IBM 7133 D40, Руководство по обслуживанию

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Step 1.
You are here because the optical link might not be working correctly.
Ensure that:
v
The optical extender at each end of the optical link is correctly plugged in.
v
The main fibre optic cables are correctly connected to the optical extenders.
v
The using system and the 7133 (or any other device into which optical
extenders are plugged) are switched on.
v
If the fibre optic link is to be used for multi-mode operation, the correct type
of multi-mode conditioner has been installed at each end of the link (see
“Specifications for Fibre Optic Cables and Connectors” on page 26).
Does the problem remain?
NO Go to “MAP 2410: 7133 Models D40 and T40 – Repair Verification”
on page 131 to verify the repair.
YES Go to step 2.
Step 2. (from steps 1, 14, and 19)
If you are at this step for the first time, observe the lights on either of the two
optical extenders of the link.
If you have come to this step from any step in this MAP other than step 1,
observe the lights on the optical extender at the other end of the link.
Is the Power light off?
NO Go to step 3.
YES Go to step 5 on page 113.
Step 3. (from step 2)
Is the Receive light off?
NO Go to step 13 on page 125.
YES Go to step 4 on page 112.
Chapter 2. Problem Determination Procedures
111