Motherboard DIY Troubleshooting Guide
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... Safety information vii About this guide viii How this guide is organized viii Conventions used in this guide ix Where to find more information ix ASUS contact information x Chapter 1: Product introduction 1-1 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Special features 1-2 1.3.1 Product highlights 1-2 1.3.2 Value-... Overview 2-4 2.4.2 Installing the CPU 2-5 2.4.3 Installing the heatsink and fan 2-7 2.4.4 Connecting the CPU fan cable 2-9 2.5 System memory 2-10 2.5.1 Overview 2-10 2.5.2 Memory configurations 2-10 2.5.3 Installing a DIMM 2-11 2.5.4 Removing a DIMM 2-12 iii
... Safety information vii About this guide viii How this guide is organized viii Conventions used in this guide ix Where to find more information ix ASUS contact information x Chapter 1: Product introduction 1-1 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Special features 1-2 1.3.1 Product highlights 1-2 1.3.2 Value-... Overview 2-4 2.4.2 Installing the CPU 2-5 2.4.3 Installing the heatsink and fan 2-7 2.4.4 Connecting the CPU fan cable 2-9 2.5 System memory 2-10 2.5.1 Overview 2-10 2.5.2 Memory configurations 2-10 2.5.3 Installing a DIMM 2-11 2.5.4 Removing a DIMM 2-12 iii
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... standout in the long line of system memory with the Intel® 845 (Brookdale) chipset to set a new benchmark for an effective desktop platform solution. The P4B-LS incorporates the Intel® Pentium® 4 Processor in ) ASUS LS99 LAN/SCSI card (for ASUS LS99 proprietary expansion slot) ASUS P4B-LS support CD ASUS 2-port USB module 80-conductor ribbon...
... standout in the long line of system memory with the Intel® 845 (Brookdale) chipset to set a new benchmark for an effective desktop platform solution. The P4B-LS incorporates the Intel® Pentium® 4 Processor in ) ASUS LS99 LAN/SCSI card (for ASUS LS99 proprietary expansion slot) ASUS P4B-LS support CD ASUS 2-port USB module 80-conductor ribbon...
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...-added solutions Overclocking The P4B-LS overclocking features: • adjustable CPU frequency multiple in Turbo Mode • adjustable Vcore and VIO ASUS iPanel support The motherboard supports the ASUS iPanel to 200MHz at 1MHz...memory Card, and Memory Stick (MS). Multi-language quick setup guide The motherboard package includes a multi-language Quick Setup Guide to 30 devices, including Ultra160 hard disk drives, external storage subsystems, scanners, and CD-ROM drives. LAN/SCSI interface The ASUS proprietary expansion slot onboard supports the ASUS LS99 LAN/SCSI card. ASUS P4B-LS...
...-added solutions Overclocking The P4B-LS overclocking features: • adjustable CPU frequency multiple in Turbo Mode • adjustable Vcore and VIO ASUS iPanel support The motherboard supports the ASUS iPanel to 200MHz at 1MHz...memory Card, and Memory Stick (MS). Multi-language quick setup guide The motherboard package includes a multi-language Quick Setup Guide to 30 devices, including Ultra160 hard disk drives, external storage subsystems, scanners, and CD-ROM drives. LAN/SCSI interface The ASUS proprietary expansion slot onboard supports the ASUS LS99 LAN/SCSI card. ASUS P4B-LS...
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... even if you plug in any 3.3V AGP card into the AGP slot. A 478-pin surface mount, Zero Insertion Force (ZIF) socket called the Intel Memory Controller Hub (MCH) is present on the +5V standby lead (+5VSB). 5 Floppy disk connector. The MCH provides the processor interface, system... ATX +12V power supply. One side of the connector is used if you don't have at least 1A on PCB R1.05 or later versions.) ASUS P4B-LS motherboard user guide 1-5 This Accelerated Graphics Port (AGP) slot supports 1.5V AGP4X mode graphics cards for the floppy disk drive. This socket accommodates the Intel...
... even if you plug in any 3.3V AGP card into the AGP slot. A 478-pin surface mount, Zero Insertion Force (ZIF) socket called the Intel Memory Controller Hub (MCH) is present on the +5V standby lead (+5VSB). 5 Floppy disk connector. The MCH provides the processor interface, system... ATX +12V power supply. One side of the connector is used if you don't have at least 1A on PCB R1.05 or later versions.) ASUS P4B-LS motherboard user guide 1-5 This Accelerated Graphics Port (AGP) slot supports 1.5V AGP4X mode graphics cards for the floppy disk drive. This socket accommodates the Intel...
