Pioneer P250, P2500, P25 Service Manual

Service

Manual

ORDER NO.

DEH-P250/XM/UC	CRT2981

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

DEH-P250XM/UC, XN/UC DEH-P2500 XM/UC, XN/UC DEH-P25 XM/UC, XN/UC

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

Model No.	Order No.					Mech. Module	Remarks
CX-3026	CRT2944					S10	CD Mech. Module:Circuit Description, Mech.Description, Disassembly

For details, refer to "Important symbols for good services".

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

C PIONEER CORPORATION 2002	K-ZZA. OCT. 2002 Printed in Japan

1

2

3

4

A 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.

BWARNING

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

C

[ Important symbols for good services ]

DIn this manual, the symbols shown-below indicate that adjustments, settings or cleaning should be made securely. When you find the procedures bearing any of the symbols, be sure to fulfill them:

1.Product safety

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. Adjustments

To keep the original performances of the product, optimum adjustments or specification confirmation is indispensable. In accordance with the procedures or instructions described in this manual, adjustments should be performed.

3. Cleaning

E

For optical pickups, tape-deck heads, lenses and mirrors used in projection monitors, and other parts requiring cleaning, proper cleaning should be performed to restore their performances.

4. Shipping mode and shipping screws

To protect the product from damages or failures that may be caused during transit, the shipping mode should be set or the shipping screws should be installed before shipping out in accordance with this manual, if necessary.

	5. Lubricants, glues, and replacement parts
	Appropriately applying grease or glue can maintain the product performances. But improper lubrication or applying
	glue may lead to failures or troubles in the product. By following the instructions in this manual, be sure to apply the
F	prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
	ones should be used.
2	DEH-P250/XM/UC

1

2

3

4

5		6		7		8

CONTENTS
SAFETY INFORMATION ............................................................................................................................................	2
1. SPECIFICATIONS .......................................................................................................................................................	4
2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................	6
2.1 PACKING...............................................................................................................................................................	6
2.2 EXTERIOR.............................................................................................................................................................	8
2.3 CD MECHANISM MODULE ...............................................................................................................................	12
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM...................................................................................................	14
3.1 BLOCK DIAGRAM ..............................................................................................................................................	14
3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................	16
3.3 KEYBOARD UNIT ...............................................................................................................................................	22
3.4 CD MECHANISM MODULE ...............................................................................................................................	24
4. PCB CONNECTION DIAGRAM ................................................................................................................................	28
4.1 TUNER AMP UNIT .............................................................................................................................................	28
4.2 PANEL UNIT .......................................................................................................................................................	32
4.3 KEYBOARD UNIT ...............................................................................................................................................	33
4.4 CD MECHANISM MODULE ...............................................................................................................................	34
5. ELECTRICAL PARTS LIST ........................................................................................................................................	36
6. ADJUSTMENT .........................................................................................................................................................	40
6.1 CD ADJUSTMENT .............................................................................................................................................	40
6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................	42
6.3 ERROR MODE ....................................................................................................................................................	44
7. GENERAL INFORMATION .......................................................................................................................................	45
7.1 DIAGNOSIS ........................................................................................................................................................	45
7.1.1 DISASSEMBLY ..............................................................................................................................................	45
7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................	47
7.2 PARTS .................................................................................................................................................................	48
7.2.1 IC ....................................................................................................................................................................	48
7.2.2 DISPLAY.........................................................................................................................................................	56
7.3 OPERATIONAL FLOW CHART...........................................................................................................................	58
7.4 CLEANING ..........................................................................................................................................................	59
8. OPERATIONS ...........................................................................................................................................................	60

- CD Player Service Precautions

1.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.

2.To protect the pickup unit from electrostatic discharge during serviving, take an appropriate treat- ment(shorting-solder) by referring to "the DISASSEMBLY" on page 45.

3.After replacing the pickup unit, be sure to check the grating.(See p.42.)

A

B

C

D

E

F

DEH-P250/XM/UC	3

5

6

7

8

1

2

3

4

A1. SPECIFICATIONS

-DEH-P250/XM/UC, DEH-P250/XN/UC

B

C

D

E

F

4	DEH-P250/XM/UC

1

2

3

4

5		6		7		8

- DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC, DEH-P25/XN/UC

A

B

C

D

E

F

DEH-P250/XM/UC	5

5

6

7

8

1

2

3

4

A2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

B

C

NOTE:

D

-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.

