Pioneer XRMR-7 Service manual

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STEREO CD / CD-R RECEIVER

XR-MR7

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

Type

KU/CA AC120V MY AC220-230V

Model

XR-MR7

Power Requirement Remarks

ORDER NO.

RRV2250

¶ This product is a system(s) component.

Be sure to connect it to the prescribed system component(s), otherwise damage may result.

Component Model Service manual Remarks

STEREO CD/CD-R RECEIVER XR-MR7 RRV2250 This manual. SPEAKER SYSTEM S-MR7 RRV2248

FOR U.S. MODELS

NECESSARY INFORMATION FOR DHHS RULES MARKED ON THE REAR BASE AND ON THE TOP OF CD MECHANISM AS BELOW.

DANGER – LASER RADIA TION WHEN OPEN. AVOID DIRECT EXPOSURE TO BEAM.

CONTENTS

1. SAFETY INFORMATION

2. EXPLODED VIEWS AND PARTS LIST

.......................................

.................

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM..14

4. PCB CONNECTION DIAGRAM

5. PCB PARTS LIST

6. ADJUSTMENT

................................................

.....................................................

...........................

50 71 81

2 4

7. GENERAL INFORMATION

7.1 DIAGNOSIS

...................................................

7.1.1 DISASSEMBLY

7.1.2 SEQUNCE AFTER THE POWER ON

7.2 PARTS

7.2.1 IC

7.2.2 DISPLAY

.........................................................

...........................................................

................................................

8. PANEL FACILITIES AND SPECIFICATIONS

..................................

........................................

......

.....

91 91 91

96 100 100 103 104

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

c

PIONEER CORPORATION 1999

T – ZZR DEC. 1999 Printed in Japan

XR-MR7

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians ; it is not meant for the casual do-ityourselfer. 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.

WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 – Proposition 65

NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation.

REMARQUE (POUR MODÈLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pièces de remplacement doivent avoir la même désignation.

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5mA.

Reading should not be above

0.5mA

Earth ground

Device under test

Also test with plug reversed (Using AC adapter plug as required)

Leakage current tester

Test all exposed metal surfaces

ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER.

on the schematics and on the parts list

AC Leakage Test

2

XR-MR7

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

LABEL CHECK

MY Type

IMPORTANT

LASER DIODE CHARACTERISTICS MAXIMUM OUTPUT POWER: 23 mW WAVELENGTH: 778 – 787 nm

MY Type

VRW-328

KU/CA Type

Printed on Rear Panel

USYNLIG LASERSTRÅLING VED ÅBNING NÅR SIKKERHED SAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSÆTTELSE FOR STRÅLING

UNSICHTBARE LASER-STRAHLUNG TRITT AUS, WENN DECKEL (ODER KLAPPE) GEÖFFNET IST! NICHT DEM STRAHL AUSSETZEN!

ADVARSEL

VORSICHT!

VRW1094

MY Type

Additional Laser Caution

1. Laser Interlock Mechanism The position of the switch (S601) on the SERVO MECHANISM Assy for detecting loading state is detected by the system microprocessor, and the design prevents laser diode oscillation when the switch (S601) is not on CLMP terminal side (CLMP signal is OFF or high level.). Thus, the interlock will no longer function if the switch (S601) is deliberately set to CLMP terminal side (low level). The interlock also does not function in the test mode ∗. Laser diode oscillation will continue, if pin 1 of M51593FP (IC101) on the PRE-AMP BOARD ASSY mounted on the CD-R PICKUP is connected to GND, or pin 19 is connected to low level (ON), or else the terminals of Q101 are shorted to each other (fault condition).

2. When the cover is opened with the servo mechanism block removed and turned over, close viewing of the objective lens with the naked eye will cause exposure to a Class 1 laser beam.

∗ Refer to page 84.

3

XR-MR7

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

2

14 15

MY:Only

16

17

3

V

K

O

A

L

R A O K

E

4

S

DISC DISC DISC

F

S

C L E E

P

P .B

POWER

C

A

L

S

E

S

A

R D IS P

P L A

G Y

M A U X

R E P E A T

R

A N D O M

S T A

T

REMOTE CONTROL UNIT CU-XR025

IO N

M O

N

O B A N D

12

5

6

13

(1) PACKING PARTS LIST

Mark No. Description Part No.

