Yamaha DVX-S150 Service Manual page 20

DVR-S150/NX-P150
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When checking the P.C.B.:
Turn on the power to NX-SW150 according to the following
procedure.
a. Short between the terminals of RY2 (relay).
b. Connect the power cable to the AC power outlet.
TE
L 13942296513
Short between these terminals for the P.C.B. check.
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