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... 30.5cm (12.0in) COM2 GAME_AUDIO Line Intel 845 Out Memory Line Controller In Hub (MCH) SECONDARY IDE Mic In MICF SPEAKER ATX12V Accelerated Graphics Port (AGP+1.5V) WARNING 01 23 45 ® P4B-LS SWITCH AAPANEL CD1 AUX Audio Codec PCI1 PCI2 PCI3 Intel I/O Controller... CLRCMOS CR2032 3V Lithium Cell CMOS Power SMART MODEM SPDIFOUT USB2 FUSB AUD_EN1 PCI4 LED1 ASUS Proprietary Expansion Slot PCI6 CNR Super I/O 2Mbit Firmware Hub JEN SPEECH CHASSIS SMB ASUS ASIC with Hardware Monitor SMARTCON CHA_FAN AFPANEL KBPWR PANEL Figure 2-2 Motherboard Layout The audio ...
... 30.5cm (12.0in) COM2 GAME_AUDIO Line Intel 845 Out Memory Line Controller In Hub (MCH) SECONDARY IDE Mic In MICF SPEAKER ATX12V Accelerated Graphics Port (AGP+1.5V) WARNING 01 23 45 ® P4B-LS SWITCH AAPANEL CD1 AUX Audio Codec PCI1 PCI2 PCI3 Intel I/O Controller... CLRCMOS CR2032 3V Lithium Cell CMOS Power SMART MODEM SPDIFOUT USB2 FUSB AUD_EN1 PCI4 LED1 ASUS Proprietary Expansion Slot PCI6 CNR Super I/O 2Mbit Firmware Hub JEN SPEECH CHASSIS SMB ASUS ASIC with Hardware Monitor SMARTCON CHA_FAN AFPANEL KBPWR PANEL Figure 2-2 Motherboard Layout The audio ...
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... that they fit in any of the following combinations. These sockets support up to avoid damaging the DIMM. 2.5.2 Memory configurations Install DIMMs in only one direction. DIMM Location 168-pin DIMM (SDR) Total Memory Socket 1 (Rows 0&1) 64MB, 128MB, 256MB, 512MB, 1GB x1 Socket 2 (Rows 2&3) 64MB, 128MB, ...= 2-10 Chapter 2: Hardware information DO NOT force a DIMM into a socket to 3GB system memory using unbuffered ECC or non-ECC PC100/133 DIMMs. 88 Pins ® P4B-LS 60 Pins P4B-LS 168-Pin DIMM Sockets 20 Pins Figure 2-13 DIMM Sockets Location and SDR DIMMs DIMMs are keyed...
... that they fit in any of the following combinations. These sockets support up to avoid damaging the DIMM. 2.5.2 Memory configurations Install DIMMs in only one direction. DIMM Location 168-pin DIMM (SDR) Total Memory Socket 1 (Rows 0&1) 64MB, 128MB, 256MB, 512MB, 1GB x1 Socket 2 (Rows 2&3) 64MB, 128MB, ...= 2-10 Chapter 2: Hardware information DO NOT force a DIMM into a socket to 3GB system memory using unbuffered ECC or non-ECC PC100/133 DIMMs. 88 Pins ® P4B-LS 60 Pins P4B-LS 168-Pin DIMM Sockets 20 Pins Figure 2-13 DIMM Sockets Location and SDR DIMMs DIMMs are keyed...
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Set to pins 1-2 to the system memory. SDRVOL ® P4B-LS 12 3.4 V (Default) 23 3.5 V 34 3.6 V P4B-LS SDR Voltage Setting Figure 2-28 SDRAM Voltage Settings 8. Speaker selector (SPEECH) (on audio models only) This jumper allows you to select the speaker you to select the voltage supplied to use for the ASUS POST Reporter™ function. SDRAM voltage...
Set to pins 1-2 to the system memory. SDRVOL ® P4B-LS 12 3.4 V (Default) 23 3.5 V 34 3.6 V P4B-LS SDR Voltage Setting Figure 2-28 SDRAM Voltage Settings 8. Speaker selector (SPEECH) (on audio models only) This jumper allows you to select the speaker you to select the voltage supplied to use for the ASUS POST Reporter™ function. SDRAM voltage...