11

7

8

12

9 (1/2)

9(2/2)

10

1 Power Cord See Contrast table (2)

2 FM Antenna See Contrast table (2) 3 AM Loop Antenna ATB7009 4 Remote Control Unit AXD7241

(CU-XR059)

5 Battery Cover AZA7378

NSP 6 Dry Cell Battery (R6P, AA) VEM-013

7 Packing Sheet AHG7003 8 Front Pad AHA7281 9 Rear Pad LR AHA7282

10 Packing Case See Contrast table (2)

NSP 11 Warranty Card See Contrast table (2)

12 Polyethylene Bag Z21-038

(0.03 x 230 x 340)

13 Operating Instructions See Contrast table (2)

(English)

14 Operating Instructions See Contrast table (2)

(English/French)

15 Operating Instructions See Contrast table (2)

(German/Italian)

16 Operating Instructions See Contrast table (2)

(Dutch/Swedish)

17 Operating Instructions See Contrast table (2)

(2) CONTRAST TABLE

(Portuguese/Spanish)

XR-MR7/MY and /KU/CA are constructed the same except for the following:

Mark

No.

Symbol and Description

MY type KU/CA type

1 Power Cord ADG1127 ADG7021 2 FM Antenna ADH7005 ADH7004

10 Packing Case AHD7849 AHD7848

NSP 11 Warranty Card ARY7022 ARY7033

13 Operating Instructions (E) Not used ARB7213 14 Operating Instructions (E/F) ARE7238 Not used

15 Operating Instructions (G/I) ARE7239 Not used 16 Operating Instructions (D/S) ARC7290 Not used

17 Operating Instructions (P/Sp) ARC7291 Not used

4

Part No.

Remarks

A

D

B

C

A

R

M

K

I

S

G

H

G

F

E

O

P

Q

E

H

F

J

K

L

M

N

B

Q

P

O

S

L

I

C

J

74

71

MY Type Only

44

3

4

61

1

41

42 29

39

37

20

52

53

51

29

51

67

76

43

45

48

45

25

26

47

5

9

38

10

6

7

49

66

65

70

69

77

8

63

64

31

27

28

37

60

15

50

73

51

19

52

53

75

55

53

52

2

30

13

36

33

21

35

12

17

21

18

34

14

16

52

51

22

29

23

24

32

51

40

51

58

59

57

65

58

59

56

62

Refer to "2.6 3CD MICROCHANGER MECHA "

Refer to "2.3 FRONT PANEL SECTION"

Refer to "2.4 CD-R CORE ASSY (1/2)

2.5 CD-R CORE ASSY (2/2) "

11

2.2 EXTERIOR SECTION

XR-MR7

5

XR-MR7

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.

NSP 2 CD-R CORE ASSY PXA1625

1 FM/AM TUNER Module See Contrast table (2) 3 AF ASSY See Contrast table (2)

4 AMP ASSY See Contrast table (2) 5 REG ASSY AWU7468

6 SECONDARY ASSY AWU7451 7 PRIMARY ASSY See Contrast table (2) 8 SUBTRANS ASSY See Contrast table (2) 9 AC IN/OUT ASSY See Contrast table (2)

10 Power Transformer See Contrast table (2) 11 Fuse (FU 2 : ) See Contrast table (2)

12 6P Connector Assy ADE7055 13 Screw BBZ30P080FCC

NSP 14 3CD MICROCHANGER MECH AXA7077

15 27P FFC/30V ADD7203

(DIS CN5601 ↔ AF CN5501)

16 16P FFC/60V ADD7178

(AF CN1101 ↔ 3CD MECHA)

17 21P FFC/60V ADD7200

(AF CN7701 ↔ CDR CN501)

18 15P FFC/60V ADD7201

(AF CN7702 ↔ CDR CN301)

19 9P FFC/60V ADD7205

(AF CN3201 ↔ FRO. CN5403)

20 Fuse (FU 1 : ) See Contrast table (2)

21 Screw BBT30P080FCC 22 2mm Connector ASSY 6P ADE7051

(AF CN1301 ↔ 3CD CN8002)