-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.)

(1)PACKING SECTION PARTS LIST

Mark No. Description

Part No.

Mark No. Description

Part No.

1

Cord Assy

CDE7060

*

16

Battery

CEX1065

E

2

Accessory Assy

CEA3376

17

Carton

See Contrast table(2)

3

Spring

CBH1650

18

Contain Box

See Contrast table(2)

4

Screw Assy

CEA3445

19

Protector

CHP2663

5

Fixing Screw

BPZ20P060FZK

20

Protector

CHP2664

6

Screw

CBA1002

21-1

Owner’s Manual

See Contrast table(2)

*

7

Polyethylene Bag

CEG-127

21-2

Installation Manual

See Contrast table(2)

8

Screw

CRZ50P090FTC

*

21-3

Warranty Card

See Contrast table(2)

9

Screw

TRZ50P080FTC

*

21-4

Card

See Contrast table(2)

*

10

Polyethylene Bag

CEG-158

*

21-5

Caution Card

See Contrast table(2)

11

Handle

CNC5395

22

Case Assy

See Contrast table(2)

F

12

Holder

CND1249

23

Remote Control Unit

CXC1265

13

Holder

CND1250

14

Bush

CNV3930

15

Polyethylene Bag

CEG1173

6

DEH-P250/XM/UC

1

2

3

4

5		6		7		8

(2) CONTRAST TABLE

DEH-P250/XM/UC, DEH-P250/XN/UC, DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC and DEH-P25/XN/UC are constructed the same except for the following:

Mark No. Symbol and Description			Part No.
		DEH-P250/XM/UC		DEH-P2500/XM/UC	DEH-P25/XM/UC
17 Carton		CHG4958		CHG4959	CHG4960
18 Contain Box		CHL4958		CHL4959	CHL4960
21-1 Owner’s Manual		CRD3686		CRD3688	CRD3688
21-2	Installation Manual	CRD3687		CRD3689	CRD3689
* 21-3	Warranty Card	CRY1070		Not used	Not used
* 21-4 Card		Not used		ARY1048	ARY1048
* 21-5	Caution Card	Not used		Not used	CRP1294
22 Case Assy		CXB3520		Not used	Not used
Mark No. Symbol and Description			Part No.
		DEH-P250/XN/UC		DEH-P2500/XN/UC	DEH-P25/XN/UC
17	Carton	CHG4972		CHG4973	CHG4974
18	Contain Box	CHL4972		CHL4973	CHL4974
21-1	Owner’s Manual	CRD3686		CRD3688	CRD3688
21-2	Installation Manual	CRD3687		CRD3689	CRD3689
* 21-3	Warranty Card	CRY1070		Not used	Not used
* 21-4	Card	Not used		ARY1048	ARY1048
* 21-5	Caution Card	Not used		Not used	CRP1294
22	Case Assy	CXB3520		Not used	Not used

- Owner's Manual, Installation Manual

Model	Part No.	Language
DEH-P250/XM/UC	CRD3686	English, French, Spanish
DEH-P250/XN/UC	CRD3687
DEH-P2500/XM/UC	CRD3688	English, French, Spanish
DEH-P2500/XN/UC
DEH-P25/XM/UC	CRD3689
DEH-P25/XN/UC

