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HT-3718
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Haier HT-3718 Service Manual page 19
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11.
Circuit Diagram
1
2
S O C K E T - 21
L ?
V I D E O i n
V I D E O out
R i n
R 412 82
R 412 82
R 418
+5V
C 404
68
22nF
R 417
10
D
R 401 82
C 403
22nF
C 420
10uF
N 401
H E F4053
AV-IN
V2
C 499
C 411
22nF
C 412
22nF
22nF
R2
C 498
22nF
L2
R 406
R 499
47K
47K
C 401
470uF
SV H S- Y
SV H S- C
SV H S- C
A V 1
X 105
S- V H S
R 415
R 416
82
82
D Z 203
U P C 574
R 206
10K / 3W
+110V
R 205
+8V
C 205
12k
10uF/ 50V
R 101
A G C
R 441
U2 0 1
4K 7
TDQ
C 101
A G C
6. 8K
4. 7uF
C 103
C 201
R 102
R 202
R 201
V 403
100nF
100nF
C
T uni ng
C 1815
T U
C 102
4K 7
10K
10K
0. 01uF
V i deo O ut
2S C 1815
V 103
L A N
R 199
B and1
C 105
U /V
10K
10uF
R 198
B and2
C 106
H /L
10K
L 101
10uF
10uH
0. 01uF
+8V
R 112
C 115
+5V
10
B M
C 109
R 108
R 110
L 102
R 119
R 117
C 108
0. 01u
C 199
4. 7K
180
4K 7
2. 2K
1uH
16V /100u
0. 01uF
C 112
Z 201
C 110
0. 01uF
V 101
2S C 2216
IF
0. 01uF
V D 101
B A T 81
38M
R 107
R 111
R 118
2. 2K
22
3. 3K
K 7266
R 116
V 102
2S C 1815
56K
R 115
82K
V OL +
S W 007
R 256
220
2S C 1815
R 008
V 252
V OL -
S W 006
1. 8K
R 268
1. 5K
R 007
C H+
S W 005
1. 2K
R 260
39
R 259
R 006
2. 2K
C H-
S W 004
1k
R 009
V 255
+3. 3V
R 005
3. 3K
2S C 1815
R 261
M E N U
S W 003
620
R 000
100
L 01
180
R 258
Ð ³ ² ¨ Ò Ö Ö Æ Æ ÷
4K 7
R 002
T V / A V
S W 002
470
V D 001
B
S L P -177B
T P1
N 602
D B - 1. 3- 08
7805
+5V
220V
I n O ut
Gnd
C 600
C 602
5 0V 470uF
1 6V 100uF
!
E M01Z
V D 605
V D 60 1 V D 604
220V
+5V
220V
1N 4148
R 604
10K
V 602
R L P1
2SC 536
L K 1aF- 12V
R 603
V 601
ST A N D B Y
2SC 536
10K
V D 5 0 3 ~ V D 5 0 6
R M1 1 C
R T 5 0 1
!
X S 5 0 2
L 5 0 2
X P 5 0 2
MZ 7 3 -1 8
*
1
3
2
R 500B
N 501
R 5 0 5
470K
L F -U 1 6 -0 0 1
1
L 504
4
5 W 2 7 0
V FB
1
1
F/ B
R 500A
C 5 0 8 ~ C 5 1 1
!
2
470K
1 K V 1 0 0 0 P
L 01
V C C
SY N C
R 5 0 2
3
5
7 W 1 . 5
C 5 0 7
Ð ³ ² ¨ Ò Ö Ö Æ Æ ÷
A C 400V
!
C 5 0 2
2 2 0 u / 4 0 0 V
0 .1 u / 2 5 0 V A C
A
R 578
R 515A
L 5 0 1
C 598
470
V D 596
33K
I N 4148
392
R 517
D ?
7 3 5 5 0 4 C
600
R 511A
V D 520A
V D 520
!
C 5 0 1
D I O D E
33K
B 1206
E R B 4304
0 .1 u / 2 5 0 V A C
473
S 5 0 1
C 514
C 513
47u
!
K D C -A 0 4 -S
X P 5 0 1
!
!
R 5 0 1
F 5 0 1
0 .5 W 2 2 0 K
V D 5 0 1
4 A / 2 5 0 V
!
