Pioneer DEHP-4850-MP, DEHP-4850-MPH Service manual

ORDER NO.

CRT3567

DEH-P4850MP/XU/ES

MULTI-CD CONTROL HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER

DEH-P4850MP

DEH-P4850MP DEH-P4850MPH

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

Model No. Order No. Mech. Module Remarks

CX-3164 CRT3583 S10.5COMP1 CD Mech. Module:Circuit Description, Mech. Description, Disassembly

/XU/CN

/XU/GS

/XU/ES

For details, refer to "Important Check Points for Good Servicing".

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

PIONEER ELECTRONICS (USA) 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

PIONEER CORPORATION 2005

K-ZZA. NOV. 2005 Printed in Japan

1234

SAFETY INFORMATION

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

A

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.

- Safety Precautions for those who Service this Unit.

• When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.

Caution:

B

1. During repair or tests, minimum distance of 13cm from the focus lens must be kept.

2. During repair or tests, do not view laser beam for 10 seconds or longer.

C

Danger of explosion if battery is incorrectly replaced. Replaced only with the same or equivalent type recommended by the manufacture. Discord used batteries according to the manufacture's instructions.

- CD Section Precaution

D

1. You should conform to the regulations governing the product (safety, radio and noise, and other regulations), and should keep the safety during servicing by following the safety instructions described in this manual.

2. Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors during power-on mode may damage the ICs inside the unit.

3. To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment (shorting-solder) by referring to "the DISASSEMBLY".

E

4. After replacing the pickup unit, be sure to check the grating.

CAUTION

F

2

1234

DEH-P4850MP/XU/ES

5678

[Important Check Points for Good Servicing]

In this manual, procedures that must be performed during repairs are marked with the below symbol. Please be sure to confirm and follow these procedures.

1. Product safety

Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by following the safety instructions described in this manual.

1 Use specified parts for repair.

Use genuine parts. Be sure to use important parts for safety.

2 Do not perform modifications without proper instructions.

Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as radio/TV interference and foreign noise.

3 Make sure the soldering of repaired locations is properly performed.

When you solder while repairing, please be sure that there are no cold solder and other debris. Soldering should be finished with the proper quantity. (Refer to the example)

4 Make sure the screws are tightly fastened.

Please be sure that all screws are fastened, and that there are no loose screws.

5 Make sure each connectors are correctly inserted.

Please be sure that all connectors are inserted, and that there are no imperfect insertion.

6 Make sure the wiring cables are set to their original state.

Please replace the wiring and cables to the original state after repairs. In addition, be sure that there are no pinched wires, etc.

7 Make sure screws and soldering scraps do not remain inside the product.

Please check that neither solder debris nor screws remain inside the product.

8 There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

Damaged power cords may lead to fire accidents, so please be sure that there are no damages. If you find a damaged power cord, please exchange it with a suitable one.

9 There should be no spark traces or similar marks on the power plug.

When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure connections and suitable usage. Please exchange the power cord if necessary.

0 Safe environment should be secured during servicing.

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries. Please pay attention to your surroundings and repair safely.

A

B

C

D

2. Adjustments

To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification. Adjustments should be performed in accordance with the procedures/instructions described in this manual.

3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance. Make sure the proper amount is applied.

4. Cleaning

For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper cleaning should be performed to restore their performances.

5. Shipping mode and Shipping screws

To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual.

56

DEH-P4850MP/XU/ES

E

F

7

8

3

1234

1. SPECIFICATIONS

A

B

C

D

E

56

DEH-P4850MP/XU/ES

F

7

8

5

1234

A

B

C

D

E

F

6

1234

DEH-P4850MP/XU/ES

5678

A

B

C

D

E

56

DEH-P4850MP/XU/ES

F

7

8

7

N

1234

2. EXPLODED VIEWS AND PARTS LIST

OTES : • Parts marked by " * " 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.

A

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

• Screw adjacent to mark on the product are used for disassembly.

• For the applying amount of lubricants or glue, follow the instructions in this manual. (In the case of no amount instructions,apply as you think it appropriate.)

2.1 PACKING

"

B

C

D

4

(1) PACKING SECTION PARTS LIST

No. Description Part No.