23 Connector ASSY 11P PG11KK-G20

(AF CN1302 ↔ 3CD CN8003) NSP 24 Mini Clamper VEC1597 NSP 25 Heat Sink ANH7115

26 Heat Plate ANG7266

NSP 27 Chassis ANA7101

28 Leg Assy AEC7248 29 Pla Rivet DEC1704 30 Tray Panel (CD-R) AAK7712

NSP 31 PCB Holder PNW2029

32 Flexible Holder AEC7252 33 CD-R CORE ASSY PYY1273 34 Radiator Sheet PEB1305

NSP 35 PCB Spacer AEC1371

NSP 36 Mecha Base PNB1613

37 PCB Spacer (3x12) AEC1372 38 Screw IBZ40P060FCC 39 Shield Case ANG7272 40 Side Stay ANG7261

41 CD Stay ANG7259 42 CD Sheet AEC7253 43 Rivet (PLASTIC: 3x4.5) RBM–003 44 Tapping Card Spacer AEC7098 45 Card Spacer AEC7214

NSP 46 PCB Spacer AEC7254

47 Rear Panel R See Contrast table (2) 48 Rear Cover AMR7310 49 Bonnet Case R AZN7824 50 Tray Panel (CD) See Contrast table (2)

51 Screw BBZ30P060FCC 52 Screw BBZ30P080FNI 53 Screw BBZ30P080FZK 54 Screw BPZ30P060FMC 55 Terminal Screw AKE- 031

56 Supporter Plate L ANG7290 57 Supporter Plate R ANG7291 58 Screw IPZ30P060FMC 59 Screw PBZ30P120FMC 60 Spacer R AEB7189

61 Tapping Card Spacer AEC7262 62 Harness Lifter DEC1262 63 Fuse Label See Contrast table (2) 64 Fuse Label See Contrast table (2) 65 65 Label See Contrast table (2)

66 Fuse Caution Label See Contrast table (2)

NSP 67 Laser Caution Label See Contrast table (2)

68 Disc Caution Label See Contrast table (2) 69 Caution Label HE See Contrast table (2) 70 Caution Label See Contrast table (2)

71 Ceramic Capacitor See Contrast table (2) 72 Cord Clamper RNH-184

NSP 73 Getter See Contrast table (2)

74 Earth Plate See Contrast table (2) 75 Speaker Caution Label ARW7080

76 LEGATO ASSY See Contrast table (2) 77 Caution Label (F) See Contrast table (2)

6

(2) CONTRAST TABLE

XR-MR7/MY and /KU/CA are constructed the same except for the following:

Mark

No.

1 FM/AM TUNER Module AXQ7068 AXQ7065 3 AF ASSY AWU7460 AWU7448 4 AMP ASSY AWU7464 AWU7555 7 PRIMARY ASSY AWU7469 AWU7457 8 SUBTRANS ASSY AWU7471 AWU7459

9 AC IN/OUT ASSY AWU7470 AWU7458 10 Power Transformer ATS7271 ATS7272 11 Fuse (FU 2 : 4A/125V) Not used REK1082 11 Fuse (FU 2 : T2AL250V) AEK1057 Not used 20 Fuse (FU 1 : 5A/125V) Not used REK1083

20 Fuse (FU 1 : T2.5AL250V) AEK1058 Not used 47 Rear Panel R ANC7880 ANC7879 50 Tray Panel (CD) AAK7746 AAK7715

NSP 63 Fuse Label AAX1581 AAX1419 NSP 64 Fuse Label AAX1580 AAX1194

Symbol and Description

MY type KU/CA type

Part No.

XR-MR7

Remarks

65 65 Label Not used ARW7050

NSP 67 Laser Caution Label Not used PRW1516

66 Fuse Caution Label Not used ARW7081 68 Disc Caution Label Not used PRW1532

69 Caution Label HE PRW1233 Not used 70 Caution Label VRW1094 Not used

71 Ceramic Capacitor CKPUYB102K50 Not used 73 Getter ARW7086 ARW7077 74 Earth Plate XNG3015 Not used 76 LEGATO ASSY AWU7525 Not used

77 Caution Label (F) VRW–328 Not used

7

XR-MR7

2.3 FRONT PANEL SECTION

5

27

6

23

1

PCB Cutting Parts

21

B

19(4/4)

27

11

16 (1/2)

29

A

2

14

13(1/2)

17

A

12(2/2)

27

5

35

22

12(1/2)

27

3

27

31

27

20

30

15

25

33

24

13(2/2)

36

18

19(1/4)

27

B

16 (2/2)

Front Panel Cutting Parts

27

4

19(3/4)

19(2/4)

9

8

26

34

7

28

32

10

8

(1) FRONT PANEL SECTION PARTS LIST

Mark No. Description Part No.

