Akai A-5181 Service Manual Download Page 29

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

A[0..21]

URST#

DQ[0..15]

MA[0..11]

FS0

D

STBY

B

D

J ITFN

FMSO

V18

A2

DQ15

DQ12

WE#

BA0

DC LK

MUT

E

_

D

A

C

A18

TROPEN

A DIN

XTALI

F S

BA[0..1]

IOA

C

D

A

CVDD3

MA1

AD2

FMO

OP-

TEZISLV

R

F

V

DD3

C

RGB_SWITCH

LOAD-

SL-

L D-DVD

RF O

ASDAT0

MA3

RESET#

SCL

IR

F

D

A

SL+

S UBC

R FOP

VSCK

ASDAT[0..2]

IOA

LDO2

DMO

ASDAT1

Y6

RAS#

MA8

A12

FMO

DAC VDD3

PCE#

RESET#

AVCC1

C D

T-

Y4

D Q7

CAS#

MA10

MA2

A9

A21

A16

FEO

SP-

DC LK

DQM[0..1]

A

TRO

TROPEN

TROUT

AR

D Q3

MA11

A14

SUBA

F OO

PCE#

SDA

RF O

B

F OSO

MA4

IO

A

AD7

A20

MDI2

STBY

LDO1

TRCLOSE

LOAD-

A

AD4

A5

MA0

VSTB

AD5

TRO

RF ON

A DIN

IN

T

0

#

VSTB

V1P4

ASPDIF

D CKE

PR D#

RAS#

Y[3..6]

A VCC

MDI1

TRSO

TRSO

APLLVD

D

3

D Q2

DQ13

MA9

MA7

SDA

A8

AD1

A13

V2P8

V REF

C S#

ALRCK

AR

RFV33

T RIN

DMSO

XI

AD3

ASPD

IF

DQ11

C S#

MA5

V1P4

MDI1

TEO

WE#

ACLK

SL+

GND

VSDA

SP+

D

A

CVDD3

ADACVD

D

3

RF

V

1

8

D Q9
DQ10

R

F

V

DD3

A11

A15

OP+

U

RD#

MUTE_DAC

V1P4

LD- CD

F

ADACVDD3

ASDAT2

JI

TFO

DQM0

D Q4

DQM1

A0

A10

DMO

T RIN

E

LDO2

LIMIT

VSCK

PLLVDD3

PWR#

A D[0..7]

PWR#

CAS#

MUTE_DAC

LOAD+

E

A3

ALR

C

K

Y3

XTAL

I

D Q5

D Q8

D CKE

RX

D

VS

D

A

F OO

V20

C

ALRCK

F+

RFVD D3

ABCK

LOAD+

SL-

V1P4

D

A

CVDD3

Y5

J

ITFN

BA1

ACLK

URS

T

#

PC

E

#

ALE

LDO1

R x D

SP-

A19

S CL

XO

D Q1

IC

E

TR

C

L

O

S

E

A17

AD0

A7

AD6

II_SCL

V2P8

S UBD

SUBB

B

VSDA

AL

SP+

XI

OP-

II_SDA

PLLVD

D

3

R

F

V

DD3

D Q6

D Q0

DQ14

MA6

TXD

VS

C

K

RGB_

S

W

IT

C

H

A6

TxD

APLLVDD3

AVCC1

V20
GND

AL

A4

V18

FS

0

UW

R

#

A1

P

RD#

PW

R

#

OPO

TROUT

V1P4

DMSO

V1P4

LIMIT

F-

OPO

II_SDA

F OSO

OP+

FMSO

RFV18

I R

JITFO

V1P4

RFVD D3

V20

ABCK

C D

II_SCL

XO

DV33

V18

LDO_AV33

MO_VCC

DV33

DV33

DV33

DV33

DV33

MO_VCC

DV33

AVCC

DV33

DV33

V18

DV33

MO_VCC

AVCC

RFV33

V18

ADACVDD3

V18

VCC

V18

VCC

DV33

AR

[5]

F S0

[4]

PWR#

[3]

PRD#

[3]

AVCC

[1 ]

CS#

[3]

PWR#

[3]

SCL

[3]

MUTE_DAC

[5]

DQ[0..15] [3]

ACLK

[5]

AL

[5]

ABCK

[5]

BA[0..1]

