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Acer 900 User Manual

Acer altos 900 server: user guide
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System Board

1.1
Features
This high-performance system board is designed to support the Intel
P54C and P55C CPUs running at 75/100/120/133/150/166/200 MHz.
It utilizes both the EISA and the PCI local bus architecture. Three
EISA and four PCI bus slots reside on the board to allow installation
of either master or slave devices, except for one PCI slot that
supports only slave devices.
The board has three memory banks composed of two 72-pin SIMM
sockets each that support a maximum system memory of 192 MB
using 32-MB SIMMs. The SIMM sockets support both EDO and fast-
page mode SIMMs. A second-level cache socket is available for a
256-KB or 512-KB synchronous SRAM module.
A 50-pin Fast SCSI-II interface with 10 MB/s transfer rate and a 68-
pin Wide SCSI interface that transfers at 20 MB/s (Wide SCSI) and
40 MB/s (Ultra SCSI) come with the system board to connect SCSI
devices. Standard I/O features such as two serial interfaces (COM1,
COM2), one parallel port interface, an IDE drive interface, a diskette
drive interface, and PS/2 mouse and keyboard connectors reside on
the system board.
The system board supports two optional features, the ASM Pro and
the Remote Diagnostic Management (RDM) for better server
management. These features maximize the system operating time
by minimizing the downtime.
System Board
      
      
      
      
1-1

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  Summary of Contents for Acer 900

  • Page 1: System Board

    System Board Features This high-performance system board is designed to support the Intel P54C and P55C CPUs running at 75/100/120/133/150/166/200 MHz. It utilizes both the EISA and the PCI local bus architecture. Three EISA and four PCI bus slots reside on the board to allow installation of either master or slave devices, except for one PCI slot that supports only slave devices.
  • Page 2: Major Components

    Major Components The system board has the following major components: One zero-insertion force (ZIF) socket for Intel P54C or P55C Three memory banks (Bank 1 to Bank 3) composed of six 72-pin SIMM sockets Synchronous cache module socket that supports 256 KB and 512 KB second-level cache Three EISA and four PCI expansion slots 256-KB Flash ROM for system BIOS...
  • Page 3: System Board Layout

    1.2.1 System Board Layout 1 PS/2 keyboard connector 2 PS/2 mouse connector 3 PCI slots 4 Keyboard controller 5 EISA slots 6 Video RAM 7 Video RAM upgrade socket Figure 1-1 System Board Layout System Board 8 CPU voltage regulator 9 Buzzer CPU socket CPU voltage regulator...
  • Page 4: Jumper And Connector Locations

    Jumpers and Connectors 1.3.1 Jumper and Connector Locations Figure 1-2 shows the jumper locations on the system board. The blackened pin on a jumper represents pin 1. Figure 1-2 Jumper Locations Jumpers are prefixed “JP”. Connectors are prefixed “CN”. FA1 to FA5 are fan connectors.
  • Page 5: Jumper Settings

    SCSI Selection JP20 1-2* Onboard VGA JP23 1-2* Default setting System Board Function 256 KB 512 KB Acer Generic Enabled Bypass Buzzer Speaker Enabled Disabled P55C CPU P54C CPU PCI device ID is 11 Hex PCI device ID is 0C Hex...
  • Page 6 Table 1-1 Jumper Settings (continued) Jumper Setting SCSI Termination JP24 1-2* Core/Bus Freq. JP4, JP5, JP7 Function High-byte terminator ON High-byte terminator OFF Bus Freq. Core Freq. Ratio 50 MHz 75 MHz 60 MHz 150 MHz 60 MHz 120 MHz 60 MHz 90 MHz 66 MHz...
  • Page 7: Connector Functions

    1.3.3 Connector Functions Table 1-2 lists the different connectors on the system board and their respective functions. Table 1-2 Connector Functions Connector COM1 COM2 Power connector for 200-watt SPS Power connector for 300-watt SPS Parallel port connector Diskette drive connector IDE drives connector Remote diagnostic module (RDM) connector Remote diagnostic module (RDM) connector...
  • Page 8: Esd Precautions

    ESD Precautions Always observe following precautions before installing any system component: Do not remove any system component from its packaging unless 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 9 Installing a VGA Daughter Board The system board comes with a video controller, a video connector, and a VGA daughter board. These components save you the trouble of buying a video board and save one bus slot for another expansion board.
  • Page 10: Cpu Upgrade

