Asus A7A266 Motherboard DIY Troubleshooting Guide
Asus A7A266 Manual
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Asus A7A266 manual content summary:
- Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 1
® A7A266 Socket A - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 2
© 2001 2 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 3
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30.5cm (12.0in) PS/2 USB1 USB2 COM1 24.5cm (9.64in) CPU_FAN 01 01 Socket 462 COM2 PWR_FAN MIC2 AUX AUDIO_PANEL CD1 MODEM WOL_CON LED JTPWR 0 1 23 01 23 45 A7A266 CLRTC WOR JEN VID DIP Switches DSW SMB CHA USB2 USB1 IDELED CHA_FAN AFPANEL PANEL 14 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 15
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01 01 A7A266 A7A266 Onboard LED ON Standby Power OFF Powered Off 18 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 19
01 01 01 01 ON 1 2 3 4 5 6 7 8 9 10 A7A266 A7A266 DIP Switch DSW 1-10: Frequency Multiples OFF ON ™ ™ 12 JEN 23 Jumper Mode Jumper Free (Default) DSW ON 1 2 3 4 5 6 7 8 9 10 A7A266 A7A266 Jumper Mode Setting OFF ON 19 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 20
01 01 01 01 A7A266 A7A266 VID Selection Enable VID Disable (Default) 12 23 DSW ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 A7A266 A7A266 DDR/SDR DIMM Selection OFF SDRAM ON DDR DRAM 20 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 21
4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 01 01 DSW CPU→ 100MHz 100MHz 120MHz 133MHz SDRAM→ 100MHz 133MHz 120MHz 133MHz A7A266 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 A7A266 CPU External Frequency Selection CPU→ 90MHz 101MHz 126MHz SDRAM→ 90MHz 101MHz 126MHz 21 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 22
DSW 01 01 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 A7A266 A7A266 CPU Ratio Setting OFF CPU Ratio Enable ON CPU Ratio Disable 12.5x 12.0x 11.5x 11.0x 10.5x 10.0x 9.5x 9.0x 8.5x 8.0x 7.5x 7.0x 6.5x 6.0x 5.5x 5.0x 22 6 [ - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 23
3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 9.0x 6.0x 8.5x 5.5x ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 8.0x 5.0x ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 DSW A7A266 A7A266 CPU External Clock (BUS) Frequency Selection 01 01 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 24
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01 01 01 01 A7A266 A7A266 184-Pin DDR DIMM Sockets 104 Pins 80 Pins A7A266 A7A266 168-Pin SDR DIMM Sockets 168-Pin DIMM Notch Key Definitions (3.3V) 88 Pins 60 Pins 20 Pins Lock DRAM Key Position Voltage Key Position RFU Unbuffered Buffered 5.0V Reserved 3.3V 26 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 27
A7A266 A7A266 Socket A 01 01 BLANK LEVER AMD™ Athlon LOCK NOTCH 27 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 28
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01 01 AGP Card without Retention Notch A7A266 20-pin bay Rib (inside slot) A7A266 Accelerated Graphics Port (AGP PRO) TOP VIEW 28-pin bay Rib 30 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 31
01 01 A7A266 A7A266 Audio Modem Riser (AMR) Slot ASUS MR-I Card 31 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 32
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PS/2 Mouse (6-pin Female) PS/2 Keyboard (6-pin Female) 33 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 34
USB 0 Universal Serial Bus (USB) 1 COM1 COM2 Serial Ports (9-pin Male) Parallel Port (25-pin Female) 34 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 35
Game/MIDI (15-pin Female) Line Out Line In Mic 1/8" Stereo Audio Connectors 01 01 NOTE: Orient the red markings on the floppy ribbon cable to PIN 1 A7A266 PIN 1 A7A266 Floppy Disk Drive Connector 35 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 36
UltraDMA/100 UltraDMA/66 Primary Secondary Slave UltraDMA/66 Master UltraDMA/100 01 01 Secondary IDE Connector Primary IDE Connector - + NOTE: Orient the red markings (usually zigzag) on the IDE ribbon cable to PIN 1. A7A266 PIN 1 A7A266 IDE Connectors 36 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 37
01 01 01 01 A7A266 A7A266 IDE Activity LED IDELED TIP: If the case-mounted LED does not light, try reversing the 2-pin plug. +5Volt (Power Supply Stand By) Chassis Signal Ground A7A266 A7A266 Chassis Open Alarm Lead 1 CHASSIS 37 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 38
01 01 01 01 IMPORTANT: Requires an ATX power supply with at least 720mA +5 volt standby power. A7A266 A7A266 Wake-On-LAN Connector WOL_CON +5 Volt Standby PME Ground A7A266 A7A266 Wake-On-Ring Connector 38 WOR 1 2 RI# Ground - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 39
GND +12V Rotation 01 01 01 01 CPU_FAN PWR_FAN GND +12V Rotation A7A266 GND +12V Rotation CHA_FAN A7A266 12-Volt Cooling Fan Power JTPWR Power Supply A7A266 Thermal Sensor A7A266 Thermal Sensor Connector 39 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 40
01 01 01 01 USB1 USB2 USB Power USBP2- USBP2+ GND NC A7A266 1 5 6 10 USB Power USBP3- USBP3+ GND A7A266 Front Panel USB Headers SMBCLK Ground SMBDATA +5V A7A266 A7A266 SMBus Connector SMB 1 40 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 41
AFPANEL +5 V IRRX GND IRTX SMBDATA +3VSB SMBCLK LOCKKEY NC NC NC GND NC CIRRX +5VSB CHASSIS# EXTSMI# +5V MLEDPCIRST# BATT NC +5 V IRRX GND IRTX A7A266 SIR CIR IR_CON A7A266 Front Panel Connectors NC GND NC CIRRX +5VSB Standard Infrared (SIR) Front View Back View IRTX +5V GND (NC) IRRX - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 42
01 CD1 (White) Left Audio Channel AUX (Black) Ground Right Audio Channel Modem-Out Ground Ground A7A266 Modem-In MODEM Left Audio Channel Ground Right Audio Channel A7A266 Internal Audio Connectors A7A266 MIC2 1 3 MIC Power MIC Input Ground A7A266 Internal Microphone Connector 42 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 43
01 01 01 01 +12.0Volts +5V Standby Power Good Ground +5.0 Volts Ground +5.0 Volts A7A266 Ground +3.3 Volts +3.3 Volts A7A266 ATX Power Connector +5.0 Volts +5.0 Volts -5.0 Volts Ground Ground Ground Power Supply On Ground -12.0Volts +3.3Volts * Requires an ATX power supply. Keylock Power LED - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 44
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MAIN ADVANCED POWER BOOT EXIT or or ← or → (keypad arrow) ↑ or ↓ (keypad arrows) - (minus key) + (plus key) or spacebar or or 52 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 53
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01 01 A7A266 A7A266 Clear RTC RAM CR2032 3V Lithium Cell CMOS Power CLRTC Short solder points to Clear CMOS 59 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 60
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AGP AUTOEXEC.BAT BIOS Bit Boot Bus Master IDE Byte 91 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 92
Cache CMOS CPU Cylinder Device Driver DIMM DMA DOS 92 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 93
DRAM IDE MIDI MPEG NTSC PAL 93 - Asus A7A266 | Motherboard DIY Troubleshooting Guide - Page 94
PCI Bus PCMCIA Peripherals POST SCSI UltraDMA/33 USB 94
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A7A266
Socket A