EXP-INTF (Expansion Interface Circuit Pack)
Issue 4 May 2002
10-795555-233-123
2 FAIL The test tone was transmitted and detected correctly, but the
correct data packet was not detected by the TN778 Packet
Control circuit pack. This error only applies to the TN570
Expansion Interface circuit pack.
1. Test the TN778 Packet Control circuit pack to verify that it
is functioning properly. If any tests fail, investigate those
tests and repair the Packet Control circuit pack.
2. If the Packet Control circuit pack checks out OK, issue the
test board PCSS long command on the Expansion
Interface circuit pack.
3. If Test #242 continues to fail, replace the Expansion
Interface circuit pack. Then, issue the test board PCSS
long command on the new Expansion Interface circuit
pack.
4. If Test #242 continues to fail, replace the lightwave
transceiver, reset the circuit pack and issue the test board
PCSS long command on the Expansion Interface circuit
pack.
Table 10-293. TEST #242 Expansion Interface Lightwave
Transceiver Loop Around Test — Continued
Error
Code
Te s t
Result Description/Recommendation
Continued on next page
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