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TUNER
ADJUSTMENTS
a. PARTS
LOCATION
~27w J2706
x
–1
U204
@
CT211
L2106
I-I
u
Q
IC2116
102118
.—
12002
If/'
,"
n
,?7
II
L9rm
51b :
II
II
q%?
u
u
u
b. AM Adjustment
SG Modulation
:1 kHz. 30%
Connections
Adjusting
Circuit
SG
Position
of
Frequency
tuning
dial
VTVM
Oscilloscope
Adjustment
Input
I
output
Closed the
output
terminal
by sweep
Connect
sweep
generator,
it place
generator
toC2118
to L2106
(H) & J2706
(E)
IF
450 kHz
I
Low
XF215
I
520 kHz
Low end
IJ?205
Tuning
coverage
Connect AM SG to
Connect VTVM to
test loop
speaker terminals
—
3
=-i-+=
—
4
L2204
Connect
AM SG to
Connect VTVM to
test loop
speaker terminals
Tracking
Max.
5
1400 kHz
]
1400 kHz
CT211
Antenna
: 75t2 unbalanced
, Modulation
:1 kHz
Dev.
:
22.5kHz(Mono)
*22.5KHz(Stereo)
*6.75
KHz(Pilot
c. FM Adjustment
1
I
Connections
I
step
Adjusting
Circuit
SG
Frequency
Position
of
I
Adjustment
VTVM
tuning
dial
Oscilloscope
output
Connect
sweep
generator
toC2116
(H) & J2706
(E)
Input
Connect sweep
generator to
XF201@ (H)&
XF201O
(E)
Connect FM SG to
XF201O (H)&
XF201@ (E)
Connect FM SG to
XF201O (H)&
XF201O
(E)
H--
1
IF
2
Tuning
3
coverage
10.7 MHz
87.9 MHz
107.9 MHz
Low end
I
I
1.75to.5
v
Connect VTVM to
speaker terminals
High end
I
MO02
I
5.0*0.1
v
H
4
Tracking
5
90.1 MHz
106.1 MHz
=--t+
'ax
Connect VTVM to
speaker terminals
-2-
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