IBM 7133 D40, Руководство по обслуживанию

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Step 16. (from step 15)
v
If the optical extender is plugged into an SSA attachment, observe the
green light (if present) that is next to the connector on the adapter.
v
If the optical extender is not plugged into an SSA attachment, or is plugged
into an SSA attachment that has no green light, observe the Ready light of
the first disk drive module on the string to which the optical extender is
connected.
Is the Ready light on continuously?
NO Go to step 17.
YES Go to step 19 on page 130.
Step 17. (from step 16)
Is the Ready light flashing?
NO
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. Observing the identifications of the main fibre optic cables,
reconnect the cables to the optical extender.
d. Exchange, in the sequence shown, the following FRUs for new
FRUs. Ensure that for each FRU exchange, you go to “MAP
2410: 7133 Models D40 and T40 – Repair Verification” on
page 131 to verify the repair.
1) The disk drive module (see “Disk Drive Modules and Dummy
Disk Drive Modules” on page 150).
2) If present, the dummy disk drive modules that are between
the connector and the first disk drive module of the string
(see “Disk Drive Modules and Dummy Disk Drive Modules”
on page 150).
3) If present, any other card that is installed between the optical
extender and the first disk drive module.
4) The SSA attachment (see the Installation and Service Guide,
or equivalent, for the using system).
YES Go to step 18 on page 129.
128
7133 Models D40 and T40 Service Guide