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| modify SG fine tune trimmer |
input signal p--p level
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| input signal p-p level |
| normal sprag wheel stop position |
| When jukebox playback stuck some sequence then turn off jukebox power. Fix machine jam problem and usage tool turn sprag wheel to original position. | | |
| Make sure sprag wheel push these two relay in close position. | as below picture. |
| re-turn on power |