Acer Aspire T680 Aspire T680 and Power FG Service Guide
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- Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 1
Aspire T680 AcerPower FG Service Guide Service guide files and updates are available on the AIPG/CSD web; for more information, please refer to http://csd.acer.com.tw PRINTED IN TAIWAN - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 2
Revision History Please refer to the table below for the updates made on Aspire T680 & AcerPower FG service guide. Date Chapter Updates II - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 3
stored in a retrieval system, or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without the prior written permission of Acer Incorporated. Disclaimer The information in this guide is subject to - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 4
additional information related to the current topic. Alerts you to any damage that might result from doing or not doing specific actions. Gives precautionary measures to avoid possible hardware or software problems. Reminds you to do specific actions relevant to the accomplishment of procedures. IV - Acer Aspire T680 | Aspire T680 and Power FG 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 Aspire T680 | Aspire T680 and Power FG Service Guide - Page 6
1 System Specifications 1 Overview 1 Features 2 Block Diagram 5 MainBoard Placement 7 Aspire T680 Front Panel 9 AcerPower FG 10 Rear Panel 11 System Peripherals 12 Mouse (PS/2 or USB, manufacturing option 12 Keyboard (PS/2 or USB, manufacturing option 12 Speakers 13 Acer eRecovery - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 7
Table of Contents Removing the USB Module 55 Removing the Heatsink and CPU 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 8
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 10/100/1000 LAN and on board Audio - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 9
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 T 3 PCI slot 1 PCIE - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 10
), Headphone In (rear), When earphone is plugged in the front access audio jack, speaker-out will mute automatically. 5.1 Channel Audio Support Reserved disable function on BIOS side. Default is enabled. LAN T T T T Controller : ICH6 LAN Chip : Realtek 8100S Should be worked under 10/100/1000 Mbs - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 11
System LED Definition System S State S1 (Idle) S3 (Suspend to RAM) S4 (Suspend to Disk) S5 (Shut Down) Wake-Up devices supported with default setting T Power Button : Enabled T PS/2 Keyboard : Enabled T USB Keyboard : Enabled T RTC : Disabled T LAN : Disabled T Modem (Ring) : Disabled T Power - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 12
I/O Connectors T 1 PS/2 Keyboard Port, 1 PS/2 Mouse Port T 1 Parallel Port, 1 Serial Port T 1 VGA Port T 1 10/100/1000 LAN Port T 4 USB Ports T 1 Line-in/Line-out/Mic-in port T On-Board Connectos T 1 CPU Socket T 4 Memory Slots T 1 PCI Express x16 Slot T 3 PCI Slots T 1 FDD Slot T 1 PATA IDE Slots - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 13
DDIMM3: DDR Socket 184P USB4 2 ports USB V2.0 USBLAN 8 ports BW : 2GB/s (Support Lsoch) DDIMM4 : DDR Socket 184P INTEL PCIEx1 Line in Line out Up to Ultra ATA/100 IDE1 40pin Two IDE Channel Audio Codec AC' 97 & Lan I/F ICH6 609pin EBGA BW : 133MB/s @Freq : 33MHz PCI1 Slot 120pin @ AD17 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 14
MainBoard Placement Chapter 1 7 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 15
Standard 24-pin ATX power connector Floppy diskette drive connector Primary IDE channel Clear CMOS jumper Serial ATA connectors Panel connector for case switches and LEDs Onboard serial port header Front Panel USB headers BIOS flash protect jumper CD-in connector Front panel audio header 32-bit add - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 16
. DNesocr.iptionDescription No. Description 1 Optical drive 2 Floppy drive 3 Power button 4 Speaker or headphone jack 5 Microphone jack 6 USB ports NOTE: The specifications above are for reference only. The exact configuration of your PC depends on the model purchased. Chapter 1 9 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 17
AcerPower FG Front 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 10 Chapter 1 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 18
Rear 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 Chapter 1 11 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 19
Peripherals The Aspire T670 and AcerPower FE computer consist of the system itself, and system peripherals, like a mouse, keyboard and a set of speakers (optional). This section provides a brief description of the basic system peripherals. Mouse (PS/2 or USB, manufacturing option) The included - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 20
bundled with speaNkoetres:, before powering on the system, connect 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 21
action and follow the onscreen instructions to complete the restore process. Create factory default image CD When the System CD and Recovery CD are not available, you can create them by using this feature. 1. Boot to Windows XP. 2. Press + to open the Acer eRecovery utility. 3. Enter the - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 22
pre-loaded software internally for easy driver and application re-installation. 1. Boot to Windows XP. 2. Press + to open the Acer eRecovery utility. 3. Enter the password to proceed. The default password is six zeros. 4. In the Acer eRecovery window, select Recovery actions and click Next - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 23
