Sony TC-188SD - Record;playback Head Azimuth Adjustment; Playback Level Adjustment

TC-188SD
Record/playback
Head
Azimuth
Adjustment
Playback
Level
Adjustment
Procedure:
Procedure:
1.
Mode:
Playback
1.
Mode:
Playback
test
tape
P-4-A81S
VTVM
oo
cae
(6.3
kHz,
-10
dB)
(333
H
VTVM
100k2
|
7
z,
OB)
LINE OUT
LINE OUT
2.
Turn
the
adjustment
screw
for
the
maximum
0.55V
(-3
dB)
level
and
set
it
to
the
mechanical
mid
position
between L-CH and R-CH
peak position.
Adjust
RV102
(L-CH)
and
RV202
(R-CH)
to
obtain
0.55
V
(-3
dB)
VIVM
reading.
2. Assure that the LINE OUT level does not
change when the mode is changed from play-
L-CH back to stop several times.
peak
eb sae Specification:
LINE OUT level: 0.52—0.58V
R-CH
within
0.5
dB
(-2.5
—-3.5
dB)
adjustment
Peak
rr
Level
difference
between
channels:
Screw
shel
ae
Tce
less
than
0.5dB
3.
Mode:
Playback
Adjustment
Location:
test oy
P-4-A81S
RV102
(L-CH)
RV202
(R-CH)
(6.3kHz, -10dB)
L-CH 100k2 oscilloscope
te & O& en Ya € io . Sar
ae ee Oo ms ete fe
3 Negecdiaameuats ane peer whe ~ Lr ‘oe
ik Bie “3 a
ror al ea we “
LINE OUT
Screen pattern
in-phase 45° 90° ade 180°
ed
good wong
Adjustment Location:
adjustment screw