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OVER_VOLT 12 23 ® P4B-LS Disable (Default) Enable P4B-LS OVER_VOLT Setting 10. To erase the RTC RAM: 1. Remove the battery. 3. Remove the jumper cap. 4. Clear RTC ...by the onboard button cell battery. Hold down the key during the boot process and enter BIOS setup to short the jumper. ASUS P4B-LS motherboard user guide 2-23 Refer to the CPU. It is present on PCB R1.05 or later versions.) Setting to a...as system passwords, is powered by erasing the CMOS RTC RAM data. You can clear the CMOS memory of +1.75V to +2.1V for a few seconds to re-enter data.
OVER_VOLT 12 23 ® P4B-LS Disable (Default) Enable P4B-LS OVER_VOLT Setting 10. To erase the RTC RAM: 1. Remove the battery. 3. Remove the jumper cap. 4. Clear RTC ...by the onboard button cell battery. Hold down the key during the boot process and enter BIOS setup to short the jumper. ASUS P4B-LS motherboard user guide 2-23 Refer to the CPU. It is present on PCB R1.05 or later versions.) Setting to a...as system passwords, is powered by erasing the CMOS RTC RAM data. You can clear the CMOS memory of +1.75V to +2.1V for a few seconds to re-enter data.
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...services through a Smart Card user interface software. ® P4B-LS NC2 GND RFU1 SCRCLK SCRFET# NC VCC SMARTCON 1 SCRRES# SCRUI RFU2 SCRREST NC LED P4B-LS Smartcard Figure 2-44 Smart Card Reader Connector 15. SD MS ® P4B-LS P4B-LS SD MS Connectors GND SDB1 +3V SDB2 SDB3 SDB4 SDB5 ...SDBCLK SDBPWCTL# SDBLED 1 GND MSDA1 +3V MSDA2 SDA3 SDA4 SDA5 SDACLK SDAPWCTL# SDALED 1 Figure 2-45 Secure Digital (SD) Memory Card and Memory Stick (MS) Connectors 2-32 Chapter 2: Hardware...
...services through a Smart Card user interface software. ® P4B-LS NC2 GND RFU1 SCRCLK SCRFET# NC VCC SMARTCON 1 SCRRES# SCRUI RFU2 SCRREST NC LED P4B-LS Smartcard Figure 2-44 Smart Card Reader Connector 15. SD MS ® P4B-LS P4B-LS SD MS Connectors GND SDB1 +3V SDB2 SDB3 SDB4 SDB5 ...SDBCLK SDBPWCTL# SDBLED 1 GND MSDA1 +3V MSDA2 SDA3 SDA4 SDA5 SDACLK SDAPWCTL# SDALED 1 Figure 2-45 Secure Digital (SD) Memory Card and Memory Stick (MS) Connectors 2-32 Chapter 2: Hardware...
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... surge protector. 5. System running , the BIOS beeps or additional messages appear on the screen. You will not hear the BIOS beeps when the ASUS POST Reporter is enabled. After making all switches are off. 3. For ATX power supplies, the system LED lights up when you need to enter...is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated; Turn on the front of the system chassis. 4. ASUS P4B-LS motherboard user guide 3-1 Monitor b. Award BIOS Beep Codes Beep One short beep when displaying logo Long ...
... surge protector. 5. System running , the BIOS beeps or additional messages appear on the screen. You will not hear the BIOS beeps when the ASUS POST Reporter is enabled. After making all switches are off. 3. For ATX power supplies, the system LED lights up when you need to enter...is working Meaning No error during POST No DRAM installed or detected Video card not found or video card memory bad CPU overheated; Turn on the front of the system chassis. 4. ASUS P4B-LS motherboard user guide 3-1 Monitor b. Award BIOS Beep Codes Beep One short beep when displaying logo Long ...
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...VGA test • Install a PCI VGA card into one of the default POST messages and their corresponding actions, if any. System failed memory test • Install 168-pin unbuffered PC133 DIMMs into the DIMM sockets. • Check if the DIMMs on the DIMM sockets are ...3.2 Vocal POST Messages This motherboard includes the Winbond speech controller to section "2.7 Switches and jumpers." 3-2 Chapter 3: Powering up See the "ASUS contact information" on installing a DIMM. These POST messages are not defective. • Refer to replace the default messages. System failed CPU...
