Akai PDX-4780 Service manual

A

VREF

C11

C10

C26
102

R28

82

C100 104

39uH

R60

D7
1N4001

C53

47uF

R23
1K

SWCHARGE

+

C23

47uF

DVCC

+

100K

R109 10K

104

C16
333

C28
C29
C31

C34

47uF

VREF

R83

100K

C105

R75

105

2.7K

C85

105

C151
224

LED1

RED LED

Q15

R11
22

4 4

SVCC

R20
22

Q4
2SA1576

J4

1

LD

2

GND

3

PD

4

3 3

VR

R44 47K

5

D

R42 47K

6

A

R43 47K

7

C

R45 47K

8

B

R39 82K

9

F

10

VC

11

SVCC

12

GND

R41 82

13

E

14

NC

15

FCS-

16

TRK-

17

TRK+

18

FCS+

DA50

SL-

6

SL+

5

LIMSW

4
3

SP+

2

SP-

1

CN2
CON6P

1N4148

D6

Q5

2 2

2SA1585SR

L1

D1
RB100A

R50
47

BATT+

J3

DCJACK

1 1

BATT-

C12

104

102

100K

R10

R12
47K

102
102
103

+

34
35
36
37
38
39
40
41
42
43
44

R51
100K

C54
102

3904

C108
473

R34

RST#OUT
EMP
HVCC
PWM
CLKIN
START
OFF
ADPVCC
EMPSET
PGND
FIL

R125

1K

C19

C99

4.7K
R37
1K

12345

37
38
39
40
41
42
43
44
45
46
47
48

CH1(-)

CHGSET

OVP

BATT

C62
104

C70
104

104

LD
PD
PDAC
PDBD
PDF
PDE
DCB
MCP
DCCI
DCCO
VREF
EQC

4P

R35

CH1(+)

RSTOUT

RESET

C40

CH2(-)

CH2(+)

DEDSET

BDSW

+

C71

220uF

C36
682

8.2K

PGND

CH3(+)

ERRI

ERRO

7891011

6

R52 22K

C61 332

C65

R57

R7
56K

C14

R13

36

LPFT

ATSC

RFM

RFO

12345

8P

CH3(-)

CH4(+)

SCP

COSCNCOP(-)

C57

+

1uF

102

100

R4

R5

R8

104
82K

GND

TEIO

TZC&SSTOP

IC3
S1L9226

EQI

EQO

EFMI

C39
821

C52

2324252627282930313233

BRK1

CH4(-)

MUTE2

MUTE34

SVCC2
OPOUT

SVCC1

C60

470P

Q9
2SD1664

180K

39K

120K

FEO

FEM

FRSH

VCC

7891011

6

+

C38 4.7uF

104

CH1IN
CH2IN
CH4IN

CH3IN

VREF
OP(+)

