PIONEER DEH-P4750MP, DEH-P4770MP, DEH-P4790MP Service Manual

ORDER NO.

CRT3401

DEH-P4750MP/XM/GS

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

DEH-P4750MP/XM/GS

DEH-P4790MP/XM/ID

DEH-P4770MP/XM/CS

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

Model No.	Order No.					Mech.Module					Remarks
CX-3158	CRT3394					S10.1AAC					CD Mech. Module : Circuit Description, Mech. Description, Disassembly

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 2004

K-ZZA. DEC. 2004 Printed in Japan

1

2

3

4

SAFETY INFORMATION

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

AQualified 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.

CAUTION

Danger of explosion if battery is incorrectly replaced.

BReplaced only with the same or equivalent type recommended by the manufacture. Discord used batteries according to the manufacture's instructions.

- Service Precaution

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

C

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".

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

D

E

F

2		DEH-P4750MP/XM/GS
1	2		3	4

5

6

7

8

[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.

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.

A

B

C

D

E

F

		DEH-	P4750MP/XM/GS				3
5	6				7	8

	1	2	3	4
	CONTENTS
	SAFETY INFORMATION.....................................................................................................................................			2
	1. SPECIFICATIONS ............................................................................................................................................			5
A	2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................			8
	2.1 PACKING			8
	2.2 EXTERIOR...............................................................................................................................................			10
	2.3 CD MECHANISM MODULE.....................................................................................................................			14
	3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..........................................................................................			16
	3.1 BLOCK DIAGRAM ...................................................................................................................................			16
	3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)..............................................................................			18
	3.3 KEYBOARD UNIT....................................................................................................................................			24
	3.4 CD MECHANISM MODULE(GUIDE PAGE) ............................................................................................			26
	4. PCB CONNECTION DIAGRAM .....................................................................................................................			36
	4.1 TUNER AMP UNIT...................................................................................................................................			36
	4.2 KEYBOARD UNIT....................................................................................................................................			40
B	4.3 CD CORE UNIT(S10.1) ...........................................................................................................................			42
	4.4 PANEL UNIT ............................................................................................................................................			44
	5. ELECTRICAL PARTS LIST ............................................................................................................................			45
	6. ADJUSTMENT ...............................................................................................................................................			50
	6.1 CD ADJUSTMENT...................................................................................................................................			50
	6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT ....................................................			52
	6.3 ERROR MODE ........................................................................................................................................			54
	6.4 SYSTEM MICROCOMPUTER TEST PROGRAM ...................................................................................			55
	7. GENERAL INFORMATION.............................................................................................................................			56
	7.1 DIAGNOSIS .............................................................................................................................................			56
	7.1.1 DISASSEMBLY .....................................................................................................................................			56
C	7.1.2 CONNECTOR FUNCTION DESCRIPTION..........................................................................................			59
	7.2 PARTS......................................................................................................................................................			60
	7.2.1 IC ..........................................................................................................................................................			60
	7.2.2 DISPLAY ...............................................................................................................................................			68
	7.3 OPERATIONAL FLOW CHART ...............................................................................................................			69
	7.4 CLEANING...............................................................................................................................................			70
	8. OPERATIONS ................................................................................................................................................			71

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E

F

4		DEH-P4750MP/XM/GS
1	2		3	4

5

6

7

8

1. SPECIFICATIONS

A

B

C

D

E

F

		DEH-	P4750MP/XM/GS				5
5	6				7	8

1

2

3

4

A

B

C

D

E

F

6		DEH-P4750MP/XM/GS
1	2		3	4

5

6

7

8

A

B

C

D

E

F

		DEH-	P4750MP/XM/GS				7
5	6				7	8

1	2	3	4
2. EXPLODED VIEWS AND PARTS LIST
NOTES : • Parts marked by " * " are generally unavailable because they are not in our Master Spare Parts List.

• The > mark found on some component parts indicatesthe 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 lobricants or glue, follow the instructions in this manual. (In the case of no amount instructions,apply as you think it appropriate.)

