FBT 37483_VAIE2550_manual1.pdf - Manuale (Pagina 100)

8-14
USING THE SYSTEM
UK
8.5.1.5 AMPLIFIER FAULTS
Power amplifier diagnostics and GND fault
From the FAULTS panel (point 8.5.1), press numerical key 3 and
access the panel for viewing the power amplifier diagnostics and
ground faults of the loudspeaker lines.
The diagnostic state of each item monitored is reported, as
shown in the following table.
Press ESC to return to the panel FAULTS.
Label Part being diagnosed Display Cause Action required
All All
OK No failures -
N.T.
NOT TEST. Diagnostics disabled
during configuration (See Set>
BACKGROUND TEST menu)
-
Res.
Failure cleared due to previous
Fault signal
Access the Report> FAULTS panel from the
OPERATOR menu and carry out a MANUAL
RESET of the FAILURE signal.
Voice amp.
Internal amplifier of voice
channel
Fault
Current failure due to
critical path
Contact Servicing.
Music amp.
Internal amplifier of music
channel
Contact Servicing.
Est. amp.
External amplifier for
power expansion
Check the cables connecting the amplifier
to the EXT.AMP IN / EXT. AMP OUT sockets
and operation of the external amplifier.
Gnd Fault Ground Fault
Dispersion to earth from at least
one speaker line
Disconnect one speaker line at a time to
identify the failed line.
Restore line insulation.
Reconnect the speaker line and carry out a
MANUAL RESET of the FAILURE signal by
accessing the Report> FAULTS panel from
the OPERATOR menu.