Panasonic SA-DK3 Service Manual page 57

10.1.3. Tape Speed Adjustment (Deck 1/2)
1. Insert the test tape (QZZCWAT) to Deck 2 and playback (FWD side)
the middle portion of it.
2. Adjust motor VR (Deck 2) for the output value shown below. /
Adjustment target : 2940 - 3060Hz (NORMAL speed)
3. After alignment, assure that the output frequency of the DECK2
REV and DECK1 FWD are within ±45Hz and ±60Hz respectively of
Fig.3
Fig.4
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