Acorp 6LX87 Mainboard

Package Checklist

Please check that your package is complete. If you discover any item damaged or missed, please contact your retailer.

• The 6LX87 mainboard.
• 1 x IDE ribbon cable.
• 1 x floppy ribbon cable.
• 6LX87 support software (option):
  • Flash Memory Write utility to update the FLASH BIOS.
  • LAN Desk Client Manager (LDCM) Software.
  • GL520 Hardware monitor AP.
  • Technical Support Form.
  • This user's Manual

Features of the 6LX87 Mainboard

The 6LX87 is seriously designed for the demanding PC user who wants many new key features processed by the fastest CPU in an economic package. This mainboard offers:

• New general CPU support: Intel Mendocino Celeron (300MHz-433MHz) processor.
• Intel Chipset: Intel 440 LX PCIset™ chips with I/O subsystems.
• Biggest memory capacity: Equipped with three DIMM sockets to support 16MB, 32MB, 64MB, 128MB, 256MB 168-pin 3.3v EDO RAM Modules. Maximum memory up to 768MB or 3.3v SDRAM. Maximum memory up to 768MB.
• AGP for fast VGA solution: AGP (Accelerator Graphic Port) will enhance & improve display performance and Application. The bus speed is 66/133 MHz.
• ISA & PCI Expansion Slots: Provides two 16-bit ISA, and three 32-bit PCI slots.
• PCI Bus Master IDE Controller: Features an onboard PCI Bus Master IDE controller with two connectors supporting four IDE devices in two channels. It enables faster data transfer and supports Enhanced IDE devices like Tape Backup and CD-ROM devices (ATAPI). Supports PIO modes 3 and 4 (16.6MB/sec.), and Ultra DMA/33 (33MB/Sec.). Also supports ZIP 100 and LS-120. BIOS supports IDE CD-ROM or SCSI bootup.
• Super Multi-I/O: Provides two high-speed UART serial compatible ports (match NS16C550A compatible) and one parallel port with SPP, EPP and ECP capabilities. UART2 can also be directed from COM2 to the Inferred Module for wireless connections. Two floppy drives of either 5.25" or 3.5" (1.25MB, 1.44MB or 2.88MB) are also supported without an external card.
• CPU Built-in Level 2 Cache: 128KB Pipeline Burst Level 2 cache in the Pentium Mendocino Celeron (Socket 370) cartridge.
• Advanced Configuration of Power Management Interface (ACPI): Supports ACPI function BIOS, allowing the System to control power management.
• Thermal detect (GL520) (Optional): The system's BIOS will sense CPU temperature through GL520 onboard. Users can monitor CPU temperature and CPU FAN status from Windows System (Win 95/98 environment).
• IrDa Port: Supports serial fast communication up to 115.2Kbps.
• Support Power on by modem/Alarm on/LAN Wake Up: Supports system power up from Modem ring up, timer, or LAN Wake Up. Requires enabling in BIOS settings.
• CPU FAN ON/OFF and LED indicator: Supports CPU FAN ON/OFF and LED indicator under SUSPEND mode.
• CPU temperature and Alarm system: Supports CPU temperature and alarm system with sound warnings.

Acorp 6LX87 Mainboard Layout

The mainboard features a standard layout with various slots and connectors:

• Expansion Slots: ISA SLOT (2x), PCI SLOT (3x), AGP SLOT (1x).
• Memory Slots: DIMM SLOT (3x 168-pin).
• Connectors: BIOS, Power connectors (PW1, PW2), IDE connectors (IDE1, IDE2), Floppy connector (FDC), Fan connectors (FAN1, FAN2, FAN3), USB connectors, Keyboard connector (KB1), Serial ports (COM1, COM2), Parallel port (PRINT), and other front panel headers.
• Chipset: Intel 440 LX PCIset.

Diagram Description: A visual representation of the motherboard showing the placement of all major components, slots, and connectors.

Installation

System Installation Setups

Before using your computer, complete the following steps:

1. Set jumpers on the mainboard.
2. Install SDRAM module.
3. Install the Socket 370 CPU Processor.
4. Connect Ribbon Cables, Cabinet Wires, and Power supply.
5. Install Add-on Cards.
6. Setup the BIOS software.

Static Electricity Precaution

To prevent damage from static discharge:

• Keep the mainboard and other system components in their anti-static packaging until ready for installation.
• Perform all preparatory work on a static-free surface with the mainboard components facing up.
• Unplug your computer when working on the inside.
• Wear an anti-static wrist strap.
• Hold system components, boards, or cards by their edges only.
• Be careful not to touch any IC chips, circuitry, contacts, or connections, especially gold contacts on the mainboard.

Expansion Slots and Connectors

Expansion Slots

• CPU Socket370
• 168-pin DIMM Socket
• AGP (Accelerated Graphic Port) SLOT
• PCI SLOT (3x 32-bit PCI)
• ISA SLOT (2x 16-bit ISA)

Connectors

Refer to pages for specific details:

• PW1/PW2: ATX/AT Power Connector
• PS2/Mouse: PS/2 Mouse port
• KB1: AT Keyboard port
• J2: USB Port
• COM1: COM 1 serial port
• PRINT: Parallel port
• COM2: COM 2 serial port
• FDC: Floppy connector
• IDE1: Primary IDE connector
• IDE2: Secondary IDE connector
• JP6: HDDLED, Reset Switch, Speaker Connector, Power LED, ATX Power switch
• J3: IrDA connector

System Memory (DIMM Module)

This mainboard supports three 168-pin DIMM (Dual Inline Memory Module) slots for 16MB, 32MB, 64MB, 128MB, 256MB modules, forming a memory size between 16MB to 256MB. The DRAM can be either 4.5ns, 50ns, or 60ns 3.3v SDRAM, and 3.3v Enhanced Data Output (EDO) RAM.

