Samsung MM-J5, Service Manual

1-1

Samsung Electronics

1. Alignment and Adjustments

1-1. 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

FD

FM Search Level Adjustment

Adjust SVR1 so that “TUNED” of  LCD 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

SVR1 (10KΩ)

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

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

AA

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)