Sony CFD-21 - Page 8

Record/Playback
Head
Azimuth
Adjustment
Procedure:
1.
Mode:
FWD
playback
test tape
P-4-A063
(6.3kHz,
—10dB)
VTVM
=
PHONES jack
2.
Turn
the
adjustment
screw
for
the
maximum
output
levels.
If
these
levels
do
not
match,
turn
the
adjust-
ment
screw
until
both
of
output
levels
match
together
within
1dB.
LH
peak
R-CH
peak
Screw
position
RCH peak
L-CH peak
3. Phase Check
Mode: playback
test tape
P-4-A063
(6.3kHz,
—10dB)
Le
oscilloscope
H 32.9
PHONES jack
QO@OOQ@Y
in phase 45° 90° 135° 180°
Peake cake,
wrong
good
4. Set in the REV mode and repeat the step 1-3. (CFD-30)
5.
After
the
adjustment,
lock
the
screws
with
locking
compound.
Adjustment Location: Record/playback head
—CFD-20— —CFD-30—
Adjustment screw
SS:
Adjustment screw’ REV FWD
Record Bias Adjustment
Procedure:
Mode : REC
ISS/FM MODE switch : 2/STEREO
Procedure:
1. Connect the frequency counter as shown below.
2.
Adjust
with
T101
so
that
the
reading
on
the
frequency
counter
becomes
76kHz.
{AUDIO
BOARD)
(CONDUCTOR
SIDE)
.
frequency
counter
Adjustment Location :
[AUDIO BOARD] (COMPONENT SIDE)
7101 REC BIAS
Adjustment
cN406