Akai ATV-350R Service Manual Download Page 16

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CF1
CF38.0

IC14

IC8

LA7642N

IC1

IC5

IC15

SDA

SCL

TEST

VCC(5V)

IC6

24C04

U1
IC5

IC7

TDA7052A

AGC

ANT

IFU1
TDQ-3CV1

TRANS-09

TRANS-PCO43

IC10

IC9

IC12

74HC4053

DK1
ANT

DK2

DK3
OULT

DC1

12VIN

C150

104

R179

100

R175
100

R178

100

R176
51K

R177

62K

R180

47K

R181

33K

C173
104

C174

104

C175

104

+7V

C177

104
C178
104
C179

104

C180

104

R182

12K

C176

220uF

C181

104

C182

104

C183

104

R184
1K5

R185

1K5

R186

1K8

R138

47K

R139

47K

R140
36K

R141

47K

R142

27K

R143

47K

R144

47K

R153

R146
36K

R147

56K

R148

47K

R149
36K

R150

47K

C148

104

C149

104

C151

104

C152

104

C153

104

C154

104

R151
100

R152

100

R155

36K

R183

47K

R154

30K

R156

51K

C157

104

C156

104

R157
10K

R158
10K

R159

10K

103

C1
104

100uF

22uF

10uF

150

100

R2
4K7

R49
220

R51
1K

R52
33

ANT1

C9
104

C12
104

C11

104

22K

R8
22K

R10

22K

12K

51K

R9
22K

R11
470

R15

4K7

R12
10K

R14

1K2

C13

680P

C14

100P

R13

10K

R16

10K

R17

10K

R18

10K

R19
680

R20
10K

R23
10K

R25
330

R27

270K

R29
4K7

R31

4K7

R32

8K2

R34
1K5

R255
3K3

D11

IN4148

R134

104

C60

102

+5V

C37

103

+8V

R59

22K

R61
100

R62
22K

R63
22K

R64

22K

R65
100

R66

22K

R67
100

R69
22K

R70

22K

R71
220

R72

22K

R73

220

R75

3K3

R76
4K7

R77

3K3

R79

4K7

IN4148
D2

IN4148

32K

C15

18P

C16
15P

IR C5V KEY GND

C18
103

C19
1uF

22uF

A1015

ZD1
3V9

103

AV2

L/R

U/D

REMOTE

SCL

SDA

C5V

+5V

AGC

+33V

16:9

4:3

VOR

POWER

REMOTE

P/N

R48

4K7

R50

3K3

C36
103

C38

223

C39

223

C40
103

C41

103

R53

100K

R55

100K

R57

27K

C43

1uF

+5V

+8V

BLK

SCL

SDA

AFT

C44
1uF

R60

100K

+5V

R68

2K2

R74

120

R78

3K3

R80
2K2

R81
10K

C47

474

C48

224

C49

333

C50
1uF

C51

100uF

VER

+5V

+8V

AGC

VOL

C82
39P
C85

102

C86

1uF

C87
18P

R101

R103

330

15uH

C90

10uF

C98

10uF

C94

0.47uF

C89

0.47uF

AUDIO

R105
180K

R104
220

C92
470P

C91

56P

LT2

VIDEO

R109

1K5

R110

R111

22K

R112

560K

R108

47K

C96

1uF

C95
4u7

C97

0.47uF

+5V

C99
103

C100
220P

R114

100

R115

R113

+5V

C101

18P

4.433MHz
C105

10uF

C103

103

R116

R117

10K

R118
150

C102
103

C104

103

C107

103

Q13
A1015

C108
103

+5V

C115

103

C114

103

C111
10uF

C113

100uF

R120

100

R121

10K

R122

R123

4K7

R124

R125
4K8

R119

+8V

CHROMA

C106

1uF

C109

1uF

C110
1uF
C112

1uF

C155
1uF

C158

1uF

+8V

C84

4u7

C88

220uF

C93

4u7

C83
472

R100

5K1

R102

R106
22K
R107
10K

R145

+ -

R83
10K

R128

R82
2K2

R85
10K

R86

33K

R87
10K

R89

10K

R91
10K

C120
104

+8V

C116
47P

+8V

C117
105

C118

102

C119

102

R126

R127
1K

R129

10K

R130
4K7

R131
33K

C121
102

BLK

CHRDM

C122

103

C123

103

C124
103

VER

GND VOL

ANT

IN5819

C29
104

C22
104

C23
104

C24
104

C25
104

C26
104

Vin

GND

Vout

IC3
78L05

C31
470uF

C28

100uF

R40
47

R36
10K

R37
1K

R38

R39
10K

D1203

FU2

C32

220uF

C35
683

100uH

R47

4K7

C34
22P/3KV

IC4

C33

104

C74
103

C30
102

R42
680K

R43
36K

R44
6K8

R45
2K2

R46
100K

R41
180K

R94

100

R96
22K