2.1PACKING

B

C

D

E

F

8		DEH-P4750MP/XM/GS
1	2		3	4

		5	6			7	8
(1) PACKING SECTION PARTS LIST
Mark No.		Description	Part No.	Mark No.		Description	Part No.
	1	Polyethylene Bag	CEG-162		14	•••••
	2	Cord Assy	XDE7008		15	Bush	CNV3930	A
	3	Accessory Assy	CEA4850
	4	•••••			16	Remote Control Unit	CXC3173
	5	Screw Assy	CEA3849	*	17	Battery	CEX1065
					18	Carton	See Contrast table(2)
	6	•••••			19	Contain Box	See Contrast table(2)
	7	Screw	CBA1650		20	Protector	XHP7003
*	8	Polyethylene Bag	CEG-127
	9	Screw	CRZ50P090FTC		21	Protector	XHP7004
	10	Screw	TRZ50P080FTC		22-1	Owner's Manual	See Contrast table(2)
					22-2	Installation Manual	See Contrast table(2)
*	11	Polyethylene Bag	CEG-158		22-3	Caution Card	CRP1310	B
	12	Handle	CNC5395		23	Case Assy	CXB3520

13•••••

(2)CONTRAST TABLE

DEH-P4750MP/XM/GS, DEH-P4790MP/XM/ID and DEH-P4770MP/XM/CS are constructed the same except for the following:

Mark	No.		Description	DEH-P4750MP/XM/GS	DEH-P4790MP/XM/ID	DEH-P4770MP/XM/CS
	18	Carton		CHG5424	CHG5428	CHG5425
	19	Contain Box		CHL5424	CHL5428	CHL5425
	22-1	Owner's Manual		CRD3949	CRD3949	CRD3951	C
	22-2	Installation Manual		CRD3950	CRD3950	CRD3952
Owner's Manual,Installation Manual
Part No.				Language
CRD3949			English, Traditional Chinese, Arabic
CRD3950			English, Traditional Chinese, Arabic
CRD3951			English, Spanish, Portuguese(B)
CRD3952			English, Spanish, Portuguese(B)

D

E

F

		DEH-	P4750MP/XM/GS				9
5	6				7	8

1

2

3

4

2.2 EXTERIOR

A

B

C

D

E

F

10		DEH-P4750MP/XM/GS
1	2		3	4

5

6

7

8

(1) EXTERIOR SECTION PARTS LIST

Mark No.	Description	Part No.
1	Screw	BMZ30P040FZK
2	Screw	BSZ26P060FTC
3	Screw	BSZ30P060FTC
4	Screw	BSZ30P200FTC
5	Cable	CDE7189
6	Case	CNB2793
7	Earth Plate	CNC8915
8	Insulator	CNM7682
9	Cushion	CNM8890
10	Tuner Amp Unit	See Contrast table(2)
11	Screw	ASZ26P060FTC
12	Screw	BPZ26P080FTC
13	Screw	BSZ26P160FTC
> 14	Fuse(10A)	CEK1208
15	FM/AM Tuner Unit	CWE1646
16	Holder	CND1054
17	Pin Jack(CN351)	See Contrast table(2)
18	Plug(CN981)	CKM1376
19	Connector(CN101)	CKS3408
20	Plug(CN831)	CKS3537
21	Connector(CN721)	CKS3837
22	•••••
23	Antenna Jack(CN401)	CKX1056
24	Holder	CND1352
25	Heat Sink	CNR1668
26	Terminal(CN402)	VNF1084
27	Holder	See Contrast table(2)
28	Insulator	XNM7031
29	Holder Unit	CXB6681
30	Chassis Unit	CXB9528
31	Remote Control Unit	CXC3173
32	Cover	CNS7068
33	Detach Grille Assy	See Contrast table(2)
34	Screw	BPZ20P100FZK
35	Button(SOURCE)	CAC9008
36	Button(BAND)	CAC9009
37	Spring	CBL1470
38	LCD(LCD1)	See Contrast table(2)
39	Connector(CN1)	CKS5207
40	Holder	CND2510
41	Sheet	CNM9287
42	Lighting Conductor	CNV8274
43	Connector	CNV8275
44	Cushion	XNM7049
45	Sub Grille Assy	See Contrast table(2)

