Sony WM-FX522 - Tuner Section Alignment; Tuner Adjustment Locations

13
WM-FX522
• AM alignment should be done with mechadeck attached.
•Repeat the procedures in each adjustment several times for a
maximum reading on level meter.
AM VT VOLTAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation 531kHz 1.3 ± 0.3 V
Confirmation 1602 kHz 7.0 ± 0.5 V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L5 621 kHz
CT1 1395 kHz
FM VT VOLTAGE ADJUSTMENT
Adjustment Part Frequency Display Reading on Digital Voltmeter
Confirmation 87.5 MHz 3.85 ± 0.5 V
Confirmation 108 MHz 7.7 ± 1 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L7 87.5 MHz
Confirmation 108 MHz
TUNER SECTION 0 dB=1 µV
[AM]
Setting:
function : RADIO
BAND button : AM
[FM]
Setting:
function : RADIO
BAND button : FM
+
–
digital voltmeter
TP5 (VT)
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
+
–
level mete
r
set
16 Ω
i jack (J301)
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
+
–
level mete
r
i jack (J301)
set
16 Ω
0.01 µF
TP61 (FM RF IN)
Adjustment Location:
TP5
(VT)
TP61
(FM RF IN)
TP2
(GND)
L7
FM Tracking Adjustment
AM Tracking
Adjustment
RV601 Tape Speed Adjustment
CT1
L5