E R Z 1 4 V 4 7 1 K
1
2
3
4
5
C 406
X S3 0 6
1uF/ 16V
1
R
R 420 100K
2
L
V 401
C 1815
A L i n
T ext
A R i n
C 405
C 407
10uF/ 16V
1uF/ 16V
R 421
G i n
B i n
A L out
A R out
470
R 303
R 302
100
100
R 426
100K
R 410 82
R 411 82
R 408
R 409
47K
47K
C 402
V 402
10uF/ 16V
C 1815
R 425
470
8V
R 419
+ C 415
10
22uF/ 16V
C 409
1uF/ 16V
R
G
B
SY S
V I D E O / Y
SY S
A G C
+5V
R 240
10K
R 236
R 241
100K
680
C 231
R 440
C 238
22nF
330pF
4K 7
C 237
C 239
1. 2nF
1. 0uF
C 236
C 235
C 232
R 239
10uF
6800pF
R 242
39K
100nF
3. 9K
+8V
R 265
47
C 250
47uF
L 250
R 250
8. 2uH
2S C 1815
C 246
V 250
1. 8K
22nF
R 252
C 240
R 266
R 247
R 245
Z 250
150
4. 7uF
100K
390
R 255
R 251
1. 8K
C 247
X T 6. 5
100
180
100uF
C 242
Z 251
R 262
1. 0uF
X T 6. 0
+8V
+8V
27K
C 241
100nF
L 201
Z 252
L 252
C 229
10uH
X T 5. 5
6. 8uH
1nF
R 267
R 257
27K
+8V
470
Z 255
X T 4. 5
R 253
V 256
2S C 1815
10K
V i deo O ut
!
V D 507
PC T 817C
R 571
R 591
127K
R 579
1. 5K
C 571
R 577
R 572
104
39K
V D 572
10K
1K
1N 4148
V 571
N 571
K A 431
K SC 815
R 573
V D 511
R 576
2. 49K
15K
B Y D 33D
R 581
22K
+
R 521
C 522
2. 2K
1 00uF/ 35V
C 521
47 0pF/ 500V
!
V D 512
+24V
B Y D 33D
T 501
R 535
3
13
R 529
2.2/ 0. 33W
1. 5K
+
C 526
12
C 525
1 00uF/ 35V
R 530
47 0pF/ 500V
10K
V 508
st andby
C 531
9
C 1815
222
14
7
R 536
V D 515
15
1/ 1W
B Y D 33D
1
10
C 536
+
47 0pF/ 500V
C 537
R 5 9 8
4 70uF/ 35V
+
N 507
2
16
C 537
7805
4 70uF/ 25V
1 0
V 509
R 537
2SB 892
11
I n O ut
2. 2K
+
Gnd
C 547
1 00uF/ 16V
R 503
R 546
C 532
!
10K
N 506
!
1. 5K
47 0pF/ 500V
R 5 2 8
R 5 2 9
V D 516
I n O ut
0 .5 W 8 . 2 M
B Y V 95A
0 .5 W 8 . 2 M
Gnd
V 508
7805
2SC 536
C 5 3 3
+
C 535
A C 4 0 0 V 2 2 0 0 p
4 70uF/ 25V
!
3
4
5
6
7
C 331
R 331 4. 7k
C 330
R 329 4. 7k
10/16V
0. 01
R 324
4. 7k
C 326 0. 01
N3 0 1
LA4 28 5 /8 7
(R)
1
2
3
4
5
6
7
8
9
10
1
2
3
C 328
R 328
C 311
C 303
10k
10/16V
10/16V
0. 015
R 321
R 322
C 302
C 321
4. 7k
10k
0. 01
10/16V
R 320
680
R 304
4. 7k
R 312
+8V
+8V
C 312
10k
V D 320
C 323
0. 01u
100/16V
V D 321
C 324
1N 4148
V D 310
1N 4148
100/16V
C 329
C 325
1N 4148
2. 2/50V
0. 01
V 333
2S C 1815
V 332
R 311
2S C 1815
R 314
1k
10k
SW
V O L 1
V O L 2
V D r v+
V D r v-
V O L 2
B and2
B and1
+8V
R 232
3. 3K
L 205
C 216
10uH
10uF
C 212
R 231
R 230
R 238
R 237
4. 7K
4. 7K
C 220
100
100
1uF
100uF
C 219
+8V
C 215
C 227
C 228
R 235
4. 7nF
1nF
1nF
15k
C 226
22nF
2. 2uF
R 225
27K
C 230
3. 3uF
C 225
C 222