1 H.P ASSY AWU7453 2 DISPLAY ASSY AWU7461 3 SW JOG ASSY AWU7466 4 FRONT LINE ASSY See Contrast table (2) 5 21P FFC/60V ADD7202

6 27P FFC/60V ADD7203 7 Rubber Sheet AEB1111 8 VOL Ring R AAB7219 9 Button RE AAD7559

10 Function Lens PNW2796

XR-MR7

NSP 11 Indicate Lens AAK7085

NSP 22 Button RF AAD7560

NSP 26 Front Panel RK AMB7690

NSP 35 Button Lens MRF AAK7691

12 Button RD AAD7554 13 Button RB AAD7553 14 Button Lens MRB AAK7690 15 Button RA AAD7557

16 Button RC AAD7558 17 LED Lens PNW2745 18 Receiv Lens AAK7586 19 Button RG ASSY AXG7087 20 Button RF ASSY AXG7086

21 FL Plate AAK7718 23 Display Window R AAK7710

24 VOL Knob R AAB7218 25 Jog Knob R AAB7217

27 Screw BPZ30P080FZK 28 Front Panel RK ASSY AXG7091 29 Shield Sheet R AED7041 30 CDR SW ASSY AWU7517

31 5P FFC/60V ADD7204 32 CDR LED ASSY AWU7467 33 Knob R AAB7216 34 Cap AAK7713

(2) CONTRAST TABLE

XR-MR7/MY and /KU/CA are constructed the same except for the following:

Mark

No.

Symbol and Description

MY type KU/CA type

4 FRONT LINE ASSY AWU7450 AWU7438

Part No.

Remarks

9

XR-MR7

2.4 CD-R CORE ASSY (1/2)

• Bottom View

A

18

13

1

20

9

12

7

26

25

Refer to "2.5 CD-R CORE ASSY (2/2)"

23 31

24

19

5

28

26

29

5

30

5

6

21

4

17

8

CD-R CORE ASSY(1/2) PARTS LIST

•

3

A

2

11

16

15

27

22

14

10

Mark No. Description Part No. Mark No. Description Part No.

NSP 1 LOADING A Assy PWZ3760 NSP 2 LOADING B Assy PWZ3761

3 Connector Assy PG02KK-E15

(LOADING B CN551 ↔ LOADING A CN502)

4 DC Motor (LOADING) PXM1027 5 Screw DBA1006

6 Motor Pulley PNW1634 7 Screw VBA1055 8 Tray Stopper Spring VBH1277 9 Rubber Belt VEB1260

10 Loading Base VNL1844 11 Tray VNL1731 12 Gear Pulley VNL1733 13 Loading Gear VNL1734 14 Drive Gear VNL1735

15 Drive Cam VNL1736 16 Lock Plate VNL1820

NSP 28 Earth Lead Unit PDF1200

17 Tray Stopper VNL1739 18 Connector Assy PF03KK-E37

(LOADING A CN501 ↔ CD-R CORE CN451) 19 Screw BBZ26P040FMC 20 Screw Z39-019

21 Loading Motor Assy VXX2505 22 Binder PEC-107 23 Clamper Plate VNE2068 24 Bridge VNE2069 25 Clamper VNL1738

26 Screw IPZ26P060FMC 27 32P Flexible Cable / 30V PDD1195

(CD-R Pickup ↔ CD-R CORE CN101) 29 Tray Holder PNM1341

30 Stopper DNH2076 31 Spacer PNM1334

10

2.5 CD-R CORE ASSY (2/2)

25

17

22

1

20

15

23

9

23

3

7

2

26

4

10

21

16

XR-MR7

CD-R CORE ASSY(2/2) PARTS LIST

•

19

11

18

5

Mark No. Description Part No.