Mark

1 Polyethylene Bag CEG-162 2 Cord Assy XDE7008 3 Accessory Assy CEA4850

E

4 Case Assy CXB3520 5 Screw Assy CEA3849

6 ••••• 7 Screw CBA1650 * 8 Polyethylene Bag CEG-127 9 Screw CRZ50P090FTC 10 Screw TRZ50P080FTC

* 11 Polyethylene Bag CEG-158

F

12 Handle CNC5395

13 ••••• 14 •••••

8

1234

Mark

15 Bush CNV3930

16 Remote Control Assy CXC5719 * 17 Battery CEX1065 18 Carton See Contrast table(2) 19 Contain Box See Contrast table(2) 20 Protector YHP5008

21 Protector YHP5009 22-1 Owner's Manual See Contrast table(2) 22-2 Owner's Manual See Contrast table(2) 22-3 Installation Manual See Contrast table(2) 22-4 Caution Card CRP1310

* 22-5 Warranty Card See Contrast table(2)

DEH-P4850MP/XU/ES

No. Description Part No.

5678

(2) CONTRAST TABLE

DEH-P4850MP/XU/ES , DEH-P4850MP/XU/CN and DEH-P4850MPH/XU/GS are constructed the same except for the following:

Mark No. Description DEH-P4850MP/XU/ES DEH-P4850MP/XU/CN DEH-P4850MPH/XU/GS

18 Carton YHG5079 YHG5082 YHG5080 19 Contain Box YHL5056 YHL5059 YHL5057 22-1 Owner's Manual YRD5039 YRB5018 YRD5041 22-2 Owner's Manual YRD5040 Not used Not used 22-3 Installation Manual YRD5044 YRB5020 YRD5045

* 22-5 Warranty Card Not used ARY7046 Not used

Owner's Manual,Installation Manual

Part No. Language

A

YRD5039 English, Spanish, Portuguese(B)

YRD5040 Traditional Chinese, Arabic

YRD5044 English, Spanish, Portuguese(B),Traditional Chinese, Arabic

YRB5018,YRB5020 Traditional Chinese

YRD5041,YRD5045 English,Traditional Chinese, Arabic

B

C

D

56

DEH-P4850MP/XU/ES

E

F

7

8

9

1234

2.2 EXTERIOR

A

13

56 72

70

A

73

76

64

59

66

21

30

16

9

71

61

69

21

31

D

62

7

74

60

67

58

65

24

63

57

18

80

22

23

28

17

57

35

45

35

B

C

D

54

34

48

19

81

26

47

36

81

B

84

19

52

82

51

59

25

79

29

B

43

42

53

44

37

3

39

40

41

38

3

83

4

35

46

50

32

27

57

35

A

75

55

68

77

C

33

20

15

12

8

E

B

2

10

F

10

11

1234

14

C

5

6

A

78

2

DEH-P4850MP/XU/ES

5

1

5678

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 Screw ASZ26P050FTC 2 Screw BMZ30P040FTB 3 Screw BSZ26P060FTC 4 Screw BSZ30P060FTC 5 Screw BSZ30P200FTC

6 Holder CNC8659 7 Earth Plate CNC8915 8 Insulator CNM7682 9 Cushion CNM8890 10 Remote Control Assy CXC5719

11 Cover CNS7068 12 CD Mechanism Module(S10.5) CXK5750 13 Cord Assy XDE7008 14 Insulator XNM7100 15 Cable YDE5013 16 Case YNB5008

17 Panel See Contrast table(2) 18 Tuner Amp Unit Contrast table(2) 19 Screw ASZ26P060FTC 20 Screw BPZ26P080FTC

21 Screw BSZ26P160FTC > 22 Fuse(10 A) CEK1208 23 Pin Jack(CN353) Contrast table(2) 24 Plug(CN901) CKM1376 25 Plug(CN801) CKS3537

26 Connector(CN701) CKS3834 27 Connector(CN101) CKS5271 28 Antenna Jack(CN401) CKX1056 29 Holder CND1352

30 FM/AM Tuner Unit CWE1952

31 Holder CND1054 32 Holder Contrast table(2) 33 Heat Sink YNR5004 34 Detachable Assy Contrast table(2) 35 Screw BPZ20P100FTB

36 Spring CBH2210 37 Knob(SOURCE,VOLUME) YAA5006 38 Button(OPEN) Contrast table(2) 39 Button(EQ) YAC5068 40 Button(BAND) YAC5069

Mark No. Description Part No.