A

B

C

D

E

F

DEH-P250/XM/UC	7

5

6

7

8

1

2

3

4

2.2 EXTERIOR

A

B

C

D

E

F

8	DEH-P250/XM/UC

1

2

3

4

5		6		7		8

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description		Part No.		Mark No.		Description		Part No.
1	Remote Control Unit	CXC1265		46		Cover		CNM6854
2	Cover	CNS7068		47		Panel		CNS7245
3	Screw	ISS26P055FTC		48		Gear		CNV5997
4	Screw	BMZ30P040FZK		49		Pin		CNV6486
5	Screw	BSZ26P060FTC		50		Lighting Conductor		CNV6487
6	Screw	BSZ30P060FTC		51		Arm		CNV7400
7	Screw	BSZ30P200FTC		52		Arm		CNV7401
8	Cord Assy	CDE7060		53		Arm		CNV7402
9	Cable	CDE7188		54		Arm		CNV7403
10	CD Mechanism Module(S10) CXK5600			55		Panel Unit		CWM8758
11	Case	CNB2793		56		Socket(CN1950)		CKS3550
12	Earth Plate	CNC8915		57		Connector(CN1951)		CKS4462
13	Cushion	CNM4870		58		Holder Unit		CXB9501
14	Insulator	CNM7935		59		Holder Unit		CXB9502
15	Insulator	CNM8174		60		Damper Unit		CXB9503
16	Panel	See Contrast table(2)		61		Service Panel Unit		CXX1691
17	Tuner Amp Unit	CWM8618		62		Screw		IMS20P045FZK
18	Screw	ASZ26P060FTC		63		Detach Grille Assy		See Contrast table(2)
19	Screw	BPZ26P080FTC		64		Screw		BPZ20P100FZK
20	Screw	BSZ26P160FTC		65		Button(DISP)		CAC7779
21	Fuse(10A)	CEK1208		66		Button(PAUSE)		CAC7780
22	FM/AM Tuner Unit	CWE1646		67		Button(AUDIO)		CAC7781
23	Holder	CND1054		68		Button(OPEN)		CAC7782
24	Pin Jack(CN351)	CKB1059		69		Button(VOLUME)		CAC7783
25	Plug(CN981)	CKM1376		70		Button(SELECT)		CAC7784
26	Connector(CN101)	CKS3408		71		Button(SRC)		CAC7785
27	Plug(CN831)	CKS3537		72		Button(FUNC)		CAC7786
28	Connector(CN721)	CKS3835		73		Button(1-6)		CAC7787
29	Antenna Jack(CN401)	CKX1056		74		Button(CLK, EQ)		CAC7808
30	Holder	CND1237		75		Spring		CBH2630
31	Holder	CND1352		76		Cover		CNS7269
32	Insulator	CNM8245		77		Lighting Conductor		CNV7421
33	Heat Sink	CNR1668		78		Rubber		CNV7422
34	Terminal(CN402)	VNF1084		79		Keyboard Unit		See Contrast table(2)
35	Holder Unit	See Contrast table(2)		80		LCD(LCD1901)		See Contrast table(2)
36	Chassis Unit	CXB9528		81		Connector(CN1901)		CKS4524
37	Button(EJECT)	CAC7752		82		Holder		CNC9757
38	Screw(M2x2)	CBA1176		83		Sheet		CNM7647
39	Washer	CBF1038		84		Cushion		CNM8092
40	Spring	CBH2650		85		Connector		CNV6440
41	Spring	CBH2651		86		Lighting Conductor		CNV7495
42	Spring	CBH2652		87		Grille Unit		See Contrast table(2)
43	Spring	CBH2653		88		Transistor(Q752, 901, 911)		2SD2375
44	Spring	CBL1512		89		IC(IC301)		PAL007A
45	Holder	CND1254		90		IC(IC1902)		TSOP4840SB1
				91		Holder		See Contrast table(2)
				92		Screw		See Contrast table(2)
				93		Choke Coil(L981)		CTH1280
								9
			DEH-P250/XM/UC

5

6

7

8

A

B

C

D

E

F

1

2

3

4

(2) CONTRAST TABLE

A

DEH-P250/XM/UC, DEH-P250/XN/UC, DEH-P2500/XM/UC, DEH-P2500/XN/UC, DEH-P25/XM/UC and DEH-P25/XN/UC are constructed the same except for the following:

		Mark No. Symbol and Description			Part No.
				DEH-P250/XM/UC		DEH-P2500/XM/UC	DEH-P25/XM/UC
		16 Panel		CNS6935		CNS7309	CNS7309
		35 Holder Unit		CXB6681		CXB6681	CXB6681
		63	Detach Grille Assy	CXB9601		CXB9602	CXB9603
		79 Keyboard Unit		CWM8635		CWM8635	CWM8636
B		80 LCD(LCD1901)		CAW1759		CAW1759	CAW1760
		87	Grille Unit	CXB9629		CXB9630	CXB9631
		91 Holder		Not used		Not used	CNV7619
		92 Screw		Not used		Not used	BMZ40P140FTC
		Mark No. Symbol and Description			Part No.
				DEH-P250/XN/UC		DEH-P2500/XN/UC	DEH-P25/XN/UC
		16	Panel	CNS6935		CNS7309	CNS7309
		35	Holder	CNC8659		CNC8659	CNC8659
C		63	Detach Grille Assy	CXB9601		CXB9602	CXB9603
		79	Keyboard Unit	CWM8635		CWM8635	CWM8636
		80	LCD(LCD1901)	CAW1759		CAW1759	CAW1760
		87	Grille Unit	CXB9629		CXB9630	CXB9631
		91	Holder	Not used		Not used	CNV7619
		92	Screw	Not used		Not used	BMZ40P140FTC

