Pioneer DEH-3750MP, DEH-3770MP User Manual

ORDER NO.

CRT3399

DEH-3750MP/XU/GS

HIGH POWER CD/MP3/WMA PLAYER WITH FM/AM TUNER

DEH-3750MP

DEH-3770MP DEH-3750MP

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

/XU/CS /XU/CN

/XU/GS

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

1234

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

A

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.

B

Replaced 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 described in this manual.

C

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

1234

DEH-3750MP/XU/GS

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-3750MP/XU/GS

E

F

7

8

3

1234

1. SPECIFICATIONS

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

5

1234

A

B

C

D

E

F

6

1234

DEH-3750MP/XU/GS

5678

A

B

C

D

E

56

DEH-3750MP/XU/GS

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 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.)

2.1 PACKING

"

B

18

C

17

D

4

5

8

14

6

7

9

10

11

1

2

12

15

13

16

E

F

8

1234

DEH-3750MP/XU/GS

5678

(1) PACKING SECTION PARTS LIST

Mark No. Description Part No.

1 Accessory Assy CEA4850 2 Screw Assy CEA3849 3 ••••• 4 Screw CBA1650 * 5 Polyethylene Bag CEG-127

6 Screw CRZ50P090FTC 7 Screw TRZ50P080FTC * 8 Polyethylene Bag CEG-158 9 Handle CNC5395 10 Bush CNV3930

11 Polyethylene Bag CEG-162 12 Carton See Contrast table(2)

Mark No. Description Part No.

13 Contain Box See Contrast table(2) 14 Protector XHP7004 15 Protector XHP7003

16-1 Owner's Manual See Contrast table(2) 16-2 Installation Manual See Contrast table(2) 16-3 Caution Card See Contrast table(2) * 16-4 Warranty Card See Contrast table(2) 17 Cord Assy XDE7008

18 Case Assy YXB5005 * 19 Battery CEX1065 20 Remote Control Unit CXC3173

(2) CONTRAST TABLE

DEH-3750MP/XU/GS, DEH-3770MP/XU/CS and DEH-3750MP/XU/CN are constructed the same except for the following:

Mark No. Description DEH-3750MP/XU/GS DEH-3770MP/XU/CS DEH-3750MP/XU/CN

12 Carton YHG5020 YHG5019 YHG5023 13 Contain Box YHL5020 YHL5019 YHL5023 16-1 Owner's Manual YRD5021 YRD5025 YRB5011 16-2 Installation Manual YRD5024 YRD5026 YRB5013 16-3 Caution Card CRP1310 CRP1310 Not used

A

B

C

* 16-4 Warranty Card Not used Not used ARY7046

Owner's Manual,Installation Manual

Part No. Language

YRD5021 English, Traditional Chinese, Arabic YRD5024 English, Traditional Chinese, Arabic YRD5025 English, Spanish, Portuguese(B) YRD5026 English, Spanish, Portuguese(B) YRB5011 Casual Chinese YRB5013 Casual Chinese

D

E

56

DEH-3750MP/XU/GS

F

7

8

9

1234

2.2 EXTERIOR

58

62

57

64

63

56

59

C

65

6

18

9

8

19

70

A

60

A

13

75

74

44

31

10

31

66

65

61

65

B

52

B

42

36

35

43

53

33

C

71

2

41

39

38

34

2

49

2

32

17

37

3

23

48

68

76

47

40

68

17

25

50

67

46

51

27

B

22

16

30

31

45

28

20

55

31

69

21

D

12

5

14

E

B

54

F

15

A

4

C

A

4

26

29

7

10

1234

DEH-3750MP/XU/GS

5678

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No.

1 ••••• 2 Screw BSZ26P060FTC 3 Screw BSZ30P060FTC 4 Screw BSZ30P200FTC 5 Cable YDE5008

6 Case CNB2793 7 Holder CNC8659 8 Earth Plate CNC8915 9 Cushion CNM8890 10 Panel See Contrast table(2)

11 ••••• 12 13 Cord Assy XDE7008 14 Insulator XNM7106 15 Insulator YNM5012

16 Tuner Amp Unit See Contrast table(2) 17 Screw ASZ26P060FTC 18 Screw BPZ26P080FTC 19 Screw BSZ26P160FTC > 20 Fuse(10A) CEK1208

21 Pin Jack(CN352) CKB1057 22 Plug(CN901) CKM1376 23 Connector(CN721) CKS3837 24 ••••• 25 Connector(CN831) CKS4944

26 Antenna Jack(CN401) CKX1056 27 Holder CND1328 28 Heat Sink CNR1668 29 Holder CND1054 30 Holder YNC5004

31 Screw BPZ20P100FZK 32 Spring CBH2210 33 Knob(VOLUME) See Contrast table(2) 34 Button(DETACH) YAC5027 35 Button(SOURCE) YAC5030

36 Button(1-6, LOCAL/BSM) YAC5031 37 Button(AUDIO, LOUDNESS) YAC5032 38 Button(BAND) YAC5033 39 Button(EJECT, DISPLAY) YAC5034

CD Mechanism Module(S10.1AACA)

See Contrast table(2)

Mark No. Description Part No.

40 Button(DOWN, RIGHT) See Contrast table(2)

41 Button(UP, LEFT) See Contrast table(2) 42 Button(CLOCK, EQ) YAC5039 43 Spring YBL5001 44 Cover YNS5038 45 Connector(CN1801) CKS4943

46 Sheet CNM7932 47 Connector CNV7369 48 LCD(LCD1801) See Contrast table(2) 49 Holder YNC5005 50 Lighting Conductor YNV5004

51 Lighting Conductor YNV5005 52 Rubber Contact YNV5006 53 Grille Unit See Contrast table(2) 54 Chassis Unit YXA5080 55 Button(DETACH) CAC4836

56 Spring CBH1835 57 Spring CBH2208 58 Spring CBH2367 59 Bracket CNC6791 60 Holder CNC8042

61 Cover CNM6276 62 Arm CNV4692 63 Arm CNV4728 64 Arm CNV5576 65 Screw IMS20P030FZK

66 Panel YNS5046 67 IC(IC921) NJM2388F84 68 Transistor(Q911, 991) 2SD2396 69 IC(IC302) PAL007A 70 FM/AM Tuner Unit(Z401) CWE1646

71 Sheet See Contrast table(2) 72 Remote Control Unit CXC3173 73 Cover CNS7068 74 Cushion YNM5004 75 IC(IC1802) TSOP4840SB1

76 Sheet See Contrast table(2)

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

11

1234

(2) CONTRAST TABLE

DEH-3750MP/XU/GS, DEH-3770MP/XU/CS and DEH-3750MP/XU/CN are constructed the same except for the following:

Mark No. Description DEH-3750MP/XU/GS DEH-3770MP/XU/CS DEH-3750MP/XU/CN

A

10 Panel YNS5045 YNS5045 CNS8046 12 16 Tuner Amp Unit YWM5037 YWM5073 YWM5039 33 Knob(VOLUME) YAA5002 YAA5002 YAA5001 40 Button(DOWN, RIGHT) YAC5038 YAC5038 YAC5035

41 Button(UP, LEFT) YAC5037 YAC5037 YAC5036 48 LCD(LCD1801) YAW5027 YAW5015 YAW5027 53 Grille Unit YXA5082 YXA5051 YXA5052 71 Sheet Not used Not used CNM9404 76 Sheet YNM5011 Not used YNM5011

B

CD Mechanism Module(S10.1AACA)

CXK5668 CXK5668 CXK5669

C

D

E

F

12

1234

DEH-3750MP/XU/GS

5678

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

13

1234

2.3 CD MECHANISM MODULE

42

A

5

13

5

81

34

5

15

22

E

F

93

13

A

B

44

5

B

1

54

53

C

52

13

D

86

82

83

4

37

71

4

29

51

1

73

50

72

10

1

I

76

55

5

36

4

1

18

2

64

47

C

24

2

1

7

61

2

M

1

23

87

75

B

E

63

57

62

58

1

G

L

1

N

R

1

2

1

40

56

D

O

16

P

1

33

1

P

19

J

12

3

20

39

1

69

30

2

21

M

D

79

2

1GEM1024 2GEM1045 3GEM1035

E

92

26

G

68

28

I

H

28

45

J

38

23

K

59

49

F

Q

A

27

H

77

90

48

8

67

17

78

25

70

60

80

N

L

K

43

46

6

60

11

89

10

14

74

R

31

41

85

C

91

F

C

65

1

2

3

85

66

35

O

31

Q

14

85

14

1234

DEH-3750MP/XU/GS

5678

CD MECHANISM MODULE SECTION PARTS LIST

Mark No. Description Part No.

1 CD Core Unit(S10.1) CWX3096 2 Connector(CN101) CKS4182 3 Connector(CN901) CKS4017 4 Screw BMZ20P035FTC 5 Screw BSZ20P040FTC

6 Screw(M2x4) CBA1362 7 Screw(M2x3) CBA1824 8 Screw(M2x3) CBA1825 9 ••••• 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 CBH2735 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 ••••• 33 Shaft CLA4441 34 Frame CND2443 35 Frame CNC9963

36 Bracket CND2712 37 Bracket CND1895 38 Arm CNC9968 39 Arm CND1909 40 Lever CND2032

41 Lever CNC9984 42 Sheet CNM8134 43 Collar CNV8447 44 Guide CNV8448 45 Arm CNV8403

46 Rack CNV8374 47 Holder CNV8376 48 Holder CNV8377 49 Arm CNV8378

No. Description Part No.