C 221
C 218
22nF
2. 2nF
220nF
220nF
C 267
22nF
R 272
R 930
R 270
100
R 275
R 276
L 270
C 268
1. 5K
2. 2K
100
100
10uH
C 245
C 248
R 248
C 260
C 924
1. 0uF
1000pF
5. 6K
0. 1uF
0. 22uF
100uF
C 266
V D 203
V D 202
V D 201
1000pF
L 260
R 249
1. 2K
A udi o 2
10uH
1N 4148
1N 4148
1N 4148
C 275
47uF
+3. 3V
X S001
V D 910
1N 4148
C 262
C 291
4. 7uF
4. 7uF
C 925
X S5
0. 22uF
R 931
C b
3. 3K
C r
Y
R 932
St andby
V D r v+
120K
R 918
1K
V D 908
1N 4148
R 917
D Z 901
680
B Z X 79C 15V
R 901
D Z 900
R 926
3. 9K
110V
B Z X 79C 8V 2
4. 7K
C 959
R 803
4. 7uF
C 802
2. 2K
C 905
2. 2nF
22 0pF/ 500V
12. 5V
R 538
+24V
56/ 2W
R 966
10
R 541
R 540
1K
1K
+
R 975
V 541
C 950
100K
C 1815
R 964
R 967
V 950
10uF/ 16V
470K
1K
R 977
V 540
2PA 1015
G nd
220K
C 1815
C 952
R 972
R 959
1 00uF/ 16V
+3. 3V
V 951
10K
2. 2K
C 1815
10uF/ 50V
R 968 1. 5K
C 955
D Z 506
0. 1uF
R 969
R 970
R 971
B Z X 79C 2V 7
R 999
R 978
39K
820
270
1. 5K
C 953
39K
G nd
0. 22uF
+5V - 1
R 539
C 957
0. 1uF
430
D Z 595
+
C 538
B Z X 79C 5V 1
1 00uF/ 16V
+5V
+24V
R 907
270
2
T 901
C 901
V 902
+
H - D R I V E R
C 534
47uF/ 50V
B U 2508D X
1 00uF/ 16V
5n6/ 2K V
+8V
+
C 902
470 0pF/ 500V
R 902
R 910
100
82
R 908
2. 2K
0. 03 3uF/ 630V
+
C 515
+16V
1 00uF/ 16V
V 901
C 910
B F422L
100 0pF/ 500V
R 905
100
6
7
19
Circuit Diagram
8
9
10
MA IN B O A RD
20V
C 307
N3 0 2
LA4 2 85 /8 7
(L)
0. 01u
C 306
4
5
6
7
8
9
10
2 5V /1000u
C 313
8 W /8O H M
0. 015
C 310
R 317
25V /470u
R 310
C 317
22
0. 1u
680
C 321
8 W /8O H M
X S3 0 2
25V /470u
R 327
C N 703
C 327
22
0. 1u
1
V D 312
X S3 0 2
C 315
1N 4148
50V /2. 2u
2
V D 311
1N 4148
3
C 318
16V /100u
C 316
C 314
4
0. 01u
16V /100u
R 332
+12V
10k
5
V 331
R 330
1
2S A 1015
10k
2
3
C 319
V D 331
C N 702
16V /100u
1N 4148
+5A
N2 0 2
V O L 1
SY S
AT2 4 C04 /0 8
R 209
100
R 228
R 218
R 210
A 0
V C C
SB
3. 3K
47
4K 7
C 206
C 210
T E S T
A 1
10uF
0. 01uF
R 207
100
A 2
S C L
R 227
R 226
R 208
5. 6K
5. 6K
100
G N D
S D A
+5V
C 208
C 207
C 209
56PF
56PF
R 221
R 220
27K
3. 3K
0. 022uF
R 222
R 219
R 217
R 215
R 216
R 211
1. 2K
1. 2K
1K
3. 3K
3. 3K
3. 3K
SA
St andby
N 201
T D A 9361
C P101
I R
+5A
C 132
10nF
G nd
Z 202
C 271
R 282
47
12MH z
22nF
A V 1
C 269
C 270
C 272
33pF
33pF
10uF
R 212
R 213
V D 298
V D 299
3. 3K
3. 3K
1N 4148
1N 4148
L 271
R 299
10uH
3. 3K
+5V
R 297
V D 297
10K
1N 4148
SW
V 299
2SC 1815
R 296
+8V
1K
R 925
5. 1K *
N 801
A B L
T D A 8357
R 802
2. 2K
