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14 Christie Vive Audio CDA2/CDA3 Amplifiers User Manual
020-100355-02 Rev. 1 (03-2014)
they are complete and wired correctly. Verify the polarity of each
connection.
There is output from one channel,
but not from the other channel.
•
Verify that the attenuators are turned up for both channels.
• Check all connections between the amplifier and loudspeakers. Make
sure that the twist lock connectors are fully-inserted and seated. The
connectors must be inserted and turned 1/4” clockwise until they lock
in position. If screw terminal connections are used at the loudspeaker
inputs, make sure the cables are attached and do not cause a short
between the poles of the loudspeaker inputs.
•
Check the amplifier indicators:
• If the SIG (signal) indicators are lit or blinking for both channels,
make sure the channel’s input signal is present and at a sufficient
level to drive the input.
• If the TEMP (temperature) indicators are lit for either channel, the
amplifier has overheated and idled one or both channels. See The
amplifier is overheating. on page 14.
•
If the DC (direct current) indicators are lit for either channel, an
abnormal condition exists within the amplifier or the load it is
driving. If the channel does not reset and the DC indicators remain
lit, send the amplifier to an authorized service center for repair.
• Check the amplifier mode:
•
If the amplifier is in STEREO mode, make sure there is signal input
to CH A and CH B. See Input Connections on page 8.
•
If the amplifier is in STEREO or PARALLEL mode, make sure that one of
the loudspeaker connections is not connected to the BRIDGE output.
There is sound output from the
loudspeakers, but there are no
high frequencies present in the
output.
•
Check if the low-pass filter is engaged on either channel. Make sure the
input mode selector switch is set to the correct mode (Full Range is the
default mode).
•
Verify that the NL4 twist-lock connector is wired correctly if the
loudspeaker is biamped through the CH A output connection. See
Biamp Mode Connections on page 10.
There is sound output from the
loudspeakers, but there are no low
frequencies present in the output.
• Check if the high-pass filter is engaged on either channel. Make sure
the input mode selector switch is set to the correct mode (Full Range is
the default mode).
•
Verify that the NL4 twist-lock connector is wired correctly if the
loudspeaker is biamped through the CH A output connection. See
Biamp Mode Connections on page 10.
The amplifier is overheating.
• Verify that there is adequate ventilation around the amplifier. Make
sure there is 31 cm (12 in.) clearance at the front and the back of the
amplifier.
• Verify that the amplifier cooling vents are not blocked.
•
Check the cooling fan at the rear panel of the amplifier to make sure it
is working. If the power amplifier has overheated, the TEMP indicators
are lit, and the fan is not operating, cease operation of the amplifier
and send it to an authorized service center for repair.
• Verify that the amplifier is operating within its rated impedance. Check
the loudspeaker load being presented to the amplifier outputs. The
minimum load impedance for the CDA2 and CDA3 power amplifier is 2
ohms. Loudspeaker loads below 2 ohms stereo (4 ohms for each
channel) or 4 ohms bridged cause the amplifier to overheat. If
overloaded, correct the loudspeaker configuration or load the resume
operation.