Mark

50 Gear CNV8379

51 Gear CNV8380 52 Gear CNV8381 53 Gear CNV8382 54 Gear CNV8383 55 Gear CNV8384

56 Rack CNV8385 57 Arm CNV8386 58 Arm CNV8387 59 Guide CNV8388 60 Roller CNV8189

61 Gear CNV8389 62 Arm(GS, CS) CNV8391 Arm Unit(CN) CXC3865 63 Arm(GS, CS) CNV8390 Arm Unit(CN) CXC3864 64 Arm CNV8392 65 Damper CNV7313

66 Damper CNV7314 67 Arm CNV8394 68 Arm CNV8395 69 Guide CNV8396 70 Guide CNV8397

71 Holder CNV8398 72 Arm CNV8402 73 Gear CNV8400 74 Damper CNV7618 75 Motor Unit(M1) CXC4440

76 Chassis Unit CXC2318 77 Screw Unit CXB8729 78 Gear Unit CXC2397 79 Arm Unit CXC2316 80 Arm CND1896

81 Arm CND1894 82 Motor Unit(M2) CXB8933 83 Bracket CNC9985 84 ••••• 85 Screw(M2x5) EBA1028

86 Screw JFZ20P020FTC 87 Screw JGZ17P022FTC 88 ••••• 89 Washer YE20FTC 90 Pickup Unit(P10)(Service) CXX1647

91 Screw IMS26P030FTC 92 Spring CBL1635 93 Clamper CNV8372

A

B

C

D

E

F

56

DEH-3750MP/XU/GS

7

8

15

E

C P

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

VDD

76 13 5 1098 11 14 18192021

WC

CE2

ROM_VDD

IC 3 EEPROM

5.0V

OSC

LPF

IC 1

3.3V

MIXER, IF AMP

T51

CF52

RFGND

OSCGND

DGND

212 1522 16 4

AUDIOGNDNCVCC

CF51

VDD_3.3 17

3.3V

SL

5V 3.3V

3.3V 2.5V

TUN 3.3V SYS 8V

DI

CK

NC

CE1

IC 5

←

IC 4

←

2.5V

DO

NCNCNC

NC

IC 2

2.5V

DET, FM MPX

Rch

24

Lch

23

TUN L

2

CDL

3

CD CORE UNIT(S10.1)

C

PICKUP UNIT (P10)(SERVICE)

LASER DIODE

D

HOLOGRAM

FOCUS ACT.

TRACKING ACT.

MONITOR

DIODE

M1

SPINDLE

MOTOR

M2

LOADING/CARRIAGE

MOTOR

UNIT

M

CN101

LD-

15

MD

5

AC,BD

FOP

1

TOP

4

LD+

14

E

V3R3D

Q101

E,F

S904 12EJ

3

V3R3D

142

LD

143

PD

RF AMP, CD DECODER, MP3 AND WMA DECODER, DIGITAL SERVO/DATA PROCESSOR

FD,TD

12

FOP

13

TOP

CD

DRIVER

16

SOP

15

SOM

18

LCOP

17

LCOM

IC 301

BA5835FP

S905

S903

8EJ

DSCSNS

IC 203

NJM2885DL1-33

SD,MD

CONT

LOEJ

S901

HOME

IC 201

UPD63763GJ

53

22

9

47

32

31 30 97

1

3.3V REGULATOR

X701

1312

X1

MICRO

COMPUTER

LOEJ

CONT

IC 701

PE5454A

12EJ

8EJ DSCSNS

HOME

3VDD

VD2

31

LOUT

X2

14

reset

49

VDCONT

46

CD3VON

3V REGULATOR

3

IC 703

S-812C33AUA-C2N

CN901

LOUT

RESET

BRST,BRXEN,BSRQ

BDATA,BSCK

VD

VDCONT

2

VDD

CD3VON

CN721

CD L

14

10

SYSTEM

I

RESET RST

15

9

VD

VDD

VD2

VD1

3

21

4

20

VDCONT

19

5

19

VD2

22

2

CD3VCONT

1

23

A

XSI,XSCK,CLAMSW,VDCONT,XAO

VDD

Q993

Q994

Q991

Q992

43

5

B.UP

F

16

1234

DEH-3750MP/XU/GS

5678

A

REAR OUTPUT

Q352

R Lch

CN352

2

RST

A

RESET

IC 961

S-80834CNY

VDD

TUN L

CDL

TUNPDO

11

TUNPDI

12

TUNPCK

13

CE1

56

CE2

55

ELECTRONIC VOLUME/

SOURCE SELECTOR

2

IN1-L

IC 151

PML003AM

3

IN2-L

VCK, VDT, VST

MUTE

SYSPW

60

RESET

TUNPDI

TUNPDO

TUNPCK TUNPCE1 TUNPCE2

SYSTEM CONTROLLER

IC 601(1/2)

PE5460A

10

F Lch

11

R Lch

48

43

DALMON

BSENS

ASENS

MUTE

Q453

3

VDD REGULATOR

VDD

32

64

63

BSENS

ASENS

Q911

BACKUP SENSE

Q931

Q912

ACC

B.UP

CN901

B

FUSE

1

10A

3

BACK UP

ACC

ACC SENSE

GND

FLFL+ RL-

RL+

B. REM

C

MUTE

Q452

SYS8V

TU 3.3V

POWER AMP

14

12

22

TUN 3V REG.

IC 981

BA33BC0FP

FLIN

RLIN

MUTE

IC 302

PAL007A

STBY

4

20 6

VCC

B. REM

SYS 8V REG.

NJM2388F84

FLFL+ RLRL+

IC 921

SYSPW

B.UP

2

23 21 3 5

25

B. REM

B.UP

SYSPW

10

12

9

11

6

D

B.UP

SYSTEM CONTROLLER

IC 601(2/2)

PE5460A

SWVDD

SOURCE

DSENS

ILMPW

70

X1

X601

12.58291MHz

69

X2

CN1801CN831

SWVDD

3

SWVDD

SRC

4

DSENS

10

ILM

5

ROT1

6

ROT0

7

DPDT

8

KYDT

9

SOURCE

10

5

3

IL1801

6

7

8

9

LAMP

S1827

VOLUME

SWVDD

ROT1

ROT0

DPDT

KYDT

VDD

21

SWVDD

66

SOURCE

65

DSENS

B.UP

Q822

22

36

35

9

8

Q801

Q821

DEH-3750MP/XU/GS

56

REM.CON.

IC1802

TSOP4840SB1

17

19 10

57

7

DPDT

KYDT

VLCD VDD

1

REM

17

KEY MATRIX

KEY DATA

LCD DRIVER/

KEY CONTROLLER

IC 1801

PD6340A

KEYBOARD UNIT

B

22

XO

X1801 5MHz

23

XI

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

Large size

A-b

SCH diagram

Guide page

A-a A-b

A-a

C

CN901

2322212019181716151413121110987654321

A-b

Detailed page

471/16

A-a

B

C

GS,CN

D

STRKEY1

ADPW

BDATA

swvdd

FM/AM TUNER UNIT

VSS

AVDD

AVREF1

DISCSENS

SYSTEM CONTROLLER

brst

brxen

source

dsens

bsens

asens

STRKEY2

isens

bsrq

RECEIVE

E

ANTENNA

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.

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

F

A

18

1234

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

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.

DEH-3750MP/XU/GS

B

CN1801

5678

A-b

332/16

TUNER AMP UNIT

A

FM: 29.6dB AM: 19.1dB CD: 36.45dB

>

CEK1286

3A

REAR L CH

REAR R CH

A

B

C

source

TROLLER

dsens

bsens

asens

STRKEY2

isens

bsrq

RECEIVE

CEK1208

>

10A

D

E

56

DEH-3750MP/XU/GS

F

A

7

8

19

A

A-b

1234

asens

bsens

dsens

source

B

2322212019181716151413121110987654321

VSS

AVDD

AVREF1

DISCSENS

STRKEY1

GS,CN

C

CN901

C

A-b A-a

A-a

D

471/16

E

F

A-a

20

1234

DEH-3750MP/XU/GS

asens

bsens

dsens

source

5678

A

2

A-b

isens

STRKEY2

bsrq

RECEIVE

1

VSS

AVDD

AVREF1

STRKEY1

GS,CN

DISCSENS

brxen

brst

SYSTEM CONTROLLER

swvdd

ADPW

BDATA

B

CN1801

A-b A-a

A-a

B

C

D

ANTENNA

FM/AM TUNER UNIT

DEH-3750MP/XU/GS

56

Symbol indicates a resistor.

No differentiation is made between chip resistors and

discrete resistors.

NOTE :

7

E

Symbol indicates a capacitor.

No differentiation is made between chip capacitors and

discrete capacitors.

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

The > mark found on some component parts indicates

103 0.01uF

101/10 100uF/10V

F

the importance of the safety factor of the part.

Therefore, when replacing, be sure to use parts of

identical designation.

A-a

8

21

1234

A

REAR

L CH

REAR

R CH

B

3A CEK1286

>

TUNER AMP UNIT

A

FM: 29.6dB

CD: 36.45dB

C

A-b A-a

D

E

AM: 19.1dB

332/16

F

A-b

22

1234

DEH-3750MP/XU/GS

5678

A

10A

>

CEK1208

B

A-b A-a

C

D

E

1

DEH-3750MP/XU/GS

56

F

2

7

8

A-b

23

1234

3.3 KEYBOARD UNIT

A

B

C

D

E

LCD DRIVER/ KEY CONTROLLER

DIS

GS,CN : YAW5027

F

CS : YAW5015

B

24

1234

DEH-3750MP/XU/GS

5678

A

KEYBOARD UNIT

B

DISPLAY

40mA,14V

C

A

CN831

D

E

D1803,D1804

GS,CN : CL-490SWFSD(12)

CS : CL-490S-WF-SD

56

DEH-3750MP/XU/GS

F

B

7

8

25

1234

Y

3.4 CD MECHANISM MODULE(GUIDE PAGE)

A

PICKUP UNIT(P10)(SERVICE)

B

C-a

F

T

C

S

%

F

T

F

T T F F

T

F

F T T

#

@

C

D

3

2

1

E

M1 CXC4440

SPINDLE MOTOR

M2 CXB8933

LOADING

/CARRIAGE

MOTOR

S

C

T

9

F

0

F F T T

CD DRIVER

$

S

7

C

8

4

5

S

C

S

C

T

F

C

26

1234

DEH-3750MP/XU/GS

5678

A

C-b

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

←

2.2 2R2

←

SWITCHES: CD CORE UNIT(S10.1)

ras

!

S901:HOME SWITCH..........ON-OFF

S903:DSCSNS SWITCH......ON-OFF

S904:12EJ SWITCH.............ON-OFF

S905:8EJ SWITCH...............ON-OFF

The underlined indicates the switch position.

SIGNAL LINE

F

FOCUS SERVO LINE

T

TRACKING SERVO LINE

C

CARRIAGE SERVO LINE

S

SPINDLE SERVO LINE

CD CORE UNIT(S10.1)

C

0.022 R022

B

TYPE_A/D

MICRO COMPUTER

SRAMLEVEL2

SRAMLEVEL1 SRAMLEVEL0

3V REGULATOR

3.3V REGULATOR

C

D

A

CN721

6

E

^

&

DEH-3750MP/XU/GS

56

F

C

7

8

27

A

C-b

1234

1

2

B

C

C-b A-a

C-a

F

T

C

S

#

@

%

T

F

D

E

F

C-a

28

PICKUP UNIT(P10)

(SERVICE)

T

F

T

TFF

DEH-3750MP/XU/GS

1234

5678

A

2

3 4

5 6

C-b

B

4

C

7

$

S

T

8

C

T

C

S

CD DRIVER

C-b A-a

C-a

D

C

9

F

5

F

T

F

0

E

2

3

1

S

M1 CXC4440

SPINDLE MOTOR

C

DEH-3750MP/XU/GS

56

C

LOADING

/CARRIAGE

M2 CXB8933

7

MOTOR

8

F

C-a

29

1234

A

←

Decimal points for resistor

and capacitor fixed values

are expressed as :

2.2 2R2

0.022 R022

B

CD CORE UNIT(S10.1)

3.3V REGULATOR

C

SIGNAL LINE

FOCUS SERVO LINE

TRACKING SERVO LINE

CARRIAGE SERVO LINE

C

SWITCHES:

CD CORE UNIT(S10.1)

S901:HOME SWITCH..........ON-OFF

S903:DSCSNS SWITCH......ON-OFF

S904:12EJ SWITCH.............ON-OFF

S905:8EJ SWITCH...............ON-OFF

C-b C-a

D

F

The underlined indicates the switch position.

