Troubleshooting 8-9
AC POWER LEDs
There is an AC POWER LED for the power supply unit on the rear.
The LED turns green and flashes when the power supply unit receives AC power from the power
cord, which is connected to the AC inlet. (Flashing amber indicates no AC power is received in any
one of two power supplies in the redundant configuration.)
The LED turns green when the server power switch is turned on. If the LED does not go on when
the server power switch is turned on or if it turns amber, the power supply unit is probably faulty. In
this case, contact your service representative to replace the power supply unit.
NOTE:
If one power supply unit fails while an optional power supply
is mounted, the system can continue operating on the other power
supply unit (redundancy function). The failing power supply unit can be
replaced in hot swap mode (with the power on) without the system
being stopped.
AC inlet
Power supply slot
(option)
AC POWER LED
AC POWER LED
AC inlet
Power supply slot
(standard)
Summary of Contents for Express5800/R120b-1
Page 20: ...Notes on Using Your Server 1 3 3 5 inch disk model...
Page 87: ...3 24 Setting Up Your Server This page is intentionally left blank...
Page 268: ...6 14 Installing and Using Utilities Windows Server 2003...
Page 296: ...7 14 Maintenance This page is intentionally left blank...
Page 350: ...8 54 Troubleshooting When you use a remote console 6 Each tool is selected and it starts...
Page 438: ...9 82 Upgrading Your Server This page is intentionally left blank...
Page 450: ...C 2 IRQ This page is intentionally left blank...
Page 474: ...D 24 Installing Windows Server 2008 R2 4 Activate Windows The Windows activation is complete...
Page 504: ...E 28 Installing Windows Server 2008 4 Activate Windows The Windows activation is complete...
Page 564: ......
Page 566: ...H 2 Using a Client Computer Which Has a CD Drive This page is intentionally left blank...
Page 576: ...I 10 Accessing Power and Performance Data This page is intentionally left blank...
Page 580: ...J 4 Product Configuration Record Table This page is intentionally left blank...