SA SA AK500 Service Manual

C1BB00000654 (42P)
C2BBGF000323 (64P)
C2BBGF000325 (100P)
MN101C427MA2 (44P)
MN662790RSC (80P)
MN1933222MD2 (100P)

TC74HC4050EL (16P)
TC74HC157AFT (16P)

BA7755A

KTA12710YTA
KTC3205YTA
KTD1146YTA
2SB621ARSTA
2SD592AQRSTA
B1AAKD000009

C0AABB000117

2SK544F-AC



AN7348STA-E1 (24P)
AN8885SBE1 (28P)
BU2090AF-E2 (16P)
LA1833NMNTLM (24P)
LC72131MDTRM (20P)

0N2180RLC1

2

1

3

4

2

3

4

1

KRA102MTA
KRA110MTA
KRC102MTA
KRC103MTA

B

C

E

KTC2026

KTA1046

B

C

E

AN8739SBE2

SI8050JLF118

2SC2058SPTA

RSN35H2-P

1

14

18

C0JBAK000133 (16P)

BA033T

KRA102STA
KRC101STA
KRC102STA
KTC3875GRTA
KTD1304TA
2SA1037AKSTX
2SC2412KT96R
2SC2712GRT5T

TA7291P

1

10

C3BBHG000048 (44P)