Mark No.	Description	Part No.
50	Button(OPEN)	See Contrast table(2)
51	Button(1-6)	XAC7070
52	Button(FUNCTION, AUDIO, EQ)	XAC7071
53	Spring	XBH7001
54	Cover	XNS7087
55	Sub Button Assy(UP, DOWN, LEFT, RIGHT)	XXA7310
56	Button(EJECT)	CAC7752
57	Screw(M2x4.5)	CBA1647
58	Screw(M2x4)	CBA1649
59	Washer	CBF1038
60	Spring	CBH2650
61	Spring	CBH2651
62	Spring	CBH2652
63	Spring	CBH2653
64	Holder	CND1254
65	Gear	CNV5997
66	Arm	CNV7400
67	Arm	CNV7401
68	Arm	CNV7402
69	Arm	CNV7403
70	Panel Unit	CWM9781
71	Socket(CN1950)	CKS3550
72	Connector(CN1951)	CKS4806
73	Holder Unit	CXB9501
74	Holder Unit	CXB9502
75	Damper Unit	CXB9503
76	Sub Panel Unit	XXA7361
77	Cover	CNM6854
78	Lighting Conductor	CNV6487
79	Spring	CBL1512
80	Pin	CNV6486
81	CD Mechanism Module(S10.1AACA)	CXK5668
82	Screw	ISS26P055FTC
83	Cord Assy	XDE7008
84	Insulator	XNM7100
85	Insulator	XNM7106
86	Panel	XNS7088
87	Sheet	See Contrast table(2)
88	Choke Coil(L981)	CTH1291
89	Transistor(Q751, 901)	2SD2396
90	IC(IC911)	NJM2388F84
91	IC(IC301)	PAL007A
92	Holder	CNV7619
93	Screw	BMZ40P140FTC
94	IC(IC2)	TSOP4840SB1

46	Knob(VOLUME)	XAA7021
47	Button(CLOCK)	See Contrast table(2)
48	Button(DISPLAY)	See Contrast table(2)
49	Button(LOUDNESS)	See Contrast table(2)

		DEH-	P4750MP/XM/GS				11
5	6				7	8

A

B

C

D

E

F

1

2

3

4

(2) CONTRAST TABLE

DEH-P4750MP/XM/GS, DEH-P4790MP/XM/ID and DEH-P4770MP/XM/CS are constructed the same except for the following:

A	Mark	No.	Description	DEH-P4750MP/XM/GS	DEH-P4790MP/XM/ID	DEH-P4770MP/XM/CS
		10	Tuner Amp Unit	CWM9777	CWM9777	CWM9895
		17	Pin Jack(CN351)	CKB1059	CKB1059	CKB1054
		27	Holder	CND1237	CND1237	CND1238
		33	Detach Grille Assy	CXC3891	CXC4374	CXC3893
		38	LCD(LCD1)	CAW1852	CAW1852	CAW1851
		45	Sub Grille Assy	CXC3948	CXC4332	CXC4330
		47	Button(CLOCK)	CAC9004	CAC9004	XAC7062
		48	Button(DISPLAY)	CAC9005	CAC9005	XAC7063
		49	Button(LOUDNESS)	CAC9006	CAC9006	CAC9086
B		50	Button(OPEN)	CAC9007	CAC9007	XAC7065
		87	Sheet	CNM9288	CNM9288	Not used

C

D

E

F

12		DEH-P4750MP/XM/GS
1	2		3	4

5

6

7

8

A

B

C

D

E

F

		DEH-	P4750MP/XM/GS				13
5	6				7	8

1	2	3	4
2.3 CD MECHANISM MODULE
42	5
A	13		81
	34
5		15	22
	5		E
13			F
		93

					13		92
					A
	44				B	82
		5	C	13	86	83	68
		54	D
1			52
B		53			86		28
		37					4
				4	71	23
				1
55
	5	36				87	38
					50
		4		73
		1
2			18 29		72
		64	51		10		75
	47
C				1
		2		I	76 B		59
24		1					49
		7