+

IuF

1 3

L4

TEO

FSET

C41
104

C80

C9 683

SLP

TEM

FLB

FGD

C42
104

IC5
FAN8038

22
21
20
19
18
17
16
15
14
13
12

R54

1.8K

CY68-83

R1

C2

R6
15K

103

C15

62K

R15

SLM

TGU

C43
102

LOCK

WDCK
RESET
MDATA

ISTAT

1.2K

C66

47P

R21 30K

24

SPO

23

SPM

22

ASY

21

EFM

20
19
18

CLVI

XRST

17

MLT

16

MLT

MRD#/MDT

15

MWR#/MCK

14

MCK

SSPSENS

13

VREF

C49 47uF

C44

R38

104

10K

C51
104

Q13

2SA1576

Q8

2SD1664

R56
IK

10

R58

C69

2526272829303132333435

SLO

FSI

12

R53

2

DIGITAL GND SERVO GND AUDIO GND

A

B

FEO
TEO

DVCC

VREF

10uF

C1

+

SLO
SPO

103

C21

R22
10K

474

C24

R24
10K

R17 1K

EFMI

D10

DOPTINCOM0

1N4148

COM3

COM4

SEG1
SEG3

+

C68A
47uF

SLO

SPO

FEO

TEO

VREF

1.8V

D3

+

+

47uF

AVCC

C56

L3

C67

220uF

+

1N4148

C98

104

SVCC

10uH

C68

+

220uF

C59
104

L2

39uH

C118
104

C118

104

10uH

L4

C3
47uF

B

1N4148

D3

RMC/KEY

D111N4148

D121N4148

D51N4148

D81N4148

D2
1N4148

D3

PLAY1

V-UP1

RK62
560

V-DN1

R84

2.7K

R85

2.7K

1N4148

R62
390

ESP1

RK54
STOP1

RK55
BACK1

RK56
NEXT1

DVCC

R86

2.7K

390

560

680

47K

683

+

SVCC

22K

R46

22K

R47

22K

R48

22K

R49

104

C

1

2

HOLD

3

HOLD

CLOSE

DOOR

RMC/HOLD

41

P4.7/INT11

42

P5.0/SCK

43

P5.1/SI

44

P5.2/SO

45

RMC/HOLD

C13

104

LCD1
LCD28P

P5.3/BUZ

46

P5.4

47

P5.5

DOPTIN

48

P5.6

49

VLC1

50

VSS2

51

VDD2

52

COM0

53

COM1

54

COM2

55

COM3

56

COM4

57

COM5

58

COM6

59

COM7

60

SEG0

COM4

COM0

COM3

COM2

COM1

123456789101112131415161718192021222324252627

COM0

COM1

COM2

COM3

COM4

C

40

P4.6/INT10

SEG1

6162636465666768697071

SEG0

COM7

SEG1

COM6

COM5

SEG0

SEG1

COM5

COM6

COM7

HPMUTE

AMUTE

P4.4/INT8

P4.5/INT9

SEG2

SEG3

SEG3

SEG2

SEG2

SEG3

HOLD

POFF

P4.3/INT7

SEG4

SEG4

SEG5

SEG4

LIMSW

CLOSE

P4.1/INT5

P4.2/INT6

SEG5

SEG6

SEG7

SEG6

SEG5

SEG6

P4.0/INT4

IC6
S3C825A

SEG7

SEG7

821

C18

DVCC

1

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25 26

D0
D1
WE
RAS

A10
A0
A1
A2
A3

C86

104

DSPSENS

MLT

SSPSENS

21222324252627282930313233343536373839

AVREF

P2.5/INT1

P2.6/INT2

P2.7/INT3

P3.0/ADC0

P2.4/INT0

RESET#

XTOUT

SEG16

SEG17

SEG18

SEG19

P1.0

SEG19

SEG18

SEG17

28

SEG16

SEG17

SEG18

SEG19

VDD

2

DQ0

3

DQ1

4

VSSQ

5

DQ2

6

DQ3

7

VDDQ

8

DQ4

9

DQ5
VSSQ
DQ6
DQ7
VDDQ
LDQM
WE#
CAS#
RAS#
CS#
BA
A10/AP
A0
A1
A2
A3
VDD VSS

10
11
12 13

P2.3
P2.2

XTIN

TEST

XIN
XOUT
VSS1
VDD1

P2.1
P2.0
P1.7
P1.6
P1.5
P1.4
P1.3
P1.2
P1.1

D0
D1

D2
D3

D4
D5

D6
D7 D0

LDQM
WE#
CAS#
RAS#

BA0
A10
A0
A1
A2
A3

C84

104

DVCC

KEY1

REM

KEY0

XRST

BATTL

P3.4

P3.5

P3.6

P3.7

AVSS

P3.1/ADC1

P3.2/ADC2

P3.3/ADC3

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

727374757677787980

SEG9

SEG8

SEG14

SEG12

SEG11

SEG13

SEG10

SEG16

SEG15