NSP 1 SERVO MECHANISM Assy PWZ3759

2 DC Motor Assy (SPINDLE) PEA1235

NSP 3 DC Motor (CARRIAGE) PXM1042

4 Float Rubber A AEB7063 5 Float Rubber B AEB7066

NSP 6 Rack Spring DBH1285 NSP 7 Reflection Sheet PNM1325

8 Servo Base PNW2853 9 Pinion Gear PNW2854

10 Gear A PNW2855 11 Gear B PNW2856

12 Gear C PNW2857 13 Rack PNW2858 14 Rack Stopper PNW2859

NSP 15 Disc Table PNW2860

16 Carriage Base S PNW2874 17 Connector Assy PG09KK-E17

(SERVO MECHANISM CN601↔CD-R CORE CN452) 18 Guide Bar VLL1488 19 Sub Guide Bar VLL1489

NSP 20 Magnet VYM1024

21 CD-R Pickup PEA1351 22 Screw Z39-018 23 Screw PMZ20P030FMC 24 Screw JGZ17P030FMC

• Bottom View

SERVO MECHANISM ASSY

14

6

13

Carriage Base S

24

22

12

25 Disc Table Assy PEA1349 26 Carriage Motor Assy PEA1350

8

How to Install the Disc Table

Use nippers or other tool to cut the two sections marked A in figure 1 .

1

While supporting the spindle motor shaft with the stopper, put spacer on

2

top of the carriage base, and stick the disc table on top (takes about 9kg pressure). Take off the spacer.

1

A

Spacer

A

Spacer

Servo Base

2

Spacer setting Position

Disc table Assy

(Pressure of about 9kg)

Spacer

Spindle motor

OK NG

Stopper

11mm

2.8mm

Carriage Base

PCB

11

XR-MR7

2.6 3CD MICROCHANGER MECHANISM

*1 : Floil (PN-397) *2 : Dyefree (ME-413A)

*2

(No.36 Sub Tray Part)

38

*2

(Gutter)

*2

(Inside Gutter)

*2 (Bottom Gutter)

36

37

30

29

28

31

*2 (Left Front Under Gutter)

35

*2

(Whole)

34

42

15

33

41

18

39

40 *1

(Gutter)

14

*1

(Column)

*2 (Bottom Gutter)

19

12

13

17

16

*1

(Boss)

32

*1

(Gutter)

*2

(Gutter)

*1 (Gutter)

11

43

*1

(Rail)

8

44

23

*1 (Gutter)

20

27

22

*1

(Inside Rail)

21

26

(Black)

25

(Blue)

4

24

12

9

*1

(Inside Rail)

2

7

3

5

7

6

5

1

10

3CD MICROCHANGER MECHANISM PARTS LIST

•

Mark No. Description Part No.

1 MOTOR UNIT AWU7431 2 LOADING UNIT AWU7432 3 SELECT UNIT AWU7433 4 PICK–UP UNIT KSM213CCM 5 Slider Motor VXM1033

6 Mecha Base ANW7129 7 Motor Pulley PNW1634 8 Lift Spring ABH7173 9 Home Lever ANW7153

10 HL Spring ABH7182 11 Extended Gear A ANW7138

12 Gear A ANW7136 13 Extended Gear B ANW7139 14 Gear B ANW7137 15 Gear Pully ANW7135

16 Select Lever ANW7143 17 EV Camgear ANW7140 18 Belt AEB7159 19 Elevator Base ANW7132 20 Tray Guide ANW7150

XR-MR7

21 TG Stopper ANW7151 22 TG Spring ABH7175 23 Cam Plate ANW7147 24 Lock Lever ANW7148 25 Float Rubber A (Blue) AEB7063

26 Float Rubber B (Black) AEB7066 27 Float Base ANW7130 28 Clamper Holder ANW7152 29 Yoke ANG7257 30 Clamper Magnet AMF7001

31 Clamper SO XNW3007 32 Swing Base ANW7131 33 Main Tray ANW7133 34 Lock Plate ANW7144 35 Lock Plate Spring ABH7174

36 SUB Tray ANW7134 37 Tray Label ARW7070 38 Stopper Arm ANW7145 39 gear Shaft ANW7142 40 Loading Gear ANW7141

41 Elevator ANW7146

NSP 43 MB Spacer AEC7259 NSP 44 MB3 Spacer AEC7263

42 Elevator Cover ANW7149

13

1

23

XR-MR7

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM (1/2)

4

A

AA

AB

(TX)

FM/AM TUNER

Module

3CD MICRO

CHANGER

MECHA.

(AXA7077)

LEGATO

V

ASSY

(AWU7525)

MY : Only

B

LINE IN

TAPE PLAY

TAPE REC

IC1901

(PE8001A)

D/A Converter

6 6

11 11

AF ASSY

I

(CXA2570N)

RF Amp.

