Tuner Alignment And Adjustments - Samsung MAX-910 Service Manual

1. Alignment and Adjustments
1-1 Tuner
Fig1-1. Adjustment location of Tuner Part
* When adjusting T.H.D., readjust I/F coil on the Tuner Pack.
FM THD Adjustment
SSG FREQ.
98 MHz
Adjustment
point
FM DETECTOR COIL
(TL3)
60 dB
Output
Minumum Distortion (0.3% below)
(Figure 1-2)
Samsung Electronics
FM
Output
Antenna SET
GND
Terminal
Oscilloscope
FM SSG
Speaker
Terminal output
Input
Distortion Meter
Figure1-2 IF CENTER and THD Adjustment
FM Search Level Adjustment
SSG FREQ. 98 MHz
Adjustment
BEACON
point
SENSITIVITY
(TSR1) SEMI-VR(10KΩ)
Output 1kHz 28dB
Adjust IVR1 so that "TUNED" of FLT is
lighted (Figure 1-3)
4Gain : 20dB(CE standard)
AM(MW) I.F Adjustment
SSG FREQ.
450 kHz
Frequency
522 kHz
Adjustment
AM I.F COIL
point
(TL2)
Maximum output (Figure 1-4)
Speaker
Terminal Frequency Counter
Figure 1-5
Input
Recording /Play head
AZIMUTH control
Figure 1-7
28 dB FM Antenna
FM IN
GND
FM SSG
TSR1
10KHz
Figure1-3 FM Auto Search Level Adjustment
60cm
OUTPUT
AM SSG
450KHZ
INPUT
VTVM
Figure1-4 AM I.F Adjustment
Cassette Deck
SPEAKER
SET
output
(GND)
Figure 1-6
SET
TL2
AM ANT
IN
Speaker Terminal
OUTPUT
Oscilloscope
Oscilloscope
VTVM
V H
In Out
1-1