SEG8

SEG9

SEG10

SEG11

SEG12

SEG13

SEG14

SEG15

D

50

VSS

49

DQ15

48

DQ14

47

VSSQ

46

DQ13

45

DQ12

44

VDDQ

43

DQ11

IC1 SDRAM16M

42

DQ10

41

VSSQ

40

DQ9

39

DQ8

38

VDDQ

37

N.C/RFU

36

UDQM

35

CLK

34

CKE

33

N.C

32

A9

31

A8

30

A7

29

A6

28

A5

27

A4

DVCC

1

VCC
D0
D1
WE#

CAS#
RAS#
NC

A10
A0
A1
A2
A3
VCC VSS

EDO:4X4M

IC7

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

CC1 104

AVCC

VSS

D3
D2

OE#

A9
A8

A7
A6
A5
A4

R61
47K

DECINT
MRD#/MDT
MWR#/MCK

MCS#
MADDR#
MD7
MD6
MD5
MD4
MD3
MD2
MD1

MD0

2
3
4
5
6

7
8
9

PHX-200

D

CA1

24
23
22
21
20
19

18
17
16
15
14

X2
8MHz

2

DVCC

OPEN

13

米字

C81

D7
D6

D5
D4

D3
D2

D1

UDQM
RMCK
CKE

A9
A8
A7
A6
A5
A4

D3
D2
CAS

A9
A8

A7
A6
A5
A4

1.8V

104

UDQM
RMCK
CKE

A11
A9
A8
A7

MP3

E

R3

C7

Q10

4.7uF

C20

R2 2.2K

R14 2.2K

R32
1M

SBCK

WFCK

ADDR1

ADDR0

A0

10
9
8
7

C47
47uF

A10

SDAT

IC7
S5L9279

ADDR10

C101

+

+

DSPSENS

EFMI

ISTAT

MCLK/C4M

BA1

BA0

RAS#

BA1

BA0

R104 1K

R105 1K

R55

5.6K

+

XRST

EFMI

RESET

RAS#

CAS#

CAS#

C22

1uF

HPMUTE

INTVSS2

DRW#

WE#

+

+

C102 1uF

C35 220uF

C50
220uF

OPEN
C4

R59 1M

XOUT

INTVDD2

LDQM

INTVDD0

LDQM

9226/9279/BASIC

Q12

AVCC

DTA124EUA

1K

R4

AMUTE

+

C105

4.7uF

R16 100K

R19 100K

R18

5.6K

IC4

LS7000

1

P/SW

M/SW

2

IN1

OUT1

3

GND

GND

4

IN2

OUT2

5 6

REF VCC

47K

R36

AVCC

+

C46
47uF

R113

1K

C150
224P

C33 474

R31

10K

R27

C32

333

C62122

C61122

C60122

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

C547uF

C5647uF

+

+

R111 47

线控

18K

R33
39K

5.6K

R26

S0S1

LOCK

SMEF

SMDP

SMDS

SMON

WDCK

VCO1LF
PLLVDDA
VCO2LF
PLLVSSA
FIN
DACVDDD
DACVSSD
DACVSSA
RCHOUT
DACVREF
DACVDDA
DACHALF
LCHOUT
TEST0
TEST1
TEST2
TEST3
UDQM
XSCLK
CKE
ADDR12
ADDR11
ADDR9
ADDR8
ADDR7

ADDR6

ADDR5

ADDR4

ADDR3

PADVDD0

PADVSS0

ADDR2

26272829303132333435363738394041424344454647484950

C647uF

+

A1

A2

A4

A3

A6

A5

DVCC

C88 104

Title

Size Document Number Rev

Date: Sheet of

4.7uF

C126

103P

C125

103P

1.8V

XIN

MNT5

INTVSS0

DB3

D3

DTC114TUA

Q11

DTC114TUA

+

R30
470

R40
470

+

C114

104

MNT3

MNT4

DB2

DB1

D0

D2

D1

E

MNT2

DB0

MNT1

DB7

D7

390K

C37
104

C48
104

RMC/DATA

RMC/KEY
RMC/HOLD

C8 OPEN

X1

16.9344MHz

767778798081828384858687888990919293949596979899100

MNT0

RFCK

DEMAND

PCMCS#
PADVSS1
PADVDD1

HIFSEL
MDATA7
MDATA6
MDATA5
MDATA4
INTVSS1
INTVDD1
MDATA3
MDATA2
MDATA1
MDATA0

MADDR#

MWE#

DECINT

FRAMSYNC

DB6

DB5

D5

D6

C2PO
DATX

LKFS

MRD#
MCS#

102

R107
390K

DB4

J1

1
2

3

LINEOUT

C103
102

J2

3
2

1
4

5
6
7

PHONES

DVCC

75
74
73
72
71
70
69
68

MD7

67

MD6

66

MD5

65

MD4

64
63
62

MD3

61

MD2

60

MD1

59

MD0

58

MADDR#

57

MRD#/MDT

56

MWR#/MCK

55

MCS#

54

DECINT

53
52
51

D4

11

C115 104

C63 104

1.8V