Crown cts1200 Guía Del Usuario

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Operation Manual
CTs Power Amplifi ers
page 46
CONDITION: No sound, even though 
the amp has power. 
Power LED is on 
without fl ashing and the amp is receiving an 
input signal. Signal indicator is fl ashing.
Speakers not connected.
Open circuit due to speaker failure.
CONDITION: No input signal.
(Signal indicator is not fl ashing even though 
audio is applied and channel is ready).
POSSIBLE REASON:
Input signal level is very low.
Input cables have become disconnected.
There is a short on the amplifi er
output. First disconnect your speakers 
from the affected channel(s) one by one 
to determine if one of the loads is 
shorted.
6 Troubleshooting 
CONDITION: Thermal indicator is 
fl ashing.
POSSIBLE REASON:
The amplifi er has become too hot for 
safe operation. Check for loads less than 
2 ohms, and for excessive input levels. 
Check for proper ventilation and proper 
mode-switch setting. Driving low-
impedance loads while in high-voltage 
mode can cause overheating.
CONDITION: All channel thermal 
indicators are fl ashing.
POSSIBLE REASON:
Power supply thermal overload.
DC or excessive low-frequency signal at 
the amplifi er’s output has enabled 
speaker protection.
CONDITION: Bridge LED is fl ashing.
POSSIBLE REASON:
The mode switch was switched while the 
power was on.