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User Manual

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User Manual
TFLN
Fig. 5.15 (a): Flow-chart describing the quick troubleshooting procedure
1, 2, 3 or 4
start
Which red
LED is ON?
Replace the faulty TFLN
Clean corresponding SC-APC
optical adapter and connector
Yes
Is any red LED
ON upon the
TFLN?
N
o
No
Go to corresponding
remote unit side
No
Yes
Yes
UL optical cables or optical
connections are supposed to
have some problems. Refer to
fibre optic UL troubleshooting
(fig. 5.15b)
No
Refer to remote unit
troubleshooting
Yes
end
Is red LED
upon TFLN
still ON?
Is red LED
upon remote
unit ON?
Is red LED
upon remote
unit still ON?