Tascam CD 601 schematic service manual ?

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M

mbl

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Joined 2007
I would like to use DC battery instead of AC transformer for power the CD player . Then I used +12v,+5v, -12v, -5V DC battery to replace 7805,7905,7812,7912 regulator. However, no response.

What is the reason?

Any additional DC that I need to supply for the IC and other devices?
 
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