SPINDLE SERVO LINE

T

S

C

E

F

C-b

30

!

ras

1

2

DEH-3750MP/XU/GS

1234

5678

A

3V REGULATOR

CN721

A

6

B

^

&

C

SRAMLEVEL2

MICRO COMPUTER

SRAMLEVEL0

SRAMLEVEL1

C-b C-a

D

E

TYPE_A/D

F

2

3 4

DEH-3750MP/XU/GS

56

5 6

7

8

C-b

31

1234

- Waveforms Note : 1. The encircled numbers denote measuring points in the circuit diagram.

2. Reference voltage REFO1(1.65V)

A

1 DSCSNS 2 8SNS 3 12SNS 4 LOEJ

12 cm CD Loading operation

5V/div 5V/div 5V/div 5V/div

500ms/div

1 DSCSNS 5 CLCONT 4 LOEJ 6 VD

12 cm CD Loading operation 8 cm CD Loading operation

5V/div 5V/div 5V/div 10V/div

500ms/div

1 DSCSNS 2 8SNS 3 12SNS 4 LOEJ

5V/div 5V/div 5V/div 5V/div

500ms/div

Ref.: GND

Mode: Normal

B

7 SIN 8 CIN 9 TIN

12 cm CD-DA setup operation after loading 12 cm CD-ROM(3 sessions) setup operation

Ref.:

C

REFO

Mode: Normal

0 FIN ! RFOK 7 SIN

12 cm CD-DA Source On setup operation

D

1V/div 500mV/div 500mV/div

200mV/div 2V/div 2V/div

2s/div

500ms/div

Ref.: GND

Mode: Normal

7 SIN 8 CIN 9 TIN

12 cm CD-ROM(1 session) setup operation after loading

Ref.: REFO

Mode: Normal

@ TE # FE

Source On setup operation CD-DA Play operation

1V/div 500mV/div 500mV/div

500mV/div 500mV/div

1s/div

200ms/div

Ref.: GND

Mode: Normal

7 SIN 8 CIN 9 TIN

after loading

Ref.: REFO

Mode: Normal

# FE 0 FIN @ TE 9 TIN

1V/div 500mV/div 500mV/div

500mV/div 500mV/div 500mV/div 500mV/div

2s/div

20ms/div

Ref.: REFO

Mode: Normal

# FE 0 FIN

E

@ TE 9 TIN

CD-ROM play operation(Regular track Jump)

Ref.: REFO

Mode: Normal

F

32

500mV/div 500mV/div 500mV/div 500mV/div

1234

20ms/div

Ref.: REFO

Mode: Normal

$ MDX 7 SIN

Spindle waveform during play operation Spindle waveform during play operation

Ref.: REFO

Mode: Normal

1V/div 200mV/div

50ms/div

Ref.: REFO

Mode: Normal

$ MDX 7 SIN

(Wider)

Ref.: REFO

Mode: Normal

2V/div 1V/div

5µs/div

DEH-3750MP/XU/GS

5678

0 FIN # FE

Focus Search waveform

Ref.: REFO

Mode: TEST

% RFAGC @ TE 9 TIN

4 Tracks Jump waveform 32 Tracks Jump waveform

Ref.: REFO

Mode: TEST

500mV/div 500mV/div

1V/div 500mV/div 500mV/div

200ms/div

500µs/div

@ TE % RFAGC

500mV/div 500mV/div

2ms/div

% RFAGC @ TE 9 TIN

Track Open waveform 1 Track Jump waveform

Ref.: REFO

Mode: TEST

% RFAGC @ TE 9 TIN

10 Tracks Jump waveform

Ref.: REFO

Mode: TEST

1V/div 500mV/div 500mV/div

1ms/div

Ref.: REFO

Mode: TEST

% RFAGC @ TE 9 TIN

Ref.: REFO

Mode: TEST

1V/div 500mV/div 500mV/div

500µs/div

A

B

2ms/div

C

% RFAGC @ TE 8 CIN 7 SIN

Search operation(Outter to Inner)

Ref.: REFO

Mode: Normal

1 DSCSNS 5 CLCONT 4 LOEJ

12 cm CD Eject operation

Ref.: GND

Mode: Normal

1V/div 1V/div 500mV/div 2V/div

5V/div 5V/div 5V/div

200ms/div

500ms/div

^ LOUT & ROUT

Analog audio waveform

Ref.: AGND

Mode: Normal

1 DSCSNS 2 8SNS 3 12SNS 4 LOEJ

8 cm CD Eject operation

Ref.: GND

Mode: Normal

1V/div 1V/div

5V/div 5V/div 5V/div 5V/div

200µs/div

500ms/div

1 DSCSNS 2 8SNS 3 12SNS 4 LOEJ

12 cm CD Eject operation

Ref.: GND

Mode: Normal

7 SIN 8 CIN 9 TIN

CD-DA >> CD-ROM mode change(Band key)

Ref.: REFO

Mode: Normal

5V/div 5V/div 5V/div 5V/div

1V/div 500mV/div 500mV/div

500ms/div

D

E

56

DEH-3750MP/XU/GS

F

7

8

33

1234

7 SIN 8 CIN

A

9 TIN

CD-ROM >> CD-DA mode change(Band key)

Ref.: REFO

Mode: Normal

B

C

1V/div 500mV/div 500mV/div

500ms/div

% RFAGC 9 TIN @ TE 0 FIN

Black dot(800µm) during play

Ref.: REFO

Mode: Normal

1V/div 1V/div 1V/div 1V/div

500µs/div

D

E

F

34

1234

DEH-3750MP/XU/GS

5678

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

35

1234

4. PCB CONNECTION DIAGRAM

4.1 TUNER AMP UNIT

A

B

C

NOTE FOR PCB DIAGRAMS

1.The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic dia gram.

2.Viewpoint of PCB diagrams

Connector

P.C.Board

Capacitor

Chip Part

SIDE A

SIDE B

TUNER AMP UNIT

A

CORD ASSY

1

2

3

1

3456789101112131415

2

16

D

E

CN901

C

F

36

A

DEH-3750MP/XU/GS

1234

5678

SY

1112131415

16

REAR OUTPUT

14

2

3

ANTENNA

RCA

SIDE A

2

1

A

B

C

FRONT

B

CN1801

FM/AM TUNER UNIT

D

E

F

56

DEH-3750MP/XU/GS

A

7

8

37

1234

A

TUNER AMP UNIT

A

1

B

1

C

D

TEST

E

PCL

F

A

38

1234

DEH-3750MP/XU/GS

5678

SIDE B

1

A

B

C

ST

D

PCL

E

F

56

DEH-3750MP/XU/GS

A

7

8

39

1234

4.2 KEYBOARD UNIT

KEYBOARD UNIT

B

A

AUDIOEJECT

B

C

DISPLAY

UP

RIGHT

LEFT

LCD1801

LOUDNESS

DOWN

LOCAL/BSM

SIDE A

5

4

D

E

36

2 BAND

1

SOURCE

VOLUME

F

CLOCK

EQ

B

40

1234

DEH-3750MP/XU/GS

5678

KEYBOARD UNIT

B

SIDE B

A

B

C

A

D

CN831

E

F

B

56

DEH-3750MP/XU/GS

7

8

41

1234

4.3 CD CORE UNIT(S10.1)

CD CORE UNIT(S10.1)

C

A

M2

LOADING

B

/CARRIAGE

MOTOR

M1

SPINDLE

MOTOR

SIDE A

C

D

PICKUP UNIT(P10)(SERVICE)

E

A

CN721

HOME

EF

REFO1

F

C

42

1234

DEH-3750MP/XU/GS

5678

CD CORE UNIT(S10.1)

C

SIDE B

A

DSCSNS

8EJ

12EJ

B

C

D

E

F

56

DEH-3750MP/XU/GS

7

8

43

1234

5. ELECTRICAL PARTS LIST

NOTE:

A

• Parts whose parts numbers are omitted are subject to being not supplied.

• The part numbers shown below indicate chip components.

Chip Resistor RS1/_S___J,RS1/__S___J

Chip Capacitor (except for CQS.....)

CKS....., CCS....., CSZS.....

• The > mark found on some component parts indicatesthe importance of the safety factor of the part.

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

B

Circuit Symbol and No. Part No.

A

Unit Number:YWM5037(GS) Unit Number:YWM5073(CS) Unit Number:YWM5039(CN) Unit Name:Tuner Amp Unit

MISCELLANEOUS

C

IC 151 (B,132,80) IC PML003AM IC 302 (A,93,132) IC P AL007A IC 601 (B,85,52) IC PE5460A IC 921 (A,6,119) IC NJM2388F84 IC 961 (A,46,62) IC S-80834CNY

IC 981 (B,146,27) IC BA33BC0FP Q 352 (B,159,125) Transistor IMH3A Q 452 (B,140,115) Transistor DTC124EU Q 453 (B,135,107) Transistor DTA124EU Q 801 (B,28,25) Transistor 2SA1036K

Q 821 (B,20,29) Transistor 2SA1036K

D

Q 822 (B,17,33) Transistor DTC114EU Q 911 (A,6,100) Transistor 2SD2396 Q 912 (B,17,64) Transistor IMD2A Q 931 (B,70,86) Transistor IMX1

Q 991 (A,6,66) Transistor 2SD2396 Q 992 (B,25,50) Transistor IMD2A Q 993 (B,32,41) Transistor 2SA1036K Q 994 (B,39,41) Transistor DTC114EU D 831 (A,139,18) Diode 1SS133

D 832 (A,122,23) Diode 1SS133

E

D 833 (A,114,24) Diode 1SS133 D 834 (A,111,19) Diode 1SS133 D 835 (A,113,10) Diode 1SS133 D 836 (A,126,25) Diode 1SS133

