Pioneer MA-990 Service Manual

MIC.MIXER

MA-990

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

Type

NY AC230V

Model

MA-990

Power Requirement Remarks

ORDER NO.

TRT1121

CONTENTS

1. EXPLODED VIEWS AND PARTS LIST................ 2

2. SCHEMATIC DIAGRAM ....................................... 4

3. PCB CONNECTION DIAGRAM.......................... 10

4. PCB PARTS LIST ............................................... 16

5. IC INFORMATION ............................................. 18

6. PANEL FACILITIES AND SPECIFICATIONS. 21

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan

PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923

c

PIONEER ELECTRONIC CORPORATION 1997

O - IZC DEC. 1997 Printed in Japan

MA-990

1. EXPLODED VIEWS AND PARTS LIST

NOTES:• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.

PARTS LIST

•

Mark No. Description Part No.

NSP 3 VOLUME BOARD Assy MWX1078 NSP 4 POWER SWITCH BOARD Assy MWX1076

The mark found on some component parts indicates the importance of the safety factor of the part.

•

Therefore, when replacing, be sure to use parts of identical designation.

Screws adjacent to mark on the product are used for disassembly.

•

PACKING

•

1 MAIN BOARD Assy MWX1079 2 FRONT BOARD Assy MWX1077

5 Cord Stopper MNK1183

6 AC Power Cord PDG1003

7 • • • • • NSP 8 Chassis MNA3012 9 Power Transformer MTT1016

10 Bonnet MNA3013 11 Rear Panel MNA1114

12 Panel Assy MXA1043 13 Name Plate VAM1032 14 Indicator B RNK1385 15 Lens MNK3080

16 • • • • • 17 Power Button MNK3081 18 Button MNK3082 19 Rotary Knob (A) RAC1861 20 Insulator Assy AMR2140

NSP 21 Angle MNA3016

22 Packing Case MHG1190

NSP 23 Power Holder MNA3017

24 Protector MHA3012 25 Sheet MHL3013

26 Operating Instructions MRB1025

(English/French/Spanish) 27 Connection Cord (AUDIO) MDE1050 28 Cover MNG3008 29 Screw BBZ30P060FZK

30 Screw BBZ40P060FZK 31 • • • • • 32 Display Panel MAH1015 33 Screw ATZ30P080FMC 34 • • • • •

24

25

37

27

40

26

43

24

22

35 Screw BBZ30P100FZK 36 Screw BBZ30P060FMC 37 Pad MHA3013 38 • • • • • 39 Panel MNK1196

40 Poly Bag PO230×340×0.05A 41 Connector MDF1024 42 Connector MDF1019 43 Warranty Card ARY7008

2

EXPLODED VIEW

•

MA-990

41

42

3

1

01

D2

76

S

ss

29

+

23

MA-990

3.SCHEMATIC DIAGRAM

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".

A

JA402

MKN1017

L

LD

R

JA401 (1/2)

MKN1024

L

VCR

R

JA401 (2/2)

MKN1024

L

TAPE

R

JA501

MKN3005

B

JA502

MKN3006

JA503

MKN3005

JA504

MKN3005

C

D

MAIN BOARD ASSY (MWX1079)

A

1

R401

C401

1k

2 3

1

2 3

4

6 5

330P

R402

C402

1k

330P C403

R403

330P

1k

R404

C404

1k

330P

R405

C405

1k

330P

R406

C406

1k

330P

R501 470

2 4

C503 2200P

1

AG AG

AG

C501

C502

0.01

FG

6

5

4

J501 0

2

3

7

8

9

1

FG FG R511

470

2 4

C511 2200P

1

AG AG AG

R517 470

2 4

C517 2200P

1

AGFGAG AG

C550

0.01

AG

C504

4.7/50

+

R502 56k

C505 10/50

VCC

DG1

R507 10k

C509

0.01

C512

4.7/50

++

R512 56k

C513 10/50

AG

IC502 (2/2) UPC4570HA

C518 4.7/50

R518 56k

C519 10/50

AG

R301

3.3k 312312312331

VR301 10k(B) MCS3002

MIC1 MIC2 MIC3 ECHO MUSIC

B

+9V

IC401

TC4052BP

1

VDD

Y0

5

Y1

YC

2

Y2

4

Y3

12

X0

14

XC

X1

15

X2

11

X3

6

VEE

INH

VSS

AG

+9V.2

+

AG

DG1

+

JA505 MKP1019

MDD1016

CN301 MEP3009

R302

3.3k

6 7

R504 330

R508 10k

R509 47k R510 47k

C510

0.01

6 7

R514 330

−9V +9V.2

4 3

R520 330

VR302 10k(B) MCS3002

+

1

C506 1800P

IC502 (1/2) UPC4570HA

5

R515

+

1

R521

C520 1800P

MIC1

R303

3.3k

IC501 (1/2) UPC4570HA

R503 33k

R513 33k

R519 33k

VOLUME BOARD ASSY (MWX1078)

