User Manual

106
User Manual
TFLF start-up
Before the TFLF Master Unit is switched on, make sure that:
• every Remote Unit has been connected to relevant port of the Master Unit
• each remote unit has been connected to its coverage antennas
After that, remember that only when all the remote units are already on, the
Master Unit itself can be turned on.
Once the Master Unit has been switched on, the following steps have to be
followed:
1. Wait until the communication between TFLF and Remote Units is
established and alarms related to unused ports arise.
2. Verify that all used ports don’t have any active alarm. In case an
alarm is present follow the troubleshooting procedure.
3. Press the STORE button for at least 5sec. (all TFLF LEDs will flash for
3sec.) in order to mask unused ports.
Removing the TFLF
Switch off the Master Unit power supply and remove the power cable.
Remove the SC-APC optical connectors and insert the protection caps into
TFLF optical ports. Then:
• unscrew the 4 screws and remove the unit
• put the removed TFLF unit in its safety box
TFLF troubleshooting
In case a TFLF Fast Master Unit has any problem, this will be easily revealed
through LEDs which reveals not only failures of the TFLF itself but also
malfunctions located on related remote units.
ALARM
CODE
(TSUN
description)
ALARM
DESCRIPTION
ACTIVE LED
SUPERVISI
ON
PRIORITY
LEVEL
ACTION
RECOMMENDED
RELÉ
PRIORITY
LEVEL
(subrack)
DL optical
power fail
TFLF DL optical power
from the laser is too
low
LU MAJOR Return the unit CLOSED
DL RF alarm DL RF amplifier LU MAJOR Return the unit CLOSED
UL RF alarm UL RF amplifier LU MAJOR Return the unit CLOSED
Temperature
alarm
Over-temperature
alarm
LU (flashing) MINOR
Check ventilation
and environment
OPEN
Power supply
alarm
Power supply fault
LU
(PWR ON off)
MAJOR Return the unit CLOSED
UL1 optical
power fail
TFLF UL1 optical
power is too low
RU1 MAJOR Check for fibre or
splice stresses and
CLOSED
TFLF