Pioneer MJNS-1 Service manual

ORDER NO.

RRV2363

MINIDISC RECORDER

MJ-NS1

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

Type

ZPWXJ DC power supplied from other system component

¶ This product is a system(s) component.

This product does not function properly independently ; to avoid malfunctions, be sure to connect it to the prescribed system component(s), otherwise damage may result.

¶ Please connect it to the STEREO CD TUNER XC-NS1 and STEREO POWER AMPLI-

FIER M-NS1 for adjustment and operation inspection.

Model

MJ-NS1

Power Requirement Remarks

Component Model Service manual Remarks

STEREO CD TUNER XC-NS1 RRV2348 (RRV2341) STEREO POWER AMPLIFIER M-NS1 RRV2349 (RRV2321) SPEAKER SYSTEM S-NS1-LRW RRV2371 Except YPWXJ type

MINIDISC RECORDER MJ-NS1 RRV2363 This manual.

CONTENTS

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

4. PCB CONNECTION DIAGRAM

5. PCB PARTS LIST

6. ADJUSTMENT

PIONEER 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 EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

c

PIONEER CORPORATION 2000

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7. GENERAL INFORMATION

2

7.1 DIAGNOSIS

3

8 21 26 29

7.1.1 SINGLE OPERATION METHOD

7.1.2 POWER ON SEQUENCE

7.1.3 DISASSEMBLY

7.2 IC

8. PANEL FACILITIES AND SPECIFICATIONS

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T – ZZV AUG. 2000 Printed in Japan

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37 37 37 38 40 43 46

MJ-NS1

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician.

Additional Laser Caution

Control method of the current through a laser diode.

The resistor R105 on the CORE MAIN UNIT ASSY (For MD mechanism assy) are for the limiting of current through a laser diode.

LABEL CHECK

Control method of the laser output power

The laser pickup assy provide the photo-diodes and APC (Auto Power Control) circuit. The photo-diode detect output of the laser diode then IC104 control the APC circuit according to the signal voltage of the photo-diode via IC101. The Variable resistancer on the FPC in the Laser pickup assy can be adjusted the output level of Laser diode to fix the rated output level.

Laser Interlock Switch

The loading position detect switch S101 is set to “ LOAD ON ” (ON: low level, OFF: high level) position, IC104 get the “ LOAD ” signal, and hand the laser “ LDON ” signal to No. 9 terminal (LDON) of the Laser pickup assy. Then a laser diode can be lighted exept when the level of signal “LOAD ” is low.

∗ Refer to page 30.

IMPORTANT THIS PIONEER APPARATUS CONTAINS LASER OF CLASS 1. SERVICING OPERATION OF THE APPARATUS SHOULD BE DONE BY A SPECIALLY INSTRUTED PERSON.

LASER DIODE CHARACTERISTICS MAXIMUM OUTPUT POWER: 32 mW WAVELENGTH: 785 nm

2

2. EXPLODED VIEWS AND PARTS LIST

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

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.

•

2.1 PACKING

(1) PACKING PARTS LIST

3

Mark No. Description Part No.

MJ-NS1

8

2

6

7

10

1

11

12

13(1/2)

13(2/2)

NSP 8 Warranty Card ARY7027 NSP 10 Polyethylene Bag Z21-038

1 Optical Digital Cable RKX1031 2 Stand A AXG7096 3 Stand B AXG7097 4 • • • • • • • 5 • • • • • • •

6 Spacer MD ,TC AHB7038 7 Operating Instructions ARE7266

(English/Chinese)

9 • • • • • • •

(230×340×0.03)

11 Sheet (550×550×0.5) Z23-026 12 Front Pad M (PLS) AHA7295 13 Rear Pad M (PLS) AHA7296 14 Packing Case AHD7901

14

3

MJ-NS1

2.2 EXTERIOR

30

26

12

18

37

38

19

E

A

2

27

22(1/2)

32

23

31

C

B

38

3

D

A

27

14

22(2/2)

38

37

38

13

4

C

1

34

29 17

B

E

38

C

38

31

36

5

F

F 37

38

24

25

38

28

16

39

A

37

D

20

21

7

" Refer to

2.3 MD Mechanism"

38

21

37

8

21

E

20

D

6

10

38

B

38

11

38

24

F

15

38

15

40

35

9

33

4

EXTERIOR PARTS LIST

Mark No. Description Part No.

