127Maintenance
4.5 Operating faults (symptoms, causes and
remedies)
Fault Cause Remedy
The equipment does not start • Incorrect connection to
the mains
• Circuit breaker is not
armed
• Circuit breaker fuse fault
and/or with flow not ok
• Auxiliary power incor-
rect (MAINS LED on front
panel off)
• Fault in power stage
• Replace the cables (if not
ok) and fix its appropria-
tely
• Arm circuit breaker
• Adapt circuit breaker
• Call the manufacturer
• Call the manufacturer
Amplifiers fault • Amplifier is not properly
connect to the mains
• Amplifier is not in the
correct position in the
rack
• No correct address
• Amplifier is not correct
wired
• Replace the cable or con-
nect to apparatus
• Insert amplifier in the
correct position (please
see schematics in Iden-
tification and Quick Start
Manual)
• Set the correct address
(please see User Manual)
• Adapt signal and interlock
cable (please see sche-
matics in Identification
and Quick Start Manual)
Exciters fault • Exciter is not properly
connect to the mains
• Exciter is not in the cor-
rect position in the rack
• No correct address
• Incorrect parameters set-
ting (power, frequency,
Dual Driver configura-
tion, exchange number
exceeds the maximum
allowable)
• Replace the cable or con-
nect to apparatus
• Insert exciter in the
correct position (please
see schematics in Iden-
tification and Quick Start
Manual)
• Set the correct address
(please see User Manual)
• Set the correct param-
eters (please see Identi-
fication and Quick Start
Manual)
Transmitter does not reach
the required power
• Transmitter in Stand By
• No interlock connection
• Not correct setting for
target power
• Amplifiers deliver a non-
homogeneous power
• Exciters deliver incorrect
piloting power
• Set the devices in RF ON
• Connect interlock connec-
tion in technical pannel
• Set the correct parameter
(please see Identification
and Quick Start Manual)
• Call the manufacturer
• Verify the setting and, if
necessary, call the manu-
facturer
There is reflected power • RF connections problem
to combiner
• Unbalancing problem to
antenna load
• Adapt RF connections
(please see schematics in
Identification and Quick
Start Manual)
• Adapt antenna connec-
tion system
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