故障检修:据故障现象分析,确定为行枕校电路某元器件参数性能变化所致。而枕校电路中唯有RP401(10K)RP404(47K)参数最容易变化,经检测为RP404阻值发生变化。更换RP404并调整,故障排除。 |
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