50 Spacer YNM5016

51 Connector YNV5030 52 Lighting Conductor YNV5032 53 Grille Unit Contrast table(2) 54 Button Unit 55 Button(EJECT) CAC7752

56 Screw(M2 x 4) CBA1649 57 Screw(M2 x 4.5) CBA1925 58 Washer CBF1038 59 Spring CBH2650 60 Spring CBH2651

61 Spring CBH2652 62 Spring CBH2653 63 Spring CBL1512 64 Holder CND1254 65 Pin CNV6486

66 Arm CNV7400 67 Arm CNV7401 68 Arm CNV7402 69 Arm CNV7403 70 Holder Unit CXB9501

71 Holder Unit CXB9502 72 Damper Unit CXB9503 73 Gear YNV5053 74 Panel Unit YWM5099 75 Connector(CN1901) CKS4806

76 Connector(CN1902) CKS5192 77 Sub Panel Unit YXA5160 78 Chassis Unit YXA5131 79 IC(IC1801) TSOP4840SB1

80 IC(IC301) PAL007B

81 Transistor(Q702,Q911) 2SD2396 82 IC(IC921) NJM2388F84 83 Sheet Contrast table(2) 84 Sheet Contrast table(2)

(UP,DOWN,LEFT,RIGHT)

Contrast table(2)

A

B

C

D

E

41 Button(1-6) Contrast table(2) 42 Button(AUDIO,FUNCTION,SW) Contrast table(2) 43 Button(CLOCK,DISPLAY) Contrast table(2) 44 Spring YBH5003 45 Cover YNS5113

46 Connector(CN1801) CKS5207 47 LCD(LCD1801) Contrast table(2) 48 Holder YNC5013 49 Sheet YNM5015

56

DEH-P4850MP/XU/ES

F

7

8

11

1234

(2) CONTRAST TABLE

DEH-P4850MP/XU/ES , DEH-P4850MP/XU/CN and DEH-P4850MPH/XU/GS are constructed the same except for the following:

Mark No. Description DEH-P4850MP/XU/ES DEH-P4850MP/XU/CN DEH-P4850MPH/XU/GS

A

17 Panel YNS5114 YNS5157 YNS5156 18 Tuner Amp Unit YWM5097 YWM5093 YWM5089 23 Pin Jack(CN353) CKB1051 CKB1057 CKB1057 32 Holder YNC5014 YNC5019 YNC5019 34 Detachable Assy YXA5110 YXA5108 YXA5106

38 Button(OPEN) YAC5067 YAC5067 YAC5099 41 Button(1-6) YAC5070 YAC5070 YAC5100 42 Button

43 Button

B

47 LCD(LCD1801) YAW5051 YAW5051 YAW5060

53 Grille Unit YXA5157 YXA5156 YXA5158 54 Button Unit

(AUDIO,FUNCTION,SW)

(CLOCK,DISPLAY)

(UP,DOWN,LEFT,RIGHT) 83 Sheet Not used CNM9404 Not used 84 Sheet Not used Not used YNM5017

YAC5072 YAC5096 YAC5095

YAC5073 YAC5098 YAC5097

YXC5022 YXC5025 YXC5024

C

D

E

F

12

1234

DEH-P4850MP/XU/ES

5678

A

B

C

D

E

56

DEH-P4850MP/XU/ES

F

7

8

13

1234

2.3 CD MECHANISM MODULE

A

B

C

D

E

F

14

1234

DEH-P4850MP/XU/ES

5678

CD MECHANISM MODULE SECTION PARTS LIST

Mark No. Description Part No.

1 CD Core Unit(S10.5COMP1) CWX3176 2 Connector(CN101) CKS4808 3 Connector(CN901) CKS5284 4 Screw BMZ20P025FTC 5 Screw BSZ20P040FTC

6 Screw(M2 x 3) CBA1511 7 Screw(M2 x 4) CBA1835 8 Washer CBF1038 9 ••••• 10 Spring CBH2609

11 Spring CBH2612 12 Spring CBH2614 13 Spring CBH2616 14 Spring CBH2617 15 Spring CBH2620

16 Spring CBH2855 17 Spring CBH2937 18 Spring CBH2735 19 Spring CBH2854 20 Spring CBH2642

21 Spring CBH2856 22 Spring CBH2857 23 Spring CBH2860 24 Spring CBH2861 25 Spring CBL1686

26 Arm CND1909 27 Frame CND2582 28 Bracket CND2583 29 Arm CND2584 30 Lever CND2585

Mark No. Description Part No.

