Miranda NV8144 User Manual

102 Rev 2.2 • 27 Mar 10
5. Maintenance
Indicator LEDs
Control Cards
The LEDs on the control cards can be monitored to determine whether the card is operating nor-
mally. The meanings of the LED indicators are as follows:
Input and Output Cards
The LEDs on the input and output crosspoint cards can be monitored to determine whether the
cards are operating normally. The LEDs indicate the following:
Crosspoint Cards
The LEDs on the crosspoint cards can be monitored to determine whether the cards are operating
normally. The LEDs indicate the following:
LED Indicator Function
Red (low battery) Normally OFF. If lit, indicates that the battery needs replacing. See Battery
Replacement on page 103.
Red (alarm) Normally OFF. If lit, indicates a problem or fault. Check the external reference
signals. If that does not resolve the problem, refer to the system status window in
UniConfig for additional information. If you cannot resolve the problem, call
Miranda technical support. For contact information, see Technical Support Contact
Information on page iii.
Yellow (active card) Normally ON. Indicates the card is the active control card. On the standby control
card, this LED should be OFF.
Green (health,
power)
Normally ON. Indicates the card has power and is operating normally.
LED Indicator Function
Red (alarm) Normally OFF. If lit, it indicates a problem. Replace the card or call Miranda
technical support. For contact information, see Technical Support Contact
Information on page iii.
Green (Power) Normally ON. Indicates the card has power and is operating normally.
Yellow (health) Normally ON. Indicates software has loaded and the card is operating normally.
Green (good
communication)
Normally ON. Indicates good communication with the control card.
Red (bad
communication)
Normally OFF. If lit, indicates that communication is not working properly with the
control card; the communication is “bad.”
LED Indicator Function
Red (alarm) Normally OFF. If lit, it indicates a problem. Replace the card or call Miranda
technical support. For contact information, see Technical Support Contact
Information on page iii.
Green (Power) Normally ON. Indicates the card has power and is operating normally.
Yellow (health) Normally ON. Indicates software has loaded and the card is operating normally.

Miranda NV8144 Specifications

General

Brand	Miranda
Model	NV8144
Category	Switch
Language	English