TCL DVD-F70 Service Manual Download Page 12

11

MUTE

RN2

33Rx4

1

8

2

7

3

6

4

5

VCCA

MIC/HL

MUTE

+

C211
220uF/16v

VA+1

ALCK

+

C210

100uF/16v(OPEN)

MC

-24V

MAINL

R1

C191

10uf/16v

C207

10uF/16V

VA-1

VA-1

R109
0R

+5VP

Sy

VCCA

C171

1500pF

R140

10K

MAINR

R112
10K

VA+1

R115

10K(open)

L1

VCC

CVBS

+3.3V

F-

R152

OPEN(10K)

R118
10K

Sc

C176
150pF

R133

0R

R142 0R

+5V

R150

220R

V25

ACLK

C203

10uF/16V

+

-

U14B

4558

5

6

7

8

4

C198
0.1u

C185

10uF/16V(short)

VA+

R101
10K

R155

OPEN(0R)

R132

OPEN(100R)

R147

3.3K

R138

0R

MUTE

C186

OPEN

R153

OPEN(0R)

VA+

F+

MAINR

R103
18K

VA-1

R128
0R

ASDAT[0..2]

ASDT2

Q20
OPEN

VCC

ML

R143

1K

DV33

Q16
9014C

R119
3.3K

VA-1

VA+

VA+1

R91
18K

D3

1N4148

VA+1

R

L1

FB AXIAL(OPEN)

Q22
OPEN

R93
0R

Y/G

+

-

U13A

4558

3

2

1

8

4

R157

10K(open)

MODE

Ls_OUT

VSCK

Q17
OPEN(9015C)

C197
0.1u

HSYNC#

LS

MUTE

LFE_OUT

R120
20K

R137

100K

R110

10K(open)

CN1

CON12(2.5mm)

1
2
3
4
5
6
7
8
9

10
11
12

C169

10uF/16V(short)

R114
18K

CVBS

VCCA

R165

0R(open)

R126

20K

U11

WM8746

1

11

12
13
14

9

8

10

2
3
4
5
6
7

15
28

20
24

26
22
18

27

25

23

21

19

17

16

DVDD

DGND

LATCH/12S
SCLK/IWL
SDIN/DM0
MUTE

MODE

LRCLK2
MCLK
BCLK
LRCLK
DIN0
DIN1
DIN2

AVDD1
AVDD2

AGND1
AGND2

GR0
GR1
GR2

OUT0R

OUT0L

OUT1R

OUT1L

OUT2R

OUT2L

CAP

Q23
OPEN

MUTE

+5VP

ML

D5

1N4148

VSDA

+

-

U12B

4558

5

6

7

8

4

PMUTE

SL

Sy

MIC1

MD

C183

1500pF

Q13

8050

C168
150pF

R172

OPEN

C201

0.1uF

R113
3.3K

VCC5

VA+

SR

R97

10K(open)

CENT

MIC

D6

OPEN(1N4148)

MC

R135
100K

R131

33R

VA-

+5VP

+5V

R141
0R(OPEN)

R122
0R

MIC1

CN

MD

R173 OPEN

Q21

OPEN

R96
0R(OPEN)

R148

10k

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

ASDT1

C188

10uf/16v

VSCK

R127

10K(open)

R162

10K(open)

R121

10k(open)

R154

0R

VA-

Sc

VA-

SUB

R145

10K

VA-1

R124
10K

MICD/HR

R125
3.3K

C179

1500pF

C190

10uf/16v

R161

0R

SUB

C184
150pF

C205

0.1uF

R144

0R(open)

C166

OPEN

+

C212

220uF/16v

R106
10K

ABCK

R89
10K

PCON

C174

OPEN

C187

10uf/16v

+

C208

470uF/10v

L5

FERB(0805)

ML

R116
0R

Q15
OPEN

ASPDIF

MUTE

MAINL

+

C199

100uF/16v(open)

+5V

ACLK

R95
OPEN

Q14
OPEN

R134

OPEN(0R)

CENT

ALRCK

C204

0.1uF

C182

OPEN

ABCK

R99
10K

R164

10K

C170

OPEN

VCCA

R136

10K

L

MD

R105
OPEN

C194

10uf/16v

C175
1500pF

ACLK

CN

MC

R117
OPEN

R149

10K(open_)

VA+1

CN3
6PIN*2.5

1
2
3
4
5
6

MUTE

R90
3.3K

CN2

con20(1.25)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

SW

MUTE

L1

C163
1500pF

ABCK

SL

MODE

C214
0.1u

VA+1

ALRCK

VA-1

+5V

VA+1

Rs_OUT

Q18
9015C

+

-

U14A

4558

3

2

1

8

4

C167
1500pF

R98
0R

VA+1

MIC

ASDT0

MC

R92

10K(open)

ML

+

C213

100uF/16v

R108
3.3K

Q26
OPEN(9015C)

Pr/B

L

R

L6

2.2R

RS

C173

10uF/16V(short)

+

-

U13B

4558

5

6

7

8

4

C192

10uf/16v

R129
OPEN

C178

OPEN

R102

3.3K

VCCA

C165

10uF/16V(short)

L3

FB AXIAL

+

C195

100uF/16v

ALRCK

VA-1

MICD

CN11

CON9*2.0(open)

1
2
3
4
5
6
7
8
9

R111
OPEN

SW

ASDT2

C200

0.1uF

C189

10uf/16v

R171
0R

C196
0.1u

R107
18K

Q19
9015C

Pb/R

C180
150pF

R151

OPEN(10K)

R174
OPEN

U15

OPEN(78L05)

2

1

3

R123
OPEN

C177

10uF/16V(short)

C181
10uF/16V(short)

VA-1

RS

+5V

VA+1

VSDA

C172
150pF

+

-

U12A

4558

3

2

1

8

4

R156

0R

R163

0R

VA-1

ALRCK

C206

0.1uF

C202

0.1uF

R94
0R(OPEN)

Decoder schematic circuit 2

Audio D/A

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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