50 Rack CNV8342

51 Roller CNV8343 52 Holder CNV8344 53 Arm CNV8345 54 Guide CNV8347 55 Arm CNV8348

56 Arm CNV8349 57 Arm CNV8350 58 Clamper CNV8365 59 Arm CNV8386 60 Guide CNV8396

61 Arm CNV8413 62 Collar CNV8447 63 Motor Unit(M2) CXC4026 64 Arm Unit CXC4027 65 Chassis Unit CXC4028

66 Gear Unit CXC4029 67 Frame Unit CXC4031 68 Motor Unit(M1) CXC6742 69 Screw Unit CXC6359 70 Screw JFZ20P020FTC

71 Screw JGZ17P022FTC 72 Washer YE20FTC 73 Pickup Unit(P10.5)(Service) CXX1942 74 Screw IMS26P030FTC

A

B

C

D

31 Arm CND2586 32 Bracket CND2587 33 Arm CND2588 34 Lever CND2589 35 Holder CNV7201

36 Gear CNV7207 37 Gear CNV7208 38 Gear CNV7209 39 Gear CNV7210 40 Gear CNV7211

41 Gear CNV7212 42 Rack CNV7214 43 Arm CNV7216 44 Roller CNV8189 45 Gear CNV7219

46 Guide CNV7361 47 Gear CNV7595 48 Guide CNV8448 49 Arm CNV7805

56

DEH-P4850MP/XU/ES

E

F

7

8

15

T

2 B

1234

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

ANTENNA

B

C

TUNER AMP UNIT

A

FM/AM TUNER UNIT

CN401

1

2

1

3

AM ANT

FM ANT

ATT

ANT adj

FMRF

RF adj

VDD5

TUNPDI

VDD_3.3

SL

3.3V

VDD_3.3V VCC8

TUNPCK

DI

CK

IC 5

←

5V 3.3V

IC 4

3.3V 2.5V

NC

CE1

←

2.5V

76 13 5 1098 11 14 18192021

NC

CE2

ROM_VDD

IC 3 EEPROM

5.0V

OSC

LPF

IC 1

3.3V

MIXER, IF AMP

T51

CF52

RFGND

OSCGND

DGND

212 152216 4 17

AUDIOGNDNCVCC

TUNPDO

NCNCNC

DO

NC

IC 2

2.5V

DET, FM MPX

Rch

24

Lch

23

TUNL

2

5

4

1

CN101

BUSL−

11

BUSL+

7

Q101

B14

8

IP_BUS

B−

5

VDD

1

16

11

10

8

VD

1

2

9

B+

CN701

LOUT

VDD5

/RESET

BRST,BRXEN,BSRQ,BDATA,BSCK

VD

VDCONT

D

PICKUP UNIT (P10.5)(SERVICE)

LASER DIODE

MONITOR

DIODE

HOLOGRAM

FOCUS ACT.

TRACKING ACT.

UNIT

VREF

FOM

TOM

LD-

MD

FOP TOP

LD+

E

SPINDLE

M

MOTOR

CARRIAGE

LOAD/

MOTOR

M

F

CD CORE UNIT(S10.5COMP1)

