IBM 7133 Series, Service Manual

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| Does the Receive light of the Fibre-Optic Extender come on?
| NO | 1. Remove the wrap cable from the Fibre-Optic Extender, and do whichever
| of the two following actions is appropriate:
| If the wrap cable is 400 mm (15 in.) long, connect each of its ends to
| the wrap adapter to make a closed loop.
| 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.
| 2. Place the wrap cable and adapter assembly into its plastic bag, and return
| it to the place where it is normally kept.
| 3. Exchange the Fibre-Optic Extender for a new one.
| 4. Observing the identifications of the fiber optic cables, connect the cables to
| the new Fibre-Optic Extender.
| 5. Go to “MAP 2410: 7133 – Repair Verification” on page 2-2410-1 to verify
| the repair.
| Note: If the problem remains, find another wrap cable and adapter
| assembly, and repeat this step. The original wrap cable might have failed.
| YES | 1. Remove the wrap cable from the Fibre-Optic Extender, and do whichever
| of the two following actions is appropriate:
| If the wrap cable is 400 mm (15 in.) long, connect each of its ends to
| the wrap adapter to make a closed loop.
| 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.
| 2. Place the wrap cable and adapter assembly into its plastic bag, and return
| it to the place where it is normally kept.
| 3. Observing the identifications of the fiber optic cables, reconnect the cables
| to the Fibre-Optic Extender.
| 4. Go to step 7 on page 2-2330-9.
2-2330-8
7133 Service Guide