Audio/Ctl Head Azimuth And Tilt Adjustment; Playback Level Adjustment; Line Output Level Calibration - Sony AV-3600 Service Manual

7-1-
AUDIO/CTL
HEAD
AZIMUTH
AND
TILT
ADJUSTMENTS
Test
Point:
TP-502 (Audio Output)
Adjust
for:
Maximum
output
reading
on
VTVM
azimuth
adjustment screw
tilt
adjustment
screw
Fig.
7-1.
Adjustment:
Signal
Source:
Equipment
Required:
Audio /CTL head
azimuth
and
tilt
adjustments
Azimuth
and
tilt
adjustment screws
7
kHz
audio
signal of
SONY
Align-
ment Tape
(1)
AC
VTVM
(2)
SONY
Alignment Tape
Procedure:
1.
Play
back
the
SONY
Alignment Tape.
2.
Connect
a
VTVM
to
TP-502.
3.
Adjust azimuth and
tilt
for
maximum
indication
on
the
VTVM
using the 7
kHz
tone.
See
Fig.
7-1.
7-2.
PLAYBACK LEVEL ADJUSTMENT
Test Point:
Adjust
for:
Adjustment:
Equipment
Required:
Set-up
:
Procedure:
TP-502 (Audio
Output)
dB
(0.775V) output
R515(PB
Level)
(1)
AC
VTVM
(2)
SONY
Alignment
Tape
(3)
1
00 k£2
resistor
See
Fig. 7-2.
1.
Connect
the ac
VTVM
to
TP-502
using
a
100
k£2
load resistor as
shown
in Fig. 7-2.
2.
Play back the
SONY
Alignment Tape
(1
kHz
tone).
3.
Adjust
R515
(Playback
Level) to obtain
a
read-
ing of
dB
(0.755
V) on
the
VTVM.
A
V-3600
lA
TP-502
on
A
Board
100 kSl
777
777
VTVM
Fig. 7-2.
Audio
playback
level
and
frequency
response adjustment
set-up
7-3.
LINE
OUTPUT LEVEL
(Record
mode;
Record
Level)
CALIBRATION
Test Point-
Adjust
for:
Adjustment-
Signal Source:
Equipment
Required:
Set-up:
Procedure:
TP-502
(Line Output)
0.775
V(0dB)
at
TP-502
for
0.4
mV
(-65
dB)
MIC
input
R521
(Line
Output
level,
Record)
1
kHz
audio
signal
(1)
AC
VTVM
(2)
Audio
oscillator
(3)
Attenuator
(4)
100
k£2 load
resistor
See Fig. 7-3.
1.
Connect
the
VTVM
to
TP-502
using
a 100
k£l
load
resistor as
shown
in Fig. 7-3.
2.
Connect
the audio
oscillator
and
the attenuator
as
shown.
3.
Set
up
the E-to-E
mode.
4.
Feed
a
1
kHz
signal
of
-65 dB
(0.4
mV)
to
the
MIC
IN
jack.
5.
Adjust
R521
(Line
Output
Level) to obtain
a
VTVM
reading of
dB
(0.775 V).
7-2