IBM 440 manual Light Path Diagnostics panel on

FAN

DA

CPU

PCI

MEMORYSD

1

BUS

T

EM

2

S PO

WE

P

UPPLYR

NMI

B

OAR

V

RM

EVENT

D

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ON

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Light Path

CPU

Diagnostics™

MEMORY

DASD

PCI-X BUS

NMI

BOARD

FAN

TEMP

EVENT LOG

1 POWER

VRM

2 SUPPLY

NON REDUND

OVER SPEC

REMIND

Figure 1-14 Light Path Diagnostics panel on the x440

The Light Path Diagnostics on the x440 has three levels:

1.Level 1 is the pop-out panel as shown in Figure 1-14.

2.For further investigation, there are Light Path Diagnostics LEDs visible through the top of the server. This requires the server to be slid out of the rack.

3.For the third level of diagnostics, LEDs on the planar indicates the component causing the error.

The pop-out panel (Figure 1-14) also has a Remind button. This places the front panel system-error LED into remind mode, which means it flashes briefly every 2 seconds. By pressing the button, you acknowledge the failure but indicate that you will not take immediate action. If a new failure occurs, the system-error LED will turn on again. The system-error LED remains in the Remind mode until one of the following situations occurs:

￿All known problems are resolved

￿The system is restarted

￿A new problem occurs, at which time it then is illuminated continuously

26 IBM ^xSeries 440 Planning and Installation Guide