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4.4 Status-indicating LEDs
4.4.1
LED Overview
All FRUs (Field Replaceable Units) have status-indicating LEDs that reflect
the operational status and integrity. The list in Table 4-1 shows the number
of LEDs that reside on each component.
Component
LCD Keypad
Panel
Drive Trays
Controller
Modules
Fibre Port
LAN Port
BBU
PSU
Cooling Module
LED definitions are given in the following sections.
4.4.2
LCD Keypad Panel
The LCD keypad as shown in Figure 4-3 consists of five (5) buttons, three
(3) LEDs, and a 16x2-character LCD screen that provides access to
firmware-embedded utility. Press the ENT button for two (2) seconds on the
initial screen to enter the main menu. Press the ESC button to clear the
current event.
Press the UP and DOWN arrow keys to select viewing items. In the last of
the main menu items, "View and Edit Event Logs," the most recent event is
displayed first.
For dual-controller subsystems, the LCD interface accesses the Primary
Controller. Press the UP and DOWN arrow keys together for more than one
(1) second to display the status of the Secondary Controller.
Status-indicating LEDs
Chapter 4: Subsystem Operation and Monitoring
LEDs per
Total LEDs
Module
3
3
2
32
7
14
2
8
2
2
1
2
1
2
2
4
Table 4-1: LED Distribution
Definition
See Section 4.4.2
See Section 0
See Section 4.4.4
See Section 4.4.4.2
See Section 4.4.4.4
See Section 4.4.5
See Section 4.4.6
See Section 4.4.7
4-7
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