Pioneer Keh-p4900 User manual

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 K-ZZB. OCT. 1999 Printed in Japan

ORDER NO.

CRT2398

MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

KEH-P490 X1M/UC

Service

Manual

CONTENTS

1. SAFETY INFORMATION ............................................2

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

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .....9

4. PCB CONNECTION DIAGRAM ................................24

5. ELECTRICAL PARTS LIST ........................................33

6. ADJUSTMENT..........................................................40

7. GENERAL INFORMATION .......................................42

7.1 DISASSEMBLY ...................................................42

7.2 PARTS .................................................................43

7.2.1 IC.................................................................43

7.2.2 DISPLAY .....................................................47

8. OPERATIONS AND SPECIFICATIONS.....................48

KEH-P490/X1M/UC

KEH-P4950 X1M/ES

KEH-P4900 X1M/UC

-This service manual should be used together with the following manual(s):

Model No. Order No. Mech. Module Remarks

CX-1011 CRT2406 3L Cassette Mech. Module:Mech.Description and Greasing, Disassembly, Adjustment

- This service manual does not describe the CD test mode.

For the operations in the CD test mode, refer to the CD player's Service manual.

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KEH-P490,P4900,P4950

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

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1. SAFETY INFORMATION

CAUTION

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.

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

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KEH-P490,P4900,P4950

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NOTE:

-Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List.

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

-Owner's Manual, Installation Manual

Model Part No. Language

KEH-P490/X1M/UC CRD3090 English, French

CRD3091 English, French

KEH-P4900/X1M/UC CRD3088 English, French, Spanish

CRD3089 English, French, Spanish

KEH-P4950/X1M/ES CRD3083 English, Spanish, Portuguese(B)

CRD3084 Chinese, Arabic

CRD3085 English, Spanish, Portuguese(B), Chinese, Arabic

-PACKING SECTION PARTS LIST

Part No.

Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES

* 1 Accessory Assy CEA2350 CEA2350 CEA2350

2 Spring CBH1650 CBH1650 CBH1650

3 Screw Assy CEA2351 CEA2351 CEA2351

4 Screw CBA1304 CBA1304 CBA1304

* 5 Polyethylene Bag CEG-127 CEG-127 CEG-127

6 Screw CRZ50P090FMC CRZ50P090FMC CRZ50P090FMC

7 Screw TRZ50P080FMC TRZ50P080FMC TRZ50P080FMC

* 8 Polyethylene Bag CEG-158 CEG-158 CEG-158

9 Handle CNC5395 CNC5395 CNC5395

10 Bush CNV3930 CNV3930 CNV3930

11 Polyethylene Bag CEG1173 CEG1173 CEG-162

12 Carton CHG3893 CHG3889 CHG3890

13 Contain Box CHL3893 CHL3889 CHL3890

14 Protector CHP2244 CHP2244 CHP2244

15 Protector CHP2243 CHP2243 CHP2243

16-1 Owner’s Manual CRD3090 CRD3088 CRD3083

16-2 Owner’s Manual Not used Not used CRD3084

16-3 Installation Manual CRD3091 CRD3089 CRD3085

* 16-4 Warranty Card CRY1070 CRY1070 Not used

* 16-5 Card Not used ARY1048 Not used

17 Cord assy CDE6222 CDE6222 CDE6222

18 Case assy CXB3520 CXB3520 CXB3520

19 Battery CEX1030 Not used Not used

20 Remote Control Unit CXB4284 Not used Not used

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KEH-P490,P4900,P4950

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2.2 EXTERIOR

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KEH-P490,P4900,P4950

1 Screw BSZ26P050FMC

2 Screw BSZ30P050FMC

3 Screw BSZ30P200FMC

4 Cord Assy CDE6222

5 Fuse(10A) CEK1136

6 Transistor(Q904) 2SD2396

7 Case CNB2350

8 Holder CNC5704

9 Cushion CNM5210

10 Insulator CNM5963

11 Panel CNS5132

12 Tuner Amp Unit See Contrast table(2)

13 Screw BPZ26P080FMC

14 Screw BSZ26P080FMC

15 Screw BSZ26P160FMC

16 FM/AM Tuner Unit See Contrast table(2)

17 Holder CNC6554

18 Pin Jack(CN301) CKB1035

19 Plug(CN603) CKM1270

20 Connector(CN701) CKS3408

21 Connector(CN602) CKS3568

22 Connector(CN601) CKS3581

23 Antenna Jack(CN402) CKX1056

24 Panel CNB2343

25 Holder CNC5399

26 Holder CNC6845

27 Holder CNC7996

28 Heat Sink CNR1505

29 Holder Unit CXB2687

30 Chassis Unit CXB3012

31 IC(IC302) TDA7384

32 Remote Control Unit See Contrast table(2)

33 Cover See Contrast table(2)

34 Button CAC4836

35 Spring CBH1834

36 Spring CBH1835

37 Spring CBH2182

38 Bracket CNC6135

39 Bracket CNC6791

40 Arm CNV4692

41 Arm CNV4693

42 Arm CNV4728

43 Panel Unit CXB4927

44 Door CAT2109

45 Spring CBH1838

46 Screw IMS20P030FZK

47 Detach Grille Assy See Contrast table(2)

48 Screw BPZ20P100FZK

49 Button(DETACH) CAC5789

50 Button(1-6) CAC6239

51 Button(SOURCE) CAC6241

52 Button(+) CAC6242

53 Button(-) CAC6243

54 Button(AUDIO) CAC6245

55 Button(EQ) CAC6247

56 Button(EJECT) CAC6268

57 Button(BAND) CAC6269

58 Spring CBH2103

59 Cover CNS5635

60 Keyboard Unit See Contrast table(2)

61 LCD(LCD1901) CAW1563

62 Connector(CN1901) CKS3580

63 Holder CNC8485

64 Sheet CNM6453

65 Connector CNV5914

66 Lighting Conductor CNV5915

67 Grille Sub Assy See Contrast table(2)

68 Cassette Mechanism ModuleEXK4000

69 Screw ISS26P055FUC

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

(1) EXTERIOR SECTION PARTS LIST

(2) CONTRAST TABLE

KEH-P490/X1M/UC, KEH-P4900/X1M/UC and KEH-P4950/X1M/ES are constructed same except for the

following: Part No.

Mark No. Description KEH-P490/X1M/UC KEH-P4900/X1M/UC KEH-P4950/X1M/ES

12 Tuner Amp Unit CWM7021 CWM7021 CWM7025

16 FM/AM Tuner Unit CWE1467 CWE1467 CWE1486

32 Remote Control Unit CXB4284 Not used Not used

33 Cover CNS4948 Not used Not used

47 Detach Grille Assy CXB5152 CXB4788 CXB4789

60 Keyboard Unit CWM7022 CWM7024 CWM7024

67 Grille Sub Assy CXB5209 CXB5210 CXB5211

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KEH-P490,P4900,P4950

2.3 CASSETTE MECHANISM MODULE

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KEH-P490,P4900,P4950

1 Screw BSZ20P040FMC

2 Washer CBF1037

3 Washer CBG1003

4 Screw EBA1028

5 Screw EBA1037

6 Spring EBH1531

7 Spring EBH1624

8 Spring EBH1625

9 Spring EBH1626

10 Spring EBH1627

11 Spring EBH1628

12 Cord EDD1024

13 Photo-reflector(EGN1) EGN1004

14 Arm ENC1526

15 Lever ENC1530

16 Lever ENC1531

17 Arm ENC1532

18 Frame ENC1533

19 Holder ENC1534

20 Gear ENC1535

21 Arm ENC1536

22 Roller ENR1040

23 Belt ENT1027

24 Collar ENV1508

25 Arm ENV1539

26 Arm ENV1540

27 Gear ENV1544

28 Gear ENV1547

29 Gear ENV1548

30 Worm Wheel ENV1550

31 Lever ENV1551

32 Flywheel ENV1554

33 Gathering PCB ENX1054

34 Switch(S1,S2) ESG1007

35 Deck Unit EWM1023

36 Plug(CN251) CKS3540

37 Gathering PCB ENX1053

38 Motor Unit(M1) EXA1491

39 Motor EXM1028

40 Head Assy(HD1) EXA1506

41 Motor Unit(M2) EXA1580

42 Screw BMZ20P022FMC

43 Bracket ENC1528

44 Chassis Unit EXA1582

45 Pinch Holder Unit EXA1584

46 Pinch Roller ENV1518

47 Pinch Holder Unit EXA1583

48 Pinch Roller ENV1518

49 Reel Unit EXA1585

50 Head Base Unit EXA1586

51 Lever Unit EXA1587

52 Gear Unit EXA1588

53 Motor Unit(Service) EXX1055

54 Washer HBF-179

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

-CASSETTE MECHANISM MODULE SECTION PARTS LIST

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3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

IC2 PA4024A

AMVCC

Q3

Q201 Q202

AM RF/AGC

FM RF

14

10

CF232

25

T31 Q31 CF51

AM IF

BFM/AM TUNER UNIT

7

9

18

6

21

15 13

19

26

25

20 17

FM PROCESSOR

IC1 PA4023B

FM/AM PROCESSOR

23

9

FM MIX FM IF FM IF

CF52 FM IF

CF53

15 17 19 47

41

34

63832

36 16 18

1

FM

OSC

AM

OSC VCC

FMVCC

FMTV

AMIFC

VCO

AMTV

T51

2

FMSD

SD

FMSL

AMSL

31 30 28 40 43

19

TUNER Lch

IC501

PM2006A

PLL

Q909

Q910

Q907

Q908

VCC

29

25

9

4

5

37 38

AMTV

FMTV

AMTV

AMIF

FMVCO

AMVCO

X501

AM FM

Q921

Q920

B.U VDD

Q903

SYSPW

SD

SL

SYSPW

VDD

AVDD

76

53

55 74 68

SL

29

30 FM

AM

SYSTEM

CONTROLLER

PE5086A

IC601(1/2)

