转帖 工厂模式的进入（是否有用阿……）

主机操作In case of setting the test mode only by keys on the set:
In the normal mode, turn on the [HOLD] switch. While pressing
the [GROUP] key press the following order:
快进、快进、快退、快退、快进、快退、快进、快退、暂停、暂停
线控操作In case of setting the test mode by keys on the set and
remote commander:
In the normal mode, turn on the [HOLD] switch on the set.
While pressing the 停止 key on the set, press the keys on the
remote commander with the following order:
快进、快进、快退、快退、快进、快退、快进、快退、退10首、退10首