D

E

F

10	DEH-P250/XM/UC

1

2

3

4

5		6		7		8

A

B

C

D

E

F

DEH-P250/XM/UC	11

5

6

7

8

1

2

3

4

2.3 CD MECHANISM MODULE

A

B	1

1

1

2 1

C

2

1

2

1

	2	1
		1
D		1
		3

1

2		2
	1	1
		1
		1

1GEM1024

2GEM1045

3GEM1035

E

F

12	DEH-P250/XM/UC

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)	CWX2708		46	Rack	CNV7199
2	Connector(CN101)	CKS4182	47		Holder	CNV7201
3	Connector(CN701)	CKS4188	48		Holder	CNV7202
4	Screw	BMZ20P035FTC	49		Arm	CNV7203
5	Screw	BSZ20P040FTC	50		Gear	CNV7207
6	Screw(M2x4)	CBA1362	51		Gear	CNV7208
7	Screw(M2x3)	CBA1511	52		Gear	CNV7209
8	Screw(M2x3)	CBA1527	53		Gear	CNV7210
9	Washer	CBF1037	54		Gear	CNV7211
10	Washer	CBF1038	55		Gear	CNV7212
11	Washer	CBF1060	56		Rack	CNV7214
12	Spring	CBH2390	57		Arm	CNV7215
13	Spring	CBH2606	58		Arm	CNV7216
14	Spring	CBH2607	59		Guide	CNV7217
15	Spring	CBH2608	60		Roller	CNV7218
16	Spring	CBH2609	61		Gear	CNV7219
17	Spring	CBH2610	62		Arm	CNV7221
18	Spring	CBH2611	63		Arm	CNV7220
19	Spring	CBH2612	64		Arm	CNV7222
20	Spring	CBH2613	65		Damper	CNV7313
21	Spring	CBH2614	66		Damper	CNV7314
22	Spring	CBH2615	67		Arm	CNV7341
23	Spring	CBH2616	68		Arm	CNV7342
24	Spring	CBH2617	69		Guide	CNV7360
25	Spring	CBH2620	70		Guide	CNV7361
26	Spring	CBH2621	71		Holder	CNV7437
27	Spring	CBH2641	72		Arm	CNV7444
28	Spring	CBH2642	73		Gear	CNV7595
29	Spring	CBH2643	74		Damper	CNV7618
30	Spring	CBH2659	75		Motor Unit(M1)	CXB6007
31	Spring	CBH2688	76		Chassis Unit	CXB8728
* 32	Spring	CBL1614	77		Screw Unit	CXB8729
33	Shaft	CLA3845	78		Gear Unit	CXB8731
34	Frame	CNC9962	79		Arm Unit	CXB8732
35	Frame	CNC9963	80		Arm Unit	CXB8735
36	Bracket	CNC9966	81		Arm Unit	CXB8852
37	Bracket	CNC9967	82		Motor Unit(M2)	CXB8933
38	Arm	CNC9968	83		Bracket	CNC9985
39	Arm	CNC9973	84		Screw	JFZ20P020FTC
40	Lever	CNC9983	85		Screw(M2x5)	EBA1028
41	Lever	CNC9984	86		Screw	JFZ20P020FTC
42	Sheet	CNM8134	87		Screw	JGZ17P022FTC
43	Collar	CNV6906	88		Washer	YE15FTC
44	Guide	CNV6925	89		Washer	YE20FTC
45	Arm	CNV7198	90		Pickup Unit(Service)(P10)	CXX1641
			91		Screw	IMS26P030FMC

