a pickup base carrying an optical pickup and having a first supporting section formed with a guide hole for allowing the main shaft to run through it and a second supporting section formed with a guide groove for pinching {HEAD ~ the sub shaft} of a disc drive unit with a smaller distance separating {TAIL ~ the main shaft} and the sub shaft arranged opposite relative to each other, 
a pickup base carrying an optical pickup and having a first supporting section formed with a guide hole for allowing the main shaft to run through it and a second supporting section formed with a guide groove for pinching { HEAD ~ the sub shaft } of a disc drive unit with a smaller distance separating { TAIL ~ the main shaft } and the sub shaft arranged opposite relative to each other ,
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