— 10 —
Digital
voltmeter
TP
(VT)
IC1
+
–
AM RF SSG
Put the lead-wire
antenna close to
the set.
Modulation : 400 Hz, 22.5 kHz dev. (30%)
Output level : as low as possible.
VTVM
(AC : 0.5–5V range)
16
set
REMOTE jack
AM IF ADJUSTMENT, AM TRACKING ADJUSTMENT
• Repeat the procedures in each adjustment several times, and
the tracking adjustment should be finally done by the
trimmer capacitors.
Adjustment Part Location Diagram :
[TUNER BOARD]
IC2
TP
(GND)
VCO ADJUSTMENT
RV1
CT1
AM TRACKING ADJUSTMENT
L6
AM TUNING
VOLTAGE
ADJUSTMENT
T1
TP
(ANT)
FM IF ADJUSTMENT
L5
AM IF ADJUSTMENT
T2
AM IF ADJUSTMENT
Adjust for a maximum reading on VTVM.
T2 1395 kHz
AM TUNING VOLTAGE ADJUSTMENT
Adjust for a 1.20 ± 0.03 Vdc reading on Digital voltmeter.
T1 531 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on VTVM.
L6 621 kHz
CT1 1395 kHz
AM SECTION
Setting :
FUNCTION switch: RADIO
BAND switch : AM
AM TUNING VOLTAGE ADJUSTMENT
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
To Next Page
Loading...
Need help?
General
