Vanu CompactRAN, Hardware Installation Manual, Page: 34 / 44

24 Vanu CompactRAN CDMA/GSM Base Station Hardware Installation Guide
3. Turn on the AC power source.
4. Turn on power to the CompactRAN GSM/CDMA base station ( Figure 4-3 ).
Figure 4-3. Service Enclosure (Opened)
5. Check continuity of terminals 2 and 3 using digital multi-meter ( Figure 4-2 ).
Open indicates a battery alarm.
6. Check continuity of terminals 5 and 6 ( Figure 4-2 ).
Open indicates AC failure.
7. Check the 12 VDC bus voltage.
On the battery alone, it can range from 6 to 12 VDC. With AC power supplied,
it should be slightly above 12 VDC.
8. Make sure the Green LED on the top 12 VDC supply board is lit.
9. Check SBC fan operation to make sure it is powered up.
Power Switch
Modem is installed here