Pioneer P250, P2500, P25 Service Manual

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

ORDER NO.

CRT2981

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

DEH-P250XM/UC, XN/UC

DEH-P250/XM/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

DEH-P2500

XM/UC, XN/UC

DEH-P25

XM/UC, XN/UC

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

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DEH-P250/XM/UC

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.

W

ARNING

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

[ Important symbols for good services ]

In 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

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
prescribed grease or glue to proper portions by the appropriate amount.For replacement parts or tools, the prescribed
ones should be used.

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DEH-P250/XM/UC

- CD Player Service Precautions

1. Before disassembling the unit, be sure to turn off the

power. Unplugging and plugging the connectors dur-

ing power-on mode may damage the ICs inside the

unit.

2. To protect the pickup unit from electrostatic dis-

charge during serviving, take an appropriate treat-

ment(shorting-solder) by referring to "the DISAS-

SEMBLY" on page 45.

3. After replacing the pickup unit, be sure to check the

grating.(See p.42.)

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

1. SPECIFICATIONS

4

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DEH-P250/XM/UC

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

5

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

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

6

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DEH-P250/XM/UC

1 Cord Assy CDE7060
2 Accessory Assy CEA3376
3 Spring CBH1650
4 Screw Assy CEA3445
5 Fixing Screw BPZ20P060FZK

6 Screw CBA1002

* 7 Polyethylene Bag CEG-127

8 Screw CRZ50P090FTC
9 Screw TRZ50P080FTC

* 10 Polyethylene Bag CEG-158

11 Handle CNC5395
12 Holder CND1249
13 Holder CND1250
14 Bush CNV3930
15 Polyethylene Bag CEG1173

* 16 Battery CEX1065

17 Carton

See Contrast table(2)

18 Contain Box

See Contrast table(2)
19 Protector CHP2663
20 Protector CHP2664

21-1 Owner’s Manual

See Contrast table(2)

21-2 Installation Manual

See Contrast table(2)

* 21-3 Warranty Card

See Contrast table(2)

* 21-4 Card

See Contrast table(2)

* 21-5 Caution Card

See Contrast table(2)

22 Case Assy

See Contrast table(2)
23 Remote Control Unit CXC1265

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

(1) PACKING SECTION PARTS LIST

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.

- 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. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

7

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8

DEH-P250/XM/UC

- 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

Part No.

Mark No. Symbol and Description 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

(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:

Part No.

Mark No. Symbol and Description 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

8

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DEH-P250/XM/UC

2.2 EXTERIOR

9

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

1 Remote Control Unit CXC1265
2 Cover CNS7068
3 Screw ISS26P055FTC
4 Screw BMZ30P040FZK
5 Screw BSZ26P060FTC

6 Screw BSZ30P060FTC
7 Screw BSZ30P200FTC
8 Cord Assy CDE7060
9 Cable CDE7188

10

CD Mechanism Module(S10)

CXK5600

11 Case CNB2793
12 Earth Plate CNC8915
13 Cushion CNM4870
14 Insulator CNM7935
15 Insulator CNM8174

16 Panel

See Contrast table(2)
17 Tuner Amp Unit CWM8618
18 Screw ASZ26P060FTC
19 Screw BPZ26P080FTC
20 Screw BSZ26P160FTC

21 Fuse(10A) CEK1208
22 FM/AM Tuner Unit CWE1646
23 Holder CND1054
24 Pin Jack(CN351) CKB1059
25 Plug(CN981) CKM1376

26 Connector(CN101) CKS3408
27 Plug(CN831) CKS3537
28 Connector(CN721) CKS3835
29 Antenna Jack(CN401) CKX1056
30 Holder CND1237

31 Holder CND1352
32 Insulator CNM8245
33 Heat Sink CNR1668
34 Terminal(CN402) VNF1084
35 Holder Unit

See Contrast table(2)

36 Chassis Unit CXB9528
37 Button(EJECT) CAC7752
38 Screw(M2x2) CBA1176
39 Washer CBF1038
40 Spring CBH2650

41 Spring CBH2651
42 Spring CBH2652
43 Spring CBH2653
44 Spring CBL1512
45 Holder CND1254

46 Cover CNM6854
47 Panel CNS7245
48 Gear CNV5997
49 Pin CNV6486
50 Lighting Conductor CNV6487

51 Arm CNV7400
52 Arm CNV7401
53 Arm CNV7402
54 Arm CNV7403
55 Panel Unit CWM8758

56 Socket(CN1950) CKS3550
57 Connector(CN1951) CKS4462
58 Holder Unit CXB9501
59 Holder Unit CXB9502
60 Damper Unit CXB9503