D 837 (A,134,21) Diode 1SS133 D 838 (A,119,18) Diode 1SS133 D 839 (A,117,18) Diode 1SS133 D 840 (A,118,15) Diode 1SS133 D 841 (A,116,15) Diode 1SS133

D 842 (A,130,25) Diode 1SS133 D 901 (A,69,113) Diode S5688G

F

D 902 (A,72,110) Diode S5688G D 911 (A,30,78) Diode S5688G D 912 (A,18,60) Diode HZS6L(B2)

44

1234

D 931 (A,55,93) Diode HZS7L(C3) D 932 (A,60,91) Diode HZS7L(A1) D 971 (A,60,104) Diode S5688G D 972 (A,57,104) Diode S5688G D 991 (A,13,48) Diode HZS7L(C3)

L 151 (A,141,79) Inductor LAU2R2K L 401 (A,155,55) Inductor LAU1R0K L 402 (A,155,92) Inductor LAU1R0K L 404 (A,155,99) Ferri-Inductor LAU4R7K L 601 (A,64,64) Inductor LAU1R0K

L 604 (A,104,66) Inductor LAU1R0K L 801 (A,28,15) Inductor LAU2R2K L 901 X 601 >FU352 (B,140,136) Fuse 3A CEK1286

Z 401 (A,163,100) FM/AM Tuner Unit CWE1646 AR401 (A,159,119) Surge Protector DSP-201M-S00B > Fuse 10A CEK1208

RESISTORS

R 153 (B,127,104) RS1/16S471J R 154 (B,147,93) RS1/16S471J R 155 (B,127,102) RS1/16S471J R 156 (B,136,94) RS1/16S471J R 157 (B,84,79) RAB4C102J

R 301 (A,100,96) RD1/4PU153J R 353 (B,141,122) RS1/16S471J R 354 (B,163,125) RS1/16S471J R 357 (B,145,130) RS1/16S223J R 358 (B,160,134) RS1/16S223J

R 405 (B,158,62) RS1/16S681J R 407 (B,159,83) RS1/16S681J R 408 (B,159,85) RS1/16S681J R 409 (B,159,86) RS1/16S681J R 410 (B,159,88) RS1/16S681J

R 414 (B,156,88) RS1/16S0R0J R 420 (B,105,44) RS1/16S681J R 421 (B,159,79) RS1/16S473J R 454 (B,133,114) RS1/16S103J R 455 (B,141,132) RS1/16S153J

R 456 (B,139,132) RS1/16S221J R 457 (A,120,54) RD1/4PU681J R 601 (B,102,49) (GS,CN) RS1/16S473J R 602 (B,102,51) RS1/16S473J R 603 (B,63,75) RS1/16S103J

R 604 (B,60,75) RS1/16S103J

DEH-3750MP/XU/GS

Circuit Symbol and No. Part No.

(A,35,103) Choke Coil 600µH CTH1280

(A,101,61) Radiator 12.58291MHz

CSS1402

5678

Circuit Symbol and No. Part No.

R 605 (B,84,21) RS1/16S222J R 606 (B,110,41) RS1/16S104J R 608 (B,104,63) RS1/16S0R0J R 609 (A,102,47) RD1/4PU473J

Circuit Symbol and No. Part No.

R 981 (A,136,38) RD1/4PU1R8J R 991 (A,13,53) RD1/4PU271J R 992 (A,18,50) RD1/4PU121J R 995 (B,28,42) RS1/16S103J

A

R 610 (A,129,44) RD1/4PU681J R 611 (B,105,50) RS1/16S473J R 612 (B,111,14) RS1/16S104J R 613 (B,107,24) RS1/16S473J R 614 (B,123,36) RS1/16S104J

R 620 (B,94,40) RS1/16S0R0J R 633 (B,65,40) RS1/16S104J R 720 (B,65,23) RS1/16S473J R 722 (B,55,27) RS1/16S682J R 723 (B,55,43) RS1/16S682J

R 724 (B,45,16) RS1/16S473J R 725 (B,44,36) RS1/16S682J R 727 (A,35,22) RD1/4PU682J R 735 (B,56,28) RS1/16S102J R 739 (B,53,36) RS1/16S0R0J

R 740 (B,54,34) RS1/16S0R0J R 744 (B,45,55) RS1/16S221J R 745 (B,54,24) RS1/16S221J R 746 (B,55,19) RS1/16S221J R 747 (A,88,33) RD1/4PU221J

R 748 (B,90,24) RS1/16S221J R 750 (B,61,22) RS1/16S0R0J R 751 (B,55,21) RS1/16S0R0J R 801 (B,24,27) RS1/16S153J R 802 (B,28,20) RS1/16S153J

R 803 (B,13,36) RS1/16S222J R 821 (B,22,33) RS1/16S222J R 823 (B,26,31) RS1/16S103J R 833 (B,105,16) RS1/16S222J R 834 (B,88,15) RS1/16S222J

R 836 (B,131,21) RS1/16S104J R 837 (A,128,21) RD1/4PU103J R 838 (A,113,44) RD1/4PU102J R 841 (B,15,28) RS1/16S1R0J R 848 (A,100,41) RD1/4PU102J

R 851 (A,97,41) RD1/4PU102J R 852 (B,112,17) RS1/16S102J R 853 (B,107,22) RS1/16S102J R 854 (B,105,14) RS1/16S222J R 855 (B,103,20) RS1/16S222J

R 857 (B,104,18) RS1/16S222J R 858 (A,127,27) RD1/4PU102J R 911 (B,11,68) RS1/16S223J R 912 (A,14,68) RD1/4PU152J R 923 (B,10,110) RS1/16S473J

R 931 (B,62,92) RS1/16S473J R 932 (B,65,85) RS1/16S104J R 933 (A,54,99) RD1/4PU102J R 934 (B,64,95) RS1/16S473J R 935 (B,64,92) RS1/16S473J

R 936 (B,70,89) RS1/16S473J R 940 (B,66,74) RS1/16S104J R 941 (B,66,72) RS1/16S104J R 955 (B,42,76) RS1/16S473J R 961 (B,59,68) RS1/16S102J

R 962 (B,45,66) RS1/16S822J

56

R 996 (B,26,44) RS1/16S222J

CAPACITORS

C 151 (B,159,71) CKSRYB224K16 C 152 (B,159,73) CKSRYB224K16 C 153 (B,122,74) CKSRYB105K10 C 154 (B,145,82) CKSRYB105K10 C 155 (A,121,78) CEJQ4R7M35

C 156 (A,143,88) CEJQ4R7M35 C 157 (B,123,85) CKSRYB153K50 C 158 (B,143,95) CKSRYB153K50 C 161 (B,125,99) CCSRCH100D50 C 162 (B,139,94) CCSRCH100D50

C 163 (B,131,95) CCSRCH100D50 C 164 (B,139,96) CCSRCH100D50 C 165 (B,140,70) CKSRYB104K16 C 166 (A,135,66) CEJQ470M10 C 167 (A,124,66) CEJQ100M16

C 301 (A,135,111) CFTNA224J50 C 302 (A,145,119) CFTNA224J50 C 303 (A,130,111) CFTNA224J50 C 304 (A,143,125) CFTNA224J50 C 309 (B,135,136) CKSQYB225K10

C 310 (B,122,143) CKSQYB225K10 C 312 (A,100,118) CEJQ100M16 C 313 (B,40,122) CKSRYB104K16 C 353 (A,132,102) CEJQ2R2M50 C 354 (A,140,102) CEJQ2R2M50

C 401 (B,164,67) CKSRYB103K50 C 402 (B,153,56) CKSRYB103K50 C 403 (A,150,53) CEJQ470M6R3 C 404 (A,153,87) CEJQ101M10 C 405 (B,166,94) CKSRYB104K25

C 420 (B,112,68) CCSRCH470J50 C 451 (A,134,131) CEJQ330M10 C 601 (B,54,64) CKSRYB104K25 C 604 (B,97,64) CCSRCH200J50 C 605 (B,101,64) CCSRCH200J50

C 610 (A,94,71) CEJQ100M16 C 611 (B,97,68) CKSRYB224K16 C 725 (B,120,74) CKSRYB102K50 C 726 (B,148,84) CKSRYB102K50 C 801 (B,11,36) CKSRYB104K16

C 901 (A,46,121) 3300µF/16V CCH1494 C 911 (A,16,76) CEJQ470M10 C 912 (B,12,64) CKSRYB103K50 C 913 (A,25,86) 470µF/16V CCH1331 C 921 (A,14,115) CEJQ101M16

C 922 (A,18,107) CEJQ221M10 C 923 (B,18,110) CKSRYB103K50 C 924 (B,17,101) CKSRYB103K50 C 961 (B,50,66) CKSRYB473K50 C 963 (A,46,69) CEJQ100M16

C 982 (B,145,40) CKSRYB103K50 C 983 (A,147,35) CEJQ220M16

DEH-3750MP/XU/GS

B

C

D

E

F

7

8

45

1234

Circuit Symbol and No. Part No.

C 991 (B,20,50) CKSRYB473K50 C 992 (A,26,60) CEJQ101M16 C 994 (A,30,34) 470µF/16V CCH1331

A

Circuit Symbol and No. Part No.

R 1831 (B,33,23) RS1/16S472J R 1832 (B,35,23) RS1/16S472J R 1833 (B,12,21) RS1/16S2R2J R 1835 (B,20,20) RS1/16S121J

B

Unit Number: Unit Name:Keyboard Unit

MISCELLANEOUS

IC 1801 (B,29,96) IC PD6340A IC 1802 (A,15,27) IC TSOP4840SB1 D 1801 (B,19,40) Diode MA152WK D 1802 (B,24,40) Diode MA152WA

B

D 1803 (A,25,38) (GS,CN) LED CL-490SWFSD(12)

(A,25,38) (CS) LED CL-490S-WF-SD

D 1804 (A,25,128) (GS,CN) LED CL-490SWFSD(12)

(A,25,128) (CS) LED CL-490S-WF-SD D 1805 (A,13,22) LED SML-310PT D 1806 (A,26,9) LED SML-310PT

D 1807 (A,30,27) LED SML-310PT D 1808 (A,39,50) LED SML-310PT D 1809 (A,5,10) LED SML-310PT D 1810 (A,34,9) LED SML-310PT D 1811 (A,39,84) LED SML-310PT

C

D 1812 (A,39,73) LED SML-310PT D 1813 (A,39,61) LED SML-310PT D 1814 (A,39,96) LED SML-310PT D 1815 (A,39,107) LED SML-310PT D 1816 (A,39,119) LED SML-310PT

D 1817 (A,39,35) LED CL-190UB2-X D 1818 (A,39,131) LED CL-190UB2-X X 1801 S 1827 (A,23,19) Encoder(VOLUME) YSD5002 IL 1801 (B,23,147) Lamp 40mA,14V CEL1651