[3]

DCKE

[3]

MA[0..11]

[3]

Y[3..6]

[ 5 ]

ASPDIF

[4]

PCE#

[3]

DQM[0..1]

[3]

SDA

[3]

VSDA

PCE#

[3]

MUTE_DAC

[5]

AD[0..7]

[3]

DCLK

[3]

A[0..21]

[3]

ALRCK

[5]

WE#

[3]

VSCK

URST#

[1]

CAS#

[3]

RAS#

[3]

RGB_SWITCH [5]

ASDAT[0..2] [5]

RESET#

[5]

Title

Size

Document Number

R e v

Date:

Sheet

o f

MediaTek  Incorporation

RF&MEPG

4

COMMON89D_KHM310_V5

C

2

5

Thursday, June 24, 2004

C

MEMORY

3

2

2

S

IIC

VIDEO INTERFACE

1

FLASH

B

E

1

B

3

2

2SK3018

Very Important to
reduce Noise

D

E

2N3904

AUDIO INTERFACE

G

2SB1132

1

C

V1.7

3

RS-232

C

TP25

TP6

C

8

0

.1uF

L13
FB

TP12

R30

10

C40

330pF

C

1

3

0

.47uF/

N

.C

R

170

4.7

K

R

167

4.7

K

R33

10k

R1

6

8

4.7

K

L22

FB

TP15

CB26

0.1uF

TP46

TP34

C32

1uF

C19
6800PF

C37

C

+

CE19

47uF/16v 

R31

100k

R40

4.7

TP13

J4

5x1 W/HOUSING

1
2
3
4
5

J1

6x1 W/HOUSING

1
2
3
4
5
6

R42
10k

CB30

0.1uF

C41

0.1uF

TP16

C15

1000pF

TP42

CB15

0.1uF

+

CE10

10uF /25v

R39

0

R29
1k

CB19

0.1uF

CB28

0.1uF

TP38

C30

1uF

Q3

2

1

3

C29

1uF

C42

0.015uF

TP35

TP33

C1

6

1

000pF

R1

7

0

CB23

0.1uF

R19

1

TP32

L16

2.7u, DIP

C6

0.01uF

TP39

R35

100

CB32

0.1uF

R22

2K

CB14

0.1uF

C3

2200pF

TP47

CB18

0.1uF

R10
150k

TP9

CB10

0.1uF

TP5

TOP

HA1

HEADER 24 SMD0.5 TOP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

+

CE17
100uF/16v

R59

10k

TP19

C2

5

0.1uF

C12
1500pF

TP8

R9
150k

+

CE18
47uF/16v 

TP3

TP14

+

CE14

47uF /16v 

R16

100k

C39

330pF

TP50

CB13

0.1uF

Y1

C27MHz

1

2

TP18

+

C10

10uF /25v

C36

0.1uF

TP43

TP55

C35
100pF

TP40

R24
4.7k

R15

R

TP31

J2

6x1 W/HOUSING

1
2
3
4
5
6
7
8

Q2

2

1

3

R55

10k

R48

18k

R44
1

C2

390pF

R37

R

+

CE15

47uF/16v 

TP48

Q1

1

2

3

TP41

CB25

0.1uF

R38

R

U5

AM5668

VINFC

1

PVCC1

9

PGND

10

VOSL+

12

CF2

3

CF1

2

VOTK+

15

VNFFC

7

VOFC+

14

VOFC-

13

PVCC2

21

PGND

19

VNFTK

20

CTK2

24

BIAS

27

VOSL

6

VINSL+

4

VINSL-

5

STBY

28

VCC

8

VOSL-

11

VOLD+

17

VOLD-

18

VOTK-

16

VINLD

23

PREGND

22

CTK1

25

VINTK

26

G1

29

G2

30

R36

100

R54
20k

CB29

0.1uF

C4
0.1uF/N.C

C33

1uF

+

CE46
1000uF/16v

TP23

R11

680k

TP29

TP21

Q5

2SB1132

1

3

2

R43
1

R20

NC

CB16

0.1uF

TP22

TP45

+

CE11

10uF /25v

C45
0.1uF

CB21

0.1uF

R32

10k

R6

680k

TP54

C34

C

R25

0

R34

100k

CB17

0.1uF

TP17

CB33

0.1uF

L18

FB

R28

10

R1

2

1

5

k

L17

330uH

TP2

L20

10uH

C

2

1

0

.0

3

3uF

CB22

0.1uF

CB12

0.1uF

R50

10k

R46
1

CB27

0.1uF

C28

0.1uF

L19

FB

U3A

74HC04

1

2

14

7

R21

NC

L21

10uH

CB35

0.1uF

R41

4.7

C

2

2

0

.0

4

7uF

C31

1uF

CB31

0.1uF

R

8

100k

C26
27pF

TP4

R45
1

TP52

R47

20k

MT1389D

U4
MT1389D

DVDA

2

CRT

P

L

P

210

DVDB

3

DVDC

4

DVDD

5

AGND

1

OS

P

212

OS

N

213

DVDRFIP

6

DVDRFIN

7

