Realistic STA-115 - Page 18

CONNECTION
Tone Control
Operation
Check
Connect audio
osc.
to AUX/TV input
jack.
Connect
oscilloscope and V.T.V.M. to
speaker
terminal.
Connect BO load to speaker output.
Set SELECTOR switch to AUX/TV
position.
TAPE MONITOR:
OFF
MONO
switch:
STEREO
LOUDNESS:
OF
F
a
a
a
a
o
a
a
oscrlloscoPE v_ T- v. M.
auDr o osc.
f---
--
iCfreck BASS action at
100
Hz.
i
t_
_
_
-
_
_ _ ___t
**
TONE CONTROL Curve"*
Figure
14
roo rk
*
AUDIO FREQUENCY
(Hz)
(1)
Check bass
control circuit
on TUNER
AUDIO
P.C.B.
(2)
See
TROUBLESHOOTING
on
page
35.
Frequency response does
not
fall
within
11012.5
dB.
Frequency
response
falls within
t
10
t2.5
dB.
G +ro
3
l!
2o
I
I
a
u
-to
E.
t
trtroooDtrUtrCo
O
sTA
-
ll5
Figure
TONE
CONTROL CURVE
.lOO
Hz
EASS
t
ro kH, tneeLe
)
R EPAIR
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