GAI-Tronics 751-901 SmartSeries Speaker Amplifier - Manual (Page 9)

Pub. 42004-659L2F
751-901 SmartSeries ® Speaker Amplifier P AGE
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Troubleshooting
The following table lists some hints to aid technicians in troubleshooting.
Problem Possible Solution
Any problem with
station performance Remove the assembly from the enclosure and examine it carefully for obvious
faults such as unconnected plugs, loose connections where the wires connect
to the FSK/
P PCBA, and so on. Determine whether the fault is in the
assembly, or in the system, by plugging in a known good spare assembly (set
to the same address as the assembly removed). If the fault is in the assembly,
remove it for repair.
N OTE : When replacing the assembly, perform the following steps:
1. Set the address on the new assembly to 0, 3.
2. Plug the assembly into the enclosure.
3. After about 10 seconds, remove the assembly. The station is now set up
to request a download of configuration variables from the MCU.
4. Set the unit to the correct address. Set the address to 0, 4 for standard
dumb station operation or consult the ADVANCE system manual for
address assignment information.
5. Plug the assembly back into the enclosure. The station initiates a
configuration download request (ADVANCE systems only). The time
required to complete the download depends upon system configuration
and system activity, but several seconds is typical.
Speaker volume needs
adjustment Use the USER
ADJ control to adjust the Minimum Level, Offset Level, or
VLC Level (as appropriate). Refer to the “Adjustments” section on page 6.