Troubleshooting Shelves
SH7HU(-R) Network Element Status LEDs
There are three NE LEDs on the fan unit front panel of the shelf:
• Critical
• Major
• Minor
Note
The NE Status LEDs (critical, major, minor) are active only on the master shelf, i.e. only once for
a network element. The NE status LEDs of the remaining shelves within the network element
will be off.
The three LEDs indicate a failure of the network element. Only the highest failure level within the NE will be
indicated. Therefore, only one of the three LEDs lights up at the same time.
Table 11 describes the cause of the status that each color of the NE status LED represents and the solution for
troubleshooting. If there is no NE fail, the three LEDs are lit green.
Note
Before you start with troubleshooting, ensure that the NEis operating with the required NCU
software and module firmware. For details on updating NCU software and module firmware,
refer to “Updating the NE Software Release” on p.617 and “Performing Other Software Update
Actions” on p.628.
Note
If your module has an LED status that is not represented in Table 11, please contact your ADVA
Optical Networking Technical Services Representative.
LED
Names
LED
Colors
Potential Cause Solution for Troubleshooting
Critical Off Communication is broken
(FCU—SCU or SCU—NCU)
or
Shelf is not the master/main
shelf.
Check if a firmware mismatch is displayed in the
management and update the firmware if available.
• If no firmware mismatch is displayed in the
management, a hardware mismatch of the fan
unit or SCU has occurred. First have Service
Personnel replace the fan unit and if the LED is
off, replace the SCU.
• If the LED is still off, verify that the shelf is the
master or main shelf.
• If the LED is still off, have Service Personnel
replace the fan unit and SCU.
Red A critical error is detected as
highest severity in the NE.
At least one of the modules
has a critical error.
Check the status of the modules in the fault
management table.
Table 11: SH7HU(-R) Network Element Status LEDs
FSP 3000R7 Maintenance and Troubleshooting Manual - Product Release 16.2 - Document Issue A 79
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