C0JBAB000007

5

4

1

2

3

KRA111STA
UN5211TX

KTA1267GRTA
KTC3199GRTA
RVTDTC143EST
2SA933SSTA
2SC2786MTA
2SC2787FL1TA
2SD2144STA

SLI325URCT31
SLR325YCT31

SVC211SPA-AL

MA728TX

1SS355TE17
1SS380TE-17
UDZSTE1710B
UDZSTE173R1B
UDZSTE175R1B
UDZSTE177R5B

RVD1SS133TA
MA165TA
MA723TA

GP1S94

1D3E
RL1N4003N02

LNJ301MPUJAD

Anode

A

Cathode

Ca

EK14LFH2K

MTZJ4R7BTA
MTZJ5R6BTA
MTZJ6R6BTA
MTZJ10BTA
MTZJ15CTA
MTZJ16BTA
MTZJ33BTA

KBP152G4R5

DAP202KT146

KBU803-001

HCS

RST

HCLK

19

20

28

39

40

P02

P21

P27

MMOD

IC1001

MN101C427MA2

MP3 MICROPROCESSOR

HDIN

PIBE

/PCS

/PRE

ERROR

P66

P67

P01

OSCF0

34353637

14

P64

P65

OSC2

6

/CE

IC1002

C3BBHG000048

64K x 16M SDRAM

A15

A0

1~5,

42~44

24~27,

18~21

7~10,

I/O1

13~16

I/O16

29~32,

35~38

/WE

/OE

17

41

BCLK

HDOUT

LRCK 29

MP3DATA 43

BCLK 47

OSC

15

OSC1

18

P00

LED0

LED7

44~41

4~1

59~66

P0

GI2

TXD1

46

SCLK0

SCLK1

20

VCOIN

21

PCOUT

22

AVSS

23

VSS

P7

GI3

30

P20

P22

P60

P61

P62

P63

29

27

37

58

GO2

POBF

RXD0

44

32

30

31

17

27

163355

GI0

/RST

/STOP

IC1000

MN1933222MD2

MP3 DIGITAL SIGNAL PROCESSOR

/PWE

/SINH048/SINH1

49

95

/CS

96~99

AMD0

2~12,
35

AMD14,

GO0

DMD0

77~92

DMD15

OSCF0

GO1

PIBE

/PCS

/PRE

94

/DW

93

/DR

24

36

57

54

56

OSCFC0

ERROR

PIBE

/PCS

/PRE

+B

SINH

IC1005

C0JBAB000007

INVERTER

IBCLK

SINH

5

IC1004

C0JBAF000184

DUAL D FLIP FLOP

2CK

BCLK

2D

11

12

LRCK

24

1Q

2Q

1CK

1D

9

3

2

BCLK

SRDATA

Q1000

RESET

MP3LRCK

RESET

11

LRCK

3

IC1003

C0JBAK000133

RIPPLE-CARRY
BINARY COUNTER

Q5

CLOCK

10

BCLK

HDIN

HCS

HCLK

RST

2

4 6 10

1Y

2Y

3Y

4Y

1A

2A

3A

4A

IC801

TC74HC4050EL

HEX NON-INVERTING
BUFFER/LEVEL SHIFTER

3

5

7

9

TO MAIN

BLOCK

MP3RST

MP3CLK

MP3HCS

MP3DIN

P

TO MAIN

E

BLOCK

OPTICAL PICKUP

SEMICONDUCTOR

LASER

+B

PHOTO DETECTOR

E

D
A

D

F F

BDO

VCC

VREF

VREF

+B

CSBRT

OFTR

3TENV

OFTR

CEA

ENV

/RFDET

FEN

-

FEOUT

+

TEN

-

TEOUT

+

OFTR

17

11

+B

19

ENV

/RFDET

15

25

24

FE

22

23

TE

+B

VREF

26

+B

­+

IC701

AN8885SBE1

SERVO AMP

LPD

6

Q701

LASER

POWER DRIVE

+B

E

C
B

C

LD

7

PDA

4

PDB

5

PDE

1

PDF

2

-

+

AMP

AMP

AMP

AMP

8 9 1012

RF

RFEQ1

RFEQ2

GCA

GCA

GCA

GCA

RFIN

BCA

BCA

BCA

BCA

BDO

BDO

NRFDET

SUBTRACTOR

SUBTRACTOR

BAND

GAP

FOCUS

COIL

TRACKING

COIL

NC

LDON

LDON

F-

F+

T-

T+

M701

TRAVERSE

MOTOR

SPINDLE

MOTOR

M

M702

M

D4+

18

17

D4-

D3+

16

15

D3-

D1+

12

11

D1-

D2+

14

13

D2-

NC

202013

RESET

SIGNAL

GEN.