Acer disc-to-disc recovery Restore without a Recovery CD This recovery process helps you restore the C: 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 multilingual operating system - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 24
Board Major Chip Item System Core Logic Super I/O Controller LAN Controller Memory Controller E-IDE Controller SATA Controller RJ45 Controller Audio Controller VGA Controller Specification Northbridge : Intel 915GV Southbridge : Intel ICH6 W83627THF ICH6 915GV ICH6 ICH6 ICH6 ALC880 915GV Processor - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 25
the processor core clock frequency (Advanced Transfer Cache) L2 Cache function control Enable/Disable by BIOS Setup L2 Cache scheme Fixed in write-back LAN Interface Item LAN Controller LAN Controller Resident Bus LAN Port Function Control Specification ICH6 PCI Bus ONE RJ-45 on board Enable - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 26
by BIOS setup Diskette Drive Interface Item Diskette Drive Controller Resident Bus Supported Diskette Drive Formats Function Control Specification LPC Specification USB 2.0 ICH6 4 Rear : 2 On-board header : 2 Support legacy keyboard for legacy mode Wake-up Event Specifications Device Power - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 27
1000000-FFFFFFF Size 640 KB System Memory 128 KB Video RAM 32 KB I/O Expansion ROM 16 KB I/O Expansion ROM 16 KB I/O Expansion ROM 16 KB I/O Expansion ROM 16 KB I/O Expansion ROM 32 KB for SCSI BIOS 32 KB 64 KB BIOS System Memory 384 KB I/O Card Memory System Memory Function Onboard DRAM Reserved - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 28
0CFC 778-77A Devices DMA Controller-1 Interrupt Controller-1 System Timer Keyboard Controller 8742 System Speaker CMOS RAM Address and Real Time Clock DMA Page Register Interrupt Controller-2 DMA Controller-2 Math Co-Processor Secondary IDE Primary IDE Parallel Printer Port 2 Serial Asynchronous - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 29
DRQ Assignment Map DRQ0 DRQ1 DRQ2 DRQ3 DRQ4 DRQ5 DRQ6 DRQ7 DRQx System Devices N N FDD N Cascade N N N Add-On-Card Devices of withstanding, with no physical or functional demage, mechanical impact from height-specific drops. Test Standard Package Cross Weight Drop Height Not of Drop KGs lbs - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 30
Jumper CLR_CMOS Connector Type Header 3*1 BIOS_WP BIOS_TBL Header 3*1 Header 3*1 Description Clear CMOS Flash Protect Boot Block Function 1-2 Normal (Default) 2-3 Clear CMOS NOTE: Before clear the CMOS, the AC power of powersupply should be removed 1-2: Flash (Default) 2-3: Flash Protect - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 31
19 COM 20 -5V 21 +5V 22 +5V 23 +5V 24 COM Pin Signal Name 1 Ground 2 Ground 3 +12V 4 +12V SYS_FAN Illustration Pin Signal Name 1 Ground : Systeme Ground 2 Power +12V 3 SENSE 24 Chapter 1 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 32
CPU FAN Illustration F_USB1 Illustration F_USB2 Illustration CD-IN1 Illustration Pin Signal Name 1 Ground 2 Power +12V 3 SENSE 4 PWM Pin Signal Name 1 USB DUAL VCC 3 USBP4- 5 USBP4+ 7 Ground 9 Key Pin Signal Name 2 DSB UDAL VCC 4 USBP5- 6 USBP5+ 8 Ground 10 USBOC45# Pin - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 33
pull-up (330ohm) to +5V Hard Disk active LED MSG LED pull up (330ohm) to +5V Reset Switch low reference pull down (100ohm) to GND Power Switch high reference pull up (10000ohm) to +5V Reset Switch high reference pull up (1000ohm) to +5V - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 34
. Q-Flash allows the user to quickly and easily update or backup BIOS without entering the operating system. BIOS is a Window s-based utility that doesn't required users to boot to DOS before upgrading BIOS but directly download and update BIOS from the Internet. Control Keys wxyz e ^ Item - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 35
Features Advanced BIOS Features Advanced Chipset Features Integrated Peripherals Power Management Setup PnP/PCI Configuration PC Health Status BIOS This setup page includes all the items of Award special enhanced features The values for the chipset can be changed through this menu, and the system - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 36
, Inc. Product Information Product Names Aspire T680/AcerPower FG Item Help System S/N Main Board ID E915GV Menu Level System BIOS Version SMBIOS Version R01-A2 2.3.3 System BIOS ID BIOS Release Date R01-A2 08/22/05 KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 37
to Sat. Jan. to Dec. KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings 1999 to 2098 F1: General Help "Enhanced" (default) in the BIOS configuration. Windows* 98SE and Windows* Me operatin systems do not support Enhanced mode IDE/Serial ATA resources - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 38
BIOS to automatically detect IDE devices during POST (default) None : Select this if no IDE devices are used and the system will skip the automatic detection step and allow for faster system start up Manual : User can manually computer. None : No floppy drive installed 360K, 5.25" : 5.25 inch PC - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 39
DVD Drives Boot Other Device [Press Enter] [Press Enter] [Press Enter] [Press Enter] [Enabled] KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help NOTE: "#" System will detect automatically and show up when you install the IntelR Pentium 4 processor with - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 40
