Interlock Led Indicators; System Board Interlock - Compaq ProLiant 6400R Maintenance And Service Manual

4-16 Compaq ProLiant 6400R Maintenance and Service Guide

Interlock LED Indicators

Improperly seated components in the interlock chain will cause the LED associated with the
fault origination point to illuminate on the system board. The following figure and table show
the location of the interlock LEDs and give the corresponding faults.
IMPORTANT: This server is not equipped with chassis interlocks.
Figure 4-15. Interlock LEDs on system board
Memory CPU4 CPU3
Off Off Off
Off Off Off
Off Off Off
Off Off Off
Off Off Off
Off Off On
Off On On
On On On
Note: Only the left LED in any row can provide a valid indication of error. After ensuring that the server is powered down and
power cables are disconnected from all power supplies, reseat the device associated with the left LED.
Table 4-13
System Board Interlock LED Indicators
CPU2 CPU1 I/O
Off Off Off
Off Off Off
Off Off On
Off On On
On On On
On On On
On On On
On On On
MISC Fault of Interlock Error
Off No interlock error
On Miscellaneous cable
On Peripheral board
On Processor 1
On Processor 2
On Processor 3
On Processor 4
On Memory board