Skyworth 3S28 Schematic
HOUDA CTV5 Schmatic For 21' Inch
..电阻电容电感的表示方法：
1.K=1,000Ω , M=1,000,000Ω电阻单位为欧姆，。
2.1uF除另行注明外，所有小于的电容量，单位为；
3. uH除另行注明外，所有电感量，单位为（微亨）。
4.50V除另行注明外，所有电容耐压值均为。
1pF大于的电容量，单位为。
表示对安全特别重要的元器件。
MAIN BOARD
NO:
0502-21NI00-01
TUNER TUNER-5V
AFT
R060
2.7K
C102
1u
GND
C108
Q103
1015
SW005
V+
OUT
5.1k
R006
5.1K
R005
5.1K
R004
5.1K
R003
100
VCCBHBL
1u
1015
R061
3.9K
IC003
24C08
NC
NC
9
Q101
1015
R103
R102
5.1K
R101
5.1K
R062
6.8K
IC001
ST6388
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
5.1K
P+
Q102
SW004P-SW003
BALANCE
VPS
WID
DPC
KEY IN
SCART IN
WOOFER
VHFL/BAND0
VHFH/BAND1
UHF/SUPER
MN/L1
GND
11IF10831 54 6 72
R063
15K
R105
100
R107
5.1K
R106
33K
SW002
AV
VT
VHFH
VHFL
UHF
AGC
C106
SW008
PIC
KEY
5V
REMOTE
5V
V-POS
5V
KEY
OPTION
VHFL
VHFH
UHF
M/L
8V
AGC
VT
BU
0.1u
C107
C101
1u
47u
SW006
SW007
R064
1.5K
R051
10
C306
10u
MENU
R035
3.3K
R06
10K
R024
5.1K
R121
1K
R065
1.8K
C054
0.1u
R034
22K
V-
R033
2.2K
VCC
R053
R025
100K
M/L
R116
10K
Q104
2SC1815
C111
47u
VCC
SCL
SDA
POWER
MUTE
REMOTE
RESET
XTAL OUT
XTAL IN
GND
OSD OSC OUT
OSD OSC IN
V.SYNC
H.SYNC
BLANK
BLUE
GREEN
REDVSS
VT
SPEAK
L
C462
2200P
R411
1K
TO AUDIO AMP
8V
R203
33
D101
5.1V
C003
47u
C012 150P
R039
33343536373839404142
12K
4148
4148
2223242526272829303132
4148
4148
22P
X001
8M
C006
22P
L001
39uH
D005
D004
D003
D002
L101
31.5M
C007
C004
27P
XP402
18V
R104
10K
R018
R037
3.3K
C104
0.01u
5.1K
Q001
C005
27P
R013
10
R014
5.1K
R015
5.1K
R016
5.1K
5V
R021
5.1K
C1815
470u/16V
C441
470u/25V
5V
R022
22K
C013
1u
R026
2.2K
5V
R036
10K
C457
1
2
R023
100
R054
10K
R038
33K
R002
33k
C002
0.1u
D008 4148
Q003
R042
100K
R041
1815
5.1K
Q002
D007
1815
D006
4148
MUTE
SAW101
K2972
3
SCL
SDA
ON/OFF
REMOTE
33V
R001
33K
C001
0.1u
R044
5.1K
D009
3.9V
V.SYNC
5.6v
5V
H.SYNC
OSD FB
OSD B
OSD G
OSD R
~220V 50HZ
VT
5V
D401
2.7V
C408
10u
5
4
220n/AC400V
3.15A/250V
L602
C602
L601
C601
F601
SW601
R414
47K
R448
10K
C207
1u
C459
0.1u
C456
0.1u
R461
1K
R413
100K
V2 IN
A2 IN
D451
4148
1
8
IC403
TDA1905
9
10
11
12
13
14
15
16
5 4 2
C454
1u
8V
TO AUDIO AMP
C205
C206
0.01u
100u
C452
3
47u
6
C453
2.2u
7
C455
4.7u
SDA
5V(A)
100
R229
C458
0.1u
R463
R452
3.3K
4.7
R464
220
8V
1815
Q203
R208
68
R202
560
V2 IN
A2 IN
SC
SCL
D206
4148
100
R226
4700
C214
C213
2.2u
R215
HD
V.SYNC
D205
4148
1K
8.2K
R236
R307
R227
2.2K
1K
15K
R234
8V
BCL
56K
R235
1
R231
0.1U
C216
R211
VIDEO OUT
1K
C215
1000u
C217
104
V OUT
V.AMP
22K
R232
C219
4700
V OUT
A OUT
A OUT
C224
0.1u
R233
L1
4.43M
18K
X202
X201
3.58M
V1 IN
R1
L1
A1 IN
C129
0.1u
R401
VI/Y IN
OSD FB
R012 1.5K
Y C
75
R402
C222
0.01u
R011
SVHS
R403
C223
1K
.01u
75
C IN
8V
OSD B
OSD G
OSD R
C221
C218
0.01u
0.01u
470
470
R008
470
R007
Ro
1K
R218
R217
SCL
FMCAP
GND D
SDA
Vcc D
AUDIOOUT
SLPF
LFB/SSC
VERT
HOUT
IC101 STV2246
Vcc1
BCL/SAF
GND1
CVBSOUT1
CLPF
XTAL2
XTAL1
ROSD
FBOSD
GOSD
XTAL3/BTUN
X1/VAMP/CHROUT
Vcc2
AGCPIFCAP
C109
1u
PIFIN1
Q201
C117
47u
1815
R206
3.9K
C209
0.1u
R207
150
L201
8.2uH
CF201
R118
150
C113
0.33u
C112
0.01u
C116 1000P
C204
1u
C114
0.01u
C229
1u
AGC
AUDIO IN
5V(A)
MONO OUT
6.5M
CF204
4.5M
38M
trf1062
Q202
1815
M/L
R204
1K
R205
3.9K
L102
Vref IF
AGCSIFCAP
SIFIN2
SIFIN1
