Control Enabled Menu Level X CPU Temperature 53 o C 127o F Ambient Temperature 35 o C 95 o F CPU FAN Speed 981RPM SYS FAN Speed 1125RPM Vcore 1 373V 12V 11 951V 5 0V 5 148V 3 3...

Page 54: ...S settings The User password can also start the system While the User password XProduct Information XPC Health Status XStandard CMOS Features XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features Set Supervisor Password XIntegrated Peripherals Save Exit Setup XPower Management Setup Exit Without Saving XPnP PCI Configurations CMOS Setup Utility Copyright 1985 ...

Page 55: ...mation XPC Health Status XStandard CMOS Features XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features Set Supervisor Password XIntegrated Peripherals Save Exit Setup XPower Management Setup Exit Without Saving XPnP PCI Configurations CMOS Setup Utility Copyright 1985 2004 America Megatrends Inc v02 58 Copyright 1985 2004 America Megatrends Inc F1 General Help...

Page 56: ...Without Saving item and press Y to discard any changes you have made XProduct Information XPC Health Status XStandard CMOS Features XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features Set Supervisor Password XIntegrated Peripherals Save Exit Setup XPower Management Setup Exit Without Saving XPnP PCI Configurations CMOS Setup Utility Copyright 1985 2004 Ameri...

Page 57: ...rPower FG desktop computer for maintenance and troubleshooting NOTE The screws for the different components vary in size During the disassembly process group the screws with the corresponding components to avoid mismatches when putting back the components Machine Disassembly and Replacement Chapter 3 ...

Page 58: ...on Before You Begin Before proceeding with the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug the AC adapter and all power and signal cables from the system ...

Page 59: ... you have turned off the system and all peripherals connected to it Removing the Housing 1 Turn off the system power and steady it 2 Remove the two screws holding the side panel 3 Press down the clip to release the left panel 4 Slide the left cover out and then gently pull it outward to detach it from the housing Removing the Front Panel 1 Release the inner clips before removing the front panel as...

Page 60: ...ct the Audio cable two front USB cables from Right to Left 3 Disconnect the SATA cable 4 Disconnect the IDE cables and power cable 5 Disconnect the SYS fan cable 3pin and Heatsink cable 4pin Removing the Cables from Devices 1 Disconnect the two SATA cables from the rear of HDD ...

Page 61: ...wing the arrow direction Then detach ODD from the chassis Removing the FDD Press the lock following the arrow direction Then detach the FDD from the chassis Removing the Card Reader Press the lock following the arrow direction Then detach the Card Reader from the chassis Removing the HDD Press the lock following the arrow direction Then detach the HDD from the chassis ...

Page 62: ...w 2 Detach the USB module from the chassis 3 Disconnect the cables and loosen the two screws to detach the daughter board Removing the Heatsink and CPU 1 Loosn those fore screws on each corner 2 Detach the Heatsink from the mainboard 3 Press down to release the CPU lever 4 Lift the clip 5 Lift the cover 6 Detach the CPU from the socket ...

Page 63: ...YS fan from the chassis Removing the Power Supply 1 Disconnect the power supply cable from mainboard 2 Loosen the four screws 3 Detach the power supply from the chassis Removing the Mainboard 1 Loosen the eight screws from mainboard 2 Detach the mainboard from chassis ...

Page 64: ... 4 57 This chapter provides troubleshooting information for the Aspire T680 AcerPower FG T Power On Self Test POST T POST Check Points T POST Error Messages List T Error Symptoms List Chapter 4 Troubleshooting ...

Page 65: ... available or LED The system halts when fatal error occurs The main components on the main board that must be diagnosed and or initialized by POST to ensure system functionality are as follows T Microprocessor with built in numeric co processor and cache memory subsystem T Direct Memory Access DMA controller T Interrupt system T Three programmable timers T ROM subsystem T RAM subsystem T RTC RAM s...

Page 66: ...hipset hook to copy BIOS back to E000 F000 shadow RAM 0h1 Expand the Xgroup codes locating in physical address 1000 0 02h Reserved 03h Initial Superio_Early_Init switch 04h Reserved 05h 1 Blank out screen 2 Clear CMOS error flag 06h Reserved 07h 1 Clear 8042 interface 2 Initialize 8042 self test 08h 1 Test special keyboard controller for Winbond 977 series Super I O chips 2 Enable keyboard interfa...

Page 67: ...ved 21h HPM Initialization notebook platform 22h Reserved 23h 1 Check validity of RTC value e g a value of 5Ah is an invalid value for RTC minute 2 Load CMOS settings into BIOS stack If Smos checksum fails use default value instead 24h Prepare BIOS resource map for PCI PnP use If ESCD is valid take into consideration of the ESCD s legacy information 25h Early PCI Initialization Enumerate PCI bus n...

