Tape Speed Adjustment - Akai GX-747 dbx Service Manual

V R I 5 0KB VR2 20KB
(3- 3/4in) (7- l /21nl
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10. TAPE SPEED ADJUSTMENT
(Refer to Fig. 7-10)
Set the Tape Speed Switch to 7-1 /2 ips. and playback
the 1,000 Hz , 7-1 /2 Test Tape . Connect a frequency
counter to LINE OUT and adjust VR2 20 kB until
the counter reads , 1,000 Hz ± 0.8%. Next. set the
Tape Speed Switch to 3-3/4 ips. and adjust VRI 50
kB until the frequency counter reads 500 Hz± 1.0%.
POWER SUPPLY 8i
SYSCON
PCB
Fig. 7-10
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