D

LCD1801 (A,16,45) (GS,CN) LCD YAW5027

RESISTORS

R 1801 (B,23,43) RS1/16S222J R 1802 (B,20,43) RS1/16S222J R 1803 (B,22,33) RS1/16S151J R 1804 (B,22,31) RS1/16S181J R 1805 (B,19,34) RS1/16S181J

R 1806 (B,29,142) RS1/16S181J R 1807 (B,26,142) RS1/16S181J

E

R 1808 (B,13,31) RS1/16S181J R 1809 (B,24,33) RS1/16S151J R 1810 (B,25,30) RS1/16S181J

R 1811 (B,21,35) RS1/16S181J R 1812 (B,29,140) RS1/16S181J R 1813 (B,26,140) RS1/16S181J R 1814 (B,15,31) RS1/16S181J R 1815 (B,25,33) RS1/16S151J

R 1816 (B,25,29) RS1/16S151J R 1817 (B,22,35) RS1/16S151J R 1818 (B,29,137) RS1/16S151J

F

R 1819 (B,26,137) RS1/16S151J R 1820 (B,17,31) RS1/16S0R0J

R 1821 (B,27,25) RS1/16S151J

46

(B,37,83) Ceramic Resonator 5.00MHz

(A,16,45) (CS) LCD YAW5015

1234

CSS1547

CAPACITORS

C 1801 (B,18,20) CKSRYB474K10 C 1802 (B,27,52) CKSRYF104Z25 C 1811 (A,25,32) CKSRYF104Z25 C 1812 (A,20,129) CKSRYF104Z25 C 1813 (A,39,33) CKSRYF104Z25

C 1814 (A,39,133) CKSRYF104Z25

C

Unit Number:CWX3096 Unit Name:CD Core Unit(S10.1)

MISCELLANEOUS

IC 201 (A,39,24) IC UPD63763GJ IC 203 (B,45,78) IC NJM2885DL1-33 IC 301 (A,49,88) IC BA5835FP IC 701 (A,48,51) IC PE5454A IC 703 (A,30,44) IC S-812C33AUA-C2N

Q 101 (A,20,22) Transistor 2SA1577 Q 701 (B,62,59) Transistor UN2111 L 203 (A,53,32) Inductor CTF1389 L 207 (A,53,31) Inductor CTF1389 L 209 (A,26,20) Inductor CTF1389

L 703 (A,64,49) Inductor CTF1389 X 201 X 701 S 901 (A,15,43) Switch(HOME) CSN1067 S 903 (B,53,100) Switch(DSCSNS) CSN1068

S 904 (B,35,108) Switch(12EJ) CSN1067 S 905 (B,48,109) Switch(8EJ) CSN1067

RESISTORS

R 101 (A,22,24) RS1/10SR2R4J R 102 (A,22,26) RS1/10SR2R4J R 103 (A,25,25) RS1/10SR2R7J R 201 (A,53,16) RS1/16SS102J R 202 (A,55,21) RS1/16SS333J

R 221 (B,31,18) RS1/16SS103J R 222 (B,26,18) RS1/16SS103J R 225 (A,27,8) RS1/16SS103J R 226 (A,27,7) RS1/16SS393J R 227 (B,33,10) RS1/16SS562J

R 228 (B,36,8) RS1/16SS122J R 229 (B,34,8) RS1/16SS472J R 232 (B,35,10) RS1/16SS122J R 241 (B,42,28) RS1/16SS333J R 243 (B,44,28) RS1/16SS333J

R 245 (A,39,38) RS1/16SS333J R 301 (A,48,78) RS1/16SS183J R 302 (A,42,78) RS1/16SS822J R 304 (A,50,78) RS1/16SS183J R 305 (A,42,77) RS1/16SS822J

R 307 (A,36,85) RS1/16SS183J

DEH-3750MP/XU/GS

(A,51,35) Ceramic Resonator 16.934MHz (A,59,53) Ceramic Resonator 4.00MHz

CSS1603 CSS1652

5678

Circuit Symbol and No. Part No.

R 308 (A,32,83) RS1/16SS183J R 309 (A,38,89) RS1/16SS183J R 310 (A,35,88) RS1/16SS183J R 601 (B,43,59) RS1/16S101J

R 602 (B,41,62) RS1/16S101J R 606 (B,44,67) RS1/16S0R0J R 607 (B,43,56) RS1/16SS0R0J R 608 (B,36,67) RS1/16SS0R0J R 705 (B,50,59) RS1/16SS221J

R 706 (B,57,61) RS1/16SS221J R 707 (A,62,47) RS1/16SS473J R 708 (B,50,57) RS1/16SS221J R 710 (A,28,77) RS1/16SS102J R 711 (B,44,53) RS1/16SS221J

R 714 (B,51,53) RS1/16SS473J R 716 (A,63,56) RS1/16SS472J R 719 (B,49,45) RS1/16SS221J R 720 (B,46,52) RS1/16SS471J R 724 (A,62,42) RS1/16S473J

R 725 (B,57,43) RS1/16SS222J R 726 (A,52,41) RS1/16SS103J R 727 (B,50,54) RS1/16SS473J R 729 (A,57,40) RS1/16SS223J R 730 (A,65,41) RS1/16SS473J

R 731 (A,53,41) RS1/16SS104J R 737 (A,41,42) RS1/16SS104J R 740 (A,35,46) RS1/16SS473J R 742 (A,50,41) RS1/16SS104J R 746 (B,60,56) RS1/16SS104J

R 750 (A,39,59) RS1/16SS473J R 754 (B,48,60) RS1/16SS102J R 755 (A,43,61) RS1/16SS102J R 765 (B,51,40) RAB4CQ221J R 769 (B,48,40) RAB4CQ221J

R 773 (B,39,37) RAB4CQ221J R 777 (B,48,51) RS1/16SS221J R 778 (B,48,52) RS1/16SS221J R 779 (B,45,54) RS1/16SS221J R 901 (B,52,65) RAB4CQ221J

R 905 (B,54,60) RS1/16SS221J R 906 (B,56,68) RS1/16SS221J R 908 (B,45,69) RS1/16SS0R0J R 910 (B,44,69) RS1/16SS0R0J R 911 (B,40,73) RS1/16SS102J

CAPACITORS

C 103 (B,14,8) 100µF/16V CCH1504 C 105 (A,19,15) CKSSYB104K10 C 108 (B,39,16) CKSSYB104K10 C 110 (A,18,6) CKSSYB104K10 C 201 (A,51,14) CKSSYB102K50

Circuit Symbol and No. Part No.

C 218 (A,25,7) CKSSYB473K10

C 219 (A,34,7) CKSSYB104K10 C 220 (A,33,11) CKSSYB182K50 C 221 (B,35,6) CKSSYB104K10 C 222 (B,35,8) CCSSCH560J50 C 223 (B,33,8) CCSSCH4R0C50

C 224 (B,40,16) CKSSYB104K10 C 225 (B,45,14) CKSSYB103K16 C 226 (B,43,12) CCSSCH680J50 C 227 (A,45,10) CCSSCH470J50 C 228 (A,49,9) CKSSYB103K16

C 234 (B,36,81) CEVW221M4 C 237 (B,38,29) CKSSYB104K10 C 239 (B,34,10) CCSSCH220J50 C 242 (B,58,32) CKSSYB104K10 C 243 (B,39,76) CKSSYB104K10

C 244 (B,49,70) CKSSYB104K10 C 246 (A,23,19) CKSSYB104K10 C 251 (B,28,31) CKSRYB102K50 C 260 (A,54,25) CKSSYB104K10 C 301 (A,43,78) CKSSYB221K50

C 302 (A,50,79) CKSSYB221K50 C 303 (A,37,85) CKSSYB472K25 C 304 (A,39,89) CKSSYB103K16 C 305 (B,34,92) CEVW101M16 C 307 (B,56,90) CKSSYB104K10

C 601 (B,46,60) CCSRCH102J50 C 602 (B,41,65) CCSRCH102J50 C 701 (A,64,46) CKSSYB104K10 C 703 (B,50,61) CKSSYB103K16 C 706 (B,50,62) CKSSYB104K10

C 707 (A,36,45) CKSSYB104K10 C 712 (A,22,42) CKSRYB224K16 C 714 (B,60,45) CKSSYB104K10 C 716 (A,61,40) CKSSYB103K16 C 722 (B,52,48) CKSQYB475K6R3

C 723 (A,26,41) CKSRYB105K10 C 903 (B,56,70) CKSSYB471K50 C 906 (A,40,77) CKSRYB224K16 C 907 (A,47,76) CKSSYB103K16 C 910 (B,60,71) CKSQYB225K10

Miscellaneous Parts List

Pickup Unit(P10)(Service) CXX1647 M 1 Motor Unit(SPINDLE) CXC4440 M2

Motor Unit(LOADING/CARRIAGE)

CXB8933

A

B

C

D

E

C 202 (B,50,17) CKSSYB104K10 C 203 (A,55,23) CKSSYB104K10 C 204 (B,28,22) CEVW220M6R3 C 205 (A,53,25) CKSSYB104K10 C 208 (B,44,25) CKSSYB104K10

C 209 (A,54,29) CKSSYB104K10 C 212 (A,45,37) CKSRYB105K10 C 216 (A,25,8) CKSSYB332K50 C 217 (A,28,12) CKSSYB104K10

56

DEH-3750MP/XU/GS

F

7

8

47

1234

6. ADJUSTMENT

6.1 CD ADJUSTMENT

A

1) Cautions on adjustments

• In this product the single voltage (3.3V) is used for the regulator. The reference voltage is the REFO1 (1.65V) instead of the GND. If you should mistakenly short the REFO1 with the GND during adjustment, accurate voltage will not be obtained, and the servo’s misoperation will apply excessive shock to the pickup. To avoid such problems: a. Do not mix up the REFO1 with the GND when connecting the (-) probe of measuring instruments. Especially on an oscilloscope, avoid connecting the (-)

B

probe for CH1 to the GND. b. In many cases, measuring instruments have the same potential as that for the (-) probe. Be sure to set the measuring instruments to the floating state. c. If you have mistakenly connected the REFO1 to the GND, turn off the regulator or the power immediately.

• Before mounting and removing filters or leads for adjustment, be sure to turn off the regulator.

• For stable circuit operation, keep the mechanism

C

operating for about one minute or more after the regulator is turned on.

• In the test mode, any software protections will not work. Avoid applying any mechanical or electrical shock to the mechanism during adjustment.

2) Test mode This mode is used to adjust the CD mechanism module.

• To enter the test mode. While pressing the 4 and 6 keys at the same time, reset.

