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Control/Switch Setting:
PB VOL control: mechanical midway
Procedure:
l.
Mode: playback
SPC-4
digital frequency
counter
(1 kHz,
0 dB}
k
,
MONITOR
power source:
5 Vde
Specification: 990 ~ 1000 Hz
2.
If necessary, adjust R101
R101 3k, adjustable
Test Equipment/Tools Required
audio oscillator (af osc)
VT VM
digital frequency counter
1 kHz bandpass filter
10 k&2 resistor
attenuator (600 2)
SONY test tapes
servo
P-4-A81
(6.3 kHz, —10 dB)
control!
P-4-L81 (333 Hz, 0 dB)
eieir
board
SPC-4 (1 kHz, 0 dB)
WS-48 (3 kHz, 0 dB)
blank tape cassette (completely erased)
empty cassette
wow
meter
resistors (8 £2, 1 W) (10 k{2, 1/4 W) (600 2, 1/4 W)
= 13
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