R 804
C 801
680K
2. 2nF
Z D 802
C 807
B Z X 79C 12V
220nF
R 812
R 813
C 809
5. 6K
2. 7K
R 811
C 808
1. 5
4 7nF/ 100V
C 805
C 803
C 880
0. 01uF
+
0. 01uF
2 20uF/ 25V
220nF
R 809
R 810
3.3 0. 5W
270/ 2W
R 806
3 . 3 0. 5W
R 807
33/ 0. 5W
R 976
C 951
R 980
+ C 806
2. 2/ 1W
6. 8K
R 981
6. 8K
+
6. 8K
L 901
22uF/ 63V
R 915
H - L I N E
1K 0. 5W
R P950
10K
C 926
V 952
H . WI D T H
3 30n/ 500V
56K
R 955
R 956
C 1815
R P951
2. 7K
47K
5. 6/ 1W
R 951
PI N C
V 956
R 916
+
2PA 1015
100 2W
C 918
R 952
+ C 921
18K
3 90n/ 250V
R 979
1uF/ 160V
V 957
1K
D 2012
R 950
5. 6K
V D 950
C 956
1N 4148
47 0uF/ 6. 3V
L 905
6. 8mH
C 908
8n2/ 2K V
+110V
C 906
V D 912
B Y 228
L 902
C 913
600uH
C 958
0. 47uF
8
9
10
11
12
C 703
G T 701 1P
103
SC
G T 702 1P
FO
R 703
H V
1. 8K
R 701
1. 8K
C 707
C 708
C 709
R 702
391
391
391
1. 8K
N 701
!
TD A 6107Q
R 707
C R T
100
3. 0
1
R 708
R 704
100
3. 0
10M
2
R 709
100
3. 0
3
1
C 704
4
4. 7u
D Z 704
D Z 703
D Z 702
2
MT Z J9. 1B
MT Z J9. 1B
MT Z J9. 1B
6. 0
5
D Z 701
V D 701
MT Z J9. 1B
E R C 24- 06
178. 5
3
6
R 705
R 710
2. 4
100
111
PR O B E 3
7
R 726
R 712
68
100
116
8
PR O B E 2
R 711
C N 701
100
C 702
114
PR O B E 1
222
C 706
V D 702
V D 703
V D 704
E R B 4304
E R B 4304
E R B 4304
10u
R 727
33K
+
0. 1uF
R N 07
C N 06
10
C N 08
C N 07
R N 10
2. 2uF
22nF
390
R N 05
C N 05
0. 022uF
150K
N N 01
C N 03
V N 01
B F370
1nF
Z N 01
k9261
R N 06
2. 7K
C N 09
2. 2uF
C N 15
R N 17
L N 02
8. 2pF
1. 8uH
C N 11
2K
10uF
C N 12
R N 12
Z N 02
coi l
C N 10
6. 8
0. 022uF
C N 16
100pF
R N 16
R N 15
0. 022
22K
22K
R N 18
10
Z N 03
C N 22
24 . 576MH z
C N 23
C N 19
0. 01uF
0. 47uF
0. 47uF
C N 18
C N 17
0. 01uF
L N 03
1uH
47uF
N N 02
T D A 9874A PS
C N 28
C N 26
1uF
0. 1uF
L N 05
+
1uH
R N 19
R N 23
C N 31
100
8. 2K
0. 47uF
R N 22
C N 30
C N 29
R N 20
0. 47uF
100
0. 47uF
R N 25
100
3. 3
L 802
L 801
2uH
2uH
V
!
T 902
5
6
10
4
3
8
2
H
1
R 927
11
2. 2
5
X 902
R 806
43V
C O N 5
V D 905
G nd
B Y V 95B
14V
4
E H T
V D 906
B Y D 33G
3
12
Focus
+
+
R 801
C 916
33K
C 917
1 00uF/ 63V
9
13
G 2
2 20uF/ 25V
1
R 922
1K
7
2
V D 911
C 920
1N 4148
FB T 2
100nF
C O N 4
X 903
V D 907
B Y D 33J
4
7
3
R 912
R 911
+
2
R 920
6. 8
+
2 . 2/ 0. 5W
220K
1
C 909
C 915
1 0uF/ 160V
4.7uF/ 250V
C 912
47 0pF/ 500V
11
12
D
C
B
A
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Haier HT-2199
Haier HT-21F99
Haier HTAR29
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