(M56788FP)

IC3131

(UPC4570G2)

PHONO EQ

IC1101

IC1301

Driver

1

23 72

43

IC1201

(CXD2587Q)

Servo Decoder

62

7

2

IC3101

(TC9164AF)

SIGNAL

SELECTOR

3

4 5

13

11

10

KU/CA:Only

60

(REC)

CD ANALOG OUT

CD DIGITAL OUT

(CD)

(REC)

DIGITAL IN

(OPTICAL)

CN3201

C

CN5403

9

5

9

5

FRONT LINE ASSY

O

D

1

IC7301

(PMC1800-1)

A / D BLOCK

15

CD-R CORE

B

ASSY : CN501

N

CDR LED ASSY

16

IC7401

(PE8001A)

D / A BLOCK

2

CN5962

CN7701

M

CDR SW ASSY

IC7501

(PE5113B)

MODE µCOM

11-13 44-46

CD-R CORE

B

ASSY : CN301

CN5954

CN7702

CN7703

CD-R ASSY : CN901

B

14

1234

5

678

XR-MR7

(REC)

CN5952

TX

53

CD

55

CDR

54 31

LINE

51 49

(REC)

L

Rotary

Encoder

Rotary

Encoder

CD-R

30, 50

IC3151

(BA4558F-HT)

BUFFER

1 3

SW JOG ASSY

S5966

JOG

S5965

VOL

S5969

DVOL

S5970

AVOL

: AUDIO SIGNAL ROUTE

IC3031

(LC75396NE)

Input Selector, SFC, E-VR

GEQ

IC3081

(M62457AFP)

Spectram Analyzer IC

E-VR

34

8

AD

28

CN3102

CN521

SPEAKER

TERMINAL

CDR

CD

AMP

IC5501

(PD5545A)

System Control Microcomputer

MICOM +5V

CN3001

CN3002

AMP

J

IC3301

(STK407-040B)

Power Amp.

14

24

AMP ASSY

RY3601

7

DC DET.

Overload DET.

CN3101

CN3902

Phones

P

J3901

HP ASSY

Speaker

CN2551

System Connector (CT-J7)

CN5502

Flash Microcomputer ROM Write

BZ5501

Buzzer

A

B

C

CN5953

K

Key Input

DISPLAY ASSY

(BU2092F)

LED Driver

V5601

(AAV7073)

FL TUBE (included Driver)

5

IC5801

PRIMARY ASSY

REG ASSY

U

SECONDARY ASSY

S

Power Supply

Block

Power

Transformer

T

SUBTRANS ASSY

Q

ACINOUT ASSY

R

RY11

FU1

CN1

AC OUTLET MY : Only

AC INLET

D

Standby

Power Supply

Block

Standby

Transformer

15

6

7

8

1

23

XR-MR7

3.2 BLOCK DIAGRAM (2/2 : CD-R)

4

A

Disc (CD, CD-R, CD-RW)

B

PICKUP

PEA1351

CD-R

CN1 CN101

A

10

B

9

C

16

D

15

E

17

F

8

G

14

H

11

FCS+

4

FCS–

1

TRK+

3

TRK–

2

SIGNAL ROUTE

(REC)

: REC SIGNAL (after A/D)

(PB)

: PB OUT (before D/A)

(CD)

: DIGITAL CN INPUT

(LI2)

: DIGITAL LINE 2

(DO)

: DIGITAL OUT : RF SIGNAL ROUTE

CD-R CORE ASSY

B

RF AMP CIRCUIT

A–D

A

10

B

9 16 15 17

8 14 11

4

1

3

2

A–H

C D E F G H

IC181

NJM2137M

6 1

76

73

71 68

RFDC HF

17.2872MHz

19

IC101

AK8563

RF PROCESSOR

58

11 10 29 46

WRF

FE TE RFAC RFWBL

IC251-IC254

RUNNING OPC

CIRCUIT

BLOCK

RFOPC AOUT

IC431

PDK041A

STRATEGY

CONTROL IC

CXD2585Q

CD DECODER

RFDC

43

FE

39

TE

41

RFAC

50

IC401

34.5744MHz

4

17.2872MHz

6

CDLRCK

65

CDBCK

67

CDDATA

66

CDTX

64

LD CONTROL

CIRCUIT

SERVO MECHANISM

C

ASSY

PC651

C

NJL5803K-F1

FG

M

DC MOTOR

ASSY

(SPINDLE)