MJ-NS1

NSP 2 RELAY UNIT AWU7576 NSP 3 KEY L UNIT AWU7577 NSP 4 KEY R UNIT AWU7652 NSP 5 BLUE UNIT AWU7653

NSP 6 IC UNIT AWU7654 NSP 7 MD Mechanism AXA7087

NSP 10 Bottom Chassis MDTC ANA7108

1 MAIN UNIT AWU7607

8 Lead Card 30P (J4101) ADD7280

(MAIN CN4101 ↔ MD CORE CN104)

9 Cord with Plug (J4103) ADE7065

(System Cable to CD Receiver)

11 Sub Chassis (MTL) AND7036 12 Disc Guard (MTL) ANG7319 13 Shield Case (FE) ANK7077 14 MD Spring ABH7189 15 Leg AEB7090

16 FL Holder (PLS) AMR7312 17 Illumination Holder AMR7317 18 MD Flap Holder (PLS) AMR7318 19 MD Cam (PLS) AMR7319 20 Float Screw (FE) RBA1133

21 Float Rubber (Rubber) REB1328 22 Button MD (PLS) AAD7582 23 Display Window MD (PLS) AAK7763 24 Rear Cap MD TC (PLS) AAK7772 25 FL window MD TC (PLS) AAK7793

26 Door NS (PLS) AAK7807 27 Lens MD TC (PLS) AAK7838 28 FL Cover AAK7841 29 Illuminate Lens (PLS) AAK7842 30 Sub Panel MD (PLS) AAP7069

31 Side Line (PLS) AAP7074 32 Screw (Steel) ABA7062 33 Bottom Base CDMD (PLS) AMA7017

NSP 35 Name Label (PAP) MD/ZP AAL7254

34 Top Panel MD (PLS) AMB7700

36 Connector Label ARW7110 37 Screw BBZ30P080FMC 38 Screw BBZ30P080FZK 39 Screw VBZ30P100FZK 40 Caution Label PRW1018

5

MJ-NS1

2.3 MD MECHANISM

19

21

18

20

37

6

51

52

8

37

34

E

4

9

17

A

54

53

24

14

37

13

12

40

15

40 26

E

F

5

G

41

16

35

F

11

B

27

10

36

C

28

44

33

31

23

40

H

25 39

29 3946

32

42

30

H

38

43

B

CN102

40

H

2

48

49

50 47

45

A

CN105

G

1

G

C

CN101

D

3

54

6

CN103

D

MD MECHANISM PARTS LIST

MJ-NS1

Mark No. Description Part No.

1 MD CORE MAIN UNIT AWU7591

NSP 2 MD CORE SW UNIT AWU7592

3 Lead Card 7P RDD1403 4 Lead Wire 2P RKP1814 5 Lever Spring RBH1463

6 Clamp Spring RBK1074 7 • • • • • • • • • • 8 Loading Belt REB1329 9 Lock Plate RNE1949

10 Loading Base (ABS) RNK2323 11 Under Slider (POM) RNK2314

12 Gear Pulley (POM) RNK2316 13 Drive Gear (POM) RNK2317 14 Clutch Gear (POM) RNK2318 15 Flip Disk (POM) RNK2319

16 SW Lever RNK2320 17 Shutter Assy (FE) RXA1774

NSP 18 Upper Slider Assy RXA1782

19 Eject Spring RBH1461 20 Upper Slider (POM) RNK2324

21 Carrier (POM) RNK2315 22 • • • • • • • • • • 23 Spindle Spring RBH1460 24 Lifter Spring RBH1462 25 Screw Guide (SUS) RBK1072

26 S.H. Spring (SUS) RBK1073 27 Guide Shaft RLA1312 28 Lead Screw (SUS) RLA1311 29 Shield Case (FE) RNE1950 30 Reference Plate RNK2306

Mark No. Description Part No.

31 S. Holder RNK2307 32 Worm Wheel RNK2309 33 Hook (POM) RNK2310 34 Head Lifter RNK2311 35 MD Head RPB1063

36 MD Pick-Up RWY1019 37 Screw (FE) Z39-019 38 Screw JFZ17P020FZK 39 Screw JGZ14P020FMC 40 Screw JGZ17P028FMC

41 Screw JGZ17P040FMC 42 Screw PMB20P040FMC

43 Servo Base Assy REA1283 NSP 44 Clamp Magnet RMF1002 NSP 45 Servo Base RNE1951

NSP 46 Disk Table RNK2305 NSP 47 Spindle Motor RXM1091

48 Carriage Motor Assy REA1284

49 Worm RNK2308 NSP 50 Carriage Motor RXM1090

51 Loading Motor Assy REA1290

52 DC Motor /0.75W PXM1010

53 CA Pulley RNK2322

54 Screw BPZ20P080FMC

7

1

23

MJ-NS1

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

A

3.1 BLOCK DIAGRAM

(REC)

(MD)

AOUT-L

B

CN104

MD CORE MAIN UNIT

G

IC110

(AK4519VF)

Audio Codec

AIN-L

25 26

19 6

15 12

DIN

15

(D) (D)

4

(MD)

(REC)

(D)

IC103

(MSM51V4400D70TSK)

DRAM

MD PICKUP

REC HEAD

CN101

C

LOADING

CARRIAGE

SPINDLE

M M M

IC101

(IR3R55M)

RF Amp.