    CPU Upgrade The system board comes with a zero-insertion force (ZIF) CPU socket for easy installation. Follow these steps to install a Pentium CPU: Pull up the socket lever. Insert the CPU, making sure that the pin 1 of the CPU connects to pin 1 of the socket.
  • Page 11 Place the CPU heat sink and fan over the CPU. Link the front heat sink hook to the holding tab on the front edge of the CPU socket, then the rear hook to the rear holding tab. This locks the heat sink and fan to the CPU socket. Heat Sink Hook (rear) Holding Tab (front) Figure 1-6...
  • Page 12: Memory Upgrade

    Memory Upgrade The six 72-pin SIMM sockets onboard support both Extended Data Output (EDO) and fast-page mode SIMMs. You may install 4-MB and 16-MB single-density as well as 8-MB, and 32-MB double-density SIMMs for a total of 192-MB system memory. The SIMM sockets also support 64-MB SIMMs, when available, to achieve 384-MB system memory.
  • Page 13: Memory Configurations

    1.7.2 Memory Configurations Table 1-3 lists the available memory configurations. Table 1-3 Memory Configurations Bank 1 Bank 2 4 MB 4 MB 8 MB 8 MB 8 MB 8 MB 4 MB 4 MB 8 MB 8 MB 8 MB 8 MB 16 MB 16 MB...
  • Page 14: Installing A Simm

    1.7.3 Installing a SIMM Follow these steps to install a SIMM: Carefully slip a SIMM at a 45 angle into a socket making sure that the curved edge indicating the pin 1 of the SIMM matches pin 1 of the socket. A SIMM fits only in one direction.
  • Page 15: Removing A Simm

    1.7.4 Removing a SIMM Follow these steps to remove a SIMM: Press the holding clips on both sides of the SIMM outward to release it. Push the SIMM downward to a 45 Pull the SIMM out of the socket. Figure 1-8 Removing a SIMM System Board angle.
  • Page 16: Reconfiguring The System

    1.7.5 Reconfiguring the System Reconfigure the system after installing or removing SIMMs. Follow these steps to reconfigure the system: Reboot the system. A memory error message appears, indicating that the total memory does not match the value stored in CMOS. Press during the power-on self-test (POST) routine to run Setup.
  • Page 17 Second-level Cache Upgrade The system supports synchronous pipeline burst second-level cache. The system board has an exclusive 160-pin socket for the synchronous pipeline burst cache module. The cache module socket supports either a 256 KB or 512 KB 3.3V cache module. Follow these steps to install a cache module: Position the cache module on top of the socket such that its component side faces the CPU.
  • Page 18: Video Memory Upgrade

    Video Memory Upgrade Larger video memory allows you to display higher resolutions and more colors. The system board comes with a 512-KB video memory onboard upgradable to 1 MB. Follow these steps to upgrade the video memory: Locate the video DRAM upgrade socket labeled U44 on the system board.
  • Page 19: Using The Scsi Feature

    1.10 SCSI Feature The system board features a single-chip SCSI host adapter that adds SCSI I/O capability to the system. The chipset consists of an onboard microcontroller, bus master interface controller, and SCSI controllers. A 50-pin Fast SCSI-II interface with 10 MB/s transfer rate and a 68-pin Wide SCSI interface that transfers at 20 MB/s (Wide SCSI) and 40 MB/s (Ultra SCSI) are also onboard to accommodate various SCSI devices.
  • Page 20: Server Management Features

    1.11 Server Management Features 1.11.1 Remote Diagnostic Management Remote Diagnostic Management (RDM) management tool that utilizes modems and telephone lines to control a host of servers from a remote station. It monitors and analyzes the server condition, updates the BIOS settings if necessary, or reboots the server in the event of failure and quickly return it to normal operation.
  • Page 21: Software Error Messages

    1.12 Error Messages Do not continue using the computer if you receive an error message of any type. Note the message and take corrective action. section describes the types of error messages and lists their corresponding corrective measures. There are two general types of error messages: Software System 1.12.1...
  • Page 22 Table 1-4 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 1-4 System Error Messages (continued) Message Memory Size Mismatch CPU Clock Mismatch Onboard Serial Port 1 Conflict Onboard Serial Port 2 Conflict Onboard Parallel Port Conflict Pointing Device Error Pointing Device Interface Error Press F1 key to continue or Ctrl-Alt-Esc for Setup Real Time Clock Error System Board...
  • Page 24: Correcting Error Conditions

    1.12.3 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.