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Acer V50LA User Manual

Acer v50la motherboards: user guide
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& K D S W H U


System Board

The V50LA is a high-performance system board with a 64-bit
architecture.
It supports the new Intel P54C, P54CQS, P54CS,
P54CT, and P55C CPUs running at 75/90/100/120/133/150 MHz and
utilizes the Peripheral Component Interconnect (PCI) local bus
architecture. The PCI local bus maximizes the system performance
by enabling high-speed peripherals to match the speed of the
microprocessor with its 120 MB or 132 MB per second transfer rate in
burst mode.
The board incorporates a Sound Blaster Pro-compatible audio
subsystem that consists of CD-audio, WaveTable, and fax/modem
line-in interfaces. A standard 1-MB video DRAM comes onboard and
is upgradable up to 2 MB. Two DRAM banks composed of four 72-pin
sockets come with the board to support single- and double-density
SIMMs for a maximum system memory of 128 MB.
The SIMM
sockets accommodate both the standard page mode and extended
data output (EDO) type SIMMs. The board supports a standard 256-
KB asynchronous or an optional 256-KB pipeline burst mode second-
level cache.
The system board includes a 188-pin connector for the slot board that
contains the PCI and ISA bus slots. The two onboard PCI-enhanced
IDE interfaces with a zero-wait state and 16.6 MB per second transfer
rate support up to four IDE devices. Onboard I/O interfaces comprise
of two UART 16550 serial ports, a parallel port with ECP/EPP feature,
and PS/2 keyboard and mouse ports.
System Board
1-1

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  Summary of Contents for Acer V50LA

  • Page 1: System Board

    & K D S W H U System Board The V50LA is a high-performance system board with a 64-bit architecture. It supports the new Intel P54C, P54CQS, P54CS, P54CT, and P55C CPUs running at 75/90/100/120/133/150 MHz and utilizes the Peripheral Component Interconnect (PCI) local bus architecture.
  • Page 2: Major Features

    Major Features The system board has the following major features: A zero-insertion force (ZIF) socket for P54C, P54CTB, or P54CS CPU Two DRAM banks composed of four 72-pin SIMM sockets that support 4/8/16/32-MB 60/70ns SIMMs 256-KB write-back asynchronous second-level cache 128-KB boot block mode Flash ROM for system and VGA BIOS Two PCI-enhanced IDE interfaces that support up to four IDE devices...
  • Page 3 1.1.1 Layout Figure 1-1 shows the locations of the system board major components. Second-level cache Buzzer CPU voltage regulator Fan connector SIMM sockets 321-pin ZIF CPU socket 3.3V battery Video memory upgrade sockets Onboard video memory Video port Figure 1-1 System Board Layout System Board Parallel port...
  • Page 4 1.1.2 Slot Board The system board comes with a slot board already installed. The slot board carries the PCI and ISA bus slots for system enhancements and future expansion. The slot board may vary in size and layout depending on your system housing.
  • Page 5: Jumper And Connector Locations

    Jumpers and Connectors 1.2.1 Jumper and Connector Locations Figure 1-4 shows the jumper and connector locations on the system board. Figure 1-4 System Board Jumper and Connector Locations Jumpers are prefixed “JP”. Connectors are prefixed “CN”. The blackened pin of a jumper represents pin 1.
  • Page 6: Jumper Settings

    Default setting The boot block feature works only for Intel 28F001 Flash ROM and requires JP5 to be set to pins 2-3. Function For models with Acer BIOS For models with OEM BIOS Check password Bypass password (For Intel 28F001 only)
  • Page 7 Table 1-1 System Board Jumper Settings (continued) Jumper Setting CPU Type 1-2* CPU Core / Local Bus Clock Ratio JP16, JP19 , 1-2* 1-2, 2-3 2-3, 1-2 2-3, 2-3 CPU Voltage JP21 1-2* LED Support JP23 2-3* The jumpers JP10 ~ JP15 and JP17 are always closed if there is no voltage regulator module (VRM) present.
  • Page 8: Connector Functions

    1.2.3 Connector Functions Table 1-2 lists the different connectors on the system board and their respective functions. Table 1-2 Connector Functions Connector Audio-I/O board connector Fax/voice modem connector Video feature connector WaveTable connector CD-audio line-in connector Feature connector for multimedia or Ethernet solution IDE channel 1 IDE channel 2...
  • Page 9: Reset Switch

    The multifunction connector CN14 accommodates the front panel connectors for speaker, LEDs, keylock, reset, and turbo. Figure 1-5 shows the CN14 pin assignments for each of the front panel connectors. Figure 1-5 20-Pin Multifunction Connector (CN14) The connector CNX1 functions as SMM switch, as reset switch, or both, depending on the settings.
  • Page 10: Esd Precautions

    ESD Precautions Always observe following precautions before installing a system component: Do not remove a component from its antistatic packaging until you are ready to install it. Wear a wrist grounding strap before handling electronic components. Wrist grounding straps are available at most electronic component stores.
  • Page 11: Memory Upgrade