61	E

2	M	1		F
63			A	Q
	1			27
2				H
		G
21	L		J

M

57	1	N	O		D
		R		16
					12
79
	58
D			1		3	78
		1			33
			P
2
62		2			20
						80

1	40	1

	1GEM1024		1	39
	2GEM1045
				1	25
	3GEM1035		P		69
		56	19	30	70
E					14
	R			41
				31
91	C			65
			1		85
F	3	2			66

26

G

I H

28

45

J

23

K

77	90
		48
		8
67
		17
	60	46
		6
N		60
		11 89
L	43	10
	K
		74
		85
C		Q
		14

35

O

31

85

14		DEH-P4750MP/XM/GS
1	2		3	4

	5	6				7		8
CD MECHANISM MODULE SECTION PARTS LIST
Mark No.	Description	Part No.		Mark No.			Description	Part No.
1	CD Core Unit(S10.1)	CWX3096		50		Gear		CNV8379
2	Connector(CN101)	CKS4182
3	Connector(CN901)	CKS4017		51		Gear		CNV8380
4	Screw	BMZ20P035FTC		52		Gear		CNV8381
5	Screw	BSZ20P040FTC		53		Gear		CNV8382
				54		Gear		CNV8383
6	Screw(M2x4)	CBA1362		55		Gear		CNV8384
7	Screw(M2x3)	CBA1824
8	Screw(M2x3)	CBA1825		56		Rack		CNV8385
9	•••••			57		Arm		CNV8386
10	Washer	CBF1038		58		Arm		CNV8387
				59		Guide		CNV8388
11	Washer	CBF1060		60		Roller		CNV7218
12	Spring	CBH2390
13	Spring	CBH2606		61		Gear		CNV8389
14	Spring	CBH2607		62		Arm		CNV8391
15	Spring	CBH2608		63		Arm		CNV8390
				64		Arm		CNV8392
16	Spring	CBH2609		65		Damper		CNV7313
17	Spring	CBH2610
18	Spring	CBH2735		66		Damper		CNV7314
19	Spring	CBH2612		67		Arm		CNV8394
20	Spring	CBH2613		68		Arm		CNV8395
				69		Guide		CNV8396
21	Spring	CBH2614		70		Guide		CNV8397
22	Spring	CBH2615
23	Spring	CBH2616		71		Holder		CNV8398
24	Spring	CBH2617		72		Arm		CNV8402
25	Spring	CBH2620		73		Gear		CNV8400
				74		Damper		CNV7618
26	Spring	CBH2621		75		Motor Unit(M1)		CXC4440
27	Spring	CBH2641
28	Spring	CBH2642		76		Chassis Unit		CXC2318
29	Spring	CBH2643		77		Screw Unit		CXB8729
30	Spring	CBH2659		78		Gear Unit		CXC2397
				79		Arm Unit		CXC2316
31	Spring	CBH2688		80		Arm		CND1896
32	•••••
33	Shaft	CLA4441		81		Arm		CND1894
34	Frame	CNC9962		82		Motor Unit(M2)		CXB8933
35	Frame	CNC9963		83		Bracket		CNC9985
				84		•••••
36	Bracket	CND2712		85		Screw(M2x5)		EBA1028
37	Bracket	CND1895
38	Arm	CNC9968		86		Screw		JFZ20P020FTC
39	Arm	CND1909		87		Screw		JGZ17P022FTC
40	Lever	CND2032		88		•••••
				89		Washer		YE20FTC
41	Lever	CNC9984		90		Pickup Unit(P10)(Service)		CXX1641
42	Sheet	CNM8134
43	Collar	CNV7798		91		Screw		IMS26P030FTC
44	Guide	CNV7799		92		Spring		CBL1635
45	Arm	CNV8403		93		Clamper		CNV8372
46	Rack	CNV8374
47	Holder	CNV8376
48	Holder	CNV8377
49	Arm	CNV8378
			DEH-	P4750MP/XM/GS					15
	5	6					7	8