• To exit from the test mode. Turn off the ACC and back up.

Notes: a. During ejection, do not press any other keys than the EJECT key until the loaded disc is ejected. b. If you have pressed the (→) key or (←) key during focus search, turn off the power immediately to protect the actuator from damage caused by the lens stuck. c. For the TR jump modes except 100TR, the track jump operation will continue even if the key is released. d. For the CRG move and 100TR jump modes, the tracking loop will be closed at the same time when the key is released. e. When the power is turned off and on, the jump mode is reset to the single TR (91), the RF amp gain is set to 0dB, and the auto-adjustment values are reset to the default settings.

• The RFI and RFO signals with a wide frequency range are easy to oscillate. When observing the signals, insert a resistor of 1k ohms in series.

• The load and eject operation is not guarantied with the

D

mechanism upside down. If the mechanism is blocked due to mistaken eject operation, reset the product or turn off and on the ACC to restore it.

E

F

48

1234

DEH-3750MP/XU/GS

5678

- Flow Chart

[KEY]

Contents

Display

[BAND]

Power Off

TRK MIN SEC

[BAND]

Power Off

TRK MIN SEC

[BAND]

Power Off

TRK MIN SEC

[4]+[6]+Reset or [4]+[6]+BU+ACC

Test Mode In

[CD]or[SOURCE]

Source On

SEC

TRK MIN

[BAND]

Power On

(T.Offset is adjusted)

TRK

MIN

SEC

00

[3]

Focus Close

S curve check

TRK

MIN

SEC

91

[1]

T.Close and AGC

Applicable servomechanism

TRK

MIN

SEC

?tr

?min

?sec

[1]

F,T,RF AGC

F.Bias display switching

TRK

??

*7 *5 *4*4

MIN

SEC

??

[3]

Power On

(T.Offset is not adjusted)

TRK

MIN

SEC

99

[2]

RF AMP

Gain switching

TRKGGMINGGSEC

*1 *9

GG

[6] [1]

*2

Focus Mode

switching

TRK0xMIN0xSEC

[6]

T.Close

Applicable servomechanism

TRK MIN SEC

?tr ?min ?sec

[3]

F,T AGC / F.Bias

RF AGC

TRK MIN SEC

?tr ?min ?sec ?tr ?min ?sec ?tr ?min ?sec ?tr ?min ?sec

Tracking Servo

TRK

0x

TRK

or

RF AGC coefficient display

TRK

CRG/TR Jump

value switching

TRK MIN SEC

Close

MIN

00

MIN

99

[3]

RF AGC /

MIN

??

[6]

SEC

00

SEC

99

SEC

??

[4]

SPINDLE

Speed switching

TRKSPMINSPSEC

SP

[→][←]

CRG+

TRK

MIN

SEC

00

99

00

MIN

SEC

99

TRK

or

[→][←]

CRG+

TRK8xMIN8xSEC

TRK9xMIN9xSEC

or

8x

[→] [←]

CRG/TR Jump +

TRK MIN SEC

*8 *8

99

CRG-

TRK

MIN

00

TRK

or

99

CRG-

TRK8xMIN8xSEC

TRK9xMIN9xSEC

9x

or

CRG/TR Jump -

TRK MIN SEC

A

B

[2]

Automatic adjustment

switching

SEC

00

MIN

99

TRK

00

SEC

??

99

*3

MIN

SEC

??

[2]

T.Balance adjustment /

T.BAL coefficient display

TRK

MIN

8x

9x

SEC

??

C

[2]

Tracking Open

*6

TRK8xMIN8xSEC

TRK9xMIN9xSEC

or

8x

9x

[BAND]

Power Off

TRK MIN SEC

*1) TYP → -6dB → -12dB

TRK MIN SEC TRK 06 MIN 06 SEC 06 TRK 12 MIN 12 SEC 12

*2) Focus Close → S.Curve check setting → F EQ measurement setting

TRK 00 MIN 00 SEC 00 TRK 01 MIN 01 SEC 01 TRK 02 MIN 02 SEC 02 (TRK 99 MIN 99 SEC 99)

*3) F.Offset Display → T.Offset Display → Switch to the order of the original display

*4) 1TR / 32TR / 100TR

*5) Single TR → 32TR → 100TR → CRG Move 9x(8x) : 91(81) 92(82) 93(83) 94(84)

*6) Only at the time of CRG move, 100TR jump

*7) TRK/MIN/SEC → F.AGC → T.AGC → F Bias → RF AGC

*8) CRG motor voltage = 2[V]

[2]

Tracking Open

TRK8xMIN8xSEC

TRK9xMIN9xSEC

or

[Key]

[BAND]

Power On / Off

CRG + / TR Jump +

[→]

(Direction of the external surface) CRG - / TR Jump -

[←]

(Direction of the internal surface) U.CLS and AGC and Applicable servomechanism /

[1]

AGC, AGC display setting RF Gain switching / Offset adjustment display /

[2]

T.Balance adjustment / T.Open Close, S.Curve / Rough Servo and RF AGC /

[3]

F, T, RF AGC SPDL 1X / 2X switching

[4]

As for the double speed (2x), audio output cannot be supported.

Error Rate measurement

[5]

F.Mode switching / Tracking Close /

[6]

CRG • TR Jump switching

Operation Test Mode

8x

9x

1st - ON : ERR count Beginning (30Sec) 2nd - ON : BER display data [%]

D

E

*9) Applicability : A, B, C, D, E, F TYP(1X) → 2X → 1X

TRK MIN SEC TRK 22 MIN 22 SEC 22 TRK 11 MIN 11 SEC 11

As for the double speed (2x), audio output cannot be supported

56

Applicability : G TYP(2X) → 1X → 2X

TRK MIN SEC TRK 11 MIN 11 SEC 11 TRK 22 MIN 22 SEC 22

DEH-3750MP/XU/GS

7

F

8

49

1234

6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

A

• Note :

The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module. Changing the PU unit is thus best considered as a last resort. However, if the PU unit must be changed, the grating should be checked using the procedure below.

• Purpose :

To check that the grating is within an acceptable range when the PU unit is changed.

B

• Symptoms of Mal-adjustment :

If the grating is off by a large amount symptoms such as being unable to close tracking, being unable to perform track search operations, or taking a long time for track searching.

• Method :

• Measuring Equipment

• Measuring Points

• Oscilloscope, Two L.P.F.

• E, F, REFO1

• Disc • TCD-782

• Mode • TEST MODE

CD CORE UNIT(S10.1)

C

L.P.F.

E

100kΩ

VREF

F

VREF

D

F

E

REFO1

390pF

100kΩ

390pF

L.P.F.

Xch Ych

Oscilloscope

• Checking Procedure

1. In test mode, load the disc and switch the 3V regulator on.

2. Using the → and ← buttons, move the PU unit to the innermost track.

3. Press key 3 to close focus, the display should read "91". Press key 2 to implement the tracking balance adjustment the display should now read "81". Press key 3. The display will change, returning to "81" on the fourth press.

E

4. As shown in the diagram above, monitor the LPF outputs using the oscilloscope and check that the phase difference is within 75° . Refer to the photographs supplied to determine the phase angle.

5. If the phase difference is determined to be greater than 75° try changing the PU unit to see if there is any improvement. If, after trying this a number of times, the grating angle does not become less than 75° then the mechanism should be judged to be at fault.

• Note

Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the average angle.

• Hint

Reloading the disc changes the clamp position and may decrease the "wobble".

F

50

1234

DEH-3750MP/XU/GS

5678

Grating waveform

0°

45°

Ech → Xch 20mV/div, AC Fch → Ych 20mV/div, AC

A

30°

B

60°

C

75°

D

90°

E

F

56

DEH-3750MP/XU/GS

7

8

51

1234

6.3 ERROR MODE

- Error Messages

A

Error is displayed with number for Error cause when CD is inoperative or stops with Error during operation. The purpose is to reduce nonsense calls from users as well as to assist all related analysis and repair for defects at service station.

(1) Basic Display Method

1) When CSMOD (CD mode area for system) is SERRORM, Error code will be written in DMIN (minutes area for display), DSEC (seconds area for display). The same data shall be written in DMIN and DSEC. DTNO is blank as usual.

2) Display Example of Head Unit The following is about LCD display ability. xx is Error number.

B

8 digits 6 digits 4 digits

ERROR–xx ERR–xx

E–xx OR Err–xx

Error Code List

(2)

No. Classification Contents Details • Cause 10 Electricity Carriage Home NG CRG can’t move to the inner.

C

CRG can’t move from the inner.

→ HOME SW failure, CRG movement failure.

11 Electricity Focus Search NG Focus can’t be caught.

→ Back of Disc / Severe dirt and vibration.

12 Electricity Spindle Lock NG Not spindle, lock. Wrong subcode (can’t read).

Subcode NG RF-amp NG

→ Defective Spindle. Scratch and dirt on Disc. Intense vibration.

The appropriate gain of the RF amp cannot be obtained.

→ Defective spindle.

Scratched or dirty disc. Severe vibration. Abnormal CD signals.

→ → Blanc CD-R disc. Disc inserted upside down.

D

17 Electricity Setup NG AGC protection doesn’t work, out of Focus soon.

→ Scratch on Disc/Severe dirt and vibration.

22 Disc Impossible to play There is no playable MP3 or WMA file present in a disc.

→ No MP3 or WMA file exists in a CD-ROM disc inserted.

23 Disc File Format NG Contents are stored in an incompatible file format.

→ The contents in a CD-ROM disc inserted are recorded in a file format other than ISO9660 Level-1 and 2.

30 Electricity Search Time Out Can’t reach the target address.

→ Defective CRG/tracking, or scratch on Disc.

E

44 Disc Impossible to play There is no playable TRK No. present in a disc.

→ All TRK Nos. In a disc inserted are specified as a track which should be skipped, in the track skip information.

50 Mecha Disc Load / Eject NG Disc loading/ejection cannot be complete.

→ Foreign objects entered into the mechanism. Disc caught in between during loading/ejection.

A0 System Power NG Power supply (VD) isn’t connected to the ground.

→ Defective SW transistor. Abnormal power (failed connector)

Note : Error doesn’t display in mechanism only. (CD off causes mechanism off) If TOC can’t be read, error wouldn’t occur, but mechanism still continues its operation. The upper digits of error code is mainly classified by 3 kinds as follows:

F

1x: Setup related error, 3x: Search related error, Ax: Other errors.

