Sony STR-V4L - Page 8

STR-V4L
LW SECTION |.
Setup: FUNCTION switch: LW
AM ANTENNA switch: BUILT-IN
AM rf signal
generator
; Mn Put the lead-wire
antenna close to
O the set.
30% amplitude
medulation by
400 Hz signal
IFT401 and CFT401 are adjusted
in the factory, so no adjustment
of AM IF is necessary.
1FT407 . CFT401
adjustment knob
L403
LW EXT ANTENNA COIL ADJUSTMENT
AM rf signal
generator
Carrier frequency: 230 kHz
30 % amplitude modulation
by 400 Hz signal
LWdummy antenna
Note: Repeat the LW and MW Tracking
Adjustment alternately.
vom
frange: 0.5-5V ac}
REC OUT 1
@ Repeat the procedures in each adjustment
several times, and the frequency coverage
and tracking adjustments should be final-
ly done by the trimmer capacitors.
LW TRACKING ADJUSTMENT
Adjust for a maximum reading
on VOM.
L402 (LW) 170 kHz
LW FREQUENCY
COVERAGE ADJUSTMENT
Adjust for a maximum reading
on VOM. ;
CT404. 365 kHz
L408 145 kHz
AM
external
antenna
terminal
\
REC OUT!
_ 1. Set the AM ANTENNA switch to EXT position.
2. Tune the set to 230 kHz and adjust L403 for a maximum
reading on VOM.