MA

8

MB

9

MC

10

MD

11

SA

12

SB

13

SC

14

SD

15

CDFON

16

CDFOP

17

TNI

18

TPI

19

MDI1

20

MDI2

21

LDO2

22

LDO1

23

A

V

DD3

216

V2REFO

28

SGND

27

VREFO

30

V20

29

TEO

32

FEO

31

FG/ADIN1

43

RFLVL/RFON

26

CSO/RFOP

25

TEZISLV

33

OP_OUT

34

OP_INN

35

OP_INP

36

FOO

42

TRO

41

GPIO1

45

TROPENPWM

39

PWMOUT1/ADIN0

40

GPIO2

46

FMO

38

DMO

37

HI

GHA

4

65

HI

GHA

5

64

HI

GHA

7

62

DV

DD3

61

A1

6

60

IO

W

R

#

59

DV

DD3

58

IOA6

52

AD

6

81

AD

2

77

AD

1

76

IO

A1

8

55

D

VSS

74

IOOE

#

73

IO

A1

72

D

VSS

71

HI

GHA

6

63

AL

E

83

IOA7

53

HIGHA0

54

IO

C

S

#

70

IO

A1

9

57

IO

A2

1

82

AD

0

75

HI

GHA

3

66

HI

GHA

1

68

AD

5

80

IO

A2

0

69

D

VSS

56

HI

GHA

2

67

DV

DD18

84

AD

7

85

A1

7

86

DV

DD3

87

IO

A0

88

UWR#

89

URD#

90

UP

1_2

91

UP

1_3

92

GP

IO

6

93

UP

1_4

94

UP

1_5

95

IR

106

UP

1_6

96

D

VSS

97

A

DCV

DD3

204

AD

C

VSS

205

UP

1_7

98

UP

3_0

99

UP

3_1

100

UP

3_4

101

UP

3_5

102

GP

IO

7

103

IC

E

104

PR

ST

#

105

IN

T

0

#

107

DV

DD3

108

ACLK

162

ABCK

161

DVSS

160

GPIO5

159

GPIO4

158

GPIO3

157

DVDD18

156

RA4

155

RA5

154

RA6

153

RA7

152

DVDD3

151

RA8

150

RA9

149

RA11

148

CKE

147

RCLK

146

DVSS

145

RA3

144

DVSS

143

RA2

142

RA1

141

RA0

140

RA10

139

BA1

137

DVDD3

138

BA0

136

RCS#

135

RAS#

134

DVDD18

133

CAS#

132

RWE#

131

DVSS

130

DQM1

129

RD8

128

RD10

126

RD9

127

RD11

125

RD12

124

DVDD3

123

RD13

122

RD14

121

DVSS

120

RD0

118

RD15

119

RD1

117

RD2

116

DVSS

115

RD3

114

RD4

113

RD6

111

RD5

112

RD7

110

DQM0

109

H

R

FZC

209

IR

EF

215

SVDD3

24

RF

GC

214

RF

GND18

191

AD

AC

G

N

D

190

ID

AC

EXL

P

198

PL

L

VSS

197

RF

RP

A

C

208

RF

RP

DC

207

J

ITFN

196

RF

GND

211

RF

V

DD3

206

LP

FOP

203

LP

FI

P

201

LP

FI

N

202

LP

FON

200

P

LLV

DD3

199

XT

AL

I

194

J

ITFO

195

RF

V

DD18

192

APL

L

C

AP

184

APL

L

VSS

185

R

182

B

181

D

A

C

VSSA

180

G

179

AD

AC

VD

D

3

186

DA

CV

DDA

178

D

A

C

VSSB

177

C

VBS

175

FS

173

D

A

C

VSSC

174

ASD

AT

A0

164

DA

CV

DDC

171

SPD

IF

170

MC

_

D

ATA

169

DV

DD3

168

VR

EF

172

ASD

AT

A3

167

ASD

AT

A2

166

ASD

AT

A1

165

A

L

RCK

163

XT

AL

O

193

GPIO0

44

IOA2

47

DVDD18

48

IOA3

49

IOA4

50

IOA5

51

AD

3

78

AD

4

79

DA

CV

DDB

176

A

P

LLV

DD3

183

VC

M

188

AL

189

AR

187

R26

0

C24
0.1uF

R49

15k

+

CE16

100uF/16V

R23

10k

C11

10uF /10v

R173

10K

+

CE21

47uF /16v 

TP27

TP44

C14
2200pF

R13
6.8

R7

0

R174 100K

CB20

0.1uF

TP24

C9

20p

F

C38
0.1uF

C

2

3

0

.0

4

7uF

CB11

0.1uF

C

1

7

0

.1uF

R4
0

L14

FB

R14

0

+

CE13

47uF /16v 

U3B

74HC04

3

4

14

7