R99
2K2

VR1
1K

C61

10uF

C64

100uF

C27

220uF

D10

IN5819

IN4937

D9
IN4937

IN5819

IN4937

IN5819

C58
100uF

100uH

C66

104

C129

104

C77

104

C55
104

C125

104

C126
104

C127

104

C62

104

C72
104

C69
104

C73
104

C136
104

C137
104

C78

104

C79

104

C140

104

C141

104

C190

104

C191

104

C192

104

C189

104

C195

104

C196

104

C202

104

C203
104

C204
104

C54

220uF

C57

100uF

C56

100uF

C63

47uF/25V

C128
100uF

C75

10uF

C76
100uF

C81

220uF

C71

220uF

C70

22uF/50V

C67

22uF/50V

C80

22uF/50V

R93

10K

R97

2K7

ZD2

17V

ZD3

33V

C188
22uF/50V

C194

22uF/50V

Vin

GND

Vout

IC16
LM3480

VCC

VCC1

+5V

+17V

+8V

+7V

-15V

+12V

C52
103

C5V

IC13

R214
8K2

R167

5K6

R169
1K

R170

10K

R172

100

R173

10K

R229

20K

VR3
10K

VR4
30K

C168
47uF

C171
10P

C172

10uF

C193
104

C166

104

C167

10P

VCOM

EOLS

VGL

AVDD

VEE

VGH

+33V

VCC

C160

104

C161
104

VCC

VCC1

C185

102

R160
15K

R161

47K

R162
20K

R163
10K

R165
10K

R187
39K

R188
10K

R189

200K

R190

15K

R191

10K

R192
10K

R193

560

Q17

C186

104

R200

R203

560

R207

560

R209

560

R210

560

C165
1uF

R199

C210

10P

R194
10K

R195

560

R196

560

R197

560

R238

150

VR5

VCC

C184

100P

VCC1

HSY

NPO

OBLK

POLC FRP

EOLS

PSC

PSI

OMCLK

VCC

VIY

CSY

U/D

L/R

INH

STH

C197
702

C198
103

C199
360P

C200
102

C201
102

LT3

14.5uH

R237
15K

R239
20K

R240
560

R241
1K

R242

100K

R243
560
R244
560
R245

560

R246
560

R249

10K

R219

10K

R222

10K

R223

10K

VCC

AVDD

PDA

CPV

DIO1

DIO2

XOE

CON1
28PIN

R231

10K

R232
10K

R233

150

R234

150

GND
VGH
VCC
GND
VEE
VGL
DIO1
DIO2
U/D
CPV
XOE

VCOM
VCOM

L/R
INH
Q2H

STHL

CPH1

CPH3
CPH2

VCC
GND
VR
VG
VB

AVDD

GND

STHR

AV2

POWER

HT-TR350LA

R84
1K
R88

R90
100
R92

AUDIO

VIDEO

VEE

VCC

12V

VOR

R133

R135
220

C5V

RO
GO
BO

CSY

PSI

FRP

SYNC

VOL

AVDD

AV2

C211
222

VR2

Q14

C1815

Q15

Q16

Q11
C1815

C1815

Q4
C1815

Q7
DK

Q12

AB29Z

Q1
C1815

C45
104

C46
104

R168

10K

R171

10K

R174

10K

R164

10K

AVDD

U/D L/R

R198

10K

R201

3K3

R204

3K3

R205
2K2

R202

10K

Q20

C1815

Q19

C1815

PT4

PT3

C213
1uF

C212
10uF

C206
102

R98
4K7

R253
4K7

R254

R21

4K7

R22
1K5

R24
2K7

R26
3K9

R28
4K7

R30
8K2

R33
27K

R35

180K

SK1

POWER

SK2

TV/AV

SK3

MENUV

SK4

VOL-

SK5

VOL+

SK6

CH-

SK7

CH+

LED1

VCC

GND

IC2

REMOTE

C17
104

IR C5V KEY GND

IC11

C130
220P

C131
25P

C132

470P

C133

82P

C134

104

C135
330P

C138

392

C139

473

C142
180P

C143
202

C144

473

C145

332

C146
104

C169

104

C147
202

SK8

SCAN

SK9

RESET

CD1

C170
100uF

LED2

R256

R166

R136
6K8

R137
33K

IN4148

1
2
3
4

GND VOL

ANT

收音机

R132

4K7

R218

R261

100

R260

100

ZD5
3V9

Q25
C1815

C220
10uF

IC17

R54

0.22

R56
180

R58
1K2

R95

18K

R208

100uH

C59

102

D12

IN4937

DC2

12ViN

C10

100uF

C42

100uF

R206

P7
GND

B772

R211

R212

R213
18K2

R217
3K9

R215

820

LED3

D13

IN4007

R216

电池盒充电板

U2
431

R220

D14

IN5819

VK1
SS-12D01

C68

1uF

C65
221

R221
27K

Q10

C1815

+5V

R224

10K

IC18

Summary of Contents for ATV-350R

Page 1: ...SERVICE MANUAL Model ATV 350R RECIVER WITH MONITOR www akai ru ...