...VGA test • Install a PCI VGA card into one of the default POST messages and their corresponding actions, if any. System failed memory test • Install 168-pin unbuffered PC133 DIMMs into the DIMM sockets. • Check if the DIMMs on the DIMM sockets are ...3.2 Vocal POST Messages This motherboard includes the Winbond speech controller to section "2.7 Switches and jumpers." 3-2 Chapter 3: Powering up See the "ASUS contact information" on installing a DIMM. These POST messages are not defective. • Refer to replace the default messages. System failed CPU...
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... mode. Type FORMAT A:/S at the DOS prompt to reinstall the BIOS later. AFLASH works only in case you reboot using a floppy disk. 3. ASUS P4B-LS motherboard user guide 4-1 Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is a Flash Memory Writer utility that you need to create a bootable system disk. Reboot the computer from the hard drive.
... mode. Type FORMAT A:/S at the DOS prompt to reinstall the BIOS later. AFLASH works only in case you reboot using a floppy disk. 3. ASUS P4B-LS motherboard user guide 4-1 Type COPY D:\AFLASH\AFLASH.EXE A:\ (assuming D is a Flash Memory Writer utility that you need to create a bootable system disk. Reboot the computer from the hard drive.
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When the programming is not able to the boot disk. If the Flash Memory Writer utility is done, the message "Flashed Successfully" appears. 8. 7. If you saved to successfully update a complete BIOS file, the system may cause boot problems. Just ... persists, load the original BIOS file you encounter problems while updating the new BIOS, DO NOT turn off the system because this happens, call the ASUS service center for support. 4-4 Chapter 4: BIOS Setup The utility starts to continue. The boot block is updated automatically only when necessary. If this may not...
When the programming is not able to the boot disk. If the Flash Memory Writer utility is done, the message "Flashed Successfully" appears. 8. 7. If you saved to successfully update a complete BIOS file, the system may cause boot problems. Just ... persists, load the original BIOS file you encounter problems while updating the new BIOS, DO NOT turn off the system because this happens, call the ASUS service center for support. 4-4 Chapter 4: BIOS Setup The utility starts to continue. The boot block is updated automatically only when necessary. If this may not...
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...a Supervisor password, anyone can clear it by the onboard button cell battery. Halt On [All Errors] This field specifies the types of conventional memory detected by the system during system startup. Language [English] This field displays the BIOS language version. See section "2.7 Switches and jumpers" for ... field and press . Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/Keyboard] Installed Memory [XXX MB] This field automatically displays the amount of errors that will cause the system to erase the RTC RAM. The RAM data containing the...
...a Supervisor password, anyone can clear it by the onboard button cell battery. Halt On [All Errors] This field specifies the types of conventional memory detected by the system during system startup. Language [English] This field displays the BIOS language version. See section "2.7 Switches and jumpers" for ... field and press . Configuration options: [All Errors] [No Error] [All but Keyboard] [All but Disk] [All but Disk/Keyboard] Installed Memory [XXX MB] This field automatically displays the amount of errors that will cause the system to erase the RTC RAM. The RAM data containing the...
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...) and external frequency. CPU Frequency (MHz) (when CPU Speed is locked, you cannot access this field. Configuration options: [Auto] [1:1] [3:4] ASUS P4B-LS motherboard user guide 4-15 Note that appear in the popup menu vary according to the CPU Frequency (MHz). If your processor frequency multiple is set... of the CPU. Set this field allows you want to make changes to the two subsequent fields. CPU/Memory Frequency Ratio [Auto] This field determines whether the memory clock frequency is for unlocked processors only. CPU Frequency Multiple (when CPU Speed is set to [Manual])...
...) and external frequency. CPU Frequency (MHz) (when CPU Speed is locked, you cannot access this field. Configuration options: [Auto] [1:1] [3:4] ASUS P4B-LS motherboard user guide 4-15 Note that appear in the popup menu vary according to the CPU Frequency (MHz). If your processor frequency multiple is set... of the CPU. Set this field allows you want to make changes to the two subsequent fields. CPU/Memory Frequency Ratio [Auto] This field determines whether the memory clock frequency is for unlocked processors only. CPU Frequency Multiple (when CPU Speed is set to [Manual])...
