Samsung MAX-B550, Руководство по обслуживанию

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1-1
Samsung Electronics
1. Alignment
and Adjustments
1-1. T
uner
FM THD
Adjustment
Output
Output
28 dB(
(
dB)
60 dB
Minumum Distortion (0.4% below) (Figure 1-1)
SSG FREQ. Adjustment point (FM DET)
98 MHz
FM DETECT
OR COIL
FM Search Level
Adjustment
Adjust SVR1 so that “TUNED” of FL
T
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(10K
1
)
FM S.S.G
GND
28 dB
FM S.S.G
Output GND
Speaker T
erminal
FM Antenna T
erminal
Distortion Meter
Input
SET
Input
output
Oscilloscope
FM IN
FM Antenna
SET
20 k
1
OUTPUT
AM SSG 450KHZ
INPUT
AM ANT
IN
Speaker T
erminal
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
T
uner PCB
TESTER
MAIN PCB
VT
GND
Fig 1-4 OSC V
oltage
AM(MW) OSC
Output
1~7.0
(
V
Received FREQ. Adjustment point
522~161
1 KHz
MO
AM(MW) RF
ITEAM
594 KHz
MA
Maximum Output (Fig1-4)
LW OSC
146~290 KHz
LO
2~7.0
(
V
AM(MW) RF
150 KHz
LA
Maximum Output (Fig1-4)
SW1 OSC
2.3~7.3 MHz
LO
1~8V
(
V
SW1 RF
3.5MHz
MA
Maximum Output (Fig1-4)
SW2 OSC 9.5~26.1MHz
LO
SW2 RF
10MHz
MA
Maximum Output (Fig1-4)
1~8V
(
V
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