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STHD-301
Schematic
11 pgs979.51 Kb0

Technics STHD-301 Schematic

SCHEMATICDIAGRAM 1
TUNER CIRCUIT
A
JK101
FM ANT (75ohm)
AM ANT
EXT
LOOP
L101
0.68uH
0.01
C110
Z120 FM FRONT END (RAL0035)
22P
1
2 3 4 5
R110
F=7.2MHz
F=7.2MHz
1K
FM/AM
FM/AM
15P
0.47uH
C136
R114
5.6K
1P
18P
100K
0.022
L102
0.68uH
6A
5
AM ANT AM OSC
1000P
1.9V P
P
2.1V P P
2.7K47P
8P
33K
C134
1
2
34
27P
:POSITIVE VOLTAGE LINE
2SK238
RF AMP
8P
100K
C107
0.047
(7.2MHz)
Ca
22
7P
33K
0.022
100
2SK360
FM OSC
8P
3P
A
R112
X103
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9 10
R138
10K
R130
10K
100K
6
5
8.2P
C108
100K
R113
27P
C112
C133
0.01
2.6V
Vss
X OUT
XIN
CE
2.6V 0V 0V 0V 1.2V 3.7V 3.7V 0V 0V
330
8P
10K 10K
A
1
2
34
10K
(3.8V)
2.9V 0.9V 0.9V 5.2V 2.5V 0V 4.1V 0V
A OUT
DI
C111
R115
25V4.7 560
AIN
CL
R116
1K
C125
B
C
D
16V22
D101
MA4051MTA
PD
IC102 LC72131MDTLM
PLL FREQUENCY SYNTHESIZER
DO
33K
2SC2996
BUFFER AMP
33P
1.2K
VDD
AM
4P
:FM SIGNAL LINE :FM OSC SIGNAL LINE
2SC2620
FM MIXER
4P
1P
22P
1uH
220P
220
0.022 16V100
470K
2P
2SC2996
18P
BUFFER AMP
L103
0.47uH
C113
C132
C130
1000P
1000P
(0V) (2.5V) (0V)
FM IN
AM IN
MONO
SDC
STRQ
LW
R133
1K
1.5M
330
6.3V100
FM IF IN
(14.8V)(4.2V)(0V)
R132
:AM SIGNAL LINE :AM OSC SIGNAL LINE
10K
150
0.022
15P
8
R111
390
R128
82
68K
R117
R129
27K
C124 100P
10K
7
R103
0.01
C102
100
16V100
6
C101
A
B
C
D
E
F
V
FM
8.1V
1.6V
87.5MHz 108MHz
V
AM
4.6V
0.9V
F
522kHz 1629kHz
R1371KR1361KR1351KR134
ABCD
F
1K
SCHEMATICDIAGRAM 2
:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE :AM OSC SIGNAL LINE
+B
FM LINE
A D
R118
B C
R104
10K
C103
CF201
13
2
IC101 LA1833MN
FM/AM IF AMP, DET/AM OSC,MIX/FM MPX
C114
C109
50V3.3
3.3K
(4.2V)
3.7V
24 23 22 21 20 19 18 17 16 15 14 13
OSC OUT
R109
330
0.01
R105
470
C104
1000P
R106 470K
(0V) 12V
(0V)
0.7V
Q101 2SC2787LTA
FM IF AMP
22K
R143
C116
0.033
330
R107
C105
1000P
R108 470K
(0V)
0.7V
Q102 2SC2787LTA
FM IF AMP
C120
16V10
22K
R121
(0V) 12V
C138
TLM
C139
4700P
C119 390P
4.7K
R102
1000P
C115 25V4.7
R120 47K
(5.7V)
2.2V 2.2V 1.7V 2.1V 2.1V 2.1V 1.9V 1.9V
5.2V
AFC
OSC
AM RF IN
AGC
(2.1V)0V(0.3V)
AM OUT
FM
3.2V
DET OUT
0.12V P P
R123
C131 100P
MPX IN
PILOT IN
CF202
13