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... motherboard supports Universal Serial Bus (USB) devices. Otherwise, leave to [Disabled], the USB controller legacy mode is enabled. Configuration options: [Disabled] [Enabled] [Auto] OS/2 Onboard Memory > 64M [Disabled] When using a USB device. If detected, the USB controller legacy mode is disabled whether or not you set this field to the default... need to set this option to [Enabled], BIOS reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Disabled] [Enabled] 4.4.1 Chip Configuration ASUS P4B-LS motherboard user guide 4-17
... motherboard supports Universal Serial Bus (USB) devices. Otherwise, leave to [Disabled], the USB controller legacy mode is enabled. Configuration options: [Disabled] [Enabled] [Auto] OS/2 Onboard Memory > 64M [Disabled] When using a USB device. If detected, the USB controller legacy mode is disabled whether or not you set this field to the default... need to set this option to [Enabled], BIOS reserves IRQ12, whether or not a PS/2 mouse is detected at startup. Configuration options: [Disabled] [Enabled] 4.4.1 Chip Configuration ASUS P4B-LS motherboard user guide 4-17
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... Defined]. SDRAM Active Precharge Delay [6T] This item controls the number os SDRAM clocks used for items 2-5, depending on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. The SDRAM RAS to CAS Delay parameter appears only when you set the... Configuration to [User Defined]. The SDRAM RAS Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined]. The EEPROM on the memory modules that you are using.
... Defined]. SDRAM Active Precharge Delay [6T] This item controls the number os SDRAM clocks used for items 2-5, depending on the memory module stores critical information about the module, such as memory type, size, speed, voltage interface, and module banks. The SDRAM RAS to CAS Delay parameter appears only when you set the... Configuration to [User Defined]. The SDRAM RAS Precharge Delay parameter appears only when you set the SDRAM Configuration to [User Defined]. The EEPROM on the memory modules that you are using.
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... memory for ISA expansion cards. Configuration options: [Enabled] [Disabled] Onboard PCI IDE [Both] This field allows you to enable either the primary IDE channel or secondary IDE channel, or both channels to [Disabled]. Configuration options: [Both] [Primary] [Secondary] [Disabled] ASUS P4B-LS ...the turbo settings, return to 16MB. AGP 4X is backward-compatible, so you may not boot. Expansion cards can only access memory up to the default setting [Normal]. This process normally consumes about 50-60 PCI clocks without PCI delayed transaction. Configuration options:...
... memory for ISA expansion cards. Configuration options: [Enabled] [Disabled] Onboard PCI IDE [Both] This field allows you to enable either the primary IDE channel or secondary IDE channel, or both channels to [Disabled]. Configuration options: [Both] [Primary] [Secondary] [Disabled] ASUS P4B-LS ...the turbo settings, return to 16MB. AGP 4X is backward-compatible, so you may not boot. Expansion cards can only access memory up to the default setting [Normal]. This process normally consumes about 50-60 PCI clocks without PCI delayed transaction. Configuration options:...
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...is detected, the controller is enabled; Configuration options: [Disabled] [Auto] Speech POST Reporter [Enabled] This field enables or disables the ASUS POST Reporter™ feature. Configuration options: [1] [3] Onboard Game Port [200H-207H] This field allows you select [ECP] or [... you to select the I /O address for the selected ECP mode. Configuration options: [Disabled] [Enabled] ASUS P4B-LS motherboard user guide 4-21 Configuration options: [Disabled] [Memory Stick] [Secure Digital] Onboard AC97 Audio Controller [Auto] Onboard AC97 Modem Controller [Auto] [Auto] allows...
...is detected, the controller is enabled; Configuration options: [Disabled] [Auto] Speech POST Reporter [Enabled] This field enables or disables the ASUS POST Reporter™ feature. Configuration options: [1] [3] Onboard Game Port [200H-207H] This field allows you select [ECP] or [... you to select the I /O address for the selected ECP mode. Configuration options: [Disabled] [Enabled] ASUS P4B-LS motherboard user guide 4-21 Configuration options: [Disabled] [Memory Stick] [Secure Digital] Onboard AC97 Audio Controller [Auto] Onboard AC97 Modem Controller [Auto] [Auto] allows...
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... digital files and other data. The device driver allows you can run in the software menu. 5.2.6 ASUS Contact Information Clicking the ASUS Contact Information button displays as stated. Winbond Memory Stick Storage Device Driver This item installs the Memory Stick (MS) device driver. Winbond Secure Digital Storage (SD/MMC) Device Driver This item installs...
... digital files and other data. The device driver allows you can run in the software menu. 5.2.6 ASUS Contact Information Clicking the ASUS Contact Information button displays as stated. Winbond Memory Stick Storage Device Driver This item installs the Memory Stick (MS) device driver. Winbond Secure Digital Storage (SD/MMC) Device Driver This item installs...