Light-Path Diagnostics; Diagnostics Panel Leds - IBM TotalStorage Network Attached Storage 300G User Reference

DASD1
DASD2
Figure 1. Diagnostics panel LEDs

Light-path diagnostics

Table 2 describes the light-path diagnostics LEDs. The system-error LED on the
operator information panel is lit when certain system errors occur. Table 2 helps
determine the cause of the error and the action you should take.
Table 2. Light-path diagnostics
Lit LED on
diagnostics
panel Cause
None The Advanced System Management Processor
has failed.
PS1 Power supply 1 has failed.
PS2 Power supply 2 has failed.
NON Power supply redundancy has been lost.
Note: This LED will not be lit if your appliance
has only one power supply; however, the power
is not redundant with only one power supply
installed.
OVER The system has exceeded the power capabilities
of the installed power supply.
NMI A nonmaskable interrupt occurred.
PS1
PS2
PS3
NON
OVER
NMI
TEMP
FAN
MEM
CPU
PCI A
PCI B
VRM
Action
Verify that the Advanced System Management
Processor LED on the system board is on. Have
the system serviced.
Replace power supply 1.
Replace power supply 2.
Check the PS1 and PS2 LEDs and replace the
indicated power supply. If neither LEDs is lit, you
can remove optional devices from the appliance
to restore power supply redundancy.
Remove optional devices from the appliance to
reduce the power requirements.
1. If the PCI A or PCI B LED is on, follow the
instructions for that LED.
2. If neither the PCI A or PCI B LED is on,
restart the appliance.
If the problem persists, have the system
serviced.
Chapter 5. Troubleshooting
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