PEA1235

M

CARRIAGE MOTOR

ASSY (SLIDER)

PEA1350

LOADING B

E

ASSY

CN601

9

3 4

1 2

CN452

FG

SPDL

SL

FG

9

FCS+

3

SPDL

4

2

1

SL

FCS– TRK+ TRK–

SPDL

L

34 35

IC451

32

M56788FP

31

TRK DRIVER

12

FCS DRIVER

13

SLD DRIVER

SPDL DRIVER

9

10

LOADING DRIVER

14 15

TE HF

RFWBL

29

IC201

---

PA9007A

SERVO AMP IC

38

19

FG

IC351

PDJ014A

ATIP

DECODER IC

32 37 39 40

AD0-AD7 Address

CN551

M

LOADING

MOTOR

ASSY

VXX2505

1

LLL

2

CN453

4 5

D

16

1234

5

43 36

AD0-AD7

Address

17.2872MHz CDLRCK CDBCK CDDATA CDTX

AOUT

RFOPC

61 60

IC301

PE5109A

MECHANISM

CONTROL µCOM.

34.5744MHz

7

IC561

BA7082F

VCO IC

76 46 45 44

EFM ENCODER IC

47

X501

16.9344MHz

59

3

IC302

TK11041M-1

TEMPERATURE

SENSOR IC

678

XR-MR7

A

AF ASSY : CN7703

I

CN901

V+ 5D

2 1

48

1 48 30 36 33 35

DIRDATA

V+ U

(DO)

(LI2)

(PB)

(REC)

(CD)

CN301

20 18 19 16 14 13

5 3 2

CN501

DLINE2 DCDIN DITOUT DALRCK DABCK DADATA ADLRCK ADDATA ADBCK

B

AF ASSY : CN7701

I

C

V+ 5A

IC503

LH64256CK-70

D-RAM

Address Data

IC501

LC89585

15 16 17

DIRBCK

DIRLRCK

2 4 43

IC502

AD1893JST

Fs CONVERTER

IC303

PYY1196

(BR93LC46AF)

EEPROM

AF ASSY : CN7702

I

D

17

5

6

7

8

1

XR-MR7

23

4

3.3 OVERALL WIRING DIAGRAM

SELECT

UNIT

A

F

(AWU7433)

J8502

G

J8503

CN8501

H

(AWU7431)

MOTOR UNIT

CN8003

CN1302

PG11KK-G20

DISPLAY ASSY

K

(AWU7461)

CN5901

UNIT

LOADING

(AWU7432)

B

MECHA

(AXA 7077)

CN8002

PICKU UNIT

(KSM213CCM)

ADE7051

CN1301

ADD7178

ADD7203

MY:Only

CN5951

ADD7202

CN5953 CN5954

CDR SW ASSY

M

(AWU7517)

L

(AWU7466)

SW JOG ASSY

3 CD MICRO CHANGER

CN1101

I 1/4- I 4/4

I

AF ASSY (XR-MR7/MY : AWU7460) (XR-MR7/KU/CA : AWU7448)

MY:LEGATO

C

ADD7200

KU/CA:NORMAL

ADD7201

XR-MR7/MY Only

V

LEGATO ASSY (AWU7525)

B 1/5- B 5/5

B

CD-R CORE ASSY (PYY1273)

D

PDD1195

CD-R

(PEA1351)

C

(PWZ3759)

SERVO MECHA

CN601

CN501

D

LOADING

A ASSY

(PWZ3760)

E

ADE7055

CN551

B ASSY

LOADING

(PWZ3761)

18

1234

5

678

XR-MR7

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

CN5952

CN5403

CN3201

ADD7204

I

CN5962

N

(AWU7467)

O

ADD7205

AF ASSY

MY:Only

RDS

CDR LED

ASSY

FRONT LINE

ASSY

(MY : AWU7450)

FRONT LINE

ASSY

(KU/CA : AWU7438)

P

J3901

H. P ASSY

(AWU7453)

CN3101

FM/AM TUNER

AA

AB

MODULE

(MY : AXQ7068)

FM/AM TUNER

MODULE

(KU/CA : AXQ7065)

CN6201

CN6001

CN5001

REGULATOR

ASSY

U

(AWU7468)

A

B

AMP ASSY

J

(MY : AWU7464)

