论文部分内容阅读
英国声艺(SPIRIT)实力公司生产的24路LX7-24系列调音台,其可靠性及操作性比较好,在广播系统的电视台、电台中拥有量逐渐增大,但由于一些控制元件在使用中需要频繁地调整和控制而产生磨损,出现一些故障。例1 [现象]音量推拉电位器出现噪声或接触不良。 [分析与检查]这种长行程直滑式电位器,其质量要求较高,一般不容易购到原装件更换,若随便购一个推拉电位器来更换,则音质根本不能保证,最好的办法是进行修复。 [措施]先拆下4个边框,再旋下8枚螺丝,卸下电位器外壳,用无水酒精擦洗碳膜片和接触片,清洗完毕后,擦干残存酒精,在碳膜片和接触片上涂一层硅脂或硅油,装好电位器外壳,用三用表测试接触良好后,将电位器装回原电路。按上述步骤清洗后的音量推拉电位器一般还可再用较长一段时间。例2
The 24-channel LX7-24 series mixer produced by SPIRIT Power Company has relatively good reliability and operability. It gradually increases in the number of broadcast stations and radio stations. However, due to the use of some control components In the need for frequent adjustment and control of wear and tear, there are some failures. Example 1 [Phenomenon] Volume Boost Potentiometer Noise or poor contact. [Analysis and Inspection] This long stroke straight slide potentiometer, the higher quality requirements, the general is not easy to buy original parts replacement, if you casually buy a push-pull potentiometer to replace, the sound quality can not be guaranteed, the best way Is to repair. [Measures] First remove the four borders, and then unscrew the eight screws, remove the potentiometer housing, scrub carbon film and contact tablets with anhydrous alcohol, after cleaning, dry residue of alcohol, the carbon film and contact Chip coated with a layer of silicone grease or silicone oil, installed potentiometer shell, with a three-table test good contact, the potentiometer back to the original circuit. Push the volume after the above steps to push and pull the potentiometer can generally reuse a longer period of time. Example 2