AT&T Network Adapter 25 Installation And Maintenance Manual page 197

Inspect the cabinet backplane and the connectors at the back of the
6.
CP. It may be possible to clean dirty connectors per prescribed
procedures and return the CP to service. However, if any
connectors are damaged or corroded the CP should be replaced.
7. Rest the CP on a firm nonconducting surface, and press in all
socketed devices on the CP to be sure that they are firmly
connected. Ensure that all straps (if there are any) are firmly seated.
To Replace or Reseat a CP:
1. To reseat a CP, slide it back firmly in its slot. When it is almost back
in place, you'll feel resistance and the removal lever will start to
return to its vertical position, flush with the edge of the CP.
2. Push the lever all the way to vertical, until it catches on the latch.
The red LED on the CP lights for up to 4 seconds during self-testing
3.
and then goes dark when the self-test is okay. If the CP has already
been translated, the green LED lights.
4. Recheck the CP LEDs.
CPU/Memory CP green LED should flash. Green LEDs on all
translated port and trunk CPs should be lighted; amber LEDs may be
lighted or dark. The Service Circuit amber LED should be lighted or
flashing.
Red LEDs should be dark.
MAINTENANCE
The
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