+

16

3

13 10

A

9

B

7

8

−9V

C507 1000P C508 33/16

AG

8

R505

4.7k

Q501 2SA1048

Q502 2SA1048

8

4.7k

+

C523 33/16 C524 1000P

AG

C521 33/16

AG

2

4.7k

MIC2

MIC3

321456789 321456789 321456789

VR303 10k(B) MCS3002

C425 33/16 C407 1000P

AG

R409 100

R410 100

+

C426 33/16

C408 1000P

AG

R506 100

KMI3

KMI1

KMO3

R516

100 C514 1800P

C522 1000P

R522

100

MIC1,2

ECHO

ECHORLRAG

2

VR304 10k(B) MCS3003

101112 101112 101112

6

4

L

5

VR305 50k(B) MCS1014

AG

2

1

C409 33/16

AG

R407 100k

R408 100k

IS1 IS2

+

2 3

AG

6 5

AG

6 5

IC604 (2/2) M5218AL

MIC3 MIC1,2

SW 201 SUR

SW 205 LD

SW 209

SW201-206,208-211 : MSG3006

+9V.2

8

4

−9V

SW501 MSG3005

JA701 MKP1022

MDD1019

CN201 MEP3015

SW 202 VOCE

SW 206 TAPE

SW 210 N

R411 100k

IC402 (1/2) M5218AL

1

R413 100

R412 100k

IC402 (2/2) M5218AL

7

R414 100

+

C410 33/16

AG

7 ECHO

P0P4SIRQSISICK

2

5

SW 203 VOCP

SW 211 #

+9V

C665 1000P

L611

2.2

C650

+

33/16

R631

AG

C601 33/16

L

R

C602 33/16

R633

1.1k

C651

R622

33/16

1.1k

+

R621

C615

100k

1000P

AG AG AG

VCC

SRDY

SIAK

1 3

4

C528 33P

6

6 5

R527 220

AG AG

KMI1

KMI2

KMI3

KMI4

KMO1

KMO2

KMO3

321456789 321456789 321456789

SW

VCC

204 OTK

SW 208 VCR

C202 1/50

1.1k

R603 1.1k R607 3.9k

+

C603

R601

1000P

100k

AG

C666

+5V

1000P

R604

AG

1.1k

+

C604

R602

1000P

100k

AG

C617 1/50

+

+5V

R684 1M

AG

R624 3.9k

R623

C616

1.1k

4700P

L605

F601

2.2

MTF3002

C640

0.01 DG2 DG2

R670

D0 D1

R671 R672

D2

R673

D3

R528 33k

R529 100

7

IC503 (2/2) M5218AL

ECHO

LSEL1

LSEL2

LSEL3

LSEL4

10

11

10

11

10

11

C201

0.01

0

123456789101112131415

24

+

123456789

DG1

D209

432

A-a

+5V

C607

R609 1.5k

+

1/50

R685 1M

AG

R605

C605

1.1k 4700P

AG

C608

R610 1.5k

+

1/50

R686

R632

1M

AG

1.1k R608 3.9k

R606

C606

1.1k 4700P

AG AG

+

R625 1.5k

IC201 TC74HC154AP

D210

C

C618 33/16

R626 91k

2

8

1

3

IC604 (1/2)

4

M5218AL

+

−9V

AG

+5V

C654

C656

0.01

47/16

DG1 DG1 DG1 DG1

C642 33/16

+

C641

0.01 DG2DG2

100

2

I/O1

3

100

I/O2

100

15

I/O3

100

17

I/O4

VSS

DG1

C529 33/16

AG

R530 10k

R531 220

INPUT.SELECT

KEY.MATRIX LED.SELECT

202122

23

B

A

C

10111314151617

D211

D212

D213

D214

D215

D216

D217

1

N

#1#2#3

FRONT BOARD ASSY (MWX1077)