Page 2: ... CPU and subsequent supply circuit is short circuited or not Change 32K crystal oscillation Change B1203 C1815 Check whether each voltage for the output of power supply is normal or not Repair power supply and supply circuit Check whether high voltage supply N25 is open circuited or not Change audion of high voltage circuit or the high voltage transformer Check whether output of high voltage is av...

Page 3: ...1 is normal or not Whether LA76810 30 31 pins are short circuited or not and whether 18 pin is normal or not Check whether loop of 3Y26 6 8 9 and LA76810 19 20 21 is normal or not Change module of LCD software Change the broken elements of loop Check whether periphery pf 3Y26 is normal or not Change 3Y26 Yes No Yes No No No ...

Page 4: ...al or not Check power supply Check whether LA76810 13 12 11 pins are normal or not Yes No Yes Yes No No Check whether line field pulse of CPU is normal or not Check whether the copper sheet of line field synchronous pulse loop is open or short circuited or not Change 3Y26 Whether change CPU is OK Change the resistance Yes No No Check the LA76810 line field synchronous circuit No Check LCD screen ...

Page 5: ...eck whether 5V 8V power supply of LA76810 is normal or not Repair power supply Check whether peripheral circuit of LA76810 26 pin is normal or not Change 1UF 333 capacitance Change module Change 3Y26 Yes No Yes Yes No Check peripheral circuit of 4001 1C circuit for treatment of line field synchronization Change LCD screen No Yes No ...

Page 6: ...r supply and subsequent circuit is short circuited or overloaded Test whether 3Y26 5V and 7 5V power supply is normal or not Check whether 3Y26 is broken or not Check the loop of power supply circuit Test whether 5V 17V and 15V of bus socket is normal or Yes No Yes No No Change module of LCD software Change LCD screen Yes No Check the loop of power supply No ...

Page 7: ...PU 1 41 42 pins Change CPU Check periphery of 50 pin for pre central amplifier Check whether circuit of pre central amplifier and periphery of LA76810 50 pin is normal or not Yes No Yes No No Check whether AGC voltage for 5V power supply of high frequency head is normal or not Change high frequency head Yes No Check 5V power supply and AGC circuit Yes ...

Page 8: ...nce Manual 7 No Storage of Program Check whether 32V tuning voltage is stable or not Repair tuning loop Check whether AFT circuit is normal or not Repair AFT circuit Yes No Yes No Change high frequency head and sound surface ...

Page 9: ...e loudspeaker Test whether power amplifier 386 is broken or not No Yes No Yes Yes Test whether power amplifier 386 is broken or not Check whether LA76810 1 2 pins are normal or not Change peripheral circuit of 52 53 54 Change peripheral elements of 1 2 pins Change LA76810 Yes No Check whether LA76810 52 53 54 pins are normal or not No ...

Page 10: ...or not Adjust till OK Check whether power supply of each circuit is normal or not Adjust potentiometer of mainboard BRI to see whether there is change or not Change 3Y26 No Yes No Yes Set analog quantity of TV at standard Yes Check whether peripheral elements of 3Y26 are normal or not No Check supply circuit ...

Page 11: ...tal oscillation Change 32K crystal oscillation Check whether CPU 22 25 to LA76810 13 16 is normal or not No No Yes Check whether pulse input of CPU line field synchronization is normal or not Change loop elements Yes Check line field synchronization circuit Inferior character color Change CPU or LA76810 No Yes ...

Page 12: ... No Sound in AV Check whether connection conversion line is normal or not Change AV conversion line Check input socket Change input socket Change LA76810 No Yes No Yes Check the loop of audio and LA76810 51 pin and the loop of video and LA76810 42 pin ...

Page 13: ...d or not Test power is on or off Test whether IC7088 11 pin is with noise or not with screwdriver Change peripheral circuit Change peripheral elements Yes NO No Yes Check whether IC7088 voltage pin are normal or not Change IC7088 Yes No Check whether IC7088 pin 5 11 2 are normal or not No ...

Page 14: ...anual 13 Battery box can not charge Put on the position of charging ON Change IC 34063 Check whether IC 34063 1 3 5 7 pins voltage is normal or not Check whether if it is on the charging position yes No Yes Change bad elements No ...

Page 15: ......

Page 16: ...29 10K R130 4K7 R131 33K C121 102 VS BLK R G B HS VS CHRDMA AFT C5V C122 103 C123 103 C124 103 VER 1 2 3 P5 3V GND VOL ANT D3 IN5819 C29 104 C22 104 C23 104 C24 104 C25 104 C26 104 Vin 1 GND 2 Vout 3 IC3 78L05 C31 470uF C28 100uF R40 47 R36 10K R37 1K R38 1K R39 10K Q5 D1203 FU2 C32 220uF C35 683 L1 100uH R47 4K7 C34 22P 3KV 1 2 P3 1 2 3 4 5 6 7 8 IC4 C33 104 C74 103 C30 102 R42 680K R43 36K R44 6...

Page 17: ......

Page 18: ......

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Akai ATV-350R, Service Manual

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Summary of Contents for ATV-350R

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