40.776 bytes

Service Hints & Tips

Document ID: DDSE-3U6MMW

PC Server 520 - System board locations / jumper settings (8641-EZ0)

Applicable to: World-Wide

System Board Locations:

System Board Connections

Header

Configuration

Connect To

W12/W31

Speaker

Speaker

W18/W37

Power LED

Pins 1-3

W24/W38

IDE Hard Drive LED

IDE Hard Drive

W35

CPU Fan Connector

Fan

W36

CPU Fan Connector

Fan

J1/J2/J26

Power Supply Connector

P1 to J1
P2 to J2
P3 to J26

J6

Mouse Connector

Mouse

J8

Keyboard Connector

Keyboard

J9

Parallel Port Connector

Parallel Device

J10

Floppy Drive Connector

Diskette Drive

J11

Serial Port COMM A Connector

Serial Device

J12

Serial Port COMM B Connector

Serial Device

J13

ISA IDE Connector

IDE Hard Drive

N/A

SCSI LED

SCSI Option Card

N/A

SCSI Device Connector

SCSI Option Card




System Board Jumpers

Jumper

Description

Setting

W1

L1 Cache Mode

Open - L1 Write-Back (Default)

Closed - L1 Write-Through

W2

Reserved

Open

W5

L2 Cache Size

Pins 1-2 - L2 Cache Size = 256K (Default)

Pins 2-3 - L2 Cache Size = 512K

W6

CPU Clock

Pins 1-2 Pentium 60/90MHz

Pins 2-3 Pentium 66/100MHz

W10

Reserved

Pins 2-3 (Default)

W16

Reserved

Pins 1-2 (Default)

W17

Reserved

Closed (Default)

W20

Monitor Selection

Open - Monochrome Monitor Setting

Closed - Color Monitor Setting (Default)

W21

Reserved

Open - AT Style Keyboard

Closed - PS/2 Style Keyboard and Mouse (Default)

W22

Reserved

Open (Default)

W23

Reserved

Open (Default)

W25

ISQ IDE IRQ Select

Pins 1-2 - ISA IDE using IRQ 14 Primary IDE Controller (Default)

Pins 2-3 - ISA IDE using IRQ 15 Secondary Controller

W30

Reserved

Open (Default)



Search Keywords

Hint Category

Hardware Maintenance Information, Processors

Date Created

23-08-96

Last Updated

02-03-99

Revision Date

02-03-2000

Brand

IBM PC Server

Product Family

PC Server 520

Machine Type

8641

Model

EZ0

TypeModel

Retain Tip (if applicable)

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