MB21 (21 Slot) Chassis
F-MB21X-R Chassis Removable Fan Tray
MB6 and MB21 Multichannel Chassis Installation Guide, v2.0, Issue 01
22
F-MB21X-R Fan Tray LED Indicators and Alarms
The following table summarizes the functions of the F-MB21X-R fan tray LED indicators (shown in
21) along with the alarm behaviors when faults occur.
Table
2:
F-MB21X-R Fan Tray LED Indicators and Alarms
Indicator Color & Description
Configuration
Power LED
Status LED
Audible
Alarm
OFF
OFF
OFF
No power to chassis.
Solid Green
Solid Green
OFF
Power applied to chassis and no issue/fault is reported.
Solid Green
Solid Red
ON
Chassis Power-ON – Fault(s) Detected.
The following faults will trigger the audible alarm and turn the
Status LED to RED:
•
One, some, or all fans are blocked,
•
One, some, or all fans have no power,
•
An electrical short is detected (V+ to GND) on the fan
tray,
•
Thermocouple is missing,
•
Thermocouple is shorted,
•
Ambient temperature is over 55°C.
Solid Green
Solid Red
OFF
Chassis Power-ON – Fault(s) Detected – Mute button (Alarm
ON/OFF) pushed.
To mute the audible alarm, push the Alarm ON/OFF button.
Once the button is pushed, the alarm is muted.
To re-activate the alarm, push the Alarm ON/OFF button a
second time.
