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TCL DVD-F70, Service Manual

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TCL DVD-F70 Service Manual Download Page 13

12

Front control board schematic circuit (HV-2000)

/CSTB

SG14

R307

100

S

G

3

1

COM3

R316

100

C306
47P

R314

100

IR

S

G

2

1

9

S

G

7

SG29

STB+5V

S

G

1

1

S

G

4

0

S

G

2

2

D301 STANDBY

NOTE_ST

GND

NOTE_ST

STB+5V

K307

SG12

S

G

3

C305
47P

SG22

1

S

G

5

S

G

1

0

S

G

3

4

C302
104

REM301

REM

1

2

3

IR

GND

VCC

S

G

1

0

R310
10K

C

O

M

1

S

G

3

3

R304

10K

SG32

S

G

2

8

S

G

3

7

LCD
LCD301

1

2

4

5

6

7

8

9

1

0

1

1

1

2

1

3

1

4

1

5

1

6

1

7

1

8

1

9

2

0

2

1

2

2

3

2

3

2

4

2

5

2

6

2

7

2

8

2

9

3

0

3

1

3

2

3

3

3

4

3

5

3

6

3

7

3

8

3

9

4

0

4

1

4

2

4

3

4

4

S

G

2

2

S

G

2

0

C311
680PF

R318
51K

C

O

M

3

S

G

1

1

S

G

5

R302

10K

4

S

G

4

S

G

1

8

D303
1N4148

K304

S

G

1

3

SG18

S

G

3

6

C310
104

S

G

3

8

CON302

SERIAL/UP/4P,2.0

m/m

4
3
2
1

S

G

1

SG34

SG31

R313

100

6

S

G

1

5

SG25

S

G

3

9

S

G

1

4

S

G

6

SG27

S

G

1

2

S

G

2

4

COM2

R320
56K

R321
470R 

R317
51k

COM4

SG21

D302

1N4148

SG28

K305

U301

PT6554

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

1

7

1

8

1

9

2

0

2

1

2

2

2

3

2

4

2

5

2

6

2

7

2

8

2

9

3

0

3

1

3

2

33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

4

9

5

0

5

1

5

2

5

3

5

4

5

5

5

6

5

7

5

8

5

9

6

0

6

1

6

2

6

3

6

4

SG1/P1

SG2/P2

SG3/P3

SG4/P4

SG5

SG6

SG7

SG8

SG9

SG10

SG11

SG12

SG13

SG14

SG15

SG16

S

G

1

7

S

G

1

8

S

G

1

9

S

G

2

0

S

G

2

1

S

G

2

2

S

G

2

3

S

G

2

4

S

G

2

5

S

G

2

6

S

G

2

7

S

G

2

8

S

G

2

9

S

G

3

0

S

G

3

1

S

G

3

2

SG33
SG34
SG35
SG36
SG37
SG38
SG39
COM1
COM2
COM3
COM4
SG40/KS1
SG41/KS2
KS3
KS4
KS5

K

S

6

K

I1

K

I2

K

I3

K

I4

K

I5

T

E

S

T

V

D

D

V

D

D

1

V

D

D

2

V

S

S

O

S

C

D

O

C

E

C

L

K

D

I

S

G

4

0

7

K302

DO

C304
47P

DI

S

G

6

S

G

9

S

G

3

6

standby

D304
1N4148

CLK

S

G

1

7

R315

100

C308
104

S

G

2

S

G

2

5

R312
10K

S

G

2

3

S

G

7

SG30

SG26

S

G

8

S

G

4

S

G

3

2

K303

SG16

SG24

S

G

9

R319
51k

S

G

1

R306
10K

SG15

+

C301
47uF/10v

8

COM[1..4]

S

G

2

9

S

G

3

7

LP301
LAMP

COM1

S

G

8

S

G

3

0

R305

10K

C309
104

S

G

1

9

SG13

R308
10K

+

C307
47uF/10v

CON301
9pin-2.0mm

3

S

G

3

SG[1..40]

R309
10K

CON303

SERIAL/UP/4P,2.0

m/m

1

2

3

4

S

G

2

6

SG35

S

G

3

9

S

G

3

8

SG19

K306

R303

10K

5

SG20

S

G

3

5

C

O

M

4

SG23

SG17

K301

R301
10K

S

G

1

6

C

O

M

2

SG[1..40]

C303
47P

S

G

2

7

SG33

 

Summary of Contents for DVD-F70

Page 1: ...SERVICE MANUAL DVD F70 DVD F61...

Page 2: ...r schematic circuit 2 11 Front control board schematic circuit 12 Karaoke schematic circuit 13 Figure 1 Schematic Diagram 2 Figure 2 Basic Circuit Diagram 3 Table of Contents 1 Output schematic circui...

