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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 : DC 12V
Output road: Speaker Terminal (8 ohms)
Standard output (Volume control) :50 mW (630 mV) - at the Speaker Terminal
Function switch : RADIO
PARTS LOCATION
1.
AM
ADJUSTFI
P
k
1
IF
2
Tuning
3
cover e
I
4
]
Tracking
TAPE - RADIO - CD
AM -FM
NT
.
Cor
lnDut
Closed the output
terminal by sweep
generator, it place
to VC1 (HOT).
Connect AM SG to
TEST LOOP.
Connect AM SG to
TEST LOOP.
md select switch : AM
?ction
SG
Position
of
Adjust-
VTVM
output
Frequency
tuning
dial
ment
Oscilloscope
Connect sweep
generator to
460 kHz
Low
L7
See Fig.1
ICI Pin 16(H) and
For Maximum
Ground(E).
Connect VTVM to
515 kHz
Low end
L5
Max.
speaker terminals.
1650 kHz
High end
TC4
Connect VTVM to
600 kHz
600 kHz
L1
Max.
speaker terminals.
I 1400
k Hz
I
1400 kHz
I
TC1
I
5
6
Repeat adjustments.
Set the internal modulation of signal generator to 30% 400Hz.
2. FM ADJUSTR
w
1
IF
(S curve)
EP
2
Tuning
3
cover e
4
Tracking
tibimm
Set th~ internal mof
ENT
Band select switch : FM
FM Dummy antenna :75 ohms unbalance
Connection
SG
Position
of
Adjust-
VTVM
Input
output
Frequency
tuning
dial
ment
Oscilloscope
Connect sweep
Connect sweep
generator to
generator to
10.7 MHz
Low
L8
See Fig.2
IC1 pin 23(H)
iCl Pin 16(H)
For Symmetric
and Ground(E).
and Ground(E).
Connect FM SG to the
Connect VTVM
to
87.0 MHz
Low end
L4
Max.
Upper & same position.
speaker terminals.
109.0 MHz
High end
TC3
Connect FM SG to the
Connect VIVM
to
90.0 MHz
90.0 MHz
L3
Max.
Upper & same position.
speaker terminals.
106.OMHZ
106.0 MHz
TC2
ulation of signal generator to 400Hz Dev. 22.5kHz.
.,
-3-
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