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TUNER ADJUSTMENTS
.
Use a
plastic screw driver for
adjustments.
. Adjust
the intermediate
frequency
of AM and FM to the
Supply voltage
: DC 12.OV
Phones impedance
:32 ohm
r
n
TP202
Standard
output
:50
mW (450 mV)
=J2001
Function
switch
: RADIO
PARTS
LOCATION
"
Ilm==i=
I 1 1~
Ill
1
1+
TP201
L2103
,.
k
frequency
of ceramic
filter.
—
c
Ah4{FM
IF OUT
/
\
;NT
BAND SELECT SWITCH
:
Al
a. A
Step
ADJUSTh
Conrt
Incmt
lions
+
VTVM
Oscilloscope
Adjusting
Circuit
Outrxrt
Closed
the
output
terminal by sweep
generator, it place
10
L2103.
Connect AM SG
to
Test Loop
Connect AM SG
to
Test Loop
Connect sweep
generator to
C2106
(H) &
TP202
(G)
;onnect
VTVM
10
speaker terminals
-4-
455
kHz
Low
XF213
517 kHz
Low end
1,
L2104
1750 kHz
High end
VCT -4
600 kHz
600 kHz
I
L2103
1
2
3
4
5
6
b. Ffi
Step
IF
Tuning
coverage
Max.
Oonnect
VTVh(
to
speaker terminals
Tracking
Max.
1400 kHz
1400 kHz
I
VCT -3
iepeai adjustments
>alance
VTVM
Oscilloscope
ADJUSTh
Adjusting
Circuit
NT
BAND
SELECT
SWITCH
: FM
FM Dummy
anten
Connections
SG Frequency
Position of tuning dial
Input
output
Connect sweep
Connect sweep
generator to
generator to
10.7 MHz
Low
IC201 @ (H)
C2106
(H)
, :75
ohm
u
Adjustment
n
1
IF
...
& TP202
(G)
& TP202
(G)
Connect
FM
SG
Connect
VTVM
to
87.0 MHz
Low end
tO
TP201
(H) &
speaker terminals
TP202
(G)
109.0 MHz
High end
Connect
FM SG
Connect
VTVM
to
to TP201
(t-t) &
speaker terminals
98.0 MHz
98.0 MHz
TP202
(G)
2
Tuning
coverage
L2102
VCT-2
Max.
3
4
5
VCT-1
Max.
Tracking
<epea[ adjustments
-4-
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