Section 2 Electrical Adjustments - Sony ICF-C730 Service Manual

SECTION 2
ELECTRICAL ADJUSTMENTS
AM SECTION
AM RF signal
generator
Put the lead-wire
fw antenna close to
the set.
(commen
400Hz, 30%
AM modulation
Output level: as low as possible
FM SECTION
FM RF signal
generator
0.01 u F
: ee
+ 22.5kHz frequency deviation
by 400Hz signal
lead wire
antenna input terminal
Speaker terminal
@ Repeat the procedures in each adjustment
several times, and the frequency coverage and
tracking adjustments should be finally done
by the trimmer capacitors,
Adjustment Location: main board
S
6 ®
AM IF ADJUSTMENT
Adjust for a maximum reading on VTVM
455 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on VTVM
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM
600 ke
Adjust for a maximum reading on VTVM
86.5 (87.35) (87.35) MHz
L3-1, 3-2 86.5 (87.35) (87.35) MHz
109.5 (107.9) (108.25) MHz
( ): AEP, E, AUS model
( ): IT model
lead wire antenna input terminal
Q 4
—
ee:
cT1 ae LS
C2 = S aa a
Y dd
Tee
5 | = N 3-13,
OF: Ww Q-—
1
RV2 ®
L3-2