Samsung MM-18 - Page 14

4-2 Samsung Electronics
4-1-1 Test Equipment
4-1-2 Pre-Adjustment
4-1-3 AM Adjustment
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
1. Check the source voltage
2. Press TUNER/BAND to select the AM(MW) function.
3. Set the volume control to mid position.
Intermediate
frequency (IF)
adjustment
AM frequency
coverage
adjustment
AM tracking
adjustment
Figure 4-4
Connect DC
voltmeter to AM VT
and GND(OKV1)
1
2
4
5
3
Figure 4-5
Figure 4-5
450 KHz
594 KHz
Figure 4-4
SET
60 cm
AM Signal
Generator
Test Loop
Antenna
Speaker
Terminal
VTVM
IN
OUT
GND
Oscilloscope
AM
Loop
Antenna Jack
Figure 4-5
SET
AM VT(OR1)
OKV1 GND
Input
DC Voltmeter
594 KHz
OL 1
-
-- -
-
-
-
-
522 KHz
522 KHz
IT 2
OT 1
0.9V
Maximum output
Maximum output
Non Adjust
Non Adjust
Remark
FREQ. Setting
Adjust. PointSSG.FREQ.Item
Step
Connection
Alignment and Adjustments
mm18(5) 3/23/98 3:03 PM Page 2