A

B

C

D

E

F

1

2

3

4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

A TUNER AMP UNIT

VDD

7

6

13

5

10

9

8

11

14

18

19

20

21

FM/AM TUNER UNIT

WC

CE2

VDD

SL

DI

CK

CE1

NC

DO

NC

NC

NC

NC

ROM

IC 3 EEPROM

IC 5

5.0V

5V

← 3.3V

OSC

LPF

B

ANTENNA

CN401

AM ANT

FMRF

1

1

ATT

2,3

Rch 24

IC 2

FM ANT

IC 1

2.5V

3.3V

3

ATT

Lch 23

5

IC 431

7

FMRF

MIXER, IF AMP

DET, FM MPX

NJM4558MD

RF adj

ANT adj

T51

CF52

CF51

RFGND

OSCGND

AUDIOGND

VDD 3.3

IC 4

TUN L

DGND

3.3V

3.3V ←

2.5V 2.5V

C

VCC

3

NC

2

12

15

22

16

4

17

6

TUN 3.3V

5

SYS +B

CDL

4

CN101

IP-BUS

11

BUSL-

7

BUSL+

Q101

8

B.UP

Q102

71

ASENBO

ASENBO

PICKUP UNIT

C CD CORE UNIT(S10.1)

5 BUS-

DIN1

1

86

TX

D

5

IC 101

2

85

(P10)(SERVICE)

1

6

HA12240FP

DOUT

RX

V3R3D

BUS+

STBY

8

24

IPPW

LASER

CN101

DIODE

LD- 15

15

Q101

142

LD

IC 201

SYSTEM CONT

MD

UPD63763GJ

143

CN901

CN721

5

5

PD

RF AMP, CD DECODER,

IC 601(2/2

31

LOUT

CD L

AC,BD

10

14

PE5465A

HOLOGRAM

MP3 AND WMA DECODER,

LOUT

UNIT

E,F

DIGITAL SERVO/DATA PROCESSOR

FOCUS ACT.

FOP

1

1

FOP

MONITOR

TRACKING ACT.

TOP

4

4

TOP

DIODE

LD+

14

14

FD,TD

SD,MD

X701

12

FOP

13

TOP

12

13

M1

CD

X1

X2

M

MICRO

DRIVER

SPINDLE

MOTOR

16

SOP

LOEJ

22

53

COMPUTER

14

RESET

15

9

RESET

RST2

A

15

SOM

LOEJ

reset

18

M2

M

LCOP

CONT

9

47

CONT

E

LOADING/CARRIAGE

17

LCOM

MOTOR

IC 301

IC 701

BRST,BRXEN,BSRQ

BRST,BRXEN,BSRQ,BDATA,BSCK

BA5835FP

PE5454A

BDATA,BSCK

Q751

VD

VD1

32

VD

3

21

Q753

B.UP

12EJ

4

20

3

4

31

8EJ

VDCONT 49

5

30

DSCSNS

97

HOME

CD3VON

46

2

VDCONT 19

5

VDCONT

S904

S905

S903

S901

Q761

12EJ

8EJ

DSCSNS HOME

VD2

VD2

2

22

3

IC 203

1

VD2

CD3VON

Q762

V3R3D

1

23

CD3VON

NJM2885DL1-33

3.3V REGULATOR

3V REGULATOR

F

3VDD

3

IC 703

2

VDD

5

19

VDD

S-812C33AUA-C2N

VDD

16

DEH-P4750MP/XM/GS

1

2

3

4

5

6

7

8

A

CN351

RESET

R Lch

8

REAR OUTPUT

RST2

1

IC 651

3

A

VDD

Q352

BD4834G

(DEH-P4770MP/XM/CS)

RESET

11

F Lch

4

FRONT OUTPUT

Q351

TUNPDO

98

TUNPDO

SP601

TUNPDI

94

TUNPDI

PEE

100

SL

74

SL

TUNPCK

97 TUNPCK

VDD 5V REG

CE1

99

TUNPCE1

Q901

CE2

32

TUNPCE2

VDD

B

Q902

SYSTEM CONTROLLER

IC 601(1/2)