C611 33/16

+

AG

R611 91k

2 3

6 5

−9V

AG R627 110k

C620 33/16

F602 MTF3002

IC602 LC32464P-80

9

18

DG2

D

VCC

#4

R613

8

110k

1

IC603 (1/2) M5218AL

R612 91k

R614 110k

7

IC603 (2/2)

4

M5218AL

+

C612 33/16

AG

R629 91k

C622 1000P

R630 11k

DSPVCC

C653

0.01

DG2

14

R652 100

A0

R653 100

13

A1

R654 100

12

A2

R655 100

11

A3

R656 100

8

A4

R657 100

7

A5

R658 100

6

A6

R659 100

10

A7

R675 100

5

RAS

R676 100

16

CAS

R677 100

1

OE

R678 100

4

WE

+9V.2 +9V.2

+

R532

10k 2 3

C537 33/16

CN202 MEP3010

C530

8

10/50

+

1

IC503 (1/2)

4

+

M5218AL

−9V

AG

VCC

JA702

LED1

MKP3007

MDD1018

VCC

19

18

D202

G2

G1

VSSVDD

12

330

DG1

R202

R208 330

SUR

D201,206,207,218 :SLR-342VC D202,203,205, :SLR-342MC D209-212,214-217 D204,213 :SLR-342DC

C613 1500P

C614 1500P

++

C673 33/16

R533 33k

LED2

LED3

321456789 321456789 321456789

D203

D204

330

270

R203

R204

VOLE

VOLP

R617 91k

R619 11k

R618 91k

R620 11k

L610

2.2

AG

L608

2.2 C674

1000P

A0 A1 A2 A3 A4 A5 A6 A7 RAS CAS RE WE

C531 10/50

R534 220

LED4

LED5

LED6

D205

D206

D207

270

330

R205

R206

LD

OTK

4

41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

DSP,CONTROL

+

2 3

AG

LED8

DG1

VCC

DG1

POWER

D218

VCC

DG1

VCR

TAPE

C655 47/16

40

39

38

37

36

35

34

33

32

ADL3

ADL1

ADR2

ADRVdd

DSPVCC

DG2

C527 33/16

+

MIC

+

AG

ADLVdd

IC601 LC83025E

L603

2.2 C677

1000P

DG2

ADL2

ADLVss

Vdd4

DG2

DARVdd

Vss4D4D3

ADR1

ADRVss

ADR3 ADM2 ADMVss ADM1 ADMVdd ADM3 P0 P1 P2 P3 P4 Vdd3 Vss3 SIRQ SI SICK SRDY SIAK A0 A1 A2 A3 A4

A5A6A7A8D7D6D5

6566676869707172737475

C676 33/16

R535 33k 8

1

IC504 (1/2) M5218AL

R201 330

D201

+

31

DADR

TE

30

DARV

D3

C011

4

A B C

1234

5

+

42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22

1 2 3 4 5 6 7 8 9

10

1 2 3 4 5 6 7 8 9

10

20 19 18 17 16 15 14 13 12 11

11 12 13 14 15 16 17 18 19 20 21

+

R711

2.7K

R002

1M

R006

10K

R003

22K

R710

100K

R709

2.7K

R004

4.7K

R005

10K

+

C325

0.01

C324

0.01

C323

0.01

C321

0.01

C322

0.01

+

!

10

987654321

10

987654321

10

987654321

1 2 3 4 5

2 1

1 2

BLU

RED RED BLU

BLK

BLU

WHT

C663

4.7/50

C637

4.7/50

C415 10/50

C417

10/50

C418

10/50

C416 10/50

C429 33/16

C427 33/16

C428 33/16

C414 100p

C413 100p

C421

470p

C422

470p

C419

470p

C420

470p

C638

4.7/50

C664

4.7/50

R637

9.1k

R682

9.1k

R641

9.1k

R643

9.1k

R645

100

R646

100

R648

100k

R647

100k

R425 100k

R426 100k

R433 100k

R434 100k

R542

15k

R543

27k

R437

100

R438

100

R435

100

R431 100k

R432 100k

R436

100

R428

2.2k

R427

2.2k R429

4.7k

R430

4.7k

R415

6.8k

R417

10k

R419

10k

R421

1k

R422

1k

R420

10k

R416

6.8k

R418

10k

R712

47k

R704

47k

R642

9.1k

R644

9.1k

R638

9.1k

R683

9.1k

R640

9.1k

R639

9.1k

R635

100k

R636

100k

5 6

3

2

1

4

7

C630

100/16

C629

100/16

C632

100/16

C625

4700p

C626

4700p

C633

4700p

C634

4700p

C623

2200p

C624

2200p

C628 270p

C627 270p

C636

180p

C635 180p

AG

–9V

– +

–

+

5

6

4

7

– +

5

678

– +

5

6

7

4

3 2

8

4

–

+

1

3

2

8

IC606(1/2)

