文档介绍：actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building underto the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
逻辑板：将主板提供过来的数字信号转换成为控制液晶屏透光或阻挡光线透过的逻辑信号主板驱动信号
信号转换电路
缓存器
显示屏及显示翻转驱动电路
检修方法：
1、黑屏〔背光板亮〕，这种故障一般为逻辑板不良
2、画面有噪点或者有图像出现色斑。这种故障一般为逻辑板不良
C〕：显示屏：控制光线透过或不让光线透过〔显示屏不良不作维修〕
备注：液晶屏的组成比拟简单，维修只要围绕着背光板和逻辑板来维修就可以了。通过故障现象分析和维修代换确定故障范围。然后进行电路维修。
二，驱动板维修
一〕驱动板的简单构成，一般是由电源供电，高压逆变，控制电路和保护电路等几局部组成。见下列图〔图2〕
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee collection tasks. 5, further standardize internal management, improve staff quality. Adhere to the
actively carry out the law on civil air defense education, drawn out of the air defense in Pingliang city Building under easy fare, daily special inspection and regulation, overfulfilled the province upper and lower knots of up to 500,000 yuan fee co