IBM 86624RY Maintenance Manual - Page 213

Information LED panel, SCSI Hard Disk Drive Activity Light

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Information LED panel The information LED panel on the front of the server contains the following status lights. OK 100 LINK TX MB OK RX 1 System Power Light: When this green light is on, system power is present in the server. When this light flashes, the server is in standby mode (the system power supply is turned off and ac current is present). When this light is off, either a power supply, ac power, or a light has failed. Attention If this light is off, it does not mean there is no electrical current present in the server. The light might be burned out. To remove all electrical current from the server, you must unplug the server power cords from the electrical outlets. 2 System POST Complete Light: This green light is on when the power-on self-test (POST) completes without any errors. 3 SCSI Hard Disk Drive Activity Light: This green light is on when there is activity on a hard disk drive. 4 Processor Activity Lights: These green lights indicate activity on each of the installed microprocessors. 5 System Error Light: This amber light is on when a system error occurs. A light on the diagnostics LED panel will also be on to further isolate the error. (For more information, see "Status LEDs" on page 63.) 6 Ethernet Transmit/Receive Activity Light: When this green light is on, there is transmit or receive activity to or from the server. Netfinity 5500 M20 - Type 8662 205

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Information LED panel
The information LED panel on the front of the server
contains the following status lights.
OK
100
MB
100
MB
LINK
OK
LINK
OK
TX
RX
±1²
System Power Light:
When this green light is on,
system power is present in the server.
When this
light flashes, the server is in standby mode (the
system power supply is turned off and ac current is
present).
When this light is off, either a power
supply, ac power, or a light has failed.
Attention
If this light is off, it does not mean there is no
electrical current present in the server.
The
light might be burned out.
To remove all
electrical current from the server, you must
unplug the server power cords from the
electrical outlets.
±2²
System POST Complete Light:
This green light is
on when the power-on self-test (POST) completes
without any errors.
±3²
SCSI Hard Disk Drive Activity Light:
This green
light is on when there is activity on a hard disk
drive.
±4²
Processor Activity Lights:
These green lights
indicate activity on each of the installed
microprocessors.
±5²
System Error Light:
This amber light is on when a
system error occurs.
A light on the diagnostics LED
panel will also be on to further isolate the error.
(For more information, see “Status LEDs” on
page 63.)
±6²
Ethernet Transmit/Receive Activity Light:
When
this green light is on, there is transmit or receive
activity to or from the server.
Netfinity 5500 M20 - Type 8662
205