
Pathlight VX User’s Guide 157
SNC LEDs
Each utility module and FC blade on the SNC has three LEDs that provide general status and activity
information. In addition, the FC blade has FC activity LEDs.
SNC Front Panel—Utility Module LEDs
Each utility module provides a vertical strip of three LEDs. Figure 18 shows their location and Table 12
describes their function.
Figure 18 Utility Module LEDs
Table 12 Utility Module LED Activity
The ATTN LED provides the following information:
• Flashing—Blinks occur in patterns that indicate the problem. For example, Figure 19
provides a
graphical representation of the blink pattern for problem code 3. Blink patterns repeat until the
problem is solved. For information on blink patterns, see TABLE 10.
• ON—The other utility module has detected a failure of this utility module, has taken this utility
module off the internal serial bus, has taken over control of both internal serial buses.
Figure 19 Blink Pattern Example
LED Color State Description
Ethernet link Green ON Indicates that the Ethernet connection is active.
Ethernet activity Amber Flashing Indicates data activity.
ATTN Blue OFF Indicates no attention conditions.
Flashing or ON Utility module requires attention. Refer to the
description of the ATTN LED activity beneath
this table.
STS Amber OFF Indicates no health or environmental problems.
RDY Green Flashing 1x / sec Indicates that processor status is normal.
Ethernet link
Ethernet link
Ethernet activity
Ethernet activity
ATTN
RDY
STS
Comentarios a estos manuales