    Memory Upgrade The system board comes with four 72-pin SIMM sockets that support 4-MB and 16-MB single-density SIMMs and 8-MB and 32-MB double- density SIMMs. Table 1-3 lists the possible memory configurations. Table 1-3 Memory Configurations Bank 0 SIMM-1 SIMM-2 SIMM-3 4 MB 4 MB...
  • Page 12: Installing A Simm

    1.4.1 Installing a SIMM Follow these steps to install a SIMM: Slip a SIMM at a 45 angle with the component side facing down into the socket labeled SIMM-1. Be careful when inserting SIMMs to avoid damaging the SIMM or the socket. Gently press the SIMM up until the pegs of the socket fit into the holes on the SIMM and the holding clips lock the SIMM into position.
  • Page 13: Removing A Simm

    1.4.2 Removing a SIMM Follow these steps to remove a SIMM: Press the holding clips on both sides of the SIMM outward to release it. Figure 1-8 Removing a SIMM Move the SIMM to a 45 angle. Pull the SIMM out of the socket. Always remove SIMMs from the socket labeled SIMM-4, then SIMM-3, and so on.
  • Page 14: Reconfiguring The System

    1.4.3 Reconfiguring the System You must enter Setup after installing or removing SIMMs to reconfigure the system. Follow these steps to reconfigure the system: Turn the system on. A memory error message appears, indicating that the total memory does not match the value stored in CMOS.
  • Page 15: Cpu Installation

    CPU Installation The system board comes with a zero-insertion force (ZIF) CPU socket for easy installation. Follow these steps to install a Pentium CPU: Lift up the socket lever. Insert the CPU to the socket. Make sure that the notched corner of the CPU matches the pin 1 indicator on the socket.
  • Page 16: Video Memory Upgrade

    Video Memory Upgrade Larger video memory allows you to display higher resolutions and more colors. The system board comes with a 1-MB video memory onboard upgradable to 2 MB. Follow these steps to upgrade the video memory: Locate the video DRAM upgrade sockets labeled U5 and U6 on the system board.
  • Page 17 Audio Functions and Options The system board supports Sound Blaster Pro-compatible sound system. It has four connectors onboard to accommodate the audio- I/O board, WaveTable, CD-ROM, and fax-voice modem. Figure 1-11 shows the four audio connectors on the system board. Fax/voice modem connector Audio-I/O board connector WaveTable connector...
  • Page 18 1.8.1 Audio-I/O Board Features The audio-I/O board consists of microphone port, line-in port, line-out port, and MIDI/game port. These ports accommodate the external audio devices. The system board supports two types of audio-I/O board. Figures 1-12 and 1-13 show the different audio-I/O boards that may come with the system.
  • Page 19 Microphone Connector Line-in Connector Microphone Port Line-in Port Line-out Port MIDI/Game Port Line-out Connector Figure 1-13 Audio-I/O Board With Internal Connectors The audio-I/O board with internal connectors is particularly useful for system housings with built-in speakers, microphone, amplifier, or auxiliary devices. With the internal audio connectors functioning exactly as the external audio ports, you can utilize all the sound features supported by the system board.
  • Page 20 1.8.2 Audio-I/O Devices Figure 1-14 shows the various devices that you can connect to the audio-I/O board. Microphone Synthesizer CD Player Stereo Amplifier Head phones Speakers Joystick MIDI Adapter Figure 1-14 Audio I/O External Devices 1-20 User’s Guide...
  • Page 21: Software Error Messages

    Error Messages Do not continue using the computer if you receive an error message of any type. Note the message and take corrective action. This section explains the different types of error messages and corresponding corrective measures. There are two general types of error messages: Software System 1.9.1...
  • Page 22 Table 1-5 System Error Messages Message CMOS Battery Error CMOS Checksum Error Display Card Mismatch Diskette Drive Controller Error or Not Installed Diskette Drive Error Diskette Drive A Type Mismatch Diskette Drive B Type Mismatch Equipment Configuration Error Hard disk Controller Error Hard disk 0 Error Hard disk 1 Error Keyboard Error or No...
  • Page 23 Table 1-5 System Error Messages (continued) Message Memory Error at: MMMM:SSSS:OOO (W:XXXX, R:YYYY) where: M: MB, S: Segment, O: Offset, X/Y: write/read pattern CPU Clock Mismatch Onboard Serial Port 1 Conflict Onboard Serial Port 2 Conflict Onboard Parallel Port Conflict Pointing Device Error Pointing Device Interface Error...
  • Page 24: Correcting Error Conditions

    1.9.3 Correcting Error Conditions As a general rule, if an error message says "Press F1 to continue," it is caused by a configuration problem, which can be easily corrected. An equipment malfunction is more likely to cause a fatal error, i.e., an error that causes complete system failure.