Troubleshooting; Problem: No Sound; 问题:没有声音 - QSC DCA1222 User Manual

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Key • Légende
Zeicherklärung • Leyende
= lit
allumé
aufgeleuchtet
illuminado
= blinking
clignotant
blinkt
parpadeo
= off
éteint
aus
apagado

TROUBLESHOOTING

Problem: no sound

Indication: POWER indicator not lit
• Check the AC plug.
• Confi rm that the AC outlet works by plugging in another device. If too many
amplifi ers are used on one outlet, the building's circuit breaker may trip and
shut off power.
• An overload in bridged mono mode may cause the amplifi er to click off for
three seconds, indicated by the half-bright POWER LED, followed by a nor-
mal restart cycle. Check the load impedance (4 ohms minimum), or reduce
signal level. CLIP LEDs glowing bright red indicate a thermal shutdown.
• An amplifi er which keeps shutting off may have a serious internal fault.
Turn it off, remove AC power, and have the amplifi er serviced by a qualifi ed
technician.
Indication: signal LED not lit
• If the green POWER indicator LED is at full brightness, yet the signal LEDs
indicate no signal, check the input. Make sure the signal source is operat-
ing and try another input cable. Connect the source to another channel or
amplifi er to confi rm its operation.
故障排除
问题:没有声音
现象:电源指示灯未亮
• 检查 AC 插头。
• 通过插入另一个设备,确认交流电源插座可用。如果在一个插
座上使用过多放大器,所在建筑的断路器可能会断开并关闭电
源。
• 桥式单声模式中的过载可能导致放大器断开三秒钟,如一半亮
度的电源 LED 所示,接着开始正常的重启过程。请检查负载
阻抗(至少 4 欧姆),或降低信号水平。削波 LED 以亮红色
发光,这表示热量关闭。
• 如果放大器经常关闭,则可能是内部出现严重故障。请关闭放
大器,断开交流电源,由合格的技术人员对放大器进行维修。
现象:信号 LED 指示灯不亮
• 如果绿色的电源 LED 指示灯全亮度发光,而信号 LED 指示灯
不指示信号,请检查输入端。确保信号源正在工作,换一根输
入电缆再试。将信号源连接至另一个声道或放大器,确认其正
常工作。
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Troubleshooting

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Dca 1622Dca 1644Dca 1824Dca 2422Dca 3022Dca 3422

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