2
0.01
68K
C137 4700P
Lch
Rch
PILOT OUT
Q106 UN4111TA
POWER SUPPLY (FM:ON)
(0V)
14.7V
10K
0V (14.8V)
10K
14.8V
C118
C117
0.018
0.018
C142 50V1
C141 50V1
R142
1K
R141
1K
R146
R145
100K
100K
C144
C143
14.8V
B
4700P
A
4700P
FM IF IN
1 2 3 4 5 6 7 8 9 10 11 12
2.1V
C127
C129
6.3V100
16V22
1 2 3
10K
R119
REG
AM MIX OUT
2.1V 2.1V 0V 0V
5.2V (5.7V)
C126
0.047
1
4
6
3
2
C106
0.01
GND
AM IF IN
0.01
C148
R126
ST
SD
0V (4.7V)
1.5K
1.5K
R125
AB
R124
X102
C147
FM DET
270
1000P
3.4V (4.1V)
C149
STRQ
Vcc
5.2V (5.7V)
470
R127
0.1
MONO
FM/AM
3.7V
3.9V
(1.1V)
(3.5V)
50V1
C122
C121
50V0.47
50V1
E
C123
CB
DA
DI
CL
DO
Lch OUT
R131
68
CE
BADFCE
1234567
DET
Rch OUT
2.7K
R122
To CONNECTOR CIRCUIT (CN102A) on SCHEMATIC DIAGURAM-4
R139
3.3K
R140
CN102B
Q110
(1.9V) 3V
2SC3311ARSTA
SWITCHING
7.3V1.6V
(1V)
7.3V
4.7K
A B
To CONNECTOR CIRCUIT (CN101A) on SCHEMATIC DIAGURAM-4
AB
SD
NC
+B(2)
STEYE
E
CN101B
1234567
VT
+B(1)
T.GND
SCHEMATICDIAGRAM 3
FL CIRCUIT
B
B
A
C712
C
R750 10K
:POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGELINE
FL701 (RSL0273 F)
FL DISPLAY
1 3 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 57 59
M
R782 100K
12
R783 100K R784 100K R785 100K R786 100K
APXBCDEFGHI JKLMNO WVUTSRQ ACDB
5.9V
5.9V
5.9V
22.3V
22.2V
22.2V
22.2V
22.2V
22.2V
22.2V
P50/
FLD8
P51/FLD9
P53/FLD11
P52/FLD10
P54/FLD12
P55/FLD13
P56/FLD14
P57/FLD15
P00/FLD16
P01/FLD17
4V 0V
5V
0V
T 27ms.
P94/SOUT2
P93/SIN2
P92/SSTB2
4.6V
4.1V
1.4V
24V
IC701 M30218MAA103
FL DRIVE / SYSTEM CONTROL
0V
P91/SBUSY2
P90/SRDY2
CNVSSP87/XCIN
0V
3.5V
2.2V
T 7.2ms.
T 27ms.
P97/CLKOUT
P96/DA1/SCLK22
P95/SCLK21
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
4.7V
4.5V0V4.2V
7.7V
11.2V
5.9V
P02/FLD18
P03/FLD19
5V
P86/XCOUT
/RESET
4.7V
2.4V
2.4V
3 4 5 6
ARBCDEFGHI JKLMNOPQ
11.3V
9.3V
15V
24V
18.5V
18.5V
9.4V
13.2V
22.2V
18.7V
20.4V
4.7V
0V
SS
V
VCC
P07/FLD23
T 7.2ms.
5V
0V
VCC
P85/INT5
P84/INT4
4.7V
3.8V0V4.8V
P11/FLD25
P10/FLD24
P12/FLD26
4V 0V
24V
1.4V
P
P
P83/INT3
P82/INT2
P81/INT1
0V
P13/FLD27
P14/FLD28
T 36ms.
P80/INT0
P77/TA4IN/TA2OUT/CLKS1
0V0V0V
0V
0V
P15/FLD29
P16/FLD30
P17/FLD31
P76/TA3IN/TA1OUT/CLK1
P75/TA2IN/TA0OUT/RXD1
P74/TA1IN/YA4OUT/TXD1
0V
P04/FLD20
P05/FLD21
P06/FLD22
T
27ms.