10

PE5465A

DALMON

IC 431

7

BACKUP SENSE

B.UP

CN981

NJM4558MD

93

BSENS

FUSE

BSENS

16

BACK UP

16

Q931

10A

92

ASENS

ACC

ASENS

14

14

ACC

ACC SENSE

15

15

GND

B.UP

AMP

20

6

ELECTRONIC VOLUME/

VCC3/4

VCC1/2

TUN L

SOURCE SELECTOR

10

14

3

IN2L

F Lch

RLIN

IC 301

FL-

23

7

7

FL-

C

21

PAL007A

FL+

5

5

FL+

11

12

3

R Lch

FLIN

RL-

8

8

6

IC 231

RL-

IN4-L

RL+

5

6

6

RL+

PML003AM

5

IN4+L

22

25

MUTE

B.REMOTE

11

11

B. REM

STBY

CDL

4

IN3L

4

EVST

MUTE

MUTE

SYS+B

Q371

EVDT,

Q391

B.UP

TUN 3V REG.

SYS 8V REG.

B.UP

EVCK,

TU 3.3V

3

IC 921

1

2

IC 911

1

NJM2391DL1-33

NJM2388F84

B.UP

Q301

4

71

MUTE

37

SYSPW

ASENBO

21

SYSPW

86

TX

SYSPW

85

RX

D

24

IPPW

SYSTEM CONTROLLER

IC 601(2/2)

PE5465A

X1

16

X601

X2

15

12.58291MHz

D PANEL UNIT

B KEYBOARD UNIT

CN831

CN1950

CN1951

CN1

Q871

B.UP

ILB 10

10

ILB

5

8

BL+B

S2,S4,S9,S12,S14,S18

Q872

S1970

E

ILMPW

20

EJECTIN

8

EJSW

8

8

Q861

EJECT

B.UP

EJILP

5

5

Q862

FLPILM

9

Q851

KEY MATRIX

VDD

SWVDD

2

2

SWVDD

2

11

SWVDD

Q852

SWVDD

1

SWVDD

VOLUME

REM.CON.

56

ROT1 12

ROT1

ROT1

S19

3

IC2

2

ROT1

12

7

6

TSOP4840SB1

ROT0

57

ROT0 13

13

ROT0

9

4

ROT0

17

CSENS

77

CSENS

6

6

CSENS

11

2

REM

KEY DATA

XO

22

X1

DPDT

96

DPDT 11

11

DPDT

10

3

DPDT

18

DPDT

XI

23

4.97MHz

LCD DRIVER/

F

95

KYDT

KYDT 14

14

KYDT

8

5

KYDT

20

KYDT

KEY CONTROLLER

S831

10

VLCD

IC 1

LCD1

90

PD6340A

DSENS

55

VDD

DSENS

5

6

DEH-P4750MP/XM/GS

7

8

17

1

2

3

4

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
							Large size
							SCH diagram
		A-a			A-b

A-a	A-b	Guide page
A-a	A-b	Detailed page
		C

CN901

B	: 0.2dB
	CD-DA, MP3

C

	8 9 10 11	5 6 7 1 2 3 4

IP-BUS : 2.2dB

D

FM/AM TUNER UNIT
-30dB	-30dB
FM(30%) :	AM(30%) :

E

FM(30%) : -31dB

AM(30%) : -31dB

IP-BUS : 2.2dB

CD-DA, MP3 : 0.2dB

dalmon

mute

NC

NC

NC

NC

NC

NC

NC

TSCK/BSCK

TSI/BSI

ASENSBO

NOTE :

EJECT

Symbol indicates a resistor.

No differentiation is made between chip resistors and B CN1 discrete resistors.

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and discrete capacitors.

