SAMSUNG Mm-16 Alignment and Adjustments
4. Alignment and Adjustments
4-1 Tuner
FM T.H.D Adjustment
SSG FREQ. 98MHz
Adjustment
point FM DETECTOR COIL
(IT1)
Minumum output(Figure 4-1)
FM Search Level Adjustment
SSG FREQ. 98MHz
Adjustment
point SEMI-VR(50KB)
(ISVR1)
"TUNED" is shown on LCD(Figure 4-2)
FM
Antenna
Terminal
Speaker
Terminal
Input
Input
Figure 4-1 IF CENTER and T.H.D Adjustment
Figure 4-2 FM Auto Search Level Adjustment
Output
Distortion Meter
Oscilloscope
Oscilloscope
FM antenna
FM SSG
FM SSG
GND
26dB
75Ω
Dummy
75Ω
Dummy
FM IN
FM Antenna
SET
50 kB
SET
Output
GND
FM Stereo Adjustment
SSG FREQ. 98MHz
Adjustment
point SEMI-VR(5KB)
(ISVR2)
L-CH/R-CH : Maximum(Figure 4-3)
Figure 4-3 FM Stereo Separation Adjustment
EXT
FM
SSG
Stereo
Modulator
(Pilot 10%)
Speaker
terminal
SET
GND
OUT
VTVM
5KB
4-1Samsung Electronics
Samsung Electronics4-2
Step
Item
Connection SSG.FREQ.
FREQ. Setting
Adjust. Point
Remark
Maximum
output
Maximum output
Maximum output
1
Intermediate
frequency (IF)
adjustment
AM frequency
coverage
adjustment
Figure 4-5
Figure 4-4
Connect DC
voltmeter to TCON1
and GND(TP1)
522 KHZ
522 KHZ IT 2
OT 1
OCT 2
OL 1
OCT 1
9V
0.9V
522 KHZ
594 KHZ
1404 KHZ
1611 KHZ
594 KHZ
1404 KHZ
Figure 4-5
_
_
_
Repeat step 2 and 3 serveral times
Repeat step 5 and 6 several times
AM tracking
adjustment
Figure 4-4 AM Frequecny Coverage Adjustment
Figure 4-5 AM Tracking Adjustment
SET
TP2
DC Voltmeter
Input
TP1
AM Signal
Generator
Test Loop
Antenna
AM
Loop Antenna
Jack
Speaker
terminal
GND
Oscilloscope
VTVM
IN
OUT
SET
60 cm
Alignment and Adjustments
2
3
4
5
6
7
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
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