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
C118
10u
C119
0.01u
C115
1u
PIFLC2
PIFLC1
EXTAUDIO
INTCVBSOUT
VccIF
AM/FMOUT
GND IF
IFPLL
TUNERAGCOUT
PIFIN2
3
4
C607
220n/250V
XP601
RT601
MZ72-18
DGC-HL-25
R601
4
XP602
L801
4700/1KV
D601
5
C604
4700/1KV
D602
R608
5.6K
Q601
1015
D603
D604
C605
4700/1KV
C606
4700/1KV
C609
4700P
100u/400V
D605
4148
D606
ES1
D607
4148
D609
7.5V
R607
2.7K
C611
0.015u
C608
R606
2.7K
1
2
R611
220K
R609
15K
R603
22
C610
0.1u
D608
4148
R605
1K
R604
22K
C3807
2
R612
33
Q602
Q603
ST1802HI
C612
0.015u
C613
2
R614
68
BCK-40-1N3
680P/1600V
220~ 9V~
C202
47u
IC601 PC817
T602
C680
2200P/400V
R680
8.2M/0.5W
T601
CVBSIN1
R212
1K
C201
1u
2
1
GND2
1000P/500V
D632
BYW36
D634
BA158
560P/500V
D633 BA158
C633
560P/500V
560P/500V
D635
BA158
D643
D644
IN4001*4
VIDEO2 IN
C632
C634
C635
CVBSIN2
C220
0.1u
D646
D645
BS
C203
1u
75
R213
R632
C641
220u/160V
R646
150
D638
4148
C647
470u
Y/CVBSIN3
C211
VIDEO1/Y IN
47K
0.1u
D647
R651
560
D641
4148
R655
1K
BOSD
CHR
C210
0.1u
C IN
8V
R633
22K
R636
1/1W
C643
1000u/25V
C636
470u/35V
C637
470u/25V
5.6V
Icath
APR
R214
10K
R247
1K
Q631
1815
R641
150K
1015
Q635
C648
47u
ROUT
( U IN )
NC
C228
0.01u
R242
75
4148
C212
47u
270
D208
470u
D637
6.2V
Q634
1815
Go
R221
GOUT
( Y IN )
NC
R241
75
RP601
C015
470u
270
C227
1u
C231
100K
R653
R222
1015
2KB
R642
1K
R631
5.1K
Bo
BOUT
( V IN )
NC
C226
0.01u
R238
75
Q204
1815
D201
5.6V
Q205
270
29303132333435363738394041424344454647484950515253545556
FBEXT
NC
FBEXT
V IN
Y IN
U IN
R237
75
D203
4148
D204
4148
D202
4148
R415
1K
Q401
1815
R643
1
5.6K
R645
22
IC602
L7808 C645
Q004
R654
5.1K
1815
R644
1/1W
R647
1/1W
C319
0.1u
D307
4148
5V(A)
BO
GO
RO
MUTE
R648
10K
2
C2482
KA33V
R045
5.1K
470u/35V
Q301
RO
GO
BO
8V
GND
12V
V.POSITION
V.SYNC
24V
IC003
C642
C303
1000P
C646
1u/50V
1000U/16V
ON/OFF
R324
2
270
C313
1
R323
C304
3900p
R326 5.1K
R321 2.2K
33V
110V
8V
5V
24V
18V
HD
HD-6-11
47u/35v
2.7K
Q303
1815
SC
H.SYNC
110V
BC
T302
C301
2200P
Q304
1815
XS201
C315
1u
D207
4148
ST1803DHI
CRT BOARD
R504
560
C502
R509
470
C503
560P
R506
D301
4148
Q302
Q507
1015
R511
470
R333
1K
R304
560
C329
560P
R302
2.2K
R303
5.1K
R336
1/1W
8n2/1.6kV
R334
2.2K
C331
1u
C321
560
R502
470
C508
560P
R519
560
R512
470
R517
1K
BA158
6n8/1.6kV
560P
C505
D302
C322
C507
560P
C506
560P
C504
560P
D504
4148
47u
TDA8174
C311
1000P
C314
100u/35V
R313
22K/1W
IC301
R316
1.5
Q503
1815
R514
560
Q502
1815
R501
560
Q506
1815
R518
560
D505
4148
FLYV
R314
2.2K
C318
0.39u/400V
C317
1u/160V
R338
1/1W
T301
8
9
5
4
3
2
1
R513
1.5K
R521
680
VCC1
BA158
R311
2.2K
C305
47u
R342
68/1W
C319
C328
680P/500V
D306
BYT01-400
R306
22K
VP
D302
R312
2.2K
R313
39
36uH
Q504
2482
Q501
2482
Q505
2482
R315
C317
2200u
IC302
L7818
L301
R312
1K/0.5W
V OUT
10K
R335
1/1W
BC
C312
0.047u
C331
100P
R516
2 2 2
15K
180V
GND
R318
R317
R343
220/1W
C327
22U/250V
7
C309
R341
0.047u
8.2K
R507
15K
V AMP
V.SYNC IN
34567891011
100K
100K
R331
270/0.5W
XP302
HV
FV
SV
24V
GND
R308
10K
R515
3.3K
R508
3.3K
R529
3.3K
R531
15K
10u/250V
VCC2
H-DY
2 2
C501
HEAT
2
POWER
12
R328
1.5
V-DY
V.SYNC
R248
2.2K
C318
0.22u
A48QA220X
CRT
R532
1/1W
C509
2200p/1.6KV
V.AMP
+180V
HEAT
GND
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