Programming instructions

348
3300 ICP Technician’s Handbook
NSU Card Status
R2 NSU LED States
Table 110: Message Link Controlled (Card Status)
LED
Meaning
Green Yellow Red
ON — — No error.
— ON — Out of service.
— — ON Error (not necessarily total failure).
ON ON — Out of service (may occur at power up).
ON — ON Fault detected.
— ON ON Out of service (appears at power up).
ON ON ON Appears at power up before the NSU is fully
operational.
OFF OFF OFF Fully operational.
Table 111: R2 NSU LED States
LED State Meaning
LAN flashing LAN activity
MS
(message system)
solid green Message link open to the system
OFF Message link not open to the
system
ST (status) flashing Operational
OFF Not operational
solid Card is booting
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