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故障现象:图像行、场不同步。出现此类故障时,首先输入TV/AV信号,观察图像是否正常。若仍不同步,则输入VGA信号观察图像是否显示正常。若图像能正常显示,则说明GM5221工作正常,应检查FLl2300是否不良。若良好,则检测VCP3230I2C总线电压是否正常。若正常,则检查VPC3230及其外围元器件是否不良。实际检修中,因VCP3230本身不
Symptom: image line, the field is not synchronized. In the event of such failures, first enter the TV / AV signal to observe the image is normal. If still not synchronized, then enter the VGA signal to observe whether the image shows normal. If the image can be displayed normally, it means that GM5221 is working properly and FLl2300 should be checked for bad. If good, then test VCP3230I2C bus voltage is normal. If normal, then check the VPC3230 and its peripheral components is bad. Actual maintenance, because VCP3230 itself is not