Text preview for : CHINA TV with TDA9373 (N501), TDA7057 (N602), TDA8356 or TDA8351 (N301).pdf part of China China Tv with
TDA9373 (N501), TDA7057 (N602), TDA8356 or TDA8351 (N301) , TUNER ENV59D68F1E (U101), POWER 2SC4237, 2SC3807, 2SB892
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R217 15K C2688/BF422 V201 +5V-1
R218 470 C2688/BF422 V211
R210 15K
R246 470
SW707 KEY
Gnd Vol.+
SW706 KEY
Gnd Vol.-
SW705 KEY
Gnd Prog.+
SW704 KEY
Gnd Prog. -
SW703 KEY
Gnd Menu
SW702 KEY
Gnd AV/TV
+3.3V
R726 3.3K R727 47 R756 4.7K
1 2 3 4 Gnd WP n.c. A2 Vss Vdd PTC SCL SDA 8 7 6 5
U101 ENV59D68F1E
Lo/BS2(SDA) Mi/BS1(SCL)
R725 1.8K
R724 1.2K
R723 1K
R722 620
+8V
R721 470
R757 100 C728 10nF
Gnd
CP701 HS0038 R758 3.3K R777 27K R705 27K C727 56pF
+8V +3.3V Gnd
XS201 CON6
6 5 4 3 2 1
R219 R? 47 R220 10K R221 10K D208 IN4148 R222 10 C206 270P
V202 BF422 V205 BF423
R237 47 R238 10K
V210 BF422 V210 BF423
R759 3.3K
R238 10K D216 IN4148
R240 10 C208 270P
C726 56pF
3 2 1
R225 470
R241 470
EHT
+5V-1
R204 1.5K R205 1.5K
XP205
KB KG KR D
i.c.(+33V)
D Hi/n.c. AGC
i.c.(V+)
IFGND
R121 10
IF
+
VT
V+
i.c.
+8V
10
11
1
2
3
4
5
6
7
8
9
N807 7805
In Out
Gnd
R753 100 R755 100 R716 3.3K R701 1K R780 2.2K R717 3.3K
1 2 3 4
C732 47uF/16V XS202 CON5
1 2 3 4 R201 470 C214 0.1u/500V
R211 1K
+
Gnd
R102 27K
R529 6.8K
Gnd
C108 10uF/16V
Gnd
C109 10nF C110 10nF
R110 330 R105 4.7K
L102 1uH
Gnd
C112 10nF Z101 S2950
4 5 +B
N702 24C08
R750 3.3K
Standby SCL SDA Tuning System Key Vol.1 Vol.2 Vss C/P Band1 Band2 VssA SECPLL Vp2 DECDIG PH2LF PH1LF Gnd3 DECBG AVL/EWD VDRB VDRA IF1 IF2 IREF VSC Tuner AGC
N501 TDA9373
IRin AV2 AV1 VddP Reset XTALout XTALin OscGnd VddC VpE VddA Bout Gout Rout Blanking BCLin B2/Uin G2/Yin R2/Vin INSSW2 AUDOUT/AMOUT CHROMA CVBS/Y Gnd1 CVBSINT Vp1 IFVO/SVO PLLIF EHTO AUDEXT/QSSO FBISO H. out +8V 64 63 62 61 60 59 58 57 56 55 54 Gnd 53 52 51 50 49 48 47 46 45 44 43 42 41 40 Gnd 39 38 37 36 35 34 33 Gnd
R766 100
Gnd
C214 4.7u/500V
R201 220K
R232 15K
R235 470
R206 1.5K
R227 47 R228 10K
C2688/BF422 V231
V207 BF422 V208 BF423 R231 470
G1
G2 G3
C116 10nF
1
C708 2.2uF/16V
+
L701+3.3V 10uH C707 100nF L703 +3.3V 10uH
R208 1.5K
S-Gnd
R103 100K
+
C102 10nF +
V101 BF370
+ +
10 2 Gnd
ZD702 uPC574
R772 15K
5 6 7 8
2
R229 10K D211 IN4148
R236 10 C207 270P
XP204
1
C701 10uF/16V
R718 5.6K
Z701 C702 33p 12MHz C703 33p
Gnd Gnd +3.3V
CON1 C203 1000pF/2KV
C107 4.7uF/16V
R107 2.2K R108 82
Gnd
C106 C101 Gnd C105 4.7uF/16V 4.7uF/16V 4.7uF/16V
R109 22
Gnd
R114 12K
R775 10K C731 100nF
Gnd
Gnd
C704 R770 10uF/50V 12K R771 10K C730 100nF V701 PH2369
+
+
R782 5.6K
R781 2.2K
Gnd
9 10 11
C706 100nF
+
S-Gnd
+
3
8
L702 10uH R902 R903 100 R904 R901 100 10K ZD905 C901 100nF C902 100nF C903 100nF C517 C511 10uF/16V 100
C705 100uF/16V
Gnd
Gnd +8V
L505 10uH C512 100uF/16V
+
C515 100nF
Gnd
Stand-by
R113 3.3K V102 BC548
+5V Gnd
+8V
C909 C908 220nF 4700pF C918 2200pF
220nF 14
