Audiolab DQX-7200, Руководство пользователя

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P. 11
- AUDIOLAB DQX-7200
Operation Rear Panel
Signal LED
The corresponding LED will light up when the input signal exceeds
-32dB, -20 dB and 10dB. If the signal LED does not light up, please
check the gain setting, the input connections, the signal audio source
and whether the output line is short circuit. If the Signal 20dB or
-10dB Led illuminates with no signal input, there may be ystem
oscillations or some other malfunction. Disconnect the load and
fully reduce the gain. If the LED remains on, shows that the amplifier
needs servicing.
2 Gain
Control
The maximum voltage gain of the amplifier varies depending on the
model is shown of the designation. The gain controls are marked in
dB of attenuation. There are 21 detents for repeatable adjustments.
The upper 14 steps are about 1dB each, and settings should not be
used for normal program levels, as the input headroom could be
exceeded, but can be used for testing at reduced levels. At the mini
-
mum setting, the signal is completely cut off.
3
Power LED Power on, LED will illuminate green. If no indication, please check
whether the AC power cord or AC outlet is unusual or not.
Thermal
LED
It will light up when the amplifier overheats.
Bridge
Mono
Bridge mode, Mono mode.
Fault LED
It will light up red to indicate that protection is in effect. To provide
protection, the unit will not output any sound from the speakers
while this indicator is lit up. It will light up if the heat sink aberheats,
or if a DC voltage is detected at the amplifier outputs. Also it will light
up for about a few seconds at time of power-on, as the amplifier gets
ready to operate.
4 Power
switch Switch on ad off the power supply. It will light up green when switch
on.
English version