User Manual

CCP Backplane Troubleshooting – continued
Jan 2002
6-17
SC4812ET BTS Optimization/ATP — CDMA LMF
No (or Missing) MCC24 Channel Elements
Follow the procedure in Table 6-22 for problems with channel elements.
Table 6-22: No MCC–1X/MCC24E/MCC8E Channel Elements
Step Action
1 Verify channel elements on a co–located MCC of the same type (CDF MccType codes:
MCC8E = 0; MCC24E = 2; MCC–1X = 3)
2 Check MCC connectors (both module and backplane) for damage.
3 If the problem seems to be limited to one MCC, replace it with a known good MCC of the same
type.
4 If no channel elements on any MCC, verify clock reference to CIO.
DC Power Problems
Potentially lethal voltage and current levels are routed to
the BTS equipment. This test must be carried out with a
second person present, acting in a safety role. Remove all
rings, jewelry, and wrist watches prior to beginning this
test.
WARNING
6