Pub. 42004-610L2A
Model 751-801 SmartSeries
®
Speaker Amplifier
Page: 6 of 12
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03/04
How to Diagnose Speaker Amplifier Faults
The table below describes possible solutions for some common problems.
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 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.
Note
: When replacing the assembly, perform the following steps when the
assembly is part of an ADVANCE system:
1.
Set the address on the new assembly to 03.
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 Master Control Unit
(MCU).
4.
Set the address to the correct address.
5.
Plug the assembly back into the enclosure. The station initiates a configuration
download request. The time to complete the download depends upon system
configuration and system activity, but 1 to 2 minutes 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 A section of this document.