61 Service Panel Unit CXX1691
62 Screw IMS20P045FZK
63 Detach Grille Assy

See Contrast table(2)
64 Screw BPZ20P100FZK
65 Button(DISP) CAC7779

66 Button(PAUSE) CAC7780
67 Button(AUDIO) CAC7781
68 Button(OPEN) CAC7782
69 Button(VOLUME) CAC7783
70 Button(SELECT) CAC7784

71 Button(SRC) CAC7785
72 Button(FUNC) CAC7786
73 Button(1-6) CAC7787
74 Button(CLK, EQ) CAC7808
75 Spring CBH2630

76 Cover CNS7269
77 Lighting Conductor CNV7421
78 Rubber CNV7422
79 Keyboard Unit

See Contrast table(2)
80 LCD(LCD1901)

See Contrast table(2)

81 Connector(CN1901) CKS4524
82 Holder CNC9757
83 Sheet CNM7647
84 Cushion CNM8092
85 Connector CNV6440

86 Lighting Conductor CNV7495
87 Grille Unit

See Contrast table(2)
88 Transistor(Q752, 901, 911) 2SD2375
89 IC(IC301) PAL007A
90 IC(IC1902) TSOP4840SB1

91 Holder

See Contrast table(2)
92 Screw

See Contrast table(2)
93 Choke Coil(L981) CTH1280

(1) EXTERIOR SECTION PARTS LIST

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

10

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DEH-P250/XM/UC

Part No.

Mark No. Symbol and Description 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
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

(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:

Part No.

Mark No. Symbol and Description DEH-P250/XN/UC DEH-P2500/XN/UC DEH-P25/XN/UC

16 Panel CNS6935 CNS7309 CNS7309
35 Holder CNC8659 CNC8659 CNC8659
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

11

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

12

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12

34

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E

D

C

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A

DEH-P250/XM/UC

2.3 CD MECHANISM MODULE

1

1

1

2

1

2

1

2

2

2

1

1

1

1

2

1

3

1

1

1

1

1GEM1024
2GEM1045
3GEM1035

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

13

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

1 CD Core Unit(S10) CWX2708
2 Connector(CN101) CKS4182
3 Connector(CN701) CKS4188
4 Screw BMZ20P035FTC
5 Screw BSZ20P040FTC

