SAMSUNG HT-KD500 Service Manual Alignment & Adjustment

1-1Samsung Electronics

1. Alignment and Adjustments

1.Tuner

FM THD Adjustment

Output

Output

28 dB(±2dB)

60 dB

Minumum Distortion (0.4% below)
(Figure 1-1)

SSG FREQ.
Adjustment

point
(FM DET)

98 MHz

FM DETECTOR COIL

FM Search Level Adjustment

Adjust SVR1 so that “TUNED” of FLT is
lighted (Figure 1-2)

Figure1-2 FM Auto Search Level Adjustment

*Adjust FM S.S.G level to 28dB

Figure1-1 IF CENTER and THD Adjustment

SSG FREQ.
Adjustment

point

(SVR1)

98 MHz

BEACON
SENSITIVITY
SEMI-VR(20KΩ)

FM S.S. G

GND

28 dB

FM S.S. G

Output
GND

Speaker
Terminal

FM
Antenna
Terminal

Distortion Meter

Input

SET

Input

output

Oscilloscope

FM IN

FM Antenna

SET

10 kΩ

OUTPUT

AM SSG
450KHZ

INPUT

AM ANT
IN

Speaker Terminal

60cm

AM IF

VTVM Oscilloscope

AM(MW) I.F Adjustment

Maximum output (Figure 1-3)

SSG FREQ.
Frequency
Adjustment

point

450 kHz
522 kHz

AM IF

Figure1-3 AM I.F Adjustment

OUTPUT

* Adjustment Location of Tuner PCB

Fig 1-4 OSC Voltage

AM(MW) OSC
Adjustment

Output

1~7.0±0.5V

Received FREQ.
Adjustment

point

522~1611 KHz

MO

AM(MW) RF
Adjustment

ITEAM

594 KHz

MA

Maximum
Output(Fig1-4)

LW OSC
Adjustment

146~290 KHz

LO

2~7.0±0.5V

LW RF
Adjustment

150 KHz

LA

Maximum
Output(Fig1-4)