OK?..manual is complet and helpfull... for repairing such a old and rare boombox like JVC PCM it is necessary...
Text excerpt from page 5 (click to view)
ICF-M410L SECTION 3 ELECTRICAL ADJUSTMENTS
MW/LW SECTION
BAND : AM � Repeat the procedures in each adjustment several times for the maximum level meter indication. � The frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T15 450 kHz
AM RF signal generator Put the lead-wire antenna close to the set.
MW/LW FREQUENCY COVERAGE ADJUSTMENT
30% amplitude modulation by 400Hz signal. Output level : as low as possible
Adjust for a maximum reading on level meter. LW MW CT4 L4 153 kHz 531 kHz
FM SECTION
BAND : FM LW MW
MW/LW TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. ANT102 CT2 ANT102 CT1 162 kHz 243 kHz 603 kHz 1,404 kHz
FM RF signal generator
0.01µF
telescopic antenna terminal
FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L6 87.5 MHz CT3 108 MHz
75kHz (100%) amplitude modulation by 1kHz signal. Output level : as low as possible
[Adjustment Location : Main board] (Component side)
level meter 16 � set + �
MAIN BOARD (Component side)
L6,CT3 T1 FM TRACKING AM IF adjustment adjustment
CT1 MW TRACKING adjustment
Speaker terminal (EPJ301)
L4 MW FREQUENCY CT2 COVERAGE LW TRACKING adjustment adjustment CT4 LW FREQUENCY COVERAGE adjustment