CN701

DISC

INSIDE

40

CN102

CN105

CN103

(RF)

IC107

(BD7910FV)

Head

Driver

IC106

(M56788FP)

5ch Motor

Driver

(MD)

74 73

Encoder/Decoder

3

7

H

MD CORE SW UNIT

(REC)

DADATA

ADDATA

IC102

(LR376487)

+

Digital Servo

50

(REC)

VD+3

DIN

66

IC104

(PD5593A)

MD Mecha

Control

IC106

(RN5RG32AA)

+3.2V Reg.

CONTROL

CN106

D

8

1234

5

678

MJ-NS1

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

OPT DIGITAL IN

JA4601

CN4103

To CD Receiver

10

13

12

15

CN4102

From Deck

10

13

12

15

A

CN4101

AOUT-L

6

AIN-L

5

DIN

16

(D)

DIN

DSTB

MDDATA

MUTE

(TC74HCT08AF)

3V → 5V CONVERTER

(MD)

IC4102

(BA4558F-HT)

(REC)

(D)

IC4201

REC AMP

IC4202

(BA4558F-HT)

PB BUFFER

6

39

PBL

RECL

1

3

System Control U-com

PBR

RECR

3

1

IC4101

(PDG257A)

SDATA SCLK DREQ DDATA

DCLK

(REC)

A

1

(MD)

4

(BU4066BCF)

OUTPUT SELECTOR

MAIN UNIT

RECL

IC4203

PBL

2 3

V+7.5V

RECR

PBR

B

IC4006

(NJM7805FA)

5V REG.

IC UNIT

B

VD+5V

TEST3

CN4107

TEST1

CN4105

1 3 2 11 2 3 4 5

GNDD

MECAH TEST

INPUT

+SEARCH

FF

–SEARCH

REW

TEST2

CN4106

P-ON

CN4104

J4901

Key Input

Q4906

EJECT

Q4901-

LED Driver

REC STOP PLAY/PAUSE

(MD)

: AUDIO SIGNAL ROUTE (MD)

(D)

: DIGITAL SIGNAL ROUTE

(REC)

: AUDIO SIGNAL ROUTE (REC)

KEY-R UNIT

C

MONO

REC

DIGITAL

PLAY

D

E F

KEY-L UNIT

RELAY UNIT

BLUE UNIT

C

D

9

5

6

7

8

1

23

MJ-NS1

3.2 OVERALL CONNECTION DIAGRAM

A

SHF SHF

B

4

IC UNIT (AWU7654)

B

G

C

MD CORE SW UNIT (AWU7592)

MD CORE MAIN UNIT (AWU7591)

H

KEY-R UNIT (AWU7652)

D

10

1234

C

5

678

MJ-NS1

A

MAIN UNIT (AWU7607)

B

C

5

KEY-L UNIT

D

(AWU7577)

F

E

D

RELAY UNIT

(AWU7576)

6

7

BLUE UNIT (AWU7653)

11

8

1

MJ-NS1

3.3 MAIN UNIT (1/2)

A

CN104

B

G

(REC)

23

A

MAIN UNIT (1/2) (AWU7607)

(MD)

(D)

4

1/2

(MD)

CN4101

C

D

(D)

(MD)

: AUDIO SIGNAL ROUTE (MD)

(D)

: DIGITAL SIGNAL ROUTE

(REC)

: AUDIO SIGNAL ROUTE (REC)

3V-5V Converter

12

1/2

A

1234

5

678

MJ-NS1

(REC)

(MD)

: The power supply is shown with the marked box.

(MD)

A

From DECK

B

CN4102

(MD)

B

IC UNIT (AWU7654)

5

C

(MD)

To CD RECEIVER

CN4103

1/2

A

6

7

B

8

13

D

1

23

MJ-NS1

3.4 MAIN UNIT (2/2), KEY-R, KEY-L, RELAY and BLUE UNITS

4

BLUE UNIT (AWU7653)

A

B

F

RELAY UNIT (AWU7576)

CN4901

J4904

KEY-L UNIT

D

(AWU7577)

E

J4901

CN4104

SWITCHES

S4901 : EJECT S4902 : REC

C

J4907

J4908

TEST3

CN4107

C

KEY-R UNIT (AWU7652)

D

SWITCHES

S4903 : STOP S4904 : PLAY/

PAUSE

14

2/2

A

1234

C

D

E F

TEST1 CN4105

5

678

MJ-NS1

A

2/2

MAIN UNIT (2/2) (AWU7607)

B

SYSTEM CONTROL U-COM

C

TEST2 CN4106

5

D

2/2

A

6

7

8

15