R5

750k

TP36

J3

4x1 W/HOUSING

1
2
3
4

TP53

TP26

TP28

C18
C

C5

0.1uF

TP11

TP37

R27

0

C7

2200pF

TP10

CB24

0.1uF

C

2

0

0

.1uF

R51

10k

TP49

+

CE12
100uF/16v

TP20

Q4

2SB1132

1

3

2

TP51

C27
27pF

TP30

L15

FB

Summary of Contents for A-5181

Page 1: ...SERVICE MANUAL Model A 5181 DVD PLAYER www akai ru...

Page 2: ...Caption Text captions for video which are not normally visible as opposed to open captions which are a permanent part of the picture In the United States the official NTSC Closed Caption standard req...

Page 3: ...em based on 12 and 8 cm optical discs 1 1 DVD R DVD Recordable defines a standard for recordable DVD drives and media defined by the DVDRW Alliance Often called plus R the format is write once compare...

Page 4: ...SACD can also be backward compatible using so called hybrid discs with an extra layer that allows them to be played on conventional CD players but then only with ordinary CD quality SACD can be played...

Page 5: ...audio unlike 1 2 D1 DVD that is the same resolution at 48khz audio Not all players will play CVD compatible players CVD Guide DivX DivX is a new format for digital video much like MP3 is a format for...

Page 6: ...ginal microphone feed on Compact Discs and DVD Audio HDCD has been used in the recording of more than 5 000 CD titles which include more than 250 Billboard Top 200 recordings and more than 175 GRAMMY...

Page 7: ...g in the operation and service manuals 2 Parts identified by the symbol in schematic diagram parts are critical for safety Replace only with specified part numbers Note Parts in this category also inc...

Page 8: ...parts and high voltage parts by its shape So these wires must be restored to its former state 10 After updated the hazardous live part or accessible part if the clearance or creepage distance cann t...

Page 9: ...en replacing primary circuit components confirm specified clearance distance d between soldered terminals and between terminals and surrounding metallic parts See table below Table 1 Ratings for selec...

Page 10: ...igure and following table Table 2 Leakage current ratings for selected areas AC Line Voltage Region Load Z Leakage Current i Earth Ground B to or 0 7mA peak or 2mA DC Antenna earth Terminals 100 to 13...

Page 11: ...rding c The upgrading software MTK BIN must be in root directory Recording mode must be ISO9660 MODE1 LEVEL1 DO NOT SELECT JOLIET LOOSEN ISOSTRICT 2 Load the disc 3 DVD will read disc and prompt upgra...

Page 12: ...near dB 60 4 1 1 11 Digital out level V Vp p 0 5 0 05 12 12 4 53 1 12 De bass function dB disc 784 13 13 9 04 1 DTS 0dB 1KHz output Level Amplitude Response under 0dB output level dB 20Hz 20KHz DOLBY...

Page 13: ...Chorma 880 176 32 S video signal amplitude Vp p load mV C channel Chroma Sync 300 60 Y channel 5 5 6dB 33 S video signal bandwidth and amplitude response MHz C channel 1 5 6dB Y channel 50 34 S video...

