Sony WALKMAN WM-F702 - Page 5

2, Phase Check
7 test tape
P-4-A063
(6.3kHz, — 10dB)
oscilloscope
Screen pattern
in phase 45° 90° 135° 180°
eae aera
good wrong
Tape Speed Adjustment
Procedure :
test tape
WS-48A
(3kHz, OdB)
frequency counter
Plug conversion adaptor
1,
Playback
WS-48A
(tape
center
portion)
in
FWD
mode,
Adjust
the
RV601
so
that
the
frequency
counter
reads
3,000Hz+
15Hz,
2,
Playback
WS48A
(tape
center
portion)
in
REV
mode,
Confirm
that
the
reading
of
frequency
counter
is
within
2.0%
from
the
reading
in
step
1,
Adjustment Parts Location Diagram
RV601
|
«
[Radio Section) (WM-F702 only)
AM SECTION
BAND switch : AM
digital
voltmeter
- wa
(TUN VOL)
t |
te}
+
AM TUNING VOLTAGE ADJUSTMENT
Adjust for following values on digital voltmeter
Bee
|
US
model
AEP,
UK,
ET,
AUS
model
AM Tracking Adjustment
AM RF SG Put the lead-wire
antenna close to
Ww the set,
C7
30% amplitude
modulation by
400Hz signal VTVM
(range : 0.5—5Vac)
Plug conversion adaptor
@
Repeat
the
procedures
in
each
adjustment
several
times,
andthe
tracking
adjustment
should
be
finally
done
by
the
trimmer
capacitors,
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
US model
ET, AUS
Adjust for a maximum reading on VTVM.