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4
Blinks
Remote
fault
Bad fiber
connections
Clean TX
fiber on
both ends
Bad port on
other end
Try another
port or
replace unit
Broken fiber Check and fix
TX fiber link
5
Blinks
Invalid
data
Bad fiber
connections
Clean RX
fiber on
both ends
Table 6. Troubleshooting Using the
Status LEDs
LED
Status
Indicates
Possible
Problem
Possible
Solution