M5218AL

IC605(2/2)

M5218AL

IC605(1/2)

M5218AL

IC606(2/2)

M5218AL

+9V

+

C631

100/16

+9V

AG

–9V

-9V

+9V

AG

IC404(1/2) M5218AL

IC404(2/2)

M5218AL

R423

15k

R424

Q401

2SD2144S

Q402

2SD2144S

IO OI

CI

IO OI

CI

IO OICIIO OI

CI

43

5

89

6

121311 10

12147

IC405

(1/4)

IC405

(4/4)

IC405

(3/4)

IC405

(2/4)

JA403(1/2)

MKN1024

JA403(2/2)

MKN1024

1

2 3

4

5 6

L

R

LINE

FG

+9V

L

R

TAPE

IC405 :

TC4066BP

VCCVCC

VCC

J701

J702

R713 47k

R714 47k

R715 47k

R716 47k

C702

0.01

C703

0.01

C701

47/10

MTF3002

F701

DG1

P00 PE1/TRB

PE0/TRA

Vdd PD3/CMP3 PD2/CMP2 PD1/CMP1 PD0/CMP0

PC3/Vr1 PC2/Vr0

P63/PIN1

P62/SK1 P61/SO1

P60/SI1

P53/INT2

P52

P51

P50

P43

P42

RES

OSC2

P01 P02 P03 P10 P11 P12 P13 SI0/P20 SO0/P21 SK0/P22 INT0/P23 INT1/P30 PO0/P31 PO1/P32 HLD/P33 P40 P41 TEST Vss OSC1

RESDSP

LED1

P4

LED2 LED3 LED4 LED5 LED6 LED7

REFH VrefH AVdd LRCK DATAL DATAR BCLK

SYSCLK

DVdd

NC

VrefL

AGND

REFL

DGND

MODE2 MODE1 FSEL

TSTOUT

LED8

LSEL1 LSEL2

LSEL4 LSEL3

IS1

KMO1

KMO2

KMO3

KMI1

KMI4 KMI2

KMI3

IS2

SI SICK

P0 SIRQ

SRDY

SIAK

IC701 PDC031A

DG1

X701

MSS3013

4MHz

2

13

DG1

CH1OUT CH2OUT

MTF3002

F603

IC608

LC78815M

AG

C660 47/10

C662 47/10

C661

47/10

C669

1000p

C670

1000p

C672

1000p

C671 1000p

L606

2.2

+5V

DG1

DG1 DG1DG1

DG1

R537 120k

C533 33p

R536

9.1k

R540

8.2k

R541

47k

AG

AG AG AG AG

C532

0.068

1SS254

D501

Interrupt Det .

C535

1/50

C534 33/16

R538

100k

R539

330k

C536

10/50

IC504(2/2)

M5218AL

–9V

+5V

Q504

2SC2458

Q701

2SC2458

Q001 2SA933S

Q002 2SC1740S

Q003

2SA933S

R708 10k

IC702

M51951BSL

31

2

C706

1/50

C013

3.3/50

C014

100/25

C012

10/50

C708

220/10

C707

0.01

DG1

RD4.3ES D702

D701

1SS254

DG1

VCC

AG AG AG

AG

+9V.2

D012

RD16JS

D015

1SS254

1SS254D011

1SS254D014

1SS254D010

1SS254D009

D013

1SS254

–9V

+9V

FG

BRN LIVE

NEUTRAL BLU

AC 230V 50/60Hz

AC POWER CORD PDG1003

T002

JKE1002

JKE1003

T001

JKE1001

T003

POWER TRANSFORMER MTT1016

5 2 3 4 1 6

10 11

12

8 9

15

R001 4.7k

FG

MEP1049 CN001

MEP1049 CN321

SW321 MSG1007

MDD1015

17

18

16

3

126

4

5

12

10

11

9

7

8

15

13

14

POWER SWITCH BOARD ASSY

(MWX1076)

+9V.2

L501

2.2

OUT

COM COM

IN

OUT IN

COM

OUT IN

C002

1000/25

C003

1000/25

C001

1000/25

D003

!