C

D

F,E

S905

8EJ

4

NJM2886DL3-33

V3R3D

142

LD

143

PD

133

REFOUT

DIGITAL SERVO / DATA PROCESSOR

TD,FD

12

FOM

11

FOP

14

TOP

13

TOM

BA5835FP

16

SOP

15

SOM

18

LCOP

17

LCOM

S903

DSCSNS

IC203

CN101

15

Q101

5

REFO

88

AC,BD

FOM

33

FOP

2

TOP

1

TOM

44 14

14

S904 12EJ

V3R3D

+3.3V REGULATOR

IC201

UPD63763CGJ

RF-AMP,CD DECODER, MP3 , WMA, DECODER,

SD,MD

CD

DRIVER

IC301

21

41

CLCONT

22

40

LOEJ

9

47

CONT

32 31 30

42

S901

HOME

1

3

LOCK/RFOK

56

XRST,XASTB,ADO,XCK,

63

LOCK

/CD3VON

RESET

CLCONT

CDMUTE

LOEJ

IC701

CONT

PE5505A

CD CONTROLLER

12EJ 8EJ DSCSNS

HOME

VDCONT

CD3VON

46

VD

31

LOUT

34

XTAL

35

/XTAL

XSO,XSI,WAIT,XINT

SWVDD

43 14 39

BRST,BRXEN,BSRQ

BDATA,BSCK

12

X1

X701

4.00MHz

13

X2

49

X201

16.93MHz

VDD

Q701

VD

CN901

LOUT

/RESET

CDMUTE

VDCONT

Q102

B.UP

ASENBO

1

5 6

IC 101

HA12241FP

2

852

40

ASENBO

30

TX

29

RX

27

RX2 IPPW

SYSTEM CON

IC 601(2/

PEG155

21

CDRST

Q702

34

Q701

5

2

B.UP

16

1234

DEH-P4850MP/XU/ES

5678

A

CN351

2

RESET

12

IC 961

BD4843G

VDD5

SWL

Q351

TUNL

40

ASENBO

30

TX

29

RX

27

RX2

52

IPPW

SYSTEM CONTROLLER

IC 601(2/2)

PEG155B

TUNPDO

68

TUNPDI

86

TUNPCK

67

CE1

66

CE2

65

ELECTRONIC VOLUME/

SOURCE SELECTOR

2

IN2−_L

5

IN4−_L

4

IN4+_L

1

IN1_L

IC 151

PML015A

VCK, VDT, VST

53

MUTE

48

SYSPW

26

PEE

FRONT_L

PRE/SW_L

REAR_L

12

RESET

TPDI

TPDO

TPCK TUNPCE1 TUNPCE2

SYSTEM CONTROLLER

IC 601(1/2)

PEG155B

6

12

7

BUZZ

BZ601

DALMON

BSENS

ASENS

B.UP

CN353

2

RCFL

Q353

VDD5V REG.

VDD5

47

19

20

BSENS

ASENS

Q911

Q912

BACKUP SENSE

Q931

DEH-P4850MP/ES only

B.UP

ACC

CN901

B

FUSE

1

10A

3

BACK UP

ACC

ACC SENSE

GND

FLFL+ RL-

RL+

B. REM

C

MUTE

Q453

Q451

VCC8

VDD_3.3V

14

FLIN

12

RLIN

22

MUTE

TUN3V REG.

IC 401

NJM2885DL1-33

AMP

VCC VCC

IC 301

PAL007B

STBY

4

20

B.REM

SYS 8V REG.

NJM2388F84

6

FL− FL+ RL− RL+

IC 921

4

SYSPW

B.UP

2

BREM

FL− FL+ RL− RL+

10

12

9

11

6

23 21 3 5

25

1213

B.UP

SYSPW

D

13

XOUT

X601

15

XIN

Q841

ILMB+

Q802

Q851

8

EJECT

14

FLPILM

12

SWVDD

10

SSENS

9

ROT1

6

ROT0

5

CSENS

13

DPDT

4

KYDT

3

B.UP

Q842

1

ILMPW

2

21

CDRST

EJTIN

FLPILM

SWVDD

SSENS

ROT1

ROT0

CSENS

DPDT

KYDT

DSENS

B.UP

Q801

6

VDD5

Q852

7

92

3

4

93

35

36

S801

18

56

PANEL UNIT

D

8

14

12

10

9

6

5

13

4

3

ILMB+

S1901

DGND DGND

EJECT

SWVDD

SSENS

ROT1 ROT0

CSENS CSENS

DPDT

KYDT

SWVDD

S1827

VOLUME

PUSH:SOUCE

4

1 2

D1804-D1826

CN1801CN801 CN1902 CN1901

ILM

10

11

5

SSENS

3

ROT1

6

ROT0

8

12

DPDT

9

KYDT

11

DEH-P4850MP/XU/ES

SWVDD

S1801

1

S1807

LEFT

S1811

4

S1815

5

REM.CON.