F=10MHz
VSS
XOUT
XIN
0V
4.7V
2.2V
16.6V
13.1V
9.5V
P20/FLD32
P21/FLD33
5V
0V
P73/TA0IN/TA3OUT
P72/TB2IN
0V
0V
11.2V
515253545556575859606162636465666768697071727374757677787980
P23/
FLD35
FLD36
P22/FLD34
P25/FLD37 P26/FLD38 P27/FLD39 P30/FLD40 P31/FLD41 P32/FLD42 P33/FLD43 P34/FLD44 P35/FLD45 P36/FLD46 P37/FLD47 P40/FLD48 P41/FLD49 P42/FLD50 P43/FLD51
P44/TXD0
P45/RXD0
P46/CXL0
CST0 RST0
P71/TB1IN
P70/TB0IN
0V
R723 1K R722 1K
P24/
P47/
0.1
R746 10K
R738 100
LK IJ
R747 10K
C782
50V1
C713
R748 10K
50V10
R749 10K
C706
0.1
R734
100K
4.9V
22.2V
22.2V
100
R733
R739 1K R740 1K R741 1K
R742 1K
0.1
C711
A AXBCDEFGHI JKL NOPQRSTUVWBCDEF
Q702 2SD1819ATX
FL DRIVE
A F E D C B
C715 0.1
C717 0.01
C718 0.01
C716 0.1
R751
10K
24.6V
4.7V
22.2V
22.2V
22.2V
22.2V
22.2V
22.2V
22.2V
24.6V
4.9V
4.9V
1.1V
4.9V
4.8V
0V 0V 0V 0V 0V
0V
L701
82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
P67/FLD7 P66/FLD6 P65/FLD5 P64/FLD4 P63/FLD3 P62/FLD2 P61/FLD1 P60/FLD0 VEE P107/AN7 P106/AN6 P105/AN5 P104/AN4 P103/AN3 P102/AN2 P101/AN1 AV
SS
P100/AN0 VREF
CC
AV
50V1
C781
R781 100K
0V
0.3V 0V
0.6V 0V 0V
20.3V
16.7V
22.3V
14.7V
9.2V
20.3V
18.5V
20.2V
14.8V 13V
9.4V
5.6V
9.4V 15V
F G
12
E F G H
I J K L M N O P Q R
R727 330 R726 330 R725 100 R724 1K
D711
MA111TX
3 4 5 6 7 8 9
10
5081 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31
AB
C792
6.3V100
R710
1K
C710
0.01
6.3V1000
C707
R752 1K
R753 1K
R754 1K
R755 1K
R756 1K
R757 1K
HAGFEDCB
18P
C702
R758 100
R759 100
X702
(32.7KHz)
C703
R702 10K
20P
R704 0ohm
13
2
4.8V
4.9V
X701
(10MHz)
Q701
D705
R703
MA111TX
100K
4.7V
C705 0.1
0V
820K
R708
R701 1K
C709
16V10
10K
47K
UN5214TX
RESET
0V
D701
50V2.2
D701 MA111TX
C704
SCHEMATICDIAGRAM 4
OPERATION CIRCUIT
C
(AM)
CAB
S601
R601
6.8K
S602
(FM)
R602
4.7K
S603
(AUTO/MONO)
R603
3.3K
S604
(TUNE MODE)
R605
R604
1.8K
2.2K
()
S605
TUNE/
TIME ADJUST
()
S606
R606
1.5K
S607
(SET)
R607
1.2K
DEMO)
S608 (CLOCK/
TIMER/
R6081KR609
820
S609
L
( REC)
CN703B
(REMOTE SENSOR)
S610
L
( PLAY)
IN/OUT TERMINAL
D
CIRCUIT
C202
C201
R206
1K
R205
1K
100P
100P
R202
1K
R201
1K
R208
R207
100K
100K
C206
C205
R204
R203
100P
100P
100K
100K
C209
1000P
C204
C203
100P
100P
CN105B
7 6 5 4 3 2 1
JK201
Rch
VGO 2 13
OUT
Lch
EXT/MD
JK201
Rch
0.01
C601
IN
12345
Lch
ACB
1K
R729
10K
R730
R728
1K
R721
15K
A B C D E
4.9V
D706
1SS380TE
CN703A
12345
A B
:POSITIVE VOLTAGE LINE :NEGATIVEVOLTAGE LINE :FM SIGNAL LINE :AM SIGNAL LINE
A B C D E F G
CN701B
1 2 3 4 5 6 7 8
9 10 11 12 13 14
L702
C
L703
B
L704
A
L707
17
R760
1K
L706
R709
1K
17
D703
1SS380TE
C708
0.01
17
D704
1SS380TE
R706
1K
A B C D E F G H
I J
K
L
CN702B
CONNECTOR
E
CIRCUIT
CN102A
7
Lch IN
Rch IN
DET
+B(2)
STEYE
+B(1)
T.GND
CL
6
DO
5
DI
4 3
CE
2 1
CN101A 7 6
SD
5
NC
4 3
VT
2 1
C471
0.047
14.8V
A
To TUNER CIRCUIT
1 2 3 4 5 6 7 8
9 10 11
12 13 14
(CN102B) on SCHEMATIC DIAGURAM-2
A
To TUNER CIRCUIT (CN101B) on SCHEMATIC DIAGURAM-2
7.3V
C472
0.047
CN103B
CN104B
7 6 5 4 3 2 1
7 6 5 4 3 2 1
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