Section 2 Electrical Adjustments; Adjustment Location - Sony ICF-SW15 Service Manual

SECTION 2
ELECTRICAL ADJUSTMENTS
[MW SECTION]
BAND switch : MW
AM rf signal
generator
put the lead-wire
antenna close to
| CR
A the set
(Co)
30% amplitude
modulation by 400Hz signal
Output level: as low as possible
[Sw SECTION]
BAND switch : SW
AM ff signal
generator
CEN 7pF
30% amplitude modulation
by 400Hz signal
Output level: as low as possible
[FM SECTION]
BAND switch : FM
FM rf signal
generator
0.01uF
-—= ANT IN
400Hz, 30% FM modulation
frequency deviation +22.5kHz
Output level : as low as possible
EARPHONE jack
® Repeat the procedures in each adjustment several times,
and the frequency coverage and tracking adjustments
should be finally done by the trimmer capacitors.
@SW1 to 7 Tracking Adjustment frequencies are in a line
on the scale.
Therefore, on adjusting, first SW1 6.1 MHz and after
adjust SW2 to 7 Tracking without moving the dial
pointer.
( ): AEP, UK, Germany, Italian, Saudi Arabian model
MW IF ADJUSTMENT
Adjust for a maximum reading on VT VM.
455 kil
SW IF (1) ADJUSTMENT
Adjust for a maximum reading on VTVM. (06 Mi
SW IF (2) ADJUSTMENT
Adjust for a maximum reading on VT VM.
455 kil
SW1 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT'VM.
SW2 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM. | ,
SW3 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM.
0.7 Mi
SW4 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM.
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on VTVM.
CT2-2 109.5 MHz (108.05 MHz)
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on VT'VM.
g0 Mitz (87.35 Mii)
CT2-1 104 MHz (108.05 MHz)
SW5 TRACKING ADJUSTMENT
Adjust for a maximum reading on VT VM.
| SW6 TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
17.895 Mit
SW7 TRACKING ADJUSTMENT
Adjust for a maximum reading on VITVM
ADJUSTMENT LOCATION
[MAIN BOARD] —Conductor side—
Ti
SW IF (1) Adjustment T2
SW IF (2) Adjustment L12
[MAIN BOARD] —Component side— CT2-4 [Mw Tracking Adjustment
ej
' a, en
JO P
3 al
FN
seo 4 J,
SW1 Tracking Adjustment
L4
SW4 Tracking Adjustment
T4
SW1 Frequency
1 Coverage Adjustment
C123)
n
L15 aes
SW7 Tracking Adjustment Coverage Adjustment
L5 L6 CT2-2
SW5 Tracking Adjustment SW6 Tracking Adjustment L14 FM Frequency
Coverage Adjustment
CT2-1
es FM Tracking Adjustment