52

1234

DEH-3750MP/XU/GS

5678

6.4 SYSTEM MICROCOMPUTER TEST PROGRAM

- PCL Output

In the normal operation mode (with the detachable panel installed, the ACC switched ON, the standby mode cancelled), shift the TESTIN (Pin 15) terminal to H. The clock signal is output from the PCL terminal (Pin 14). The frequency of the clock signal is 786.432kHz that is one 16th of the fundamental frequency. The clock signal should be 786.432kHz ± 31.5Hz. If the clock signal is out of the range, the X'tal (X601) should be replaced with new one.

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

53

1234

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 DISASSEMBLY

A

-

Removing the Case (not shown)

1. Remove the Case.

- Removing the CD Mechanism Module (Fig.1)

1

Remove the four screws.

B

C

D

Disconnect the connector and then remove the CD Mechanism Module.

- Removing the Grille Assy (Fig.1)

2

Release the two latchs and then remove the Grille Assy.

- Removing the Tuner Amp Unit (Fig.2)

1

Remove the screw.

Straighten the tabs at three locations

2

indicated.

2

CD Mechanism Module

1

Grille Assy

3

1

3

2

Fig.1

3

Remove the three screws and then remove the Tuner Amp Unit.

1

E

2

Tuner Amp Unit

F

54

1234

DEH-3750MP/XU/GS

2

Fig.2

5678

- How to hold the Mechanism Unit

1. Hold the top and bottom frame.

2. Do not squeeze top frame's front portion too tight, because it is fragile.

- Removing the Upper and Lower Frames

1. With a disc clamped, remove the four springs (A), the two springs (B), the two springs (C), and the four screws.

2. To remove the upper frame, open it on the fulcrum A.

3. While lifting the carriage mechanism, remove the three dampers.

4. With the frames removed, insert the connectors coming from the main unit and eject the disc. Caution: Before installing the carriage mechanism in the frames, be sure to apply some alcohol to the dampers and set the mechanism to the clamp mode.

A

B

Do not squeeze.

A

Upper Frame

A

C

A

C

A

Carriage Mechanism

Lower Frame

B

Damper

A

Damper

B

Damper

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

55

1234

- Removing the Pickup Unit

1. Apply shorting solder to the Pickup flexible cable. Disconnect the cable.

A

2. Set the mechanism to the clamp mode.

3. Remove the lead wires from the inner holder.

4. Remove the washer, styling holder, change arm, and pickup lock arm.

5. While releasing from the hook of the inner holder, lift the end of the feed screw. Caution: In assembling, move the planet gear to the load/eject position before setting the feed screw in the inner holder.

B

Shorting

Solder

C

Washer

Pickup Lock Arm

Styling Holder

Change Arm

Feed Screw

D

E

Inner Holder

Planet Gear

F

56

1234

DEH-3750MP/XU/GS

5678

7.1.2 CONNECTOR FUNCTION DESCRIPTION

A

ANTENNA JACK

REAR OUTPUT

Pin No.

1 2 3 4 5 6 7 8

B.UP GND ACC NC NC B.REM NC NC

16 1514131211109876543

Pin No.

10 11 12 13 14 15 16

2 1

10A

B

9

RL-

C

FLRL+ FL+ RRFRRR+ FR+

D

56

DEH-3750MP/XU/GS

E

F

7

8

57

1234

7.2 PARTS

7.2.1 IC

- Pin Functions(PE5460A)

A

B

C

D

E

F

Pin No.

1

2, 3

4

5, 6

7 8

9 10 11 12 13 14 15 16 17 18

19, 20

21 22 23 24 25 26 27 28 29 30 31 32 33 34

35, 36

37 38 39 40 41 42 43

44, 45

46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62

Pin Name MODEL1 NC AVSS NC AVREF1 KYDT DPDT ADPW TUNPDI TUNPDO TUNPCK PCL TESTIN BSI BDATA BSCK NC

swvdd

ILMPW NC XRST

brst

XSTB

brxen

CONT LOEJ CLCONT NC DALMON VSS TELIN ROT0, 1 ROMDATA ROMCLK ROMCS RECEIVE

bsrq

NC SYSPW NC STRKEY2

isens

MUTE ANTPW NC VST VDT VCK NC TUNPCE2 TUNPCE RDT RDSLK RDS57K RESET LDET RCK

I/O

O O

O O O

O

I/O

O O

O O O

I/O

O O O

O

O O O

O

O O

O O O

O O

Function and Operation Model select input

I

Not used GND Not used VDD Display microcomputer data input

I

Display microcomputer communication data output A/D converter power supply output PLL data input

I

PLL data output PLL clock output Clock adjustment output Test program input

I

P-BUS serial data input

I

P-BUS serial data output P-BUS serial clock input/output Not used Display microcomputer chip select output Illumination power output Not used CD LSI reset control output P-PUS reset signal output CD LSI strobe output P-BUS reception enable signal input/output Driver output Load/eject output Driver control output Not used Output for dark current reduction circuit GND TEL mute input

I

Rotary volume input 0, 1

I

ROM collection data output ROM collection clock output ROM collection chip select output RDS decoder receiving output (Not used) P-BUS serial pole request input

I

Not used System power output Not used Wired remote control input

I

Illumination input

I

System mute output Auto antenna control output Not used E.VOL strobe output E.VOL data output E.VOL clock output Not used PLL chip enable output 2 PLL chip enable output RDS LK input (Not used) RDS clock input (Not used) RDS 57K input (Not used) Reset PLL lock detection input

I

RDS clock input

I

58

1234

DEH-3750MP/XU/GS

5678

Pin No.

63 64 65 66 67 68

69, 70

71 72 73 74 75 76 77 78 79 80

* PE5460A

80

1

Pin Name

asens bsens dsens source

VSS VDD X2, 1 IC(VPP) NC VSS AVDD AVREF1 SL TEMP VDSENS DISCSENS STRKEY1

61

I/O

60

Function and Operation ACC sense input

I

Back up sense input

I

Grille detach sense input

I

Source sense input

I

GND VDD Crystal oscillator connection pin GND Not used VSS VDD VDD Signal level input

I

Temperature detection input

I

VD power supply short circuit input

I

DISC loading detection input

I

Wired remote control input

I

IC's marked by * are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction.

A

B

C

20

21

BA33BC0FP

1

40

-

Vref

+

OCP TSD

2

NCOUT

41

D

E

3

VCC

56

DEH-3750MP/XU/GS

F

7

8

59

1234

- Pin Functions(PD6340A)

Pin No. Pin Name I/O Function and Operation

A

B

C

1-5 SEG4-0 O LCD segment output 6-9 COM3-0 O LCD common output

10 VLCD LCD drive power supply

11-14 KST3-0 O Key strobe output 15,16 KDT0,1 I Key data input (analogue input)

17 REW I Remote control reception input

18 DPDT I Display data input

19 NC Not used

20 KYDT O Key data output

21 MODA GND

22 X0 Crystal oscillator connection pin

23 X1 Crystal oscillator connection pin

24 VSS GND

25,26 KDT2,3 I Key data input

27 NC Not used

28 KST4 O Key strobe output

29-32 NC Not used 33-55 SEG35-13 O LCD segment output

56 VDD Power supply

57-64 SEG12-5 O LCD segment output

* PD6340A

1

64

16

17

49

D

48

32

33

NJM2388F84

N.C.

54

E

Vref

123

VOUT

F

VDD

N.C.

GND

60

1234

DEH-3750MP/XU/GS

5678

- Pin Functions(UPD63763GJ)

Pin No. Pin Name I/O Function and Operation 1 D.VDD Power supply for digital circuits 2 D1.GND GND for 1.6V digital circuits 3 reset I Input of reset 4-8 AB12-8 I Address bus 12-8 from the microcomputer 9-16 AD7-0 I/O Address/data bus 7-0 to the microcomputer 17 cs I Chip selection 18 ASTB I Address strobe 19 read I Control signals(read) 20 write I Control signals(write) 21 wait O Control signals(wait) 22 INTQ O Interruption signals to the external microcomputer 23, 24 IFMODE0, 1 I Switching the microcomputer I/F 0, 1 25 D1.VDD Power supply for 1.6V digital circuits 26 DA.VDD Power supply for DAC 27 ROUT O Output of audio for the right channel 28 DA.GND GND for DAC 29 REGC Connected to the capacitor for band gap 30 DA.GND GND for DAC 31 LOUT O Output of audio for the left channel 32 DA.VDD Power supply for DAC 33 X.VDD Power supply for the crystal oscillator 34 XTAL I Connected to the crystal oscillator(16.9344MHz) 35 xtal O Connected to the crystal oscillator(16.9344MHz) 36 X.GND Ground for the crystal oscillator 37 VDDREG15 Control of 1.6V regulator 38 PWMSW0 I Setup 0 for PWM output(SD, MD) 39-41 TEST3-1 I Connected to GND 42 PWMSW1 I Setup 1 for PWM output(FD, TD) 43 TESTEN I Connected to GND 44 D1.GND GND for 1.6V digital circuits 45 DIN I Input of audio data 46 DOUT O Output of audio data 47 SCKIN I Clock input for audio data 48 SCKO O Clock output for audio data 49 LRCKIN I Input of LRCK for audio data 50 LRCK O Output LRCK for audio data 51 xtalen I Permission to oscillate 16.9344MHz 52 D1.VDD Power supply for 1.6V digital circuits 53 RFCK/HOLD O Output of RFCK/HOLD signal 54 WFCK/MIRR O Output of WFCK/MIRR signal 55 PLCK/RFOK O Output of PLCK/Output of RFOK 56 LOCK/RFOK O Output of LRCK/Output of RFOK 57 C1D1/C8M O Information on error correction/C8M : 8MHz 58 C1D2/C16M O Information on error correction/C16M : 16MHz 59 C2D1/RMUTE O Information on error correction/Mute for Rch 60 C2D2/LMUTE O Information on error correction/Mute for Lch 61 C2D3/SHOCK O Information on error correction/Detection of vibration 62 D1.GND GND for 1.6V digital circuits 63 C33M O Output of 33.8688MHz(CLK for SDRAM) 64 (rcs) O DRAM cs 65 RA11 O Output of DRAM address 11 66 (CKE) O Output of DRAM CKE 67 ras O Output of DRAM ras 68 cas)(LDQM) O Output of DRAM lower cas(LDQM) 69 cas!(UDQM) O Output of DRAM upper cas(UDQM) 70 we O Output of DRAM we 71 oe(cas) O Output of DRAM oe(cas) 72 D.GND Ground for digital circuits 73-88 RDB0-15 I/O Input/output of DRAM data0-15 89-99 RA0-10 O Output of DRAM address0-10

A

B

C

D

E

F

56

DEH-3750MP/XU/GS

7

8

61

1234

Pin No. Pin Name I/O Function and Operation 100 D.VDD Power supply for digital circuits 101 FD+ O Output of focus drive PWM +

