Alignment And Adjustments - Samsung HT-DL70D Service Manual

1. Alignment and Adjustments

1-1 Tuner
* Adjustment Location of Tuner PCB
AM(MW) RF
AM(MW) OSC
Adjustment
ITEAM Adjustment
Received FREQ.
594 KHz
522~1611 KHz
Adjustment
MO
point
Maximum
1~7.0 V
Output
Output(Fig1-4)
MAIN
VT GND
PCB
Samsung Electronics
AM(MW) RF
Adjustment
150 KHz
MA
LA
Maximum
Output(Fig1-4)
TESTER
FM THD Adjustment
SSG FREQ.
98 MHz
Adjustment
point
FM DETECTOR COIL
(FD)
60 dB
Output
Minumum Distortion (0.4% below)
(Figure 1-1)
FM Search Level Adjustment
SSG FREQ. 98 MHz
Adjustment
BEACON
point
SENSITIVITY
(SVR3) SEMI-VR(20K )
Output
28 dB( dB)
Adjust SVR1 so that "TUNED" of FLT
is lighted (Figure 1-2)
*Adjust FM S.S.G level to 28dB
AM(MW) I.F Adjustment
SSG FREQ.
450 kHz
Frequency
522 kHz
Adjustment
AA
point
Maximum output (Figure 1-3)
FM
Output
Antenna
SET
GND
Terminal
Oscilloscope
FM S.S.G
Input
Speaker
Terminal
output Input
Distortion Meter
Figure1-1 IF CENTER and THD Adjustment
28 dB FM Antenna
SET
GND
FM S.S.G FM IN
20 k
Figure1-2 FM Auto Search Level Adjustment
60cm
AM IF
AM ANT
OUTPUT
IN
Speaker Terminal
AM SSG
450KHZ
OUTPUT
INPUT
VTVM Oscilloscope
Figure1-3 AM I.F Adjustment
1-1