15 16
ZD907 BZX79C8V2
R906 22K
R306 2.2/1W
1
2
3
Vp
I+
I-
13
+16V-1
4
5
6
7
8
9
Gnd
AV1
AV2
R111 47K
C907 1uF/63V ZD501 8.2V R729 3.3K
Gnd
R910 15K
17 18 19 20 21
BZX79C8V2
1 2 3 4
Gnd Gnd
C508 C509
100nF 2.2uF/16V
+
XP902 CON4
R302 3K C305 100uF/25V C301 10n C302 10n
+
C306 22uF/50V R307 33/0.5W R309
1 1
Gnd +35V
X001
Video1
Gnd
R001 82
Audio1-L
C005 100nF
N001 HEF4053
1 2 3 1 0 16 15 14 1 0 5 6 1 0
+
R007 10
TO 0'
Vol1
Audio1-R
R003 47K R002 47K R004 82 C006 100nF
Vol2
C
Video2
4
13 12 11 10
C001 10uF/16V R712 3.3K R714 3.3K
C530 22nF
Gnd
Gnd
Audio2-L
Gnd
31 32
+8V
2
Audio2-R
R006 47K R005 47K
C003 100nF C004 100nF
R525 3.9K C520 R907 820K
+
SNDPLL/SIFAGC AVL/REFO
R531 100K R532 27K
Gnd
7 8 Gnd
9
C923 2.2uF/50V
C912 100uF/16V
+
Gnd
+B
R416 100
1200p
Gnd
R534 1.8K
1
C538 1000p
Gnd
C516 1uF/16V C405 220pF/500V
R401 3.9K
R426 4.7K
C427 1uF/160V R412 5.6
7
+
Video-Out
+8V
Audio-Out-L
+5V
Audio-Out-R
R009 C009 10 10uF/16V R010 220K
+
FM SC
+8V
Output2(+)
Output2(-)
Input(1)
Input(2)
PGND2
Gnd
Output1(-)
Vdd
Gnd
Output1(+)
1
N002 HEF4052
R008 10
16
+
Gnd
V001 BC548 R012 1K V002 BC548 R013 1K
Gnd Gnd +8V 1 2 3 4 5 6
R506 47
SGND
R021 220 X005 S-VHS R022 220 R019 82
Gnd
n.c.
0
10
11
12
C007 10uF/16V
1 2 3 3 0 1 2
13
3 4 5 6 7
14 13 12 11
A0
Gnd
C008
+
C002 10uF/16V
R011 220K
R538 180 XP560 CON6
Gnd
1
2
3
4
5
6
7
8
9
Z507 XT5.5 Z508 XT-6.5
Vp
2
15
47
Gnd
+
R511 330
Gnd
V502 BC548
R522 47 R525 470
Gnd
PGND
Vol.1
Vol.2
10uF/16V
B
Gnd
R015 1K
C011 10uF/16V
+
2 TO 4 Decoder
Vee Vss
+
R020 82
E
10 9
V505 BC548
Gnd
Gnd
+
1 2 3 4
8 Gnd
A1
R014 10
C010 470uF/16V
+
R016 1K
C012 10uF/16V
XS603 CON3
3 2 1
GND +130V
R826 47K
1 2
C822 220uF/160V C821 470pF/1KV D811 + MYV28-600 R821 12K R822 100K
R825 150K
ZD802 BZX79C6V8 R827 22K
2 1
2
D801 TVR4N C807 1000pF/1KV
1 2
C808 L802 1000pF/1KV LCLI-5
+
4
3
N801 PC817B R808 120K R809 120K
V806 BC548 RP801 2K R828 4.7K
Gnd
D805 TVR4N D802
C811 150uF/400V
R812 68
3
D812 BYM26B T801
13 12 9
V807 D882(P) R829 2.7K
5
to
C802 0.1uF/275VAC
XP802 CON2
RT801 MZ73-18 L801 LCLI-5
TVR4N C806 1000pF/1KV
7
R802 5W/1.8
C809 1000pF/1KV D806 TVR4N
C816 680pF/2KV R811 39
2
C825 470pF/500V
D807 1N4148
R810 15K
+
V802 C4237
C826 220uF/35V
R830 10K V808 BC548 R837 2.2K
14 7 15
Gnd
C801 0.1uF/275VAC
1
D808 1N4004 R801 220K F801 3.15A/250VAC R805 5.6K V801 2SB892
C815 100nF R815 22 R816 1.8K V805 2SC3807 C819 R817 22K C818 12nF
1 10 2 16 11
C837 D815 BYM26B 470uF/25V C848 22uF/25V
+
A
220VAC SW801 KDC-A10
D809 1N4148 R807 680
C836 470pF/500V D816 BYV28-600
+
V809 D882(P)
Gnd
Gnd
+
R819 12M/RS11
C847 100uF/16V
Gnd
R845 470 C820 15nF 1000pF/400VAC
Gnd
C832 470pF/500V
+
C835 470uF/25V
Gnd
25"
5
1
2
3
4
O
R112 47K
R728 3.3K
R741 100
C536 4700
R305 100 R301 100
22 23 24
1000pF C519 100nF
R920 82
+
R923 1K
GND
GND
2.7
1
R530 39K
Gnd
25 26
R921 R922Gnd 82 82 L901 10uH R502 390 C505 Gnd 100nF R533 1K
+
