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Step 12. (from step 9)
Figure 57. Wrapped Main Fibre Optic Cables
124
7133 Models D40 and T40 Service Guide
b. Place the wrap cable and adapter assembly into its plastic bag,
and return it to the place where it is normally kept.
c. Go to step 12.
One of the following conditions exists:
v The light output from this optical extender is low.
v The main fibre optic cables are failing.
a. Refer to Figure 57.
b. Use the wrap adapter 1 to wrap (connect) the two main fibre optic
2 together.
cables
c. Check the Receive light of the optical extender that is at the other end of
the optical link.
Is the Receive light on?
NO
A main fibre optic cable has failed. Tell the customer.
YES
The optical extender that is disconnected from the fibre optic cables
has failed.
a. Remove the wrap cable from the optical extender, and do
whichever of the two following actions is appropriate:
v If the wrap cable is 400 mm (15 in.) long, connect each of its
ends to the wrap adapter to make a closed loop.
v If the wrap cable is 150 mm (6 in.) long, connect one end to
the wrap adapter, then install a protective cover at each end of
the complete wrap cable and adapter assembly.
b. Place the wrap cable and adapter assembly into its plastic bag,
and return it to the place where it is normally kept.
c. Exchange the optical extender for a new one.
d. Observing the identifications of the fibre optic cables, connect
the cables to the new optical extender.
e. Go to "MAP 2410: 7133 Models D40 and T40 – Repair
Verification" on page 131 to verify the repair.
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