Sony Walkman WM-SR10, Service Manual

Page: 9 / 26

9
WM-SR10
[AM]
BAND : AM
[FM]
BAND : FM
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 505 kHz (516.5 kHz)
CT1-4 1,680 kHz (1,631.5 kHz)
( ) : EA MODEL
TUNER SECTION
0.01
µ
F
FM RF signal
generator
to ANT (FM IN)
75kHz frequency deviation by 1kHz signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
30% amplitude modulation by 400 Hz
signal.
Output level : as low as possible
AM RF signal
generator
set
+
–
level meter
2
jack (J301)
16
Ω
0dB=1
µ
V
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1 455 kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 86.0 MHz (87.35 MHz)
CT1-3 109.5 MHz (108.25 MHz)
( ) : EA MODEL
• Repeat the procedures in each adjustment several times.
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 621 kHz
CT1-1 1,404 kHz
[MAIN Board] — SIDE B —
Adjustment Parts Location :
[MAIN Board] — SIDE A —
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2 86.0 MHz (87.35 MHz)
CT1-2 109.5 MHz (108.25 MHz)
( ) : EA MODEL
• Abbreviation
EA : Saudi Arabia model
CT1-3
CT1-4
CT1-2
CT1-1
RV601
L4
L3
L2
T1
L1
CT1-3 : FM frequency
coverage adjustment
CT1-4 : AM frequency
coverage adjustment
CT1-2 : FM tracking
adjustment
CT1-1 : AM tracking
adjustment
RV601 : Tape speed adjustment
L4 : AM frequency
coverage adjustment
L3 : FM frequency
coverage adjustment
L1 : AM tracking
adjustment
L2 : FM tracking
adjustment
T1 : AM IF
adjustment