Page 3: ...A AG MICD HR 24V CON101 ASPDIF 6 M R TRIN AC1 A BV OARD VSCK CN2 JP1 1 AC2 9 15 VCC SL GND 24V GND VSDA D LO VD AD LS 2 AC1 VCC M R CN4 CVBS AG Cb B GND VA PCON SP MIC HL SUB KARAOKE BOARD 3 3 3V CN8...

Page 4: ...MT1369 VFD KEY 1M 8 PT2222 001 VIDEO LPF DRIVE SPDIF OUT TOP233Y TD F50 F61 F62 F63 TEA1523P TD F70 F71 RF POWER SUPPLY 2 16Mbit PT2399 ECHO MC4558 DECODER SERVO D LO VA DD MC4558 MIC AMP AUDIO D A M...

Page 5: ...cillator to measure this portion an isolated transformer must be connected Circuit of power supply may output the following power sources a If 5V voltage varies out of the permissible range check whet...

Page 6: ...ed or erode d If the above parts are normal replace U1 or the loader 3 Troubleshooting and service of decoding part a No video no audio no display on VFD and no operation of keys a Check whether the p...

Page 7: ...r IC e Check whether the signals of the 17th 19th 21st 23rd 25th and 27th pins of U5 on the decoder board are normal If not check the signals of the pins from the 2nd to the 7th If the clock signals o...

Page 8: ...her the welding from the 12th 13th 15th pins of U301 to the 37th pin is in good conditions Check whether D301 D303 on the front board are damaged whether circuit is disconnected and whether R309 R310...

Page 9: ...R VCC PDd FO FO TR TR F V1P4 R31 0 open V1P4 LOAD C57 0 1u C23 1u A RFL R13 330k D1 1N4148 Q5 9013 V2P8 V1P4 SP Q4 9012 HTRC 2 MICD MDI1 FOSO C6 100u RFOP HTRC R18 20k R34 0 0805 B B RVCC BDO C47 0 01...

Page 10: ...IOA0 IOA1 DVDD2 IOA2 IOA3 IOA4 IOA5 IOA6 IOA7 A16 A17 IOA18 IOA19 DMVSS 5 VSDA VCC5 ADIN ASDAT 0 2 A15 ABCK GND VSYNC HTRC TRSO C85 10n C97 22pF C114 0 1u DCLK CAS DQ26 V2P8 R38 0 URST GND FOSO VSCK 4...

Page 11: ...0 7 B DMA3 DMA7 Y G C146 47u 3 RDQ27 RDQ19 SCL DMA8 DMA3 3 3 HSYNC SDCKE RDQ14 RDQM2 RDQ24 RDQ7 RDQ6 DMA2 Sy C144 0 1u Y DBA0 RDQM2 CAS DQ21 RDQ23 AD5 DMA8 SDCKE GNDV 5VP A1 DBA0 5VP A10 PCE MA10 Y5 R...

Page 12: ...VSYNC C193 0 1uF R130 33R L2 FB AXIAL VA 1 ASDT1 C164 150pF VSDA VSCK C_OUT R146 3 3K 1369P3_1 SR VCC R100 2 2K L4 FERB 0805 VA 1 LS R104 10K R139 0R OPEN ASDAT 0 2 R1 VCC ASDT0 C209 10uF 16v ABCK ASD...

Page 13: ...2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 4 9 5 0 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 6 0 6 1 6 2 6 3 6 4 SG1 P1 SG2 P2 SG3 P3 SG4 P4 SG5 SG6...

Page 14: ...40 41 42 43 44 SW1 SW2 SW3 SW4 SDout SDin GND SCLK CS KEY1 KEY2 KEY3 KEY4 VDD SEG1 K1 SEG2 K2 SEG3 K3 SEG4 K4 SEG5 K5 SEG6 K6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 VEE SEG13 SEG14 SEG15 SEG16 G6 G5 G4 G3 G...

Page 15: ...B 4558 5 6 7 8 4 C16 561 C13 4 7UF 16V C14 4 7UF 50V C17 4 7UF 50V C20 561 C19 OPEN 103 M DET 6 2 5 JP1 1 2 3 4 5 6 VAM R7 15K R9 10K R11 12k C8 104 C7 101 C1 104 C30 SHORT 1UF R28 10K R20 15K U1 PT23...

Page 16: ...1 C17 10uF 16v VMODE MIXR R2 0 PSCAN C0N9 2 0 1 2 3 4 5 6 R18 470R FL Cr R MIXL R12 470R SUB1 RS Cb R R22 470R HS SUB1 R7 1K R13 470R Cr B C5 OPEN 220P CN101 con20 1 25 1 2 3 4 5 6 7 8 9 10 11 12 13 1...

Page 17: ...EA1523P 4 5 1 2 8 3 6 REG AUX VCC GND Drain RC Source C417 100uF 16V L404 3 3uH Lp 960uH C410 102 250Vac C406 0 1uF D411 FR104 C411 223 R425 1 10 W 0 D409 RU3YX R415 22k L402 10uH Q403 2N5551 R413 NU...

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