Install Manual

BRITECELL System Manual MN010-04 June 2003 Page 34 of 78
The company has a policy of continuous product development and improvement and we therefore
reserve the right to vary any information quoted without prior notice.
21. Troubleshooting
If an alarm LED is active, check the environmental conditions (operating
temperature, supply range, etc.).
If an alarm persists, it is essential to give a correct alarm interpretation is to solve
the problem.
The uplink laser is switched on only if downlink optical power is present. In case of
any failure, the laser is switched off. By doing this, the unit sends information
about its operating status to the TFL.
If the TFA is alarmed, clean the downlink optical connector.
If the TFA is still alarmed, measure the downlink optical power at TFA input with
an optical power meter and verify if it is higher than –5 dBm. If it is not, the fibre
(at least as far as the down link fibre is concerned) has some problems. If optical
power is higher than -5 dBm, replace the TFA.