Alignment and Adjustments
1-1-1 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 (3Ω)
7. DC voltmeter
1-1-2 Pre-Adjustment
1. Check the source voltage
2. Press TUNER/BAND to select the AM(MW) function.
3. Set the EQ/S.BASS control to OFF position.
4. Set the volume control to approximaterly 50mw
1-1-3 AM Adjustment
Item
Connection
Step
Intermediate
1
frequency (IF)
Figure 1-5
adjustment
Figure 1-4
AM frequency
2
coverage
Connect DC voltmeter to AM
adjustment
VT(OR10) and GND
3
4
Figure 1-5
AM tracking
adjustment
5
-
AM Signal
Generator
Test Loop
Antenna
1-2
SSG.FREQ.
FREQ. Setting Adjust. Point
450 KHz
IT 2
522 KHz
522 KHz
OT 1
-
1611KHz
-
OCT2
594 KHz
594 KHz
MW-ANT
-
-
-
AM VT(OR10)
SET
Input
GND
DC Voltmeter
Figure 1-4
VTVM
Speaker
AM-ANT
Terminal
IN
SET
60 cm
GND
)
Ω
Dummy Load(3
Figure 1-5
1-1-4 MW/LW
Step
Item
Intermediate
1
frequency (IF)
adjustment
MW frequency
2
coverage
adjustment
3
4
MW tracking
adjustment
5
6
Remark
LW frequency
coverage
adjustment
7
Maximum output
8
1.0V
LW tracking
adjustment
4.6V
9
Maximum output
Non Adjust
Oscilloscope
OUT
FREQ. Setting Adjust.
Connection
SSG.FREQ.
Fig 1-5
450 KHz
522 KHz
522 KHz
-
Fig 1-4
1611 KHz
-
594 KHz
594 KHz
Fig 1-5
-
1404 KHz
-
144 KHz
Fig 1-4
-
290 KHz
170 KHz
170KHz
Fig 1-5
-
270KHz
Remark
Point
IT2
Maximum output
OT1
1.0V(LOW)
OCT2
4.6V(HIGH)
MW ANT
Maximum output
COIL
-
NON Adjust
OT2
0.7V(LOW)
3.1V(HIGH)
OCT4
LW ANT
Maximum output
COIL
-
NON Adjust
Samsung Electronics