Service manual

Chapter 5 Troubleshooting
58
Status
LED
Captive
Screw
Fan
Vent
Captive
Screw
AC
Inlet
Release
Handle
LC 2000 Power Supply Rear View
Power Supply Module LED Status and Conditions
Green LED Power Supply and NetServer Status
Steady Green This indicates the HP NetServer is powered up and operating normally, or is in
an ACPI suspended state.
Off This indicates the NetServer is powered off, the AC line cord is unplugged, or
the power supply has failed, which may include a fan failure (turning too slowly).
If a fan fails in one of two supplies, the defective supply will continue to operate
until it reaches the thermal shutdown limit. The second power supply
(redundant power supply) will continue to operate providing the necessary
power.
Specific AC Power problems:
If the following problems are encountered, perform the following checks.
l The Power LED does not light.
l Fans are not working.
l No control panel lights are lit.
1. Review the Troubleshooting Check list before you continue.
If the system fans are audible or the control panel's Power LED is on, then the AC power is on
and performing the following checks is probably not going to provide the solution. The power
LED and fans are DC powered, which indicates the power supply module is producing some of
the DC voltages.
2. Verify the incoming AC power and all its characteristics are good:
A. Verify the AC power switch is on.
B. Verify the power cable is connected to the wall socket, or PDU (power distribution unit), and
the HP NetServer.
C. Check the circuit breaker for the wall outlet.
a. If the breaker was off, verify all devices connected to the NetServer share the same
circuit breaker and are the only devices connected to it.