(KU/CA : AWU7555)

T1

CN11

S

CN3002

Q

SUB TRANS

ASSY

(MY : AWU7471)

(KU/CA:AWU7459)

SYSTEM CONNECTOR

FOR CT-J7

5

6

XR-MR7/MY Only

7

R

AC IN/OUT

ASSY

(MY:AWU7470)

(KU/CA:AWU7458)

(MY : ATS7271)

(KU/CA : ATS7272)

PRIMAR ASSY

(MY : AWU7469)

SECONDARY ASSY(AWU7451)

T

MY :

50/60Hz AC220-230V

KU/CA :

60Hz AC120V

AC POWER CORD

MY : ADG1127

KU/CA : ADG7021

19

8

C

(KU/CA : AWU7457)

D

1

23

XR-MR7

3.4 FM/AM TUNER MODULE (For MY Type)

A

RF AMP

OSC

B

4

MIX AMP

BUFFER

IF AMP

FM +B SW

C

AM RF TUNING BLOCK

D

20

AA

1234

PLL

5

678

XR-MR7

A

FM/AM TUNER MODULE

AA

(AXQ7068)

B

AF AMP

REGULATOR

CN6001

J

AF AMP

CN6201

KP200IA14L

C

D

AA

5

6

7

8

21

1

23

XR-MR7

3.5 FM/AM TUNER MODULE (For KU/CA Type)

4

A

B

RF AMP

1T378A

OSC

1T378A

MIX AMP

BUFFER

IF AMP

FM +B SW

C

MW RF TUNING BLOCK AKX7041

D

22

AB

1234

5

678

XR-MR7

FM/AM TUNER MODULE

AB

(AXQ7065)

AF AMP

A

B

CN6001

J

AF AMP

PLL

REGULATOR

CN6201

KP200IA14L

C

D

AB

5

6

7

8

23

1

XR-MR7

3.6 CD-R CORE ASSY (1/5)

23

4

CD-R CORE ASSY (PYY1273)

1/5

• MECHA. CONTROL µCOM BLOCK

B

5/5

B

2/5

A

B

ATIP DECODER

C

3/5

B

D

24

1/5

B

1234

5

8 bit LATCH

678

XR-MR7

A

4/5

B

8 9 10 11 12

MECHA µ-COM

CN301

L302,L305-L309, L311-L315,L318,L319 :OTL1040

I

CN7702

EEPROM

IC303

PYY1196

(BR93LC46F)

C

D

1 2 3 4 5 6 7

1/5

5

6

7

B

8

25

1

23

XR-MR7

3.7 CD-R CORE ASSY(2/5) and CD-R PICKUP

4

A

B

CD-R PICKUP (PEA1351)

B

CD-R CORE ASSY (PYY1273)

2/5

• RF PROCESSOR BLOCK

CN101

CN1

7

8

MULTI PLEXER

C

(REC) (REC)

D

26

2/5

B

1234

(REC) (REC)

(REC)

MULTI PLEXER

(REC)

4

CN102

3

5

678

XR-MR7

: RF SIGNAL ROUTE

(REC)

: AUDIO SIGNAL ROUTE (REC)

3/5

B

1

2

5

B

3/5

A

B

(REC)

RF PROCESSOR

(REC)

6

(REC)

B

3/5

C

1/5

4/5

D

2/5

B

5

6

7

8

27

1

XR-MR7

3.8 CD-R CORE ASSY (3/5)

23

4

B

A

B

CD-R CORE ASSY (PYY1273)

3/5

• SERVO BLOCK

2/5

B

1/5

B

2

5/5

B

C

2/5

B

D

28

3/5

B

1234

5

678

XR-MR7

A

1/5

B

4/5

B

2/5

MULTI PLEXER

B

C

1/5

B

CDR SERVO AMP

1

D

3/5

B

5

6

7

8

29

1

M

XR-MR7

3.9 CD-R CORE ASSY (4/5)

23

4

A

3/5

B

CD-R CORE ASSY (PYY1273)

4/5

• DIGITAL BLOCK

(REC)

D-RA

VCO

(REC)

13

EFM ENCODER IC

2/5

B

C

D

(REC)

17

(REC)

18

(REC)

15

16

14

(REC)

STRATEGY

CONTROL

(REC)

(DI1)

(DI2)

30

1/5

4/5

B

1234

B