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TUNERADJUSTMENTS
Use a plastic screw driver for adjustments.
Adjust the intermediate
frequency
pf AM and FM to the frequency
of ceramic
filter.
Set of unit
Supply voltage
:DC12V
Speaker
:4 ohms
Standard
output
:50
mW (450 mV)
Function switch
: RADIO
PARTS
LOCATION
—
BAND
L1OO5
FUNCTION
'"'
~
'w
[—'
L1OO4 @
VC
L1OO3
L1002~
m
PATTERN SIDE
.. . . . . . . . . . . . . . . . . . . . ..-(
J9
,----------
. . . . . . . . . . . . .
I
I ADJUSTMENT
Band switch : AM
Adjusting
Connection
I
SG
I Position
of 1 Adiust-
1
VTVM
I
Circuit
Input
Closed the out~ut
1.
A
F
Ster
1
output
Frequency
tuning
dial
ment
"
Oscilloscope
Connect
sweep
generator
to
460 kHz
Low
T1 002
IC1OO1 @(H)
and
A
Connect VTVM
to
515 kHz
Low end
L1OO4
Max.
speaker
terminals.
1640 kHz
High end
TOl
Connect VTVM
to
600 kHz
~
600 kHz
J
L1 005
Max.
IF
Tuning
terminal
by sweep
generator,
it place
to L1OO5.
Connect AM SG to
2
3
coverge
TEST
LOOP.
L
4
Tracking
Connect AM SG to
5
TEST
LOOP,
6
Repeat
adjustments.
I
ADJUSTI
Adjusting
Circuit
SNT
Band switch : FM
FM Dummy an
Position
of
tuning
dial
ma: 75 ohn
Adjust-
ment
unbalance
VTVM
Oscilloscope
Iection
SG
Frequency
Input
Connect
sweep
b
genera
r to
IC1OO1 23 (H)
and VC LUG.
Connect
FM SG to
output
Connect
sweep
b
genera
r to
ICIOOI
16 (H)
b
lCIOO;n
4 (E).
Connect VTVM
to
IF
(V-curve
&
S-curve)
TI 003
10.7MHZ
Low
TIOO1
Tuning
coverge
Tracking
L1 003
TC3
L1 002
TC2
Low end
High end
90.OMHZ
106.OMHZ
Max.
Max.
9 (H)&
VC LUG (El
Connect
FM SG to
speaker
terminals.
Connect VTVM
to
9 (H)&
VC LUG (El
speaker
terminals.
Repeat
adjustments.
-4-
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