A

B

C

D

E

F

DEH-P250/XM/UC

13

5

6

7

8

1

2

3

4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

A TUNER AMP UNIT

VDD

FM/AM TUNER UNIT

7

6

13

5

10

9

8

11

14

18

19

20

21

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

ATT

2

Rch 24

IC 2

FM ANT

IC 1

2.5V

3

ATT

3.3V

Lch 23

FMRF

MIXER, IF AMP

DET, FM MPX

ANT adj

RF adj

T51

CF52

CF51

RFGND

OSCGND

DGND

AUDIOGND

VDD 3.3

IC 4

C

NC

VCC

3.3V

3.3V

← 2.5V

2.5V

2

12

15

22

16

4

17

TUN 3.3V

TUN L

3

SYS 8.4V

BUS+L

BUS+L

5

BUS-L

BUS-L

6

CN101

CD L

4

7

11

5

BUZZER

1

8

IP-BUS DRIVER

100

PICKUP UNIT

BUS-

1 TX

86

PEE

D CD CORE UNIT(S10)

5

IC 101

TX

37

(SERVICE)(P10)

6 HA12187FP 2 RX

85

RX

mute

BUS+

8

24

CN101

CN701

IPPW

IPPW

D

LASER

CN721

Q101

LOUT

DIODE

LD+

14

1

LD

LOUT

20

8

14

MD

5

2

PD

xtal

23

Q101

SYSPW

21

X201

HOLOGRAM

AC, F, E, BD

BU

16

SERVO XTAL

24

X1

UNIT

X601

SYSTEM CONTROLLER

FOP

FOP

CONTROL,

15

71

FOCUS ACT.

1

DSP,

ASENBO

X2

TOP

TOP

MONITOR TRACKING ACT.

4

LPF, DAC

IC 601(2/2)

IC 722

Q601

DIODE

Q102

PE5341C

12

AVREF

83

IC 201

SO

XSI

2

4

66

FD, TD, SD, MD

16

6

XSI

12

FOP

UPD63712GC

59

CDLOEJ

22

13

TOP

42

LIMIT

TC7SET08FU

61

adpw

CONT

ACT,MOTOR

79

SPINDLE

M

DSCSNS

9

DRIVER

FLPILM

MOTOR

16

HOME

CLMP 63

SOP

XTALEN

8

80

ejectin

15

SOM

VDSENS

LOADING/ CARRIAGE

M

17

LCOM

LOEJ

MOTOR

18

LCOP

LOEJ

22

5

17

VDCONT

KYDT

dsens

DPDT

swvdd

ILMPW

CONT

9

CONT

7

15

BU

E

IC 301

64

95

90

96

41

20

BA5996FP

DSCSNS

6

16

CLMP

11

11

VDD

VDSENS

VD

Q752

CLAMP

1

20

VD

BU

12EJ

8EJ

DSCSNS

3.3V REGULATOR

2

21

3R3V

3

IC 701

1

Q751

NJM2391DL1-33

DETACH SENSE

F

14

DEH-P250/XM/UC

1

2

3

4

5		6		7		8

A

RESET

1

IC 651

2

VDD

BD4834G

CN351

PRE OUT

11

RL

RL

4

RL

reset

Q351

CE2

32

TUNPCE2

CE1

99

TUNPCE1

DO

94

TUNPDI

DI

98

TUNPDO

CK

97 TUNPCK

VDD REGULATOR

Q901

74

SL

VDD

B

Q902

SYSTEM CONTROLLER

IC 601(1/2)

