Power-On Password Override; Power Supply Leds; Light Path Diagnostics - IBM 884015U Maintenance And Troubleshooting Manual

Power-on password override

Power-on password override. Changing the position of this switch bypasses the
power-on password check the next time the server is turned on and starts the
Configuration/Setup Utility program so that you can change or delete the power-on
password. You do not have to move the switch back to the default position after the
password is overridden.
Changing the position of this switch does not affect the administrator password.

Power supply LEDs

The ac and dc power LEDs on the power supply provide status information about
the power supply. The following illustration shows the location of the ac and dc
power LEDs.
For more information about power supply LEDs, see "Power-supply LED errors" on
page 100.

Light path diagnostics

Use light path diagnostics to diagnose system errors. The light path diagnostics
panel is inside the light path diagnostics drawer, on the right front of the server. To
access the light path diagnostics panel, slide the latch to the left on the front of the
light path diagnostics drawer.
The following illustration shows the controls and LEDs on the light path diagnostics
panel.
To acknowledge a system error but not take immediate action, press the remind
button and place light path diagnostics in remind mode. When the server is in
Light Path
Diagnostics
OVER SPEC
CPU
REMIND
MEM
SP
FAN
PCI A
AC power
(green)
DC power
(green)
PS1 PS2
VRM CNFG
NMI S ERR
DASD RAID
TEMP BRD
PCI B PCI C
LED
LED
Chapter 5. Diagnostics
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