Technics ST-GT1000, Руководство по обслуживанию

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A
1
2
3 4
5
6 A
Ca
A
AM ANT AM OSC
1
2
3 4
5
6
Z101
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
XI
N
CE
DI CL
DO AM LW
SDC
STRQ
FM
IF
IN
MONO
AM
IN
FM
IN
V
DD
PD
AI
N
A
OUT
Vss
X
OUT
Z120 FM FRONT END (RAL0035)
L102
0.68 H
L101
0.68
H
R110
1K
C107
0.047
R1
12
100K
C108
8.2P
C136
1000P
A
B
C
D
L103
0.47 H
R111
390
R128
82
R129
27K
C124
100P C112
0.01
R1
15
560
R116
1K
C
111
25V4.7
D101
MA4051MT
A
R1
13
10K
C133
27P C134
27P
X103
(7.2MHz)
R1
17
68K
C130
6.3V100
C132
1000P
C1
13
1000P
R132
10K
R133
1K
R138
3.3K
R130
10K
R137
1K
R136
1K
R135
1K
R134
470
A B C D
C125
16V22
R114
5.6K
C1
10
0.01
A
B
C
D
E
F
IC102
LC72131MDTLM
PLL FREQUENCY
SYNTHESIZER
AM ANT
EXT
LOOP
FM ANT
(75 )
JK101
SCHEMATIC DIAGRAM 1
TUNER CIRCUIT
R103
100
C101
0.01
C102
16V100
2
3
4
5
6
7
8
2SC2996
BUFFER AMP
2SC2996
BUFFER AMP
2SK360
FM OSC
2SK238
RF AMP
1
22P
15P
1P
18P
0.47
H
8P
100K
0.022
2.7K
47P
3P
33K
100K
8P
8P
10K
10K
22
33K 33K
100K
8P
0.022
100
330
7P 4P
22P
1P
4P
220P
1.5M
10K
1
H
220
0.022
0.022
150
2P
18P
1.2K
33P
470K
16V100
15P
330
2SC2620
FM MIXER
Note: The number which noted at the connectors on the schematic diagram as "SCHEMATIC DIAGRAM 1" or "SCHEMATIC DIAGRAM 2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
FM/AM
F=7.2MHz
2.3V
P P
FM/AM
F=7.2MHz
1.9V
P P
2.6V
(4.8V)
1.7V 0.9V 0.9V 5.2V 2.5V 0V 4.5V 0V
(0V) (2.5V) (0V)
2.6V 0V 0V 0V 5.2V 4.1V 3.7V 0V 0V
(14.8V)
(4.2V) (0.2V)
:POSITIVE VOLTAGE LINE
:FM SIGNAL LINE
:FM OSC SIGNAL LINE
:AM SIGNAL LINE
:AM OSC SIGNAL LINE
F
87.5MHz 108MHz
8.2V
FM
V
1.6V
F
522kHz 1629kHz
1.1V
5.3V
V
AM