Teac A-4070G - Page 21

FREQUENCY
RESPONSE
———<——
$$
1.
Place
TEAC
test
tape
YTT-1003
(using
7-1/2ips),
yTT-1002
(Using
3-3/4ips)
on the
unit.
2.
Compare
the
readings
obtained
on
the
level
meter
with
the
re-
sponse
limits
given
in
Fig.7-3
3.
Forward
and
reverse
playback
frequency
response
should
be
identical.
RESPONSE iN dB
[eT 2 i a 27
50 100 500 1K 5K 10K 50K
FREQUENCY 1N Hz M-0288
Fig. 7-3 Frequency Response ~playback-
HEADPHONE OUTPUT CHECK
1. Place OUTPUT controls at specified level setting (400 Hz signal
at -8 dB).
2. Connect an 82 non inductive resistor across the headphone output,
connect level meter across the resistor.
3. Level meter should indicate -24 dBm +2 dB.
Fig. 7-4 Headphone Connecting Resistor