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故障现象:磁带穿带到位后就出现保护停机,重开电源退带时,磁带不能收入带盒内,且在快进和快倒状态仍出现保护停机。故障检修:开盖检查发现主导轴电机在各功能状态始终不转。在停止状态测主导轴电机驱动集成块IC4(BA6209),第④脚电压只有0.07V,而正常为
Symptoms: tape wear occurs in place after the protection downtime, re-open the power withdrawal, the tape can not be income with the box, and in fast forward and fast down state protection downtime. Troubleshooting: Open lid inspection found that the main shaft motor in each functional state does not turn. In the stop state test capstan motor drive manifold IC4 (BA6209), the first ④ pin voltage is only 0.07V, while the normal