Memory Installation

Insert modules as shown. Modules fit only in the correct orientation due to pin breaks. SDRAM DIMM modules have different pin contacts on each side, resulting in higher pin density.

Diagram Description: A visual guide showing the 168-pin DIMM socket with pin counts indicated (60 pins, 20 pins, 88 pins) and the correct orientation for inserting a DIMM module.

Memory Banks and Capacity:

Notes:

• The DIMM slots do not support 5v EDO DIMM modules or 5v SDRAM DIMM modules.
• Memory speed setup is required via "Auto Configuration" in the BIOS chipset Setup. If different speed memories are used, set Auto Configuration to the lowest speed (e.g., 60ns if 50ns and 60ns are mixed).
• Any DIMM module can be placed in any DIMM slot, and modules of different capacities are allowed in all slots.

Clearance Requirements and Fan Exhaust

Clearance Requirements

To maintain proper airflow after processor installation, ensure adequate space clearances for the processor and fan heatsink. The clearance above the processor must be at least 0.3 inches. Clearance on at least 3 of 4 sides of the processor and fan heatsink must be at least 0.2 inches. All cables (for Floppy drive, Hard drive, CD-ROM, etc.) must be routed clear of the processor and its airspace.

Fan Exhaust

The processor must be kept cool using a heatsink and fan. The air temperature around the fan/heatsink cannot exceed 45°C (113°F). The ambient or room temperature must be below 37°C (99°F).

External Connectors

Ribbon cables and onboard connectors have direction indicators to prevent incorrect insertion. Always connect ribbon cables with the red stripe aligned to pin 1 of the connector.

Diagram Description: A visual layout of the motherboard's external connectors. Key connectors include:

• 9. IR Port: For infrared communication.
• 7. FAN 1,2,3 Connector: For CPU cooling fans.
• 5. Universal Serial Bus Port 1,2: For USB devices.
• 13. Wake On LAN: For LAN card activity.
• 4. Parallel Printer Port: For printers.
• 3. Serial Port COM 1,2: For serial devices.
• 2. PS/2 Mouse Port: For PS/2 mouse.
• 1. AT Keyboard Port: For AT keyboard.
• 6. Floppy Drive Connector: For floppy drives.
• 11. ATX Power Connector: For ATX power supply.
• 8. IDE Connector: For IDE devices.
• 10. JP6: Panel connector for various LEDs and switches.
• 12. SB-LINK: For Sound Blaster compatibility.

Jumpers and Panel Connectors

JP6 Panel Connector

This connector provides connections for the system's panel components:

• IDE Activity LED: Connects to the cabinet's IDE activity LED, which lights up during read/write operations.
• Power LED Lead (PANEL): Lights up when the system's power is on.
• SMI Suspend Switch Lead (PANEL): Allows manual system suspension or "Green" mode. Connects to a case-mounted suspend switch.
• SMI Suspend LED: (Description not detailed, likely indicates suspend status).
• Reset Switch Lead (PANEL): Connects to the case-mounted reset switch for rebooting without powering off.
• System Power LED (PANEL): Lights up when the system's power is on.
• Speaker Connector (PANEL): Connects to the case-mounted speaker for audio feedback.
• ATX Power Switch (PANEL): Connects to a momentary switch to turn the system ON. The system power LED lights up when the system is on.

ATX Power Supply Connector (PW1/PW2)

This 20-pin connector connects to an ATX power supply. The plug has a specific orientation for proper insertion.

IMPORTANT: Ensure the ATX power supply can provide at least 10mAmp load on the 5Volt standby lead (5VSB) to avoid powering-on difficulties.

PW2 Pinout:

PW1 Pinout:

CPU Cooling Fan (FAN/PWR) Connectors

These connectors support cooling fans of 500mAmp (6Watt) or less. Orient fans so heat sink fins allow airflow across the heatsinks, not expansion slots. Red wire is typically positive, black is ground. Connect with polarity in mind.

Diagram Description: Shows the layout of FAN1/2 and FAN3 connectors on the motherboard.

FAN1/2 CPU Cooling FAN Pinout:

FAN3 CPU Cooling FAN Pinout:

Note: The "Rotation" signal is for specially designed fans with rotation signal.

WARNING: CPU and/or motherboard overheating can occur if airflow is insufficient. Incorrect pin usage may damage components. Do not place jumper caps over these pins.

SB-LINK: J5

"SB-Link" is a standard from Creative to bridge the mainboard and PCI sound card for Sound Blaster 16 compatibility in DOS real-mode. This header uses Intel's PC/PCI technology.

Diagram Description: Shows the SB-Link connector with pinout.

SB-Link Connector Pinout:

Wake Up On LAN: J4

This connector links LAN cards for Wake On LAN functionality. LAN activity in soft-off mode can power on the system.

Diagram Description: Shows the Wake-On-LAN connector with pinout.

Wake-On-LAN Connector Pinout: