Technics SL-DV250 Service Manual page 45

When the unit SL-DV250 has to test and service alone, use the following method to supply power
source.
1. Connect a DC power supply to JK1-5pin and JK1-6pin and .
Then adjust the outputs to 10V for 5pin (refer to Fig. 4 and Fig. 5)
Fig. 4
Fig. 5
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