Page 14: ...Package Inbox and Block Diagrams 6 7 1 2 3 8 9 4 10 5 1 AV Cable 6 Owner s Manual bag 2 Batteries 7 Owner s Manual 3 Remote control 8 EPS 4 scart Cable 9 Power cord 5 Scart cable box 10 Color box 5 1...

Page 15: ...DVD Box Block Diagram 6 1...

Page 16: ...to decoder board correct Connect again Normal Y N Y KB board OK Y To decoder board service D1 N To KB board service K1 TV no voice Check audio wire between DVD player and TV N Connect DVD left right...

Page 17: ...SCART wire connection correct N 4 Y N Press v mode key of the REMOTE Press times normal N Y To decoder board service D3 D3 2 D3 3 Cannot open tray Loader too low high Adjust loader Check Loader signa...

Page 18: ...K3 Press Open Close on remote control the IR line of KB board has wave out To KB board service K2 To board service N N Y Y Disc scratched dirty Replace disc Check Loader wire connect to decoder board...

Page 19: ...N Y 7 Optical Coaxial output abnormal Audio setup correct Adjust according to manual instruction Check optical coaxial connection to decoder device OK Adjust according to manual instruction To decode...

Page 20: ...IC service M1 To MIC service M2 MIC self activated 12 Judgment standard for loader damage When below phenomenon exist the loader may be damaged 1 no spin 2 no laser 3 cannot open close tray normally 4...

Page 21: ...8 1 8 1 Power Board Block Diagram...

Page 22: ...470 1 4W FR154 100UF 25V 100UF 25V IN5822 1000UF 10V 10UH 10UH 2A 2 3 1 TL431 2200pF 250V R203 CY103 E201 E202 D204 D201 L201 L202 L203 E205 CX101 L101 CN101 CN102 NF1 R202 4 7K 1 4w D103 1N4007 D101...

Page 23: ...ams of electronic components 8 1 Reference waveform of key test point of power board TP1 12V no disc 3 mVpp TP1 reading disc 250mVpp TP2 5V no disc 3 mVpp TP2 5V reading disc 40mVpp TP3 idle 20Vpp TP3...

Page 24: ...average EMI minimizing filtering cost 1 Conversion from a c to d c circuit 220V a c current flows restrictively through F1 fuse and through D301 D304 to combine as bridge rectification After C1 L2 C2...

Page 25: ...ol pin 5 IC2 decreases or increases oscillation waveform will be regulated automatically so that T ratio will increase or decrease and the output voltage will increase or decrease Output voltage feedb...

Page 26: ...er the voltage of 1 pin IC VFF is equal to 2 8V Measure whether the voltage of 5 pin IC2 5 is equal to 6 3V Check whether C5 R2 D7 C4 R4 C6 are damaged Test whether the windings of T are short circuit...

Page 27: ...voltage of IC2 control pin normal There is damage in D1 D2 D3 D4 forming half wave rectification Is the voltage of C2at 320V Check D7 R2 Is it normal after replacing Z1 Abnormal Analyse heating eleme...

Page 28: ...udio 12V Digital 5V Audio DAC Servo 3 3V Audio 5V MT1389E VCC Digital 3 3V SDRAM RFV33 SD33 AVDD 1 INDEX POWER RESET MT1389E 4 VIDEO OUT SUPPLY 3 MEMORY SDRAM FLASH EEPROM V18 12V 12V Audio 12V OP AMP...

Page 29: ...5 10k R48 18k R44 1 C2 390pF R37 R CE15 47uF 16v TP48 Q1 1 2 3 TP41 CB25 0 1uF R38 R U5 AM5668 VINFC 1 PVCC1 9 PGND 10 VOSL 12 CF2 3 CF1 2 VOTK 15 VNFFC 7 VOFC 14 VOFC 13 PVCC2 21 PGND 19 VNFTK 20 CTK...

Page 30: ...LK 35 DQMH 36 NC 37 VCCQ 38 DQ8 39 DQ9 40 VSSQ 41 DQ10 42 DQ11 43 VCCQ 44 DQ12 45 DQ13 46 VSSQ 47 DQ14 48 DQ15 49 VSS 50 CB54 0 1uF C0603 CB37 0 1uF C0603 CB41 0 1uF C0603 U9 ESMT M12L64164A N C TSOP5...

