IBM 2220 Nways 300, Service Manual

Page: 86 / 264

All Switch to Line Interface Tests
This diagnostic performs a power on self test (POST) and loopback on all adapters
of the rack (see “Switch to Line Interface Test”) equivalent test for one adapter.
Attention:
During an All Switch to Line Interface Test the Nways Switch traffic is stopped.
Switch to Line Interface Test
This diagnostic performs a power on self test (POST) and loopbacks on the
selected adapter.
Local Node
Switch Adapter LIC
Line Transmit
Line Receive
LS
Figure 4-1. Area Tested by Switch to Line Interface Test
Note:
If the lines are attached through line connection boxes (LCBs) and active remote
connectors (ARCs), tests are also performed on the LCBs and top ARCs (see...)
Local Node
Switch Adapter LIC LCB ARC
LS
Figure 4-2. Area Tested by Switch to Line Interface Test on LIC511
Attention:
The Switch to Line Interface Test stops the traffic of all the attached lines.
When you start the Switch to Line Interface Test you have the possibility to
specify a wrap plug presence. In this case your test will take in account the wrap
plug (that you must install) and you will have the following area tested.
4-2
2220 Models 300, 500, and 501: Service Guide