D005

D007

!

D004

!

D008

!

D006

D001 D002

C008

0.1

C009

0.1

C007

0.1

C010

47/10

C005 47/16

C006

47/16

C004

47/16

+5V

NJM78L05A

IC004

13

2

NJM7809FA

IC001

1

3

2

!

COM

OUT IN

NJM7805FA

IC003

13

2

AG

+9V

–9V

IC002

NJM7909FA

VCC

FG

DG1

INPUT.SELECT LED.DRIVE

KEY.MATRIX LED.SELECT

D001–D008 :

ERA15–02KFRB

+

D3D2D1D0RAS

CAS

D2D1D0

RAS

CAS

1

7677787980

DREAD

2

DWAT

3

ASO

4

BCKO

5

LRCKO

6

FS3840

7

ASI

8

BCKI

9

LRCKI

10

FS3841

11

SELC

12

Vdd1

13

OSC1

14

OSC2

15

Vss1

16

Vss2

17

RES

18

SAIF

19

SAOF

20

TEST6

21

TEST1

22

TEST2

23

TEST3

24

ST4

DARVss

29

DALVdd

28

DADL

27

DALVss

26

Vdd2

25

TEST5

L602

2.2

C675 1000P

X601 MSS1017

R687 100

C643 13P

C644 1000P

C645 30P

C657 22P

C658 22P

C659 22P

L601

1.5

33.8688MHz

+5V

−9V

IC501 (2/2) UPC4570HA

C515 33/16

C516 1000P

AG

4 3

2

5

MIC

Lch Rch

Rch

Lch

DG2

WE RE

DG2

DG1

R679

100 100 100

R680 R681

RESDSP

: AUDIO SIGNAL ROUTE

POWER SWITCH BOARD ASSY SW321 : POWER STANDBY/ON

MAIN BOARD ASSY SW501 : MIC.3 ECOH

FRONT BOARD ASSY SW201 : SURROUND SW202 : CHORUS SW203 : VOC.P. SW204 : ONE T.K. SW205 : INPUT SELECTOR1 SW206 : INPUT SELECTOR2 SW208 : INPUT SELECTOR3/TAPE SW209 : KEY CONTROL SW210 : KEY CONTROL SW211 : KEY CONTROL #

DG1DG1DG1 DG1

+9V.2

–9V

D

678

MA-990

A-b

A

Large size

SCH diagram

A-a

B

A-b

5

6

C

Guide page

A-b

A-a

Detailed page

A D

7

A-b

D

5

8

A

C

4

C

4

+

MAIN BOARD ASSY (MWX1079)

