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1. Alignment and Adjustments
1-1. Tuner
* Adjustment Location of Tuner PCB
LW
AM(MW)
AM(MW)
OSC
OSC
RF
ITEAM
Received FREQ.
522~1611 KHz
594 KHz
146~290 KHz
Adjustment
MO
MA
point
Maximum
Output
Output
2~7.0±0.5V
1~7.0±0.5V
(Fig1-4)
MAIN
VT
PCB
Fig 1-4 OSC Voltage
Samsung Electronics
AM(MW)
SW1
SW2
SW1
RF
RF
OSC
OSC
150 KHz
3.5MHz
9.5~26.1MHz
2.3~7.3 MHz
LO
LA
MA
LO
Maximum
Maximum
Output
Output
1~8V±1V
1~8V±1V
(Fig1-4)
(Fig1-4)
GND
TESTER
FM THD Adjustment
SSG FREQ.
Adjustment
point
FM DETECTOR COIL
(FM DET)
60 dB
Output
Minumum Distortion (0.4% below)
(Figure 1-1)
FM Search Level Adjustment
SSG FREQ.
Adjustment
BEACON
point
SENSITIVITY
(SVR1)
SEMI-VR(10K½)
Output
28 dB(±2dB)
Adjust SVR1 so that "TUNED" of FLT is
lighted (Figure 1-2)
SW2
*Adjust FM S.S.G level to 28dB
RF
10MHz
MA
LO
Maximum
AM(MW) I.F Adjustment
Output
(Fig1-4)
SSG FREQ.
Frequency
Adjustment
point
Maximum output (Figure 1-3)
FM
Output
Antenna
GND
Terminal
98 MHz
FM S.S.G
Speaker
Terminal
Figure1-1 IF CENTER and THD Adjustment
28 dB
98 MHz
GND
FM S.S.G
Figure1-2 FM Auto Search Level Adjustment
450 kHz
522 kHz
OUTPUT
AM IF
AM SSG
450KHZ
INPUT
Figure1-3 AM I.F Adjustment
SET
Oscilloscope
Input
output
Input
Distortion Meter
FM Antenna
SET
FM IN
20 k½
60cm
AM IF
AM ANT
IN
Speaker Terminal
OUTPUT
VTVM
Oscilloscope
1-1
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