Page 68: ...d 35h Test DMA Channel 0 36h Reserved 37h Test DMA Channel 1 38h Reserved 39h Test DMA page registers 3Ah Reserved 3Bh Reserved 3Ch Test 8254 3Dh Reserved 3Eh Test 8259 interrupt mask bits for channel 1 3Fh Reserved 40h Test 8259 interrupt mask bits for channel 2 41h Reserved 42h Reserved 43h Test 8259 functionality 44h Reserved 45h Reserved 46h Reserved 47h Initialize EISA slot 48h Reserved 49h 1...

Page 69: ...tion Assign CSN to every ISA PnP device 58h Reserved 59h Initialize the combined Trend Anti Virus code 5Ah Reserved 5Bh Optional Feature Show message for entering AWDFLASH EXE from FDD optional 5Ch Reserved 5Dh 1 Initialize Init_Onboard_Super_IO 2 Initialize Init_Onboard_AUDIO 5Eh Reserved 5Fh Reserved 60h Okay to enter Setup utility i e not until this POST stage can users enter the CMOS setup uti...

Page 70: ...co processor 7Bh Reserved 7Ch Init HDD write protect 7Dh Reserved 7Eh Reserved 7Fh Switch back to text mode if full screen logo is supported If errors occur report errors wait for keys If no errors occur or F1 key is pressed to continue Clear EPA or customization logo 80h Reserved 81h Reserved 82h 1 Call chipset power management hook 2 Recover the text fond used by EPA logo not for full screen log...

Page 71: ...rend Anti Virus code 94h 1 Enable L2 cache 2 Program Daylight Saving 3 Program boot up speed 4 Chipset final initialization 5 Power management final initialization 6 Clear screen dispaly summary table 7 Program K6 write allocation 8 Program P6 class write combining 95h Update keyboard LED typematic rate 96h 1 Build MP table 2 Build update ESCD 3 Set CMOS century to 20h or 19h 4 Load CMOS time into...

Page 72: ...et correctly Real Time Clock Error CMOS Battery Bad CMOS Checksum Error 1 Enter BIOS Setup and load the default settings 2 RTC Battery 3 System Board Equipment Configuration Error 1 Ensure the system configuration set in BIOS Setup is correct 2 Enter BIOS Setup and load the default settings 3 RTC battery 4 System board System Management Memory Bad Memory Error at MMMM SSSS OOOOh 1 Insert the memor...

Page 73: ...e NOT factory installed then reboot the system PCI Device Error 1 Load default settings in Setup 2 Enter BIOS Setup and set the Reset Resource Assignments of the PnP PCI Options to Yes then reboot the system 3 Remove all adapter cards that are NOT factory installed then reboot the system PS 2 Pointing Device Interface Error PS 2 Pointing Device Error 1 Re connect PS 2 keyboard and mouse 2 Enter BI...

Page 74: ...ize shown or repeated during POST 1 Insert the memory modules in the DIMM sockets properly then reboot the system 2 Memory module 3 System board System works but fails to enter power saving mode when the Power Management Mode is set to Enabled and power saving timer set in BIOS has elapsed 1 Enter BIOS Setup and load default settings In Windows 98 check settings in Power Management Property of Con...

Page 75: ...e drive cable 4 System board Hard Disk Drive NOTE Ensure hard disk drive is configured correctly in BIOS Setup cable jumper are set correctly before diagnosing any hard disk drive problems Hard disk drive test failed 1 Enter BIOS Setup and Load default settings 2 Hard disk drive cable 3 Hard disk drive 4 System board Hard disk drive cannot format completely 1 Enter BIOS Setup and Load default sett...

Page 76: ...re the information in the Date and Time of BIOS Setup is set correctly 2 RTC battery 3 System board Audio Audio software program invokes but no sound comes from speakers 1 Speaker power connection cable Modem Modem ring cannot wake up system from suspend mode 1 Ensure the Modem Ring Indicator in BIOS Setup or Power Management is set to Enabled 2 If PCI modem card is used reinsert the modem card to...

Page 77: ...dable monitor Other monitor problems 1 Monitor signal connection cable 2 Monitor 3 Video adapter card 4 System board Display changing colors 1 Monitor signal connection cable 2 Monitor 3 System board Display problem not listed above including blank or illegible monitor 1 Monitor 2 Load default settings if screen is readable 3 System board Error Symptom Action FRU ...

Page 78: ...g power switch does not turn off system Only unplugging the power cord from electrical outlet can turn off the system 1 Ensure the Power Switch 4 sec in BIOS Setup of Power Management is not set to Suspend 2 Power switch cable assembly Pressing power switch does not turn on the system 1 Ensure the power override switch situated at the back of the machine just above the connector for the power cabl...

Page 79: ...web or channel http aicsl acer com tw spl if you do not own a specific account you can still access the system with guest guest For whatever reasons a 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 number code to those given in the FRU list of this printed Service Guide You MUST use the l...

Page 80: ...73 Chapter 5 Exploded Diagram ...

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