JA402

MKN1017

L

R

R401

C401

330P

C425 33/16

C409 33/16

C410 33/16

C650

33/16

C611

33/16

C607

1/50

C608

1/50

C612

33/16

C601

33/16

C602

33/16

C618 33/16

C620

33/16

C622

1000P

C674

1000P

ADRVdd

ADR3

ADM2

ADMVss

ADM1

ADMVdd

ADM3P0P1P2P3P4Vdd3

Vss3

SIRQSISICK

SRDY

SIAKA0A1A2A3

A4

A5

A6

A7

A8

D7

D6

D5

Vdd4

Vss4

D4

D3

D2

D1

D0

RAS

CAS

D3

D2

D1

D0

RAS

CAS

C653

0.01

C654

0.01

C656

47/16

C640

0.01

C641

0.01

R670

R671

R672

R673

100

R652 100

R653 100

R654 100

R656 100

R655 100

R657 100

R658 100

R659 100

R675 100

R676 100

R677 100

R678 100

A0A1A2A4A3A5A6A7RAS

CASREWE

100

C642

33/16

IC602

LC32464P-80

IC601

LC83025E

L605

2.2

9

I/O1

14131211876

10

1614

5

I/O2

I/O3

I/O4

VSS

2

A0A1A2A3A4A5A6

A7

RAS

CAS

OE

WE

3

15

17

18

F602

MTF3002

F601

MTF3002

C673

33/16

R629

91k

R626

91k

R630

11k

DSPVCC

4142434445464748495051535254555657585960616263

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

DREAD

DWAT

ASO

BCKO

LRCKO

FS3840

ASI

BCKI

LRCKI

FS3841

SELC

Vdd1

OSC1

OSC2

Vss1

Vss2

RES

SAIF

SAOF

TEST6

TEST1

TEST2

TEST3

40

TEST4

ADR1

39

ADRVss

38

ADR2

37

ADL3

36

ADLVdd

35

ADL1

34

ADLVss

33

ADL2

32

DARVdd

31

DADR

30

DARVss

29

DALVdd

28

DADL

27

DALVss

26

Vdd2

25

TEST5

VCC

C613

1500P

C614

1500P

L610

2.2

L602

2.2

C677

1000P

C676

33/16

L603

2.2

C655

47/16

C617 1/50

C651

33/16

C407 1000P

R409 100

R407 100k

R411

100k

L611

2.2

C665 1000P

C666

1000P

C603

1000P

C604

1000P

C615

1000P

R412

100k

R413

100

R685

1M

R686

1M

R684

1M

R611

91k

R612

91k

R613

110k

R617

91k

R619

11k

R618

91k

R620 11k

R614

110k

R627 110k

R631

1.1k

R632

1.1k

R604

1.1k

R622

1.1k

R633

1.1k

R601

100k

R602

100k

R621

100k

R605

1.1k

R606

1.1k

R623

1.1k

C605

4700P

C606

4700P

C616

4700P

R603 1.1k R607 3.9k

R608 3.9k

R624 3.9k

R625 1.5k

R609 1.5k

R610 1.5k

R414

100

R408 100k

R410 100

C405

330P

C426

33/16

C408

1000P

C402

330P

C403

330P

C404

330P

C406

330P

C501

0.01

R501

470

R511

470

R502

56k

R503

33k

IC501 (1/2)

UPC4570HA

R504

330

R507

10k

R508

10k

Q501

2SA1048

Q502

2SA1048

R509 47k

KMI3

KMI1

KMO3

R510 47k

R506

100

R505

4.7k

C502

0.01

C503

2200P

C504

4.7/50

C507 1000P

C508 33/16

C505

10/50

C506

1800P

C509

0.01

C510

0.01

1k

AG

AG AG AG

AG

DG1 DG1 DG1 DG1

DG2

AG AG

AG

+5V

AG

IS1

IS2

AG

−9V

+9V

+9V.2

+9V

+5V

DG2 DG2

D0D1D2

D3

DG2DG2

AG

FG

FG FG

DG1

AG AG

AG

VCC

AG

+9V.2

AG

R4021kR4031kR4041kR4051kR406

1k

1

2

3

1

2

3

16

152

4

121415

11

6

3

13109

7

8

4

6

5

2

4

1

654237891

LD

JA401 (1/2)

MKN1024

JA401 (2/2)

MKN1024

JA501

MKN3005

JA502

MKN3006

JA503

MKN3005

JA504

L

R

VCR

L

R

TAPE

6

7

8

R512

56k

R513

33k

IC502 (1/2)

UPC4570HA

R514

330

R516

100

R515

4.7k

C511

2200P

C512

4.7/50

C513

10/50

C514

1800P

C523 33/16

C524 1000P

AG AG AG

AG

−9V

+9V.2

2

4

1

6

7

8

5

1

R517

470

R518

R519

IC502 (2/2)

UPC4570HA

C517

C518 4.7/50

C521 33/16

C522

1000P

AG

2

4

2

1

+

IC402 (1/2)

M5218AL

IC402 (2/2)

M5218AL

IC603 (1/2)

M5218AL

IC603 (2/2)

M5218AL

IC604 (1/2)

M5218AL

IC604 (2/2)

M5218AL

−9V

2

3

1

L

R

ECHO

8

6

5

7

6

5

7

4

2

3

1

8

2

3

1

8

4

6

5

7

4

−9V

DG2

DSPVCC

IC401

TC4052BP

VDD

VSS

VEE

B

A

XC

YC

Y0Y1Y2Y3X0X1X2X3INH

J501 0

L608

2.2

A

B

C

MA-990

A-b

A-a

1

23

4

D

6

A-a

1234

5

+

R

9

+9V.2

L5

2

OUT

CO

C011

0.1

C010

47/10

+5V

NJM7

IC0

1

AG

+

3 2 1

4

5

6

7

8

9

10

11

12

3 2 1

4

5

6

7

8

9

10

11

3 2 1

4

5

6

7

8

9

3 2 1

4

5

6

7

8

9

10

11

12

3 2 1

4

5

6

7

8

9

10

11

3 2 1

4

5

6

7

8

9

3 2 1

4

5

6

7

8

9

10

11

12

3 2 1

4

5

6

7

8

9

10

11

3 2 1

4

5

6

7

8

9

+

VOLUME BOARD ASSY

(MWX1078)