R308 1.2 L401 AC41A ZD405 BZX79C8V2 C418 390n/400V
VIFB
VOA
VOB
VFB
Gnd
C518
Vguard
C736 10uF/16V
12
Gnd
ZD906 BZX79C8V2
R905 33K
+8V
XP201 CON5
1 2 3 4 5
N301 TDA8356/8351
R312 22K
+
+
R310 330
1
C309 220nF/100V
R311 22
V
Gnd 5 4 3 2 1 C
+8V
H
C532 100nF C529 3300pF C514 1000pF C513 1000pF C528
+
27 28 29
AUDEEM/SIF1 DECSDEM/SIF2 Gnd2
C915 22nF
C426 270pF/500V
R415
1
R417 680 L405 6.8mH
Gnd Gnd
D408 1N4148 R418 1K R419 56K
XP402 CON5
AV1
AV2
FM
Stand-by
Vol1
Vol2
10uF/16V 30
1K
T402 FBT
2 10
ZD401 BZX79C15V
C522 330p
Gnd
C409 10uF/160V
+
Gnd
1 6
11
R427 1.5/2W
EHT
XP202
4 3 2 1
R915 27K
8 5 +16V-1
CON4
12 Focus Gnd
+
C510 47uF/16V
R503 2.2K
V501 BC548 R521
L502 6.8uH
R510 1.8K R519 330
N602 TDA7057AQ
D405 BYV95B D406 BYD33G D407 BYD33J
Gnd
4
13
+45V
G2
R430 1.8K D410 1N4148
+
3 7 9 +8V
R422 1K
C615 0.022uF V602 BC548
+17V Gnd
C425 10uF/25V
Gnd
+
R536 47
+8V
Gnd
Gnd
Gnd
R611 15K
C625 10nF
Gnd
R535 56K C507 1uF/16V
R537 470
C527 47uF/16V
C622 10nF C617 1000uF/25V C621 470nF
R303 100K XP601 CON4 C417 330uF/35V
+ + +
C412 470pF/500V C415 22uF/250V
R425 5.1K* C420 100nF
Gnd
R421 10K D411 1N4148
Gnd
D601 1N4148 R607 10K
+
R936 390
Gnd
C612 100uF/16V
R620 1.8K
R610 0.22/1W C626 470nF
C616 22nF
Gnd
C416 100uF/63V Gnd
B
Gnd
V601 Gnd BC558 R608 47K
XP603 CON2
R621 6.8K
Gnd
R628 1.8K
R629 6.8K
Gnd
R612 47K
V605 BC548
C620 0.022uF R615 15K
Gnd
+24V
+
R480 C450 100uF/35V R476 680 C477 2200pF 6.8K
R481 12K
Gnd
+
Gnd
R455 2.7K
R456 1W/6.8
1
V456 BC558 V452 BC548 V457 D2012 D450 1N4148
Gnd Gnd
C458 6.8uF/100V
+
O' TO O
Gnd
Gnd +24V
2
R838 100 R841 560
R840 1K V840 C1815 ZD806 BZX79C2V4
Gnd
V841 C1815
+3.3V
+
Illustration: 1. The unit of all resistors is . K=1000 , M=1,000,000 2. The power of all unmarked resistors is 1/6W. 3. The unit of capacitors is F commonly. "p" represents for pF. If there is no additional illustration, the working voltage of capacitors is 63V. 4. This diagram only illustrates the basic and typical model. Exceptional parts or part circuits may be different from the fact circuit. Note: 1. As the parts marked with are relevant to the whole-set's safety, the replaced ones must be the same with Service Manual. 2.The circuit enclosed by = = is connected to the AC power directly. While repairing, the service man should connect a buffer transformer between TV and AC power to avoid electrical shock.
Gnd
R496 68K
+24V
R407
2
270 C401 47uF/50V
+
C402 470pF/500V
T401 BCT-25-1K1
V402 BU2508DX/ BU2720DX R410 82
C406 C407 8n2/2KV 8n2/2KV D412 BY228 D415 BYW95C
A Gnd
N806 7808
In Out
Gnd
C888 470uF/10V
+8V
L402 600uH
Gnd
Gnd
+
R408 2.2K R402 100 V401 2SC2383O
Gnd Gnd
Gnd
Gnd
Gnd
C846 100uF/16V
+5V-1
Gnd
R732 470 D701 LED
Gnd
C403 3900pF
Gnd
C413 33n/400V
C845 100uF/16V
+
ZD807 BZX79C5V1
Gnd
Gnd
+16V
Only For Reference
29"
6
34" TDA9373 Narrow Power Voltage Circuit Diagram
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