PLLDATA

TUN-L

ELECTRONIC VOLUME

PML003AM

IC301 11

10

2

5

6

3

BUS-L1

BUS-L2

TAPE-L

RL

FL

Q310

Q309

MUTE

POWER AMP

TDA7384

IC302

11

15

MUTE STBY

FL

RL

FL+

FL-

RL+

RL-

22 4

9

7

19

17

SYSPW B.U

B.U

SYSPW

Q307

Q904 Q911 Q306

Q905

Q901

Q902

MUTE

8V

REGULATOR

RESET

IC602

S-80734AN

VCC

VDD

1

2

8

5

6

B.U

TX

RX

ASENBO

IP-BUS DRIVER

IC702

CA0008AM

BUSL+

BUSL-

BUS-

BUS+

Q701

Q702

8

1

5

11

7

56

61

1

54 60

1

2

66 65

70

69

37

48

38

MUTE

RESET

BSENS

ASENS

SWVDD

DPDT

KYDT

DSENS

ASEMBO

MCMUTE

STBY

MTL

LOADSW

X1

X2

SYSTEM

CONTROLLER

IC601(2/2)

PE5086A

X601

Q906

BSENS

ASENS ACC

FUSE

10A

IC901

TPD1018F

B REMOTE

51

6

B.U

SYSPW

B.U

STBY

B.U

MUTE

MTL

LOAD 42

63 895

DSENS

Q601

SWVDD

VDD

SW5V

ILL1

KYDT

DPDT

SW5V

VDD SWITCH

5

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4

2

1

3

4

11

9

20

19

8

3

4

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9

20

19

8

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6

2

5

8

7

2

1

FM/AM

ANTENNA

ATUNER AMP UNIT

DDECK UNIT

CKEYBOARD UNIT

853

46

85346

LCD DRIVER

IC1901

PD6278C

DPDT

KYDT

VDD

LCDB

XO

XI

REM

REMOTE CONTROL

SENSOR

IC1902

RS-140

X1901

18

20

56 10

3

1

17

22 23

IC251

CXA2559Q

IC351

PA2020A

EQ AMP

MECHANISM

DRIVER

CN251

CN252

CN254

CN255

CN253

7

5TAPE+B

Lch

17

18

FWD

L-ch

REV

L-ch

37

36

39

18 19

17

315 6

8710

CN256 315 6

S1

LOAD

S2

MODE

EGN1

REEL

SENSE

M

M2

SUB

MOTOR

M1

MAIN

MOTOR

5

2

1

EREEL SENSE PCB

CN602

CN701

IP-BUS

CN402

CN301

CN603

CN601

CN1901

VCK/VDT/VST

PDI/PCK/PDO/PCE

ACC

BACK UP

FRONT-L

SPEAKER

REAR-L

SPEAKER

14

VCC

LOUT

MCMUTE

LDSW

MTL

STBY

1

9

6

2

5

8

7

1B.REMOTE

KEY MATRIX

LCD

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FM/AM TUNER UNIT

KEYBOARD UNIT

DECK UNIT

B

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3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS

LIST”.

A-a A-b

A-b

A-a

Large size

SCH diagram

Guide page

Detailed page

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CEK1136

TUNER AMP UNIT

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FM/AM TUNER UNIT

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A-a A-b

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5678

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KEYBOARD UNIT

DECK UNIT

C

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A-a A-b

2

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1

3

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1

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

14

1234

D

C

B

A

A-a A-b

A-b

KEH-P490,P4900,P4950

CEK1136

TUNER AMP UNIT

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

15

KEH-P490,P4900,P4950

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

3

1

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FM/AM TUNER UN

D1D2 RD39JSRD39JS

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R2

2R2M

D6 MA157

16

KEH-P490,P4900,P4950

1234

D

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B

A

B

3.3 FM/AM TUNER UNIT

- CWE1467(KEH-P490/X1M/UC, KEH-P4900/X1M/UC)

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1

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

17

KEH-P490,P4900,P4950

5678

D

C

B

A

B

ER UNIT

IFC

A

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

18

KEH-P490,P4900,P4950

1234

D

C

B

A

3

1

2

FM/AM TUNER UN

D1D2 RD39JSRD39JS

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- CWE1486(KEH-P4950/X1M/ES)

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1

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Q

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

19

KEH-P490,P4900,P4950

5678

D

C

B

A

R UNIT

IFC

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

20

KEH-P490,P4900,P4950

1234

D

C

B

A

C

3.4 KEYBOARD UNIT

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3

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TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Pioneer KEH-P4900 User manual

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