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Alignment and Adjustments
4-1-1 Test Equipment
1.
AM Standard Signal Generator (S.S.G) : 400Hz, 30% MOD
2.
Oscilloscope
3.
VTVM
4.
Frequency counter
5.
Loop antenna
6.
Dummy load (4½)
7.
DC voltmeter
4-1-2 Pre-Adjustment
1.
Check the source voltage.
2.
Set function and band switches to the band to be aligned.
3.
Set the equalizer, volume and balance controls to mid position.
4-1-3 AM Adjustment
Step
Item
Connection
Intermediate
Figure 4-5
frequency (IF)
1
adjustment
Figure 4-4
2
AM frequency
Connect DC
coverage
voltmeter to TCON1
3
adjustment
and GND(TP1)
4
Repeat step 2 and 3 serveral times
Figure 4-5
5
AM tracking
adjustment
_
6
Repeat step 5 and 6 several times
7
TP2
SET
TP1
Figure 4-4 AM Frequecny Coverage Adjustment
AM Signal
Test Loop
Generator
Antenna
60 cm
Figure 4-5 AM Tracking Adjustment
4-2
SSG.FREQ. FREQ. Setting
Adjust. Point
522 KHZ
522 KHZ
_
522 KHZ
_
1611 KHZ
594 KHZ
594 KHZ
1404 KHZ
1404 KHZ
DC Voltmeter
Input
VTVM
Oscilloscope
AM
Speaker
Loop Antenna
terminal
Jack
IN
OUT
SET
GND
Remark
Maximum
IT 2
output
OT 1
0.9V
9V
OCT 2
OL 1
Maximum output
Maximum output
OCT 1
Samsung Electronics
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