6 Screw(M2x4) CBA1362
7 Screw(M2x3) CBA1511
8 Screw(M2x3) CBA1527
9 Washer CBF1037

10 Washer CBF1038

11 Washer CBF1060
12 Spring CBH2390
13 Spring CBH2606
14 Spring CBH2607
15 Spring CBH2608

16 Spring CBH2609
17 Spring CBH2610
18 Spring CBH2611
19 Spring CBH2612
20 Spring CBH2613

21 Spring CBH2614
22 Spring CBH2615
23 Spring CBH2616
24 Spring CBH2617
25 Spring CBH2620

26 Spring CBH2621
27 Spring CBH2641
28 Spring CBH2642
29 Spring CBH2643
30 Spring CBH2659

31 Spring CBH2688

* 32 Spring CBL1614

33 Shaft CLA3845
34 Frame CNC9962
35 Frame CNC9963

36 Bracket CNC9966
37 Bracket CNC9967
38 Arm CNC9968
39 Arm CNC9973
40 Lever CNC9983

41 Lever CNC9984
42 Sheet CNM8134
43 Collar CNV6906
44 Guide CNV6925
45 Arm CNV7198

46 Rack CNV7199
47 Holder CNV7201
48 Holder CNV7202
49 Arm CNV7203
50 Gear CNV7207

51 Gear CNV7208
52 Gear CNV7209
53 Gear CNV7210
54 Gear CNV7211
55 Gear CNV7212

56 Rack CNV7214
57 Arm CNV7215
58 Arm CNV7216
59 Guide CNV7217
60 Roller CNV7218

61 Gear CNV7219
62 Arm CNV7221
63 Arm CNV7220
64 Arm CNV7222
65 Damper CNV7313

66 Damper CNV7314
67 Arm CNV7341
68 Arm CNV7342
69 Guide CNV7360
70 Guide CNV7361

71 Holder CNV7437
72 Arm CNV7444
73 Gear CNV7595
74 Damper CNV7618
75 Motor Unit(M1) CXB6007

76 Chassis Unit CXB8728
77 Screw Unit CXB8729
78 Gear Unit CXB8731
79 Arm Unit CXB8732
80 Arm Unit CXB8735

81 Arm Unit CXB8852
82 Motor Unit(M2) CXB8933
83 Bracket CNC9985
84 Screw JFZ20P020FTC
85 Screw(M2x5) EBA1028

86 Screw JFZ20P020FTC
87 Screw JGZ17P022FTC
88 Washer YE15FTC
89 Washer YE20FTC
90 Pickup Unit(Service)(P10) CXX1641

91 Screw IMS26P030FMC

- CD MECHANISM MODULE SECTION PARTS LIST

14

1

234

12

34

F

E

D

C

B

A

DEH-P250/XM/UC

CN701

CN101

Q101

M

LASER
DIODE

MONITOR

DIODE

CLAMP

HOME

X201

12EJ 8EJ DSCSNS

FOCUS ACT.

SPINDLE

MOTOR

M

CARRIAGE

MOTOR

LOADING/

TRACKING ACT.

LD+

MD

FOP

TOP

14

5

4

1

PICKUP UNIT
(SERVICE)(P10)

HOLOGRAM

UNIT

IC 301

BA5996FP

IC 201

UPD63712GC

IC 701

NJM2391DL1-33

3.3V REGULATOR

SERVO

CONTROL,

DSP,

LPF, DAC

ACT,MOTOR

DRIVER

1

VD

VD

3R3V

7

CONT

11

CLMP

5

LOEJ

6

DSCSNS

8

LOUT

TOP

FOP

16

SOP

15

SOM

17

LCOM

18

LCOP

22

1

LOEJ

23

20

LOUT

XTAL

xtal

24

9

CONT

12

FOP

FD, TD, SD, MD

AC, F, E, BD

1

LD

2

PD

42

LIMIT

3

13

TOP

D

CD CORE UNIT(S10)

D

2

16

SO

12

XSI

ASENBO

37

mute

X1

X2

3

PEE

100

41

5

6

4

71

86

85

24

SYSTEM CONTROLLER

IC 601(2/2)

PE5341C

CN401

1

2

BUS-

BUS+

BUS+L

BUS-L

TX

RX

IPPW

swvdd

BU

VDD

BU

CN721

Q751

Q752

TUNER AMP UNIT

16

X601

15

EVST,EVCK,EVDT

TUN L

BUS+L

BUS-L

CD L

96

DPDT

95

KYDT

21

SYSPW

ejectin

8

20

ILMPW

S

DETACH SENSE

90

dsens

A

5

8

1

7

CN101

11

BUZZER

20

15

11

17

16

14

21

IC 101

HA12187FP

IP-BUS DRIVER

1

2

8

6

5

TX

RX

IPPW

BU

Q101

Q102

CDLOEJ

59

CONT

61

DSCSNS

79

XTALEN

63

TUN 3.3V

SYS 8.4V

VDD

64

VDCONT

CLMP

TC7SET08FU

IC 722

24

XSI

66

6

80

VDSENS

VDSENS

ANTENNA

FLPILM

9

Q601

83

AVREF

22

adpw

V

FMRF

ANT adj

RF adj

FM ANT

T51

CF52

CF51

RFGND

OSCGND

DGND

AUDIOGNDNCVCC

VDD_3.3

3.3V

2.5V

IC 4

3.3V 2.5V

←

IC 2

2.5V

WC

CE2

ROM_VDD

SL

DI

CK

CE1

NC

DO

NCNCNC

NC

7 6 13 5 10 9 8 11 14 18 19 20 21

1

3

212 1522 16 4 17

IC 1

3.3V

AM ANT

FMRF

ATT

LPF

OSC

IC 3 EEPROM

5.0V

IC 5

5V 3.3V

←

ATT

MIXER, IF AMP

DET, FM MPX

24

23

Rch

Lch

FM/AM TUNER UNIT

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

15

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

11

1

bsens

asens

VDD

BU

92

93

10

FL

11

RL

ILB

SWVDD

ILB

SWDVDD

23

21

3

5

FL-

FL+

RL-

RL+

ACC

IN2-L

3

IN4+L

5

IN4-L

6

IN3-L

4

FLIN

14

RLIN

12

22 4

RESET

POWER AMP

IC 601(1/2)

