To run the Parallel Channel Adapter test with the wrap blocks, which includes a test
of the V-cable and the Channel Interface Cables, follow these Steps:
1. Leave the V-cable attached to the adapter.
2. Ask the host computer operator to vary offline all device addresses attached to
the channel that contains the adapter that is to be tested. This is required
because the channel cables will be unplugged, which could cause host
problems.
3. Prepare the channel cables, V-cables, Channel Interface Cables, wrap blocks,
and terminators. See “External Wrap Testing Parallel Channel Adapters” on
page 3-23.
4. After the cable preparation is complete, ask the host computer operator to vary
online those units attached to channels that are
not being tested.
5. Run the diagnostic test (see “Testing the Adapters” on page 5-49).
6. Do you want to repeat the Parallel Channel Adapter test?
Yes
Return to Step 3 to test the next cabling scenario until you are done.
No
Perform the following Steps:
a. Ask the host computer operator to vary offline all device addresses
attached to the channels you tested.
b. Make sure that all Select/Bypass Switches that are connected to
Parallel Channel Adapters are set to S.
c. Remove the wrap blocks and extra terminators.
d. Reconnect the channel cables to their correct locations.
e. Ask the host computer operator to vary online all device addresses
attached to the channels you tested.
f. Return to the procedure you were following.
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3746-9X0: MAE Installation and Maintenance
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