Alignment And Adjustments; Tuner - Samsung RCD-M70 Service Manual

1. Alignment and Adjustments

1-1 Tuner

Samsung Electronics
FM THD Adjustment
SSG FREQ.
98 MHz
Adjustment
point
FM DETECTOR COIL
(IT1)
Minimum Distortion (Figure 1-1)
FM Search Level Adjustment
SSG FREQ. 98 MHz
Adjustment
BEACON
point
SENSITIVITY
(ISVR2) SEMI-VR(50KΩ)
Adjust ISVR2 so that "TUNED" of LCD
is lighted (Figure 1-2)
FM Stereo Adjustment
SSG FREQ.
98MHz
Frequency
98MHz
Adjustment
SEMI-VR(5KΩ)
point
(ISVR1)
L-CH/R-CH : Maximum(Figure 1-3)
FM
Output
Antenna SET
GND Input
Terminal
Oscilloscope
FM SSG
Speaker
FREQ:1KHz
Terminal
MOD : 40KHz DEV
output
Distortion Meter
Figure1-1 IF CENTER and THD Adjustment
FM Antenna
26 dB
SET
GND
FM SSG
FM IN
Figure1-2 FM Auto Search Level Adjustment
FM antenna
EXT
75Ω
FM
SET
GND
Dummy
SSG
Speaker
Terminal
OUT
5KΩ
Stereo
Modulator
(Pilot 10%)
Figure1-3 FM Stereo Separation Adjustment
Input
50 kΩ
Oscilloscope
VTVM
1-1