FOCUS

COIL

DRIVE

TRACKING

COIL

DRIVE

TRAVERSE

MOTOR

DRIVE

SPINDLE

MOTOR

DRIVE

FBAL

TBAL

2827 16 18

FBAL

TBAL

1

/RST

26

IN3

25

IN4

6

IN1

3

IN2

4

PC2

PDOWN

NC

TRD

FOD

TVD

ECS
ECM

PC

IC703

AN8739SBE2

FOCUS COIL/
TRACKING COIL/
TRAVERSE MOTOR/
SPINDLE MOTOR DRIVE

BDO

/RFDET

ENV

FE

TE

OFTR

TBAL
FBAL

LDON

+B

44

69

39

38

34

32

33

36

37

35

31

30

40

41

29

42

ARF

RESY

BDO

/RFDET

RFENV

FE

TE

OFTR

TRCRS

VDET

TBAL

FBAL

LDON

PLLF2

VREF

DSLF2

4947

46

DRF

DSLF

VCOF

DSL

SYNCHRONIZING

PROTECTION

SERVO
INPUT

PORT

A/D

CONVERTER

D/A

CONVERTER

+B

45

IREF

PHASE

COMPARATOR

48

PLLF

FREQUENCY

COMPARATOR

VCO

SYNCHRONIZING

INTERPOLATION

PROTECTION

RAM

ADDRESS

GENERATOR

CLV

SERVO

SERVO

CPU

SERVO

OUTPUT

PORT

EFM DATA

DEMODULATOR

16K

SRAM

PEAK

DETECTOR/

AUTO CUE

SUB-CODE

DEMODULATOR

CRCC CHECK

Q-CODE

REGISTER

IC702

MN662790RSC

SERVO PROCESSOR/
DIGITAL SIGNAL PROCESSOR/
DIGITAL FITLER/
D/A CONVERTER

SYNDROME

CALCULATION

CIRC

DECODER

INTERPOLATION/

SOFT-MUTING/

DIGITAL
ATTENUATION/
PEAK DETECT/

AUTO CUE

DIGITAL AUDIO

INTERFACE

DIGITAL

DE-EMPHASIS

CONVERTER

MICROCOMPUTER

INTERFACE

S/P

AMPLING

8 TIMES OVER

DIGITAL FILTER

PWM

LOGIC

MASH LOGICS

PWM

LOGIC

TIMING GENERATOR/

PITCH CONTROL

+

-

+

-

OUTL

OUTR

BCLK
LRCK

IPFLAG

SRDATA

SUBC

SBCK

/CLDCK

PSEL

SSEL

MSEL

BLKCK

FCLK

EFM

TX

6

73

CD SIGNAL

75

1

2
64

3
55

56
62

78

80

79

13

63

52

RCH

FOD

TRD

27 28 22

FOD

TRD

TVD

ECS

25

ECS

TVD

KICK

TRV

ECM

26 21 24 10 1123

ECM

SENSE

/FLOCK

PC

PC

/TLOCK

12 14 1516

DMUTE

SQCK

CSQCK

SUBQ

SUBQ

18

/RST

CDRST

STAT

17 8

/CDSTAT

MDATA

MCLK

MLD

7 9

MCLK

CMDATA

CMLD

SMCK

CSEL

20 19 58

X1 IN59X2 OUT

X701

BLKCK

DISCK

TO MAIN

CDSCK

LRCK

BLOCK

E

SRDATA

SBCK

DIDATA

DILRCK

FM ANT

AM ANT

Z120

Q1

1

RF AMP

5

MIXER

Q3

(FM)

OSC

6

Q2

Q4

BUFFER

8

+B

CF201

7

Q101
FM

IF AMP

CF202

AM
ANT
COIL

Z101

AM
OSC
COIL

(FM)

+B

RCH

PHASE

DET

VCO

FF FF

DECODER

STEREO
SWITCH

1316 15 14

PILOT

CANCEL

PILOT

FF

DET

24 23 22

ALC

BUFFER

LEVEL

DET
FM

IF

1 2 3

IC101

LA1833NMNTLM

FM/AM IF AMP DET
/AM OSC MIX
/FM MPX

16

17

18

11

PHASE DETECTOR

CHARGE PUMP

UNLOCK

DETECTOR

REFERENCE

DIVIDER

SWALLOW COUNTER

1/6,1/17,4 BITS

12 BITS PROGRAMMABLE

DIVIDER

FM

DET

1
2

AM

OSC

S-CURVE

REG

AM
IFT

Z102

21 20 19 18

AM

AM

RM AMP

MIX

AGC

AM

IF

AM/FM

IF

BUFFER

4 5 6 7

COMP

TUNING

DRIVE

SD

17

AM

DET

X102

REG

98 10 11 12

+B

ST/DO

SD

ST

X103

1

20

14

12

13

UNIVERSAL

COUNTER

15

+B

Q106
TUNER

+B

SUPPLY
SWITCH

+B

(FM)