3

IC1802

TSOP4840SB1

50

SI

49

SO

46

V3

47

VDD

7

KEY MATRIX

S1803

S1804

DOWN

S1808

S1812

SW/BB

S1816

1

KEY CONTROLLER

3

EQ

57

REM

LCD DRIVER/

IC 1801

PD6538A

2

S1809 AUDIO

S1813 RIGTH

S1817 CLOCK

KEY DATA

KEYBOARD UNIT

B

S1805

S1806

BAND

DISP

S1810

UP

S1814 FUNC

S1818

6

54

X0

X1801 5MHz

55

X1

LCD1801

8

E

F

17

1234

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

A-a A-b

A-a

A-b

Large size

SCH diagram

Guide page

FM:-24dBs AM:-24dBs

C

CN901

1 2 3 4

A-b

Detailed page

471/16

CD:0.35dBs

FM/AM TUNER UNIT

A-a

B

C

15.000MHz

XIN

VSS

VCC

CD-RESET

NC NC

D

XOUT

VCC

VSS

CE2

CE1

TUNPCK

TUNPDI

E

F

A D

18

IP-Bus:2.21dBs

B

CN1801

EJECT

DSEN

PANEL UNIT

D

DEH-P4850MP/XU/ES

1234

5678

A

A-b

15.000MHz

VSS

XOUT

1 2 3 4

TUNER AMP UNIT

A

B

ES

>

3A

FM,AM:-2.9dBs CD:10.45dBs IP-Bus:10.31dBs

471

C

332/16

AVCC VREF

AVSS

600µH

CEK1208 10A

>

TUNPCK

TUNPDI

DSENS

TUNPDO

NOTE :

Symbol indicates a resistor. No differentiation is made between chip resistors and discrete resistors. Symbol indicates a capacitor. No differentiation is made between chip capacitors and discrete capacitors.

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.

471/16

FM,AM:23.1dBs CD:36.45dBs IP-Bus:36.31dBs

For resistors and capacitors in the circuit diagrams, their resistance values or capacitance values are expressed in codes:

Ex. *Resistors Code Practical value 123 12k ohms 103 10k ohms

*Capacitors Code Practical value 103 0.01uF 101/10 100uF/10V

D

E

F

56

DEH-P4850MP/XU/ES

A

7

8

19

1234

AVSS

VREF

A

AVCC

TUNPDO

B

C

A-b

1 2

CD:0.35dBs

CN901

C

471/16

15.000MHz

XOUT

VSS

XIN

VCC

CD-RESET

NC

A-b

A-a

D

E

FM:-24dBs

AM:-24dBs

FM/AM TUNER UNIT

F

A-a

20

1234

DEH-P4850MP/XU/ES

5678

TUNPDO

3 4

TUNPDI TUNPCK CE1 CE2 VSS

VCC

NC

A-b

DSENS

A

B

C

IP-Bus:2.21dBs

B

CN1801

EJECT

A-b

A-a

PANEL UNIT

D

E

56

DEH-P4850MP/XU/ES

F

A-a

7

8

D

21

1234

A

>

CEK1208 10A

600µH

ES

>

3A

332/16

B

TUNER AMP UNIT

A

C

471

A-b

A-a

471

D

471

E

F

A-b

22

FM,AM:-2.9dBs

CD:10.45dBs

IP-Bus:10.31dBs

AVSS

VREF

AVCC

TUNPDO

1 2

DEH-P4850MP/XU/ES

1234

>

5678

A

B

FM,AM:23.1dBs

CD:36.45dBs

471/16

IP-Bus:36.31dBs

For resistors and capacitors in the circuit diagrams, their resistance

values or capacitance values are expressed in codes:

Ex. *Resistors

Code Practical value

123 12k ohms

103 10k ohms

*Capacitors

Code Practical value

103 0.01uF

101/10 100uF/10V

C

A-b

A-a

D

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

Symbol indicates a resistor.

No differentiation is made between chip resistors and

discrete resistors.

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and

discrete capacitors.

NOTE :

identical designation.

E

TUNPDO

3 4

DEH-P4850MP/XU/ES

56

F

A-b

DSENS

7

8

23

Pioneer DEHP-4850-MP, DEHP-4850-MPH Service manual

SAFETY INFORMATION

CONTENTS

1. SPECIFICATIONS

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

2.2 EXTERIOR

2.3 CD MECHANISM MODULE

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)