Instruction Manual

Fault finding and clearing
DN00283717 © Nokia Corporation 23 (26)
Issue 2 DRAFT 1 - en Nokia Proprietary and Confidential
5 Fault finding and clearing
5.1 Fault finding
Fault finding is arrange in two categories:
1. Coverage
2. Alarm indication.
5.1.1 Loss of coverage
The following table defines the extent of loss of coverage and the possible cause
of this loss of coverage.
Loss of
coverage
Possible cause
Total The BTS is not connected
The BTS is switched off
Power supply is not available
Centralised PSU fault
Some areas only Related RU power supply is not available
The RF/optic cable is faulty
The RF/fibre optic connector is
damaged/dirty
The RU for that area is faulty