Page 31: ...8 3906 R100 150 1 Q12 2N3904 1 2 3 R91 150 1 R79 75 1 R90 2 2k D19 1N4148 1 2 G G C Y P1 S VIDEO RCA 1 2 3 4 5 R73 39 1 R76 75 1 C50 47P R87 NC R96 75 1 D8 1N4148 1 2 R72 NC D5 1N4148 1 2 D2 1N4148 1...

Page 32: ...58 OPA 3 2 1 8 4 R134 10 0805 R158 110 D15 1N4148 1 2 CB69 0 1uF U15 WMA8766 MODE 1 MCLK 2 BCLK 3 LRC 4 DVDD 5 DGND 6 DIN1 7 DIN2 8 DIN3 9 DNC 10 ML I2S 11 MC IWL 12 MD DM 13 MUTE 14 TESTREF1 15 VREFN...

Page 33: ...8 8 13...

Page 34: ...8 14...

Page 35: ...8 15...

Page 36: ...l wave 5V 12V 12V 3 3V U2 1 8V U1 Check reset circuit reset at high electrical level Check crystal circuit 27MHz and SDRAM frequency 108MHz Decoder board repair flow chart Diagram not included 1 VFD n...

Page 37: ...setup software menu bad Set to CVBS yes good Check Q7 emitter voltage between 1 0 0 2VPP use standard color band signal disc to test yes no Check Q7 basal pole between 0 4 0 2VPP no remove Q7 check P...

Page 38: ...o setup to YUV no set to YUV ReplaceQ8 Q10 Q15 Check MT1389D PIN179 181 182short circuit Replace MT1389D IC yes yes Check Q8 Q10 Q15 emitter voltage between 0 7 0 14VPP no yes Check Q8 Q10 Q15 base po...

Page 39: ...VGA connect bad Connect correct Good Check DVD system PAL NTSC is the same as TV setting In VGA PAL line sync frequency is 31250Hz field sync frequency is 50Hz In VGA NTSC line sync frequency is 31500...

Page 40: ...art CVBS PIN167 voltage should be 0 0 4V in Scart RGB it should be 1 3V Check PIN167 voltage bad In Scart CVBS RGB SWITCH is 3 3V high in RGB it is 0V Check MT1389D PIN169 good Check RGB signal SCART...

Page 41: ...heck L39 surround left L40 surround right with sin wave 5 6V VPP load 1K signal disc check L41 center L42 subwoofer with sin wave 5 6V VPP A B C no yes Check DAC ML DAC MR with sin wave signal yes Rep...

Page 42: ...disc With disc Auto adjust Wait for order Servo initial work process Power On System initiated MT1389D reset and initiated wait for task Tray door close Close tray door no yes Pickup in inner circle...

Page 43: ...MTK DECODER Check disc Activate pickup Focus loop move up Focus loop move down Disc check error yes no Focus loop move up Focus loop move down Pickup LD off Initiate auto adjust Action repeat 8 23...

Page 44: ...age larger than3 0V connect multimeter black pen to LOAD red pen to LOAD Check P4 or P5 connection with loader yes no PIN103 TRCLOSE Check MT1389D PIN39 TROPEN Check TROPEN TRCLOSE signal level normal...

Page 45: ...8 Repair of key board 8 25...

Page 46: ...8 Repair of key board 8 26...

Page 47: ...ED HAS DISPLAY OK Check Power board and KB board connection Connect correctly Check KB board input power normal Make Power board under normal supply Check IC SM1694 LED work properly Check other compo...

Page 48: ...12V PHO401 E403 100uF 16V 1 2 MIC2 E401 10uF 16V 1 2 R403 22k C404 680pF L401 3 3uH C405 100pF R410 10k vr401 R VAR1 1 2 3 4 5 6 1 2 3 4 5 6 E404 10uF 16V 1 2 MIC1 12V 12V R417 10 E402 100uF 16V 1 2...

Page 49: ...n normal NO NO MIC board power supply normal When MIC has input IC 4558 Pin 1 to 7 has output Check Power board and Mic board connecting wires Replace IC4558 return normal Check decoder board NO NO NO...

Page 50: ...9 1...

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