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ELECTRICAL
ADJUSTMENTS
AUDIO
OSCILLATOR
PARTS
ATTE-
NUATOR
LINE
IN
OSCILLOSCOPE
Before following adjustment, head cleaning is needed.
A.
Playback Level Adjustment
_ TAPE
SELECT switches:
NORMAL
DOLBY
NR Switch:
OFF
Test Tape:
MTT-150
1. Playback the test tape with the TAPE A deck.
2. Adjust the SVR701
(Left Channel)
and SVR801
(Right Channel) to obtain 0.56 V output on VTVM.
3. Playback the test tape with the TAPE B deck.
4. Adjust the SVR702
(Left Channel)
and SVR802
(Right Channel) to obtain 0.56V output on VTVM.
NOTE:
When
0.56V
output
is obtained
on VTVM,
confirm that the +3VU LED is illuminating.
Record Level Adjustment
TAPE SELECT Switches:
CrO2
DOLBY
NR Switch:
OFF
Test Tape:
AC-512
1. Insert the test tape into the TAPE B deck.
2. Press the PAUSE
button
and then
press the RE-
CORD button.
3. Apply 1kHz, 19dB input to the LINE IN jacks of
the set.
LOCATION
4. Adjust the record
monitor output to 0.36V with
INPUT LEVEL control.
5. Release the PAUSE
button
and record the input
signal.
6. Playback the recorded section and confirm that the
output is 0.36 V.
7. If not,
adjust
the
SVR703
(Left
Channel)
and
SVR803
(Right Channel)
and then repeat the re-
cord/Playback
until 0.36V
output
on playback
is
obtained.
Record/Playback Frequency Response Adjustment
TAPE SELECT Switches:
NORMAL
DOLBY
NR Switch:
OFF
Test Tape:
AC-223
1. Record
the 1kHz
and
10kHz
39dB
input signal
continuously.
2. Playback
the
recorded
section
and
compare
the
output level of 10kHz with 1kHz.
They should be
same output levels.
3. If there is difference of output between
1kHz and
10kHz,
adjust the SVR704
(Left Channel)
and
SVR804
(Right
Channel},
and
then
repeat
the
record/playback until same output level is obtained.
RECORD/PLAYBACK
FREQUENCY
RESPONSE (TAPE
B)
iQ) svar0«
@®)svrso.
RECORD
LEVEL(TAPE
B)
SVR803 Al
:
@ $VR703
PLAYBACK
LEVEL(TAPE
8)
©) SVR802
©
SVR702
PLAYBACK
LEVEL(TAPE A)
a
sero ©
I sveeo
Za
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