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一、故障改进措施 1.HH—2589A、HH—2948A型彩电,在接收低频道开路弱信号时,可能会出现黑色宽条斜线干扰。原因分析:上述现象与目前能模拟出的遥控时钟干扰现象相像,当接收低频道开路弱信号时将会出现此故障,而其他状态时却无此现象。改进措施:改变遥控地线走向,能减轻该现象。在N906(WL6805)的(20)脚附近的铜箔面增加跨线一根。跨线规格为:AVZR—505—300—710.2EX,长度50mm,剥头长度5mm。
First, fault improvement measures 1.HH-2589A, HH-2948A-type TV, in the reception of low-channel open weak signal, there may be black wide slash interference. Cause Analysis: The above phenomena are similar to the remote control clock interference that can be simulated at present. This fault occurs when the weak signal of low channel open is received, but not in other states. Improvements: Changing the direction of the remote control ground can alleviate the phenomenon. In the N906 (WL6805) (20) near the copper foil surface increased by a cross. Cross-line specifications: AVZR-505-300-710.2EX, length 50mm, scalping length 5mm.