Rear View - IBM System x3755 Problem Determination And Service Manual

USB connectors: Connect USB devices to these connectors.
Hard disk drive activity LED: On some server models, each hot-swap hard disk
drive has an activity LED. When this LED is flashing, it indicates that the drive is in
use.
Hard disk drive status LED: If the server is configured for RAID operation, when
this LED is lit, it indicates that the associated hard disk drive has failed. If the LED
flashes slowly (one flash per second), the drive is being rebuilt. If the LED flashes
rapidly (three flashes per second), the controller is identifying the drive.
DVD-eject button: Press this button to release a CD or DVD from the DVD drive.
DVD drive activity LED: When this LED is lit, it indicates that the DVD drive is in
use.

Rear view

The following illustration shows the connectors and LEDs on the rear of the server.
SP Ethernet
10/100
SP Ethernet 10/100 activity LED: This LED is on the SP Ethernet 10/100
connector. When this LED is lit, it indicates that there is activity between the server
and the network.
Locator LED: When this LED is lit, it has been lit remotely by the system
administrator to aid in visually locating the server.
Information LED: When this LED is lit, it indicates that a noncritical event has
occurred. An LED on the light path diagnostics panel is also lit to help isolate
the error.
System-error LED: When this LED is lit, it indicates that there is a fault or
condition in the server and that light path diagnostics might light an additional
LED to help isolate the condition.
Release latch: Slide this latch to the left to access the light path diagnostics
panel.
SP Ethernet Gigabit
10/100 Ethernet 1
activity LED link LED
SP Ethernet
10/100
Power supply
link LED
Serial Mouse USB
Keyboard Video
Gigabit
Ethernet 2
link LED
Gigabit Gigabit
Ethernet 1 Ethernet 2
activity LED activity LED
Gigabit Locator
Ethernet 2 LED
System-
Gigabit
error
Ethernet 1
LED
Power-on
LED
Chapter 1. Introduction
5