Crown Audio CTs 1200 - Manual (Page 46)

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.
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•
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.
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