Scm I/O Module Leds; Audible Alarm Mute - IBM DCS9550 1S1 Installation & Service Manual

4.3.3

SCM I/O Module LEDs

The SCM I/O module LEDs are shown in
Table 4–3
LED
FC Host Port 0
Signal Good
FC Host Port 1
Signal Good
Router Status Storage Router Device Ready
ESI/SCM
Module Fault
4.4 Audible Alarm
The Ops Panel also includes an Audible Alarm which indicates when a fault state is present.
The following conditions will activate the Audible Alarm:
• Drive Fault
• Fan Fault
• Voltage out of range
• Thermal overrun
• System fault
4.4.1

Audible Alarm Mute

When the Audible Alarm sounds, it may be muted by pressing the Alarm Mute push-button.
Automatic muting will take place after two minutes if the mute switch is not manually
operated. The Alarm Mute push-button is located above the indicators on the Ops Panel (see
Figure
to indicate that a problem still exists. It will be silenced when all problems are cleared. (See
also Thermal Shutdown states, Section 4.5.5).
LED Test Mode
The Alarm Mute push-button can also be used to test the LEDs on the Ops Panel. When the
Mute push-button is held, all LEDs will be illuminated if there are no faults present.
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide
SCM I/O Module LEDs
Definition
Incoming FC signal is GOOD
No connection or incorrect connection
Invalid SFP connection
Incoming FC signal is GOOD
No connection or incorrect connection
Invalid SFP connection
Storage Router Device not ready or
defective
Fault present (also On when booting)
Successful controller initialization
4–1). When the alarm is muted, it will continue to sound with short intermittent bleeps
Troubleshooting and Problem Solving
Table 4–3.
Color
Green
Green
Green
Amber
Normal Fault
Status Status
On
Off
Flashin
g
On
Off
Flashin
g
On
Off
On
Off
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