If LOS is flashing red , do not touch the electronics. The issue is the fiber optic cable or the central office. If PWR is off , proceed to Part 2.

References and further reading

Zte Zxv10 B820ca15 Fix Info

If LOS is flashing red , do not touch the electronics. The issue is the fiber optic cable or the central office. If PWR is off , proceed to Part 2.

References and further reading

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