	Decimal points for resistor
F	and capacitor fixed values
	are expressed as :
	2.2	←	2R2
	0.022		←R022

DSENS

D PANEL UNIT

A D

18		DEH-P4750MP/XM/GS
1	2		3	4

dalmon

TSCK/BSCK

TSI/BSI

ASENSBO

5

6

7

8

A

A-b

A TUNER AMP UNIT

FM(30%) : -5.9dB

AM(30%) : -5.9dB

IP-BUS : 10.3dB

CD-DA, MP3 : 10.3dB

BEEP

NC

NC

FRONT

R CH

FRONT

L CH

REAR

R CH

REAR

L CH

>

FM(30%) : -6.66dB

AM(30%) : -6.66dB

IP-BUS : 9.54dB CD-DA, MP3 : 9.54dB

POWER AMP

600 H

	BACKUP
>	GND
	ACC
	B.REM

RL—

FL—

RL+

FL+

RR—

FR—

RR+

FR+

FM(30%) : 20.1dB

AM(30%) : 20.1dB

IP-BUS : 36.3dB

CD-DA, MP3 : 36.3dB

B

C

D

E

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.

F

A

		DEH-	P4750MP/XM/GS				19
5	6				7	8

1

A

A-b

B

C

A-a A-b

D

E

F

A-a

20

1

2	3

1

CD-DA, MP3 : 0.2dB

IP-BUS : 2.2dB

AM(30%) : -31dB

FM(30%) : -31dB

		CN901
C			CD-DA,MP3:2dB.0

		1234
	7			56
		11		910		8

DEH-P4750MP/XM/GS

2

3

4

dalmon

mute

2dB.2		IP-BUS:

4

5

dalmon	ASENSBO
	TSI/BSI
	TSCK/BSCK
	NC
	NC
	NC

mute

NC

NC

NC

NC

FM/AMTUNERUNIT

5

6

7

8

A

2

3 4

A-b

B

DSENS

AM(30%):-30dB

FM(30%):-30dB

EJECT

D PANEL UNIT

C

CN1

A-b

B

A-a

D

resistors and

capacitors and

chip

chip

pointsDecimalfor resistor fixedcapacitorand values expressedareas :

←2.22R2

←0.022R022

: indicatesSymbola resistor. differentiationNois made between resistors.discrete

indicatesSymbola capacitor. differentiationNois made between capacitors.discrete

E

NOTE

F

A-a D

	DEH-	P4750MP/XM/GS				21
6				7	8

22
	A
	b-

1

F

E

D

C

B

A

A-a A-b

A TUNER AMP UNIT

1

2

P4750MP/XM/GS-DEH

3

1

4

dalmon

FM(30%) : -5.9dB

AM(30%) : -5.9dB

IP-BUS : 10.3dB

CD-DA, MP3 : 10.3dB

BEEP

FRONT
R CH
FRONT
L CH
REAR	2
R CH
REAR
L CH

>

FM(30%) : -6.66dB

AM(30%) : -6.66dB

IP-BUS : 9.54dB

CD-DA, MP3 : 9.54dB

3

POWER AMP

4

dalmon

5

ASENSBO

6

P4750MP/XM/GS-DEH	2
7
	3
	4

8
23	b-A

BEEP

NC

NC

600 H

BACKUP

> GND

ACC

B.REM

RL—

FL—

RL+

FL+

RR—

FR—

RR+

FR+

FM(30%) : 20.1dB

AM(30%) : 20.1dB

IP-BUS : 36.3dB

CD-DA, MP3 : 36.3dB

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.

A-a A-b

F

E

D

C

B

A

5

6

7

8

1

2

3

4

3.3 KEYBOARD UNIT

A

B

C

D

GS,ID:CAW1852

CS:CAW1851

E

F

B

24

1

LCD DRIVER/

KEY CONTROLLER

DEH-P4750MP/XM/GS

2

3

4

5

6

7

8

B KEYBOARD UNIT

DISPLAY	CN1951

D

FUNCTION

CLOCK

LOUDNESS

CS:NSCW505C-4234

GS,ID:NSCW505C-4237

VOLUME

A

B

C

D

E

: The power supply is shown with the marked box.

F

B

		DEH-	P4750MP/XM/GS				25
5	6				7	8