Alignment And Adjustments; Tuner Adjustments - Samsung MAX-L42 Service Manual

1. Alignment and Adjustments

1-1 Tuner
* Adjustment Location of SW Band
* Adjustment Location of LW Band
Samsung Electronics
FM THD Adjustment
SSG FREQ.
98 MHz
Adjustment
point
FM DETECTOR COIL
(TL3)
60 dB
Output
Minumum Distortion (0.3% below)
(Figure 1-1)
FM Search Level Adjustment
SSG FREQ. 98 MHz
Adjustment
BEACON
point
SENSITIVITY
(TSR1) SEMI-VR(5KΩ)
Output 23 dB
Adjust TSR1 so that "TUNED" of FLT
is lighted (Figure 1-2)
*Adjust FM S.S.G level to 23dB
AM(MW) I.F Adjustment
SSG FREQ.
450 kHz
Frequency 522 kHz
Adjustment
AM I.F COIL
point
(TL2)
Maximum output (Figure 1-3)
FM
Output
Antenna
SET
GND
Terminal
Oscilloscope
FM S.S.G
Input
Speaker
Terminal
output
Distortion Meter
Figure1-1 IF CENTER and THD Adjustment
FM Antenna
23 dB
SET
GND
FM IN
FM S.S.G
5 kΩ
Figure1-2 FM Auto Search Level Adjustment
60cm
TL2
AM ANT
OUTPUT
IN
Speaker Terminal
AM SSG
450KHZ
OUTPUT
INPUT
VTVM Oscilloscope
Figure1-3 AM I.F Adjustment
Input
1-1