IDE Hard Disk boot sector protection. If this function is enabled and there is someone attempt to write data into this area, BIOS will show a mode. APIC provides symmetric multi-processing (SMP) for systems,allowing support for up to 60 processors. Enabled Scroll to this item and press to - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 41
] KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help Parameter 1st/2nd/3rd/4th Boot Device Description Use these four items to select the priority and order of the devices that your system searches for an operating system at start-up time. 34 Chapter - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 42
Hard Disk Drives CMOS Setup Utility-Copyright © 1985-2004, American Megatrends, Inc, Hard Disk Drives Hard Disk Drives Item Help 1st Drive Menu Level X KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help Chapter 2 35 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 43
3rd Drive [1st FLOPPY DRIVE] [Generic USB SD Rea] [Generic USB CF Rea] Menu Level X 4th Drive [Generic USB SM Rea] KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help 36 Chapter 2 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 44
CD/DVD Drives CMOS Setup Utility-Copyright © 1985-2004, American Megatrends, Inc, CD/DVD Drives CD/DVD Drives Item Help 1st Drive [HL-DT-ST RW/DVD GC] Menu Level X KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help Chapter 2 37 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 45
. Do not change the values in this field unless you change specifications of the installed DRAM or the installed CPU. Use this item to specify whether your graphics adapter is installed in one of the PCI slots or is integrated on the mainboard. This item shows the VGA memory size borrowed from main - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 46
Parameter USB 2.0 Controller USB Function Legacy USB Support Onboard AUDIO Function Onboard LAN Function LAN Boot ROM Support Serial Port 1 Address Serial Port 2 Address Parallel Port Address Description Option Enable this item if the system supports USB Enabled 2.0 Disabled This item is used - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 47
. 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 Indicates the EPP version N/A This item assigns either IRQ 5 or 7 to the - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 48
S3 (STR): The S3 sleep mode is s power-down state in which power is supplied only to essential components such as main memory and wake-capable devices and all system context is saved to main memory. The information stored in memory will be used to restore the PC to the previous state when an wake-up - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 49
your computer to automatically restart or return to its former operating status after power returns from a power failure. Former in Data/Time to power on system Disabled : Disable this function Enabled : Enable alarm function to Power On system. If RTC Alarm Lead To Power On is Enabled. Date - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 50
[Enabled] Menu Level X KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help Parameter Auto Detect DIMM/PCI Clk Spread Spectrun Description When this item is enabled, BIOS will disable Enabled the clock signal of free DIMM and PCI slots. Disabled If you - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 51
-Copyright © 1985-2004, American Megatrends, Inc, PnP/ PCI PCI/VGA Palette Snoop [Disabled] Item Help Menu Level X KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help Parallem PCI/VGA Palette Snoop Description Disabled - Data read or written by the - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 52
for BIOS and Chipset Features which the system automatically BIOS Features Load Default Settings XAdvanced Chipset Features XIntegrated Peripherals XPower Management Setup XPnP/PCI Configurations Set Supervisor Password Save & Exit Setup Exit Without Saving IJKL: Move Enter : Select +/-/:Value - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 53
American Megatrends, Inc, PC Health Status CPU Shutdown 378V 1.516V Menu Level X KLIJ: Move Enter: Select +/-/: Value F10:Save ESC: Exit F9: Default Settings F1: General Help SYSTEM FAN Speed (RPM) Description Enables you to set the maximum temperature the system can reach before powering - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 54
XStandard CMOS Features XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Without Saving XPnP/PCI Configurations IJKL: Move Enter : Select +/-/:Value F10: Save ESC: Exit F1 : General Help F9: Load system or modify the CMOS settings. The User password can also start the - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 55
Health Status XStandard CMOS Features XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features XIntegrated Setup Exit Without Saving XPnP/PCI Configurations IJKL: Move Enter : Select +/-/:Value F10: Save ESC: Exit F1 : General Help F9: Load Default Settings - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 56
CMOS Features XPC Health Status XFrequency Control XAdvanced BIOS Features Load Default Settings XAdvanced Chipset Features XIntegrated Password Save & Exit Setup Exit Without Saving IJKL: Move Enter : Select +/-/:Value F10: Save ESC: Exit F1 : General Help F9: Load Default Settings v02 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 57
Disassembly and Replacement Chapter 3 This chapter contains step-by-step procedures on how to disassemble the Aspire T680/AcerPower FG desktop computer for maintenance and troubleshooting. NOTE: The screws for the different components vary in size. During the disassembly process, group the screws - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 58
General Information 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. Chapter 3 51 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 59
