Midplane board connectors and LEDs

The following illustration shows the connectors on the midplane board.

Force power-on

Memory connector

connector

Microprocessor

 

3.3V VRM

connector

 

connector

Microprocessor

Force NMI switch

power

 

Light Path

connector

card connector

 

Power backplane

Midplane thumbscrews

signal connector

 

SCSI backplane and

 

I2C connector

 

Power backplane

 

ground connector

 

Power backplane

 

12V connector

 

The following illustration shows the LEDs on the midplane board.

I/O board error LED

Remote Supervisor Adapter error LED

DMC heartbeat LED

Machine check

abort initiatedPCI-X planer board error LED (NMI) LED

 

Midplane board error LED

VRM error

Processor board error LED

LED

 

 

Memory board error LED

Diagnostic

 

display

 

Midplane power good LED

84IBM xSeries 450 Type 8688: Hardware Maintenance Manual and Troubleshooting Guide

Page 94
Image 94
IBM 8688 manual Midplane board connectors and LEDs, Following illustration shows the LEDs on the midplane board