长虹型分体式冷暖空调，不工作 检修方法57w

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长虹分体式冷暖空调，不工作
故障现象：通电后，室内、外机都不能启动，且指示灯均不亮，蜂鸣器也无声。
5 B) {7 X8 h) i& W分析与检修：测主板变压器初、次级阻值均正常，测稳压电路７８１２电压输出电压为 ＋１２Ｖ，７８０５电压输出为＋５Ｖ，说明电源部分正常。检查室外压缩机、启动电容以及室内 步进电机均正常，怀疑故障可能在微电脑ＩＣ１（ＣＰＵ７５８０８ＢＣＵ）部分及外围元件，测ＩＣ１ 21 脚为＋５Ｖ、③脚为５Ｖ（高电平）正常，进一步查得４.１９ＭＨｚ 晶振损坏。
维修措施：更换４.１９ＭＨｚ 晶振，试机，故障排除。
. n( P! e/ v1 D$ T; E- f资料来源；北京长虹空调维修电话中心。

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Some elements were the same from the Air  puma store , but the Air Jordan V's most distinctive feature is arguably its reflective tongue. There was also another innovation: clear rubber soles puma ferrari shoes . The soles gave the shoe a ...