unit. CAUTION: Before you proceed, make sure that 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 60
Removing the Cables from Mainboard 1. Disconnect the SATA cable. 2. Disconnect 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 61
from the rear of FDD. 2. Disconnect the IDE cable and power cable from the rear of ODD. Removing the ODD Press the lock following the arrow direction. Then detach ODD from the chassis. Removing the FDD - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 62
Pop up the tabs on both side. 2. Detach the memory out from the slot. Removing the USB Module 1. Remove the one screw. 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 63
Removing the System FAN 1. Loosen the four screws. 2. Detach the SYS 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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 64
Troubleshooting Chapter 4 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 57 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 65
under the control of the BIOS. The Power-On Self Test (POST) is a BIOS procedure that boots the system, initializes and diagnoses the system components, and controls the operation of the power-on password option. During POST, system reports test or initialization failure through Beep codes, display - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 66
Points When POST executes a task, it uses a series of preset numbers called check point to be latched at port 80h, indicating the stages it is currently running. This latch can be read and shown on a debug board. The following table describes the Acer common tasks carried out by POST. A unique check - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 67
fails, use default value instead. Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take into consideration of the ESCD's legacy information. Early PCI Initialization: • Enumerate PCI bus number • Assign memory & I/O resource • Search for a valid VGA device & VGA BIOS, and put it - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 68
48h 49h 4Ah 4Bh 4Ch 4Dh Description Reserved Invoke Video BIOS Reserved 1. Initialize double-byte language font (Optional) 2. if Early_Reset_KB is defined e.g. Winbond 977 series Super I/O chips. See also POST 63h EISA slot Reserved 1. Calculate total memory by testing the last double word - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 69
not identical. Reserved Initialize USB Keyboard & Mouse Reserved Test all memory (clear all extended memory to 0) Clear password according to H/W jumper (Optional) Reserved Display number of processors (multi-processor platform) Reserved 1. Display PnP logo 2. Early ISA PnP initialization - Assign - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 70
F2 is prrssed. Detect serial ports & parallel ports Reserved Reserved Detect & install co-processor Reserved Init HDD write protect Reserved Reserved Switch back to text mode if full screen logo is supported boot devices 1. USB final initialization 2. Switch screen back to text mode Reserved NET PC: - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 71
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 Update keyboard LED & typematic rate 1. Build MP table - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 72
the diagnostics program. NOTE: Check all power supply voltages, switch, and jumper settings before you replace the main board. Also check the power supply voltages if you have a "system no-power" condition. NOTE: To diagnose a problem, first find the BIOS error messages in the left column. If - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 73
Setup and load the default settings. 3. PS/2 mouse 4. PS/2 keyboard 5. System board 1. Flash BIOS 1. Press DEL to enter Setup and reconfigure the system. 1. Press ESC to reject NMI error or press any other key to reboot the system. 1. Insert a bootable disk into the floppy disk drive or remove this - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 74
BIOS Setup and load default settings. In Windows 98, check settings in Power Management Property of Control Panel. 2. Reload software from Recovery CD. System hangs before system boot. 1. See "Index of Symptoms" 2. See "Undetermined Problems" System hangs after system boot. 1. Execute a system - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 75
does not work. 1. Ensure the diskette drive is not set to None in the Disk Drives of BIOS Setup. 2. Diskette drive power 3. Diskette drive connection/cable 4. Diskette drive 5. System board Diskette drive read/write error. 1. Diskette. 2. Ensure the diskette drive is not set to Write protect in - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 76
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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 77
Display changing colors. Display problem not listed above (including blank or illegible monitor). Action/FRU 1. Monitor signal connection/cable. 2. Monitor 3. Video adapter card 4. System board 1. Monitor signal connection/cable 2. Monitor 3. System board 1. "Monitor". 2. Load default settings - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 78
the printer driver is properly installed. Refer to the printer service manual. 2. Printer. 3. Printer cable. 4. System board. Printer problems. 1. Refer to the service manual for the printer. Keyboard Some or all keys on keyboard do not work. 1. Keyboard Power Supply Pressing power switch - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 79
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 - Acer Aspire T680 | Aspire T680 and Power FG Service Guide - Page 80
Exploded Diagram 73 Chapter 5