POWER ON

RESET

19

SHIFT REGISTER LATCH

12710 96 8

IC102

LC72131MDTRM

PLL FREQUENCY SYNTHESIZER

C2B

I/F

52DO

CE

3DI

4

CL

ST/DO

CE

DI

CL

E

+B

P

TO MP3

BLOCK

+B

CDRST

MP3HCS
MP3CLK
MP3DIN

HDOUT

/CDSTAT

CMLD
CMDATA
MCLK

BLKCK

SUBQ

CSQCK

MP3RST

SBCK
LRCK

IBCLK
CDSCK
DIDATA

CDDATA

DILRCK
DISCK
MP3LRCK

MP3DATA

ST/DO

SD

CE

DI

CL

S701

Q315

SWITCH

Q305

INTERFACE

Q303

INTERFACE

Q304

INTERFACE

IC802

TC74HC157AFT

MP3 MODULE

12

3
5
6
9

10

31

28

27

Q306

INTERFACE

13

PLLCE

PLLDA

PLLCLK

SD

62

63

49
50
51

52

53

54
55
56

17

11

9

48

1
11

2
7
4

12

ST/DO/SQCLK

CRESTSW

CDRST

MP3HCS
MP3CLK
MP3DOUT

MP3DIN

CCDSTAT

CMLD
CMDATA
CMCLK

BLKCK

SUBQ

CSQCK

MP3RST

SW5

SW4

19

37

RST

MM_RST

D801

4

Q311

5

CLAMP

BOTTOMSW

D802

SWITCH

6

POSITION

IC800

C2BBGF000323

MICROPROCESSOR

SDATA_O

SDATA_T

23 22

14

Q312

SWITCH

D626

D625

Q613

PCONT

SWITCH

91

MM_DOUT

C2BBGF000325

XOUT

Q614

X600

PCONT

SWITCH

90

CHG_PLGR

XIN

Q310

MM_DIN

CHG_CW

CHG_CCW

CHG_HALF

CHG_SW1

CHG_SW2

OPEN

S_CLK

S_CS

S_REQ

DACSEL

CDPCNT

2515

SWITCH

28

29

26

SW1

1

SW2

2

SW3

3

27

13

12

16

60

MICROPROCESSOR

IC600

Q1

POWER

SUPPLY

CONTROL

Q314

SWITCH

93

MM_REQ

IC1

TA7291P

MOTOR DRIVE

8

Vs

+B

2

IN1

5

6

IN2

REG

Vref

Vcc

GND

7

1

Q302

+B

CD MOTOR

SUPPLY
SWITCH

Q301

PLUNGER

MOTOR

SUPPLY

CONTROL

SWITCH

Q318 Q317 Q319

CD SUPPLY

CONTROL

Q612

VREF
SUPPLY
SWITCH

4

D2

+B

Q316

SWITCH

92

94

MM_CS

MM_CLK

OUT1
OUT2

+B

SWITCH

IC804

SI8050JLF118

VOLTAGE
REGULATOR

IC803

BA033T

VOLTAGE
REGULATOR

10

CD SUPPLY

SWITCH

+B

RM1

M

V_JOG_A

30

34

VR600

JOG VOL

V_JOG_B

MBP2

26 25

OSCILLATOR

SWITCH

Q603,Q604

MBP1

23 22

XOUT

XIN

X601

(DECK 1)

P.B. HEAD

(DECK 2)

R/P HEAD

Z1002

LCH

LCH

S953

D951

(CRO2)

SOLENOID

S951

(MODE)

4

(DECK 2)

ERASE HEAD

2

IC1004

BA7755A

R/P SELECT

S952

(HALF)

3

Q1017

MOTOR
SWITCH

M

MOTOR

Q1019

PLUNGER

ON/OFF

SWITCH

IC971

0N2180RLC1

(DECK 2)

PHOTO

INTERRUPTER

PHOTOCURRENT

AMPLIFIER

Q1008,Q1009 Q1010,Q1011

INTERFACE

100

DECK 1

24(23)

1(2)
22(3)
21(4)

17(8)

REC:ON/

BEAT PROOF

SWITCHING
Q1001,Q1003

Q1023

1M

13

BP1

7

1PL

15

IC951

0N2180RLC1

(DECK 1)

PHOTO

INTERRUPTER

PHOTOCURRENT

AMPLIFIER

6

19

15

IC1002

BU2090AF-E2

I/O EXPANDER

IC1001

AN7348STA-E1

P.B. EQ /TPS AMP
REC AMP/ALC

+

-

LOGIC L/H

ALC

NOR/CrO &

HI/LO LOGIC

RIPPLE

LOGIC

REJECTION

REC/PB

9 11

Q1022

+B

L1002

Q1004~Q1005,

LATCH

OUTPUT BUFFER

DATA

CR02

CONTROL

CIRCUIT

REGISTER

12-BIT SHIFT

BIAS OSC
CONTROL

Q1007

CLK

REC

1H

2PL

Q1012(Q1013)

MUTING

20(5)

18(7)

10

16

14

13

2

3

11

12

10

8

Q1018

PLUNGER

ON/OFF

SWITCH

S971

(MODE)

SOLENOID

S972

14

Z971

S973

(HALF)

INTERFACE

(CRO2)

1

(Q1015)

(Q1021)

D971

S974

DECK2

Q1014

BUFFER

AMP

Q1020

FILTER

AMP

Q1016

DECK
MUTING
SWITCH

S975

(RECINH_R)

(RECINH_F)

SER1

96

SER1

6

SER4

XCOUT

19 20

X600

XCIN

D404

(D204)

10(11)

C2BBGF000325

LM_L(R)

D405

(D205)

MICROPROCESSOR

IC600

Q401(Q201)

LEVEL

DETECTOR

SWITCH

REG7/GRID7

82~88

FL DISPLAY

REG1/GRID1

FL600

SEG38

44~81

SEG1/REG8

FROM POWER

TRANSFORMER

CD SIGNAL

AUX

JK305

4(39)

5(38)

6(37)

3(40)

IN1B(2B)

IN1C(2C)

IN1D(2D)

IN1A(2A)

17(26)

18(25)

VOL IN1(2)

VSEL OUTB1(2)

IC300

C1BB00000654

AUDIO SOUND PROCESSOR

VOL OUT1(2)

