PIONEER DEH-1550B 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-ZZU. NOV. 2002 Printed in Japan

ORDER NO.

CRT2970

HIGH POWER CD PLAYER WITH FM/AM TUNER

DEH-1550XU/ES

DEH-1550/XU/ES

- 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-1550BXU/ES

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

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DEH-1550/XU/ES

SAFETY INFORMATION

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.

[ 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:

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.

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.

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.

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.

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DEH-1550/XU/ES

- 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 39.

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

grating.(See p.36.)

4. In this product, because the memory capacity of the

microcomputer is insufficient, the test mode is not

installed. However grating of the pickup unit can be

confirmed.

CONTENTS

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

1. SPECIFICATIONS .......................................................................................................................................................4

2. EXPLODED VIEWS AND PARTS LIST.......................................................................................................................5

2.1 PACKING...............................................................................................................................................................5

2.2 EXTERIOR.............................................................................................................................................................6

2.3 CD MECHANISM MODULE .................................................................................................................................8

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM...................................................................................................10

3.1 BLOCK DIAGRAM ..............................................................................................................................................10

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ........................................................................................12

3.3 KEYBOARD UNIT ...............................................................................................................................................18

3.4 CD MECHANISM MODULE ...............................................................................................................................20

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

4.1 TUNER AMP UNIT .............................................................................................................................................24

4.2 KEYBOARD UNIT ...............................................................................................................................................28

4.3 CD MECHANISM MODULE ...............................................................................................................................30

5. ELECTRICAL PARTS LIST ........................................................................................................................................32

6. ADJUSTMENT .........................................................................................................................................................35

6.1 CD ADJUSTMENT .............................................................................................................................................35

6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT................................................................36

6.3 ERROR MODE ....................................................................................................................................................38

7. GENERAL INFORMATION .......................................................................................................................................39

7.1 DIAGNOSIS ........................................................................................................................................................39

7.1.1 DISASSEMBLY ..............................................................................................................................................39

7.1.2 CONNECTOR FUNCTION DESCRIPTION ....................................................................................................44

7.2 PARTS .................................................................................................................................................................45

7.2.1 IC ....................................................................................................................................................................45

7.2.2 DISPLAY.........................................................................................................................................................52

7.3 OPERATIONAL FLOW CHART...........................................................................................................................53

7.4 CLEANING ..........................................................................................................................................................54

8. OPERATIONS ...........................................................................................................................................................55

1. SPECIFICATIONS

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DEH-1550/XU/ES

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DEH-1550/XU/ES

1 Cord Assy CDE7060
2 Spring CBH1650
3 Screw CBA1002

* 4 Polyethylene Bag CEG-127

5 Screw CRZ50P090FTC

6 Screw TRZ50P080FTC

* 7 Polyethylene Bag CEG-158

8 Handle CNC5395
9 Bush CNV3930

10 Polyethylene Bag CEG-162

11-1 Owner’s Manual CRD3668

11-2 Installation Manual CRD3669

12 Carton(DEH-1550) CHG4991

Carton(DEH-1550B) CHG4992

13 Contain Box(DEH-1550) CHL4991

Contain Box(DEH-1550B) CHL4992

14 Protector CHP2663
15 Protector CHP2664
16 Case Assy CXB3520
17 Accessory Assy CEA3439

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

- 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.)

- Owner's Manual, Installation Manual

Model Part No. Language
DEH-1550/XU/ES CRD3668 English,Spanish,Portuguese(B),
DEH-1550B/XU/ES CRD3669 Arabic,Traditional chinese

14

17

1

16

10

12

13

15

5

9

2

8

7

6

4

3

11

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

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DEH-1550/XU/ES

2.2 EXTERIOR

7

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5

6

7

8

DEH-1550/XU/ES

1 Screw BSZ26P060FTC
2 Screw BSZ30P060FTC
3 Screw BSZ30P200FTC
4 Cord Assy CDE7060
5 Cable CDE7113

6 Fuse(10A) CEK1208
7

CD Mechanism Module(S10)

CXK5600
8 Case CNB2793
9 Holder CNC8659

10 Earth Plate CNC8915

11 Cushion CNM8275
12 Insulator CNM8059
13 Insulator CNM8174
14 Panel CNS7239
15 Tuner Amp Unit(DEH-1550) CWM8570

Tuner Amp Unit(DEH-1550B) CWM8571

16 Screw ASZ26P060FTC
17 Screw BPZ26P080FTC
18 Screw BSZ26P160FTC
19 Pin Jack(CN352) CKB1028
20 Terminal(CN402) CKF1059

21 Plug(CN901) CKM1376
22 Connector(CN831) CKS3581
23 Connector(CN651) CKS3835
24 Antenna Jack(CN401) CKX1056
25 Holder CND1241

26 Holder CND1328
27 Heat Sink CNR1668
28 FM/AM Tuner Unit CWE1646
29 Holder CND1054
30 Chassis Unit CXB9542

31 Detach Grille Assy(DEH-1550) CXB9573

Detach Grille Assy(DEH-1550B) CXB9574
32 Screw BPZ20P100FZK
33 Button(1-6) CAC7739
34 Button(Volume) CAC7740

35 Button(Up) CAC7741
36 Button(Down) CAC7742
37 Button(Eject) CAC7743
38 Button(Band) CAC7745
39 Button(Audio) CAC7746

40 Button(SRC-EQ) CAC7749
41 Button(Detach) CAC7753
42 Spring CBH2210
43 Cover CNS7232
44 Keyboard Unit(DEH-1550)CWM8578

Keyboard Unit(DEH-1550B) CWM8579

45 LCD(LCD1801)(DEH-1550) CAW1733

LCD(LCD1801)(DEH-1550B) CAW1734
46 Connector(CN1801) CKS3580
47 Holder CNC9617
48 Sheet CNM7932