PE5341C

IC 131

PML003AM

IC 651

BD4834G

IC 301

PAL007A

reset

VDD

Q901

Q931

SYSPW

ELECTRONIC VOLUME/

SOURCE SELECTOR

BU

VDD

STBYMUTE

IC 1901

PD6340A

LCD DRIVER/

KEY CONTROLLER

KEY MATRIX

9

11

KEY DATA

VDD

55

CN1901

Q961

Q962

Q971

KEYBOARD UNIT

X601

2

TUN L

DPDT

3

5

DPDT

KYDT

SYS 8.4V

BU

Q912

Q913

BU

Q301

MUTE

RL

RL

Q351

7

2

11

14

7

2

11

14

CN1950

CN1951

KYDT

4

2

10

8

IC 1902

TSOP4840SB1

REMOTE CONTROL SENSOR

OPT IN

3
1

17

RFM

18

20

DPDT

KTDT

LCD

PANEL UNIT

MUTE

RL

S801

DETACH SENSE

SYSTEM CONTROLLER

25

B.REMOTE

FL­FL+
RL­RL+

VDD REGULATOR

BACKUP SENSE

ACC SENSE

SYS 8.4V REGULATOR

14

8

6

5

7

16

11

14

8

6

5

7

16

11

15 15

B

C

CN981

Q502

BU

CN351

BACK UP

GND

FUSE

10A

ACC

B.REM

SL

TUNPCE2

TUNPCE1

TUNPDI

TUNPDO

74

32

99

94

98

TUNPCK

97

CE2

CE1

4

BA033FP

IC 921

13

SYS 8.4V

TUN 3.3V

TUNER 3.3V REGULATOR

Q911

DO

DI

CK

Q902

DALMON

10

BU

20

Q501

VLCD

11

810

10

5

BL+B

PRE OUT

CN831

8

8

S1970

EJECT

9

9

BU

5

6

5

6

Q831

Q601

VDD

16

1

234

12

34

F

E

D

C

B

A

DEH-P250/XM/UC

R4721

0R0

R9101

0R0

R9403

0R0

PE5

B

PANEL
UNIT

C

CN1901

D

CN701

FM/AM TUNER UNIT

IP-BUS

DETACH SENSE SW

EJECT

FM(30%):-30.0dBs
AM(30%):-30.0dBs

IP-BUS:+2.2dBs

CD:0dBs

FM:-31.0dBs

AM:-31.0dBs

IP-BUS:+2.2dBs

CD:0dBs

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

A B

A-a

Large size

A-b

SCH diagram

Guide page

A-a A-b

A-a

A-b

Detailed page

A-a

17

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

5341C

REAR
R CH

REAR
L CH

A

TUNER AMP UNIT

BACKUP

GND

RL—

RL+

FL—

FL+

B.REM

ACC

RR—

RR+

FR—

FR+

600µH

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

2.2 2R2

0.022 R022

←

←

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

NOTE :

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

FM:-5.9dBs

AM:-5.9dBs

IP-BUS:+10.3dBs

CD:+10.1dBs

FM:-6.66dBs
AM:-6.66dBs

IP-BUS:+9.54dBs

CD:+9.34dBs

FM:+30dBs
AM:+20dBs

IP-BUS:+36dBs

CD:+36dBs

A-b

A

18

1

234

12

34

F

E

D

C

B

A

DEH-P250/XM/UC

A-a

A-b
A-a

A-a

A-b

1

2

R4721

0R0

R9101

0R0

D

CN701

IP-BUS

IP-BUS:+2.2dBs

CD:0dBs

FM:-31.0dBs

AM:-31.0dBs

IP-BUS:+2.2dBs

CD:0dBs

19

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

A-a

A-b
A-a

A-a

A-b

B

3

4

PE5341C

R9403

0R0

B

PANEL

UNIT

C

CN1901

FM/AM TUNER UNIT

DETACH SENSE SW

EJECT

FM(30%):-30.0dBs

AM(30%):-30.0dBs

20

1

234

12

34

F

E

D

C

B

A

DEH-P250/XM/UC

A-a

A-b

A-b

1

2

REAR

R CH

REAR

L CH

A

TUNER AMP UNIT

FM:-5.9dBs

AM:-5.9dBs

IP-BUS:+10.3dBs

CD:+10.1dBs

FM:-6.66dBs

AM:-6.66dBs

IP-BUS:+9.54dBs

CD:+9.34dBs

21

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-P250/XM/UC

A-a

A-b

A-b

3

4

1C

BACKUP

GND

RL—

RL+

FL—

FL+

B.REM

ACC

RR—

RR+

FR—

FR+

600µH

Decimal points for resistor

and capacitor fixed values

are expressed as :

2.2 2R2

0.022 R022

←

←

Symbol indicates a resistor.

No differentiation is made between chip resistors and

discrete resistors.

NOTE :

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and

discrete capacitors.

FM:+30dBs

AM:+20dBs

IP-BUS:+36dBs

CD:+36dBs