IC302

19

(24)

C0AABB000117

HP

AMP

D402(D202)

Q307

AUDIO

MUTING

CONTROL

SWITCH

Q402(Q202)

CONTROL

AGC

Q407(Q207)

HEADPHONE

MUTING
SWITCH

MUTING
SWITCH

Q403,
Q203

HP_L(R)

MUTEA

REC_C1(C2)

9

(34)

SER2

Q608~Q611

LED

DRIVE

SWITCH

95

SER2

35,42

Q616

LED_1

9

SWITCH

36,43

LED_4

SSEQ_LED

20

Q320

VOLTAGE

+B

REGULATOR

D311

+B

+B

VCC

C2BBGF000325

21

SER1

Q600

DATA

18

POWER

RESET

SWITCH

/RESET

D617

CLOCK

22

SER2

MICROPROCESSOR

IC600

15

29

Z600

REMOTE
SENSOR

MUTE_A

RMT

16

MUTE_H

KEY SW

KEY3

MUTEH

DCDET

D619

D618

MUTEA

SYNC

MUTEH

HP_L(R)

+B

2~4

KEY1

DCDET

SYNC

PCONT

D302~D304

Q510,Q511

DC

33

32

41

DETECT
SWITCH

DCDET

SYNC

SIGNAL LINES

MAIN SIGNAL LINE
FM OSC SIGNAL LINE
FM SIGNAL LINE

( ) INDICATES THE PIN NO. OF THE RIGHT CHANNEL

CD SIGNAL LINE

AM OSC SIGNAL LINE
MP3 SIGNAL LINE

AM SIGNAL LINE
FM & AM SIGNALS LINE

CD-DA (AUDIO/VIDEO) SIGNAL LINE

PLAYBACK SIGNAL LINE
RECORDING SIGNAL LINE

AUX SIGNAL LINE

+B

-B

(2)

(+VCC)

OUT_L(OUT_R)

4(1)

3

-VCC

7

MUTEC

JK601

HEADPHONE

RCH

IC500

RSN35H2-P

HIC

Q507

CD ON/OFF

SUPPLY
SWITCH

Q509

VOLTAGE

STABILISER

+

-

Q506

VOLTAGE

REGULATOR

Q601

PCONT

SWITCH

+IN_L(

-IN_L(

IN_R)
IN_R)

LATCH

-VCCN

ACDET

+B

Q508

CURRENT
CONTROL

SWITCH

+B

11(13)
10(14)

5

8

6

Q602

DECK
SUPPLY
SWITCH

+B

D507

HPF

FREQ AMP

SWITCH

Q404(Q204)

Q512

HEADPHONE

MUTING
SWITCH

Q605

SYNC

DETECTOR

SWITCH

D510,D511

Q615

VREF
SUPPLY
SWITCH

+B

D509,D513

REGULATOR

D611

+B

Q500

VOLTAGE

+B

(2)

(+VCC)

+B

+IN_L(

IN_R)

OUT_L(OUT_R)

4(1)

3

-VCC

-B

5

LATCH

8

-VCCN

6

ACDET

IC501

RSN35H2-P

HIC

+

-

-IN_L(

IN_R)

MUTEC

11(13)
10(14)

7

Q370~Q375

SWITCH

(FAN ON/OFF)

LPF

FREQ AMP

SWITCH

Q405(Q205)

+

LCH

-

+

LCH

-

JK952

LOW CH

(6 Ω)

JK951

HIGH CH

(6 Ω)

M

FAN

MOTOR

Q503

CURRENT

STABILISER

SWITCH

+B

Q505

VOLTAGE

REGULATOR

+B +B

+B

Q502

VOLTAGE

REGULATOR

+B

-B

Q513

CURRENT
CONTROL

SWITCH

Q951

VOLTAGE

REGULATOR

Q501

VOLTAGE

SUPPLY

SWITCH

+B

D957

FL DISPLAY

CURRENT
LIMITTING

SWITCH

D959

D960

D955,D956

TO

Q504

D950,D951,

RL950

D953,D954

F1

SUB

TRANS-

FORMER

T951

JK950

AC INLET

Q950

VOLTAGE

+B

REGULATOR

T950

FP950

-B

MAIN TRANSFORMER

+B

FP951

E500

Q953

PCONT
SWITCH