FRONT BOARD ASSY (MWX1077)

D3

D2

D1

D0

RAS

CAS

R670

R671

R672

R673

100

R656 100

R657 100

R658 100

R659 100

R675 100

R676 100

R677 100

R678 100

A4A5A6A7RAS

CASREWE

100

SW501

MSG3005

IC503 (2/2)

M5218AL

IC503 (1/2)

M5218AL

IC504 (1/2)

M5218AL

R527

220

R531

220

R534

220

R529

100

R530

10k

R532

10k

R535 33k

C529

33/16

C527

33/16

C530

10/50

C531

10/50

R533

33k

R528

33k

C528 33P

I/O1

876

10

1614

5

I/O2

I/O3

I/O4

VSS

2

A4A5A6

A7

RAS

CAS

OE

WE

3

15

17

18

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

C677

1000P

C676

33/16

L603

2.2

D0D1D2

D3

DG1

AG AG

VCC

DG1

VCC

DG1

24

12

VSSVDD

1

2

3

4

5

6

7

8

9

10

11

13

14

15

16

17

G2 G1

D C B A

19

0

D209

4

3

2

1

N

#1

#2

#3

#4

D210

D211

D212

D213

D214

D215

D216

D217

D202

D203

D204

D205

D206

330

270

330

R202

R203

R204

R205

R206

D207

D218

SUR

VOLE

VOLP

OTK

LD

TAPE

VCR

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

18

20 21 22 23

KEY.MATRIX

LED.SELECT

DG1

AG

+9V.2 +9V.2

MIC3

1

324

6

5

MIC1,2

DG2

JA504

MKN3005

R514

330

C513

10/50

1800P

C523 33/16

C524 1000P

AG

−9V

+9V.2

C550

0.01

R517

470

R518

56k

R519

33k

IC502 (2/2)

UPC4570HA

R520

330

R522

100

R521

4.7k

C517

2200P

C518 4.7/50

C521 33/16

C519

10/50

C520

1800P

C522

1000P

R301

3.3k

VR301

10k(B)

MCS3002

MIC1 MIC2 MIC3 ECHO MUSIC

VR302

10k(B)

MCS3002

VR303

10k(B)

MCS3002

VR304

10k(B)

MCS3003

VR305

50k(B)

MCS1014

SW

201

SUR

SW

202

VOCE

SW

203

VOCP

SW

204

OTK

SW

205

LD

SW

206

TAPE

SW

208

VCR

C202

1/50

D201,206,207,218 :SLR-342VC

D202,203,205, :SLR-342MC

D209-212,214-217

D204,213 :SLR-342DC

R208

330

R201

330

D201

C201

0.01

IC201

TC74HC154AP

SW

209

SW

210

N

SW

211

#

R302

3.3k

R303

3.3k

AG

FG

AG AG

AG

MIC1

MIC2

MIC3

MIC1,2

ECHO

R

L

R

AG

KMI1

KMI2

KMI3

KMI4

KMO1

KMO2

KMO3

LSEL1

LSEL2

LSEL3

LSEL4

LED1

LED2

LED3

LED4

LED5

LED6

LED8

L

JA505

MKP1019

JA701

MKP1022

MDD1019

JA702

MKP3007

MDD1018

CN301

MEP3009

MDD1016

CN201

MEP3015

CN202

MEP3010

AG

2

4

1

4

3

2

1

+

MIC

DG2

DSPVCC

DG2

DSP,CONTROL

DG2

P0

P4

SIRQ

SI

SICK

SRDY

SIAK

6

5

7

2

3

1

8

2

3

1

8

4

−9V

SW201-206,208-211

: MSG3006

ECHO

INPUT.SELECT

C537

33/16

POWER

31

2

31

2

31

2

3

1

2

6

4

5

C

B

678

MA-990

A-b

A

A-a

B

C

A-a

7

B C

8

D

7

5

6