DALMON

10

PE5341C

CN981

BACKUP SENSE

BU

bsens

93

Q931

BU

16

FUSE

16

BACK UP

10A

asens

92

ACC

14

14

ACC

ACC SENSE

15

15

GND

C

ELECTRONIC VOLUME/

POWER AMP

BU

TUN L

3

SOURCE SELECTOR

20

IN2-L

23

FL-

+L

5

FL-

7

7

IN4+L

21

L

6

IC 131

10

14

IC 301

FL+

5

5

FL+

IN4-L

FLIN

3

PML003AM

FL

12

PAL007A

RL-

8

8

RL-

4

RL 11

RLIN

RL+

5

6

6

IN3-L

MUTE

STBY

RL+

B.REMOTE

22

4

25

11

11

B.REM

MUTE

Q502

BU

SYS 8.4V REGULATOR

Q911

Q912

MUTE

SYS 8.4V

BU

Q301

Q501

Q913

D

SYSPW

TUNER 3.3V REGULATOR

IC 921

X601

TUN 3.3V

3

1

SYS 8.4V

Q601

BA033FP

VDD

CN831

BU

5

5

Q831

6

6

B PANEL UNIT

C KEYBOARD UNIT

8

8

S1970

9

9

EJECT

CN1901

Q961

ILB

BU

7

7

4

9

ILB

BL+B

10

10

5

8

E

Q962

Q971

SWVDD

VDD

SWDVDD

2

2

2

11

REMOTE CONTROL SENSOR

DPDT

DPDT

OPT IN

IC 1902

3

11

11

10

3

1

TSOP4840SB1

S801

17

55

11

RFM

VDD

VLCD

KEY DATA

KEY MATRIX

DETACH SENSE

18

DPDT

LCD DRIVER/

KYDT

KYDT

14

14

8

5

KEY CONTROLLER

20

KTDT

IC 1901

LCD

PD6340A

CN1951

CN1950

F

DEH-P250/XM/UC

15

5

6

7

8

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

A	PARTS LIST”.		A-a
		Large size
A-a	A-b	SCH diagram
A-a	A-b	Guide page
A-a	A-b	Detailed page	FM:-31.0dBs
		R4721	AM:-31.0dBs
		0R0	IP-BUS:+2.2dBs
B			CD:0dBs
			CD:0dBs
			D CN701
		IP-BUS:+2.2dBs
C		IP-BUS
			R9101
			0R0
			PE5
		FM(30%):-30.0dBs
		AM(30%):-30.0dBs
D
		FM/AM	R9403
		UNIT TUNER	0R0
E			SW SENSE DETACH
			EJECT
			C
			CN1901
F			B UNITPANEL
16	A B		DEH-P250/XM/UC

1

2

3

4

5		6		7		8

A-b

A

A TUNER AMP UNIT

FM:-5.9dBs

AM:-5.9dBs

IP-BUS:+10.3dBs

CD:+10.1dBs

5341C

FM:-6.66dBs

AM:-6.66dBs

IP-BUS:+9.54dBs

CD:+9.34dBs

REAR

R CH

REAR

L CH

600 H

BACKUP

GND

ACC

B.REM

RL—

FL—

RL+

FL+

RR—

FR—

RR+

FR+

FM:+30dBs

AM:+20dBs

IP-BUS:+36dBs

CD:+36dBs

NOTE :
						Symbol indicates a resistor.	Decimal points for resistor
						No differentiation is made between chip resistors and
							and capacitor fixed values
						discrete resistors.
							are expressed as :
						Symbol indicates a capacitor.	2.2 ←	2R2
						No differentiation is made between chip capacitors and	0.022	←R022
						discrete capacitors.

			A	17
	DEH-P250/XM/UC

B

C

D

E

F

5

6

7

8

1

2

3

4

A-b

1

2

A

FM:-31.0dBs	AM:-31.0dBs BUS:+2.2dBs	CD:0dBs
B	IP-

C

A-a A-b

D	CN701
	D

		CD:0dBs
E
R4721	0R0	-BUS:+2.2dBs
		IP

F

A-a

IP-BUS

		R9101	0R0

18	DEH-P250/XM/UC

1

2

3

4

	5	6	7		8
			3	4	A-b
PE5341C						A
			DETACH SENSE SW
						B
			EJECT	PANEL UNIT
				B		C
			C	CN1901
						A-b
						A-a
						D
	R9403	0R0				E
FM(30%):-30.0dBs	AM(30%):-30.0dBs
	FM/AM TUNER UNIT
						F
					A-a	B
			DEH-P250/XM/UC			19
	5	6	7		8

1

2

3

4

A	FM:-6.66dBs	AM:-6.66dBs BUS:+9.54dBs-IP CD:+9.34dBs	REAR CHR	REAR CHL

UNITAMP

TUNER

B

A

C

A-a A-b

D
E			5.9dBs-FM: 5.9dBs-AM:	BUS:+10.3dBs	CD:+10.1dBs
				IP-
F	A-b	1			2
	20		DEH-P250/XM/UC

1

2

3

4

1C

5

6

3

P250/XM/UC-DEH

7

	4
8	A
21	b-

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.

A-a A-b

600 H

BACKUP

GND

ACC

B.REM

RL—

FL—

RL+

FL+

RR—

FR—

RR+

FR+

FM:+30dBs

AM:+20dBs

IP-BUS:+36dBs

CD:+36dBs

Decimal points for resistor and capacitor fixed values are expressed as :

2.2	←	2R2
0.022		←	R022

5

6

7

8

F

E

D

C

B

A