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Vil. ELECTRICAL
ADJUSTMENT
AT-S61/L/J
APRROX
600mm
AM
S.S.G
©
OUTPUT
TEST
LOOP
ANTENNA
SET
AC VOLTMETER
Lch OR
Rech
O
OUTPUT
Fig. 12 Instrument Connections for AM Section Adjustment
ADJUSTMENT
ADJUSTMENT
STEP
ITEM
POINT
RESULT
REMARKS
Clock
Connect a Frequency Counter between
1
F
: a
T14 (BLK)
420 kHz
C109
(IC9 Pin 28) and GND
on the
iced
Tuner P.C Board.
1
:
BAND switch to FM.
>
PLL
VC3
in hese oe
Connect a Frequency Counter between
Frequency
g
Frequency |
OUT and GND on the FRONT
+10.7 MHz
END.
BAND switch to AM (MW).
Short TP7 to GND and connect
a Fre-
S
a
a
AAOKRED)
HOE
quency Counter between TP6 and GND
on the Tuner P.C Board.
OP. AMP.
BAND switch to AM (MW).
4
DC Level
VR4
4.80V
Connect
a DC Voltmeter between TP3
and GND on the Tuner P.C Board.
?
|
T12 (YLW)
.
1,000 kHz (1,008 kHz), 50 dB,4.00 Hz
5
AM IF Coil
T13 (BLK)
Maximum Output
(30%) input.
Maximum Output
Low Range
'
:
600 kHz (603 kHz), 55 dB, 400 Hz
6
eeree
T8
Distortion Factor:
(30%)
input
¢
il
Less than 10%
oe
.
Maximum Output
7
oe
vcl
Distortion Factor:
oon ' cat
kHz), 2/48 A700 te
y
Less than 10%
i
8
Readjust in Steps 6 and 7.
17
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