49 Lens CNV7060
50 Lighting Conductor CNV7367
51 Rubber CNV7368
52 Connector CNV7369
53 Grille Unit(DEH-1550) CXB9505

Grille Unit(DEH-1550) CXB9806

54 Button CAC4836
55 Spring CBH1835
56 Spring CBH2208
57 Spring CBH2367
58 Bracket CNC6791

59 Holder CNC8042
60 Cover CNM6276
61 Panel CNS7238
62 Arm CNV4692
63 Arm CNV4728

64 Arm CNV5576
65 Screw IMS20P030FZK
66 IC(IC302) PAL007A
67 Screw ISS26P055FTC
68 Transistor(Q911,921,991) 2SD1275

69 Sheet(DEH-1550B) CNM7881

- EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

Mark No. Description Part No.

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C

2.3 CD MECHANISM MODULE

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DEH-1550/XU/ES

9

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

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DEH-1550/XU/ES

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

VDCONT

Q991

Q992

B.U

ANTENNA

CN402

IN2_L

IN3_L

61
76

55
56

11
12
13

2

3

CN651

SYS

CONTR

IC 60

PE5

29

28

27

65

41

VDCONT

DSCSNS

LOEJ

CONT

LOEJ

CONT

TUNER AMP UNIT

VD

A

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
2

VD

VD

3R3V

7

CONT

11

CLMP CLAMSW

5

LOEJ

6

DSCSNS DSCSNS

8

21
20

15

11

17

16

14

LOUT

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)

C

CLAMSW

VDD

CE2

CE1

VDD

IC652

TC7SET08FU

16

XSI

1

5

4

FMRF

ANT adj

RF adj

FM ANT

T51

CF52

CF51

VCC

VDD_3.3

VCC

TUN3V

3.3V

2.5V

IC 4

3.3V 2.5V

←

IC 2

2.5V

CE2

ROM_VDD

SL

DI

TUNPDI

CK TUNPCK

CE1

LDET

DO TUNPDO

6 13 5 10 9 8 11 14

1

3

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

23

Lch

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-1550/XU/ES

11

KYDT
DPDT

IC 1801

PD6340A

3
4

5

3
4

5

KEY MATRIX

LDET
SL

TUNPCE2
TUNPCE1
TUNPDI
TUNPDO

IN2_L

IN3_L

61
76

55
56

11
12

TUNPCK

13

2

3

SYSTEM

CONTROLLER

IC 601 (1/2)

PE5330A

VCK
VDT
VST

B.U

VDD

Q911

B.U

BACKUP

FL­FL+
RL­RL+

ACC

16
15

7
5
8
6

14

ELECTRONIC VOLUME

IC 151

PML003AM

SYSTEM

CONTROLLER

IC 601(2/2)

PE5330A

ASENS

64

BSENS

63

SYSPW

43

MUTE

48

KYDT

8

DPDT

9

RESET

60

SWVDD

21

Frontout_L

10

Rearout_L

11

POWER AMP

IC 302

PAL007A

14
12

22 4

5

3

21

23

FL

MUTE STBY

25

RL

B.U

bsens

asens

Q931

Q452 MUTE

KEYBOARD UNIT

CN1801CN831

LCD

20
18

Q801

RESET

IC 603

S-80834ANY

VDD

12

SYSPW

11

B.REM

FUSE

10A

VDCONT

DSCSNS

LOEJ

CONT

VST/ VCK/ VDT

VDD

VDD
VLCD

56
10

CN901

Q 352

CN352

REAR L CH

Q453

BACK UP

FL-

FL+

RL-

RL+

B.REM

ACC

GND

B

KYDT
DPDT

SW5V

KEY CONTROLLER

LCD DRIVER

16

15

7
5
8
6

14

11

SYSPW

Q921

Q922

B.U

VCC

Q923

1

4

RESET

IC 961

S-80834CNY

12

SYS 8V REGULATOR

VDD REGULATOR

CLAMSW

CE2

CE1

TUN3V

TUN 3V

IC 901

BA033SFP

4

VCC

XSI

12

A-aA-a

A-b A-b

A-b A-b

A-a A-a

e

m

Guide page

Detailed page

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

.

A-a

A

B

CN1801

C

CN701

FM/AM TUNER UNIT

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DEH-1550/XU/ES

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

"ELECTRICAL PARTS LIST"

Large siz

SCH diagra

13

A-b

A

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.

CEK1136

>

10A

RR+

RR-

FR+

FR-

FL-

RL+

FL+

RL-

GND

REAR
L CH

REAR
R CH

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.

A

TUNER AMP UNIT

600

µH

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-1550/XU/ES

14

C

CN701

FM/AM TUNER UNIT

1

234

12

34

F

E

D

C

B

A

DEH-1550/XU/ES

15

A-a

A-b
A-a

A-a

B

CN1801

5

6

7

8

F

E

D

C

B

A

5

6

7

8

DEH-1550/XU/ES

16

1

234

12

34

F

E

D

C

B

A

DEH-1550/XU/ES

A-a

A-b

A-b

CEK1136

>

10A

GND

600µH

REAR

L CH

REAR

R CH

A

TUNER AMP UNIT

1

2 3

17

A-a

A-b

A-b

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.

RR+

RR-

FR+

FR-

FL-

RL+

FL+

RL-

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.

4 5

5

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8

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A

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DEH-1550/XU/ES

3.3 KEYBOARD UNIT

B