A

102 FD- O Output of focus drive PWM 103 TD+ O Output of tracking drive PWM + 104 TD- O Output of tracking drive PWM 105 SD+ O Output of thread drive PWM + 106 SD- O Output of thread drive PWM 107 MD+ O Output of spindle drive PWM + 108 MD- O Output of spindle drive PWM 109 REFOUTSV O REFOUT for servo 110 AD.VDD Power supply for ADC 111 EFM O Output of EFM signals 112 ASY I Input of asymmetry

B

113 ATEST O Analog tests 114 RFI I Input of RF 115 AD.GND Ground for the analog system 116 AGCO O Output of RF 117 C3T O Connection to the capacitor for detecting 3T 118 AGCI I Input of AGC 119 RFO O Output of RF(AGC) 120, 121 EQ2, 1 I Equalizer 2, 1 122 RF2- I Reversal input of RF2 123 RF- I Reversal input of RF 124 A.GND Ground for the analog system 125 A I Input of A

C

126 C I Input of C 127 B I Input of B 128 D I Input of D 129 F I Input of F 130 E I Input of E 131 VREFIN I Input of reference voltage 132 A.VDD Power supply for the analog system 133 REFOUT O Output of reference voltage 134 REFC I Connected to the capacitor for output of REFOUT 135 FE- I Reversal input of FE 136 FEO O Output of FE 137 ADIN I Input of FE, TE A/D converter

D

138 TE- I Reversal input of TE 139 TEO O Output of TE 140 TE2 O TE2 141 TEC I TEC 142 LD O Output of LD 143 PD I Input of PD 144 D.GND Ground for digital circuits

* UPD63763GJ

E

108

109

144

F

62

1

1234

73

72

37

36

DEH-3750MP/XU/GS

5678

- Pin Functions(PE5454A)

Pin No. Pin Name I/O Format Function and Operation 1 AVREF A power supply Positive power supply(5V) 2 AVSS A power supply GND 3 RFOK O C Output of state of RFOK 4 NC Not used 5 EVDD E power supply Positive power supply 6, 7 NC Not used 8 IC/FLMD0 IC : VSS direct connection/FLMOD0 : Pull-down 9 VDD Positive power supply(5V) 10 REGC Connected to the capacity stabilizing output of the regulator 11 VSS GND 12 X1 I Oscillator connection for mainclock 13 X2 Oscillator connection for mainclock 14 reset I System reset input 15 XT1 I Connected to the oscillator for subclock (connected to VSS via the resistor) 16 XT2 Connected to the oscillator for subclock(Open) 17 NC Connected to EVDD or EVSS via the resistor 18 NC Not used 19 xint I C CD LSI interruption signal input 20 NC Connected to VSS via the resistor 21 brst I P-Bus reset input 22 BSI I P-Bus serial data input 23 BSO O C P-Bus serial data output 24 bsck I/O /C P-Bus serial clock input/output 25 FTXD O C For flash rewriting output(transmitted signal) 26 FRXD I For flash rewriting input(received signal) 27 BRXEN I/O /C It is possible to receive P-Bus input/output 28 bsrq I/O /C P-Bus service request demand input/output 29 NC Not used 30 DSCSNS I Disc state sense input 31 8EJ(S905) I Input of detection of 8 cm disc ejection 32 12EJ(S904) I Input of detection of 12 cm disc ejection 33 EVSS E power supply GND 34 EVDD E power supply Positive power supply 35, 36 SRAMLEVEL0, 1 O C SRAM level meter output 37 EMPH O C Emphasis information output 38 emph O C Emphasis information output 39-42 NC Not used 43 adena O C A/D reference voltage supply control output 44 LRCKOK O C (DOUT mute output) 45 SRAMLEVEL2 O C SRAM level meter output 46 CD3VON O C CD +3.3V power supply control output 47 CONT O C Servo driver power supply control output 48 xrst O C CD LSI reset control output 49 VDCONT O C VD power supply control output 50 ROMDATA I/O /C E2PROM data input/output 51 ROMCS O C E2PROM chip selection output 52 ROMCK O C E2PROM clock output 53 LOEJ O C The direction change output of LOAD/EJECT 54 CLCONT O C Driver input change output 55 CDMUTE O C CD mute control output 56-58 NC Not used 59 xcs O C CD LSI chip selection output 60 NC Not used 61 xwait I CD LSI write control signal input 62 CLKOUT O C Internal system clock output(Open) 63 LOCK I Spindle lock input 64 NC Not used 65 xwrite O CD LSI write control signal output 66 NC Not used

A

B

C

D

E

F

56

DEH-3750MP/XU/GS

7

8

63

1234

Pin No. Pin Name I/O Format Function and Operation 67 xread O CD LSI read control signal output 68 XASTB O CD LSI address strobe output

A

69 BVSS B power supply GND 70 BVDD B power supply Positive power supply 71-83 AD0-12 I/O /C Address/data Bus 0-12 84-86 NC Not used 87 FMODE I For flash rewriting Connected to VSS via the resistor 88 FLRQ O C For flash rewriting 89-93 NC Not used 94 csens I Flap closing sense input 95 TYPE_A/D I CD-DA analog/digital output change setup 96 testin I Chip check test program starting input 97 HOME I Home SW sense input

B

98 TEMP I Temperature information sense input 99 VDSENS I VD power supply short sense input 100 NC Not used

* PE5454A

Format Meaning

75

76

51

C CMOS

50

C

100

1

D

26

25

NJM2885DL1-33

Thermal

Protection

E

Bandgap

Reference

+

-

1

IN

F

64

1234

2

GND

3

OUT

DEH-3750MP/XU/GS

5678

- FM/AM Tuner Unit

76 13 5 1098 11 14 18192021

WC

CE2

ROM_VDD

DI

SL

CK

NC

CE1

DO

NCNCNC

NC

A

CF51

3.3V

IC 5

←

5V 3.3V

IC 4

3.3V 2.5V

Rch

IC 2

2.5V

DET, FM MPX

←

2.5V

24

Lch

23

1

3

AM ANT

FM ANT

ATT

ANT adj

FMRF

RF adj

IC 3 EEPROM

5.0V

OSC

LPF

IC 1

3.3V

MIXER, IF AMP

T51

CF52

RFGND

OSCGND

DGND

212 1522 16 4 17

AUDIOGNDNCVCC

VDD_3.3

No. Symbol I/O Explain

1 AMANT I AM antenna input AM antenna input high impedance AMANT pin is connected with

an all antenna by way of 4.7µH. (LAU type inductor) A series circuit including an inductor and a resistor is connected with RF ground for the countermeasure against the hum of power transmission line.

2 RFGND RF ground Ground of antenna block 3 FMANT I FM antenna input Input of FM antenna 75Ω Surge absorber(DSP-201M-S00B) is necessary. 4 VCC power supply The power supply for analog block. D.C 8.4V ± 0.3V 5 SL O signal level Output of FM/AM signals level 6 CE2 I chip enable-2 Chip enable for EEPROM ”Low” active 7 WC I write control You can write EEPROM, when EEPROM write control is “Low”.

Ordinary non connection 8 CE1 I chip enable-1 Chip enable for AF•RF ”High” active 9 CK I clock Clock

10 DI I data in Data input 11 NC non connection Not used 12 OSCGND osc ground Ground of oscillator block 13 ROM_VDD power supply Power supply for EEPROM pin 13 is connected with a power supply of

micro computer.

14 DO O data out Data output 15 DGND digital ground Ground of digital block 16 NC non connection Not used 17 VDD_3.3 power supply The power supply for digital block. 3.3V ± 0.2V 18 NC non connection Not used 19 NC non connection Not used 20 NC non connection Not used 21 NC non connection Not used 22 AUDIOGND audio ground Ground of audio block 23 L ch O L channel output FM stereo “L-ch” signal output or AM audio output

24 R ch O R channel output FM stereo “R-ch” signal output or AM audio output

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

65

7.2.2 DISPLAY

- LCD(YAW5027)(DEH-3750MP/XU/GS, DEH-3750MP/XU/CN)

- LCD(YAW5015)(DEH-3770MP/XU/CS)

A

B

1234

C

D

E

SEGMENT

F

66

1234

DEH-3750MP/XU/GS

COMMON

5678

7.3 OPERATIONAL FLOW CHART

Power ON

AVREF1, VDD, AVDD=5V Pin 7, 68, 74, 75

bsens

Pin 64

bsens=L

A

B

asens

Pin 63

asens=L

swvdd←L

Pin 21

Source keys operative

Source ON

SYSPW←H Pin 43

C

Starts communication with Grille microcomputer.

300ms

D

In case of the above signal, the communication with Grille microcomputer may fail. If the time interval is not 300msec, the oscillator may be defective.

E

Completes power-on operation.(After that, proceed to each source operation.)

56

DEH-3750MP/XU/GS

7

F

8

67

1234

7.4 CLEANING

A

Before shipping out the product, be sure to clean the following portions by using the prescribed cleaning tools:

Portions to be cleaned Cleaning tools CD pickup lenses Cleaning liquid : GEM1004

B

Cleaning paper : GED-008

C

D

E

F

68

1234

DEH-3750MP/XU/GS

5678

8. OPERATIONS

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

69

1234

A

B

C

D

E

F

70

1234

DEH-3750MP/XU/GS

5678

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

71

1234

A

B

C

D

E

F

72

1234

DEH-3750MP/XU/GS

5678

A

B

About the fixing screws for the front panel

If you do not operate the Detaching and Replacing the Front Panel Function, use the supplied fixing screws and fix the front panel to this unit.

Fixing screw (CXX1066)

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

73

1234

-

A

separately)

Power amp

(sold

.

Right

+

Gray

White

Front speaker

≠

Perform these connections when using

the optional amplifier

+

B

Connecting cords with RCA

pin plugs (sold separately)

System remote control

≠

+

Violet

Gray/black

Green

White/black

Rear speaker

≠

Violet/black

Green/black

C

+

Left

≠

rRea speaker

With a 2 speaker system, do not

connect anything to the speaker leads

that are not connected to speakers.

Fuse

Blue/white

Tosystem control terminal of the power amp or

Auto-antenna relay control terminal (max. 300 mA

12 V DC).

+

Rear speaker Rear speaker

+

≠

Front speaker

D

This Product

Antenna jack

Rear output

E

Yellow

Toterminal always supplied with

power regardless of ignition

switch position.

Red

Toelectric terminal controlled by

ignition switch (12 V DC)

ON/OFF.

Black (ground)

Tovehicle (metal) body.

F

74

1234

DEH-3750MP/XU/GS

5678

A

B

C

D

E

56

DEH-3750MP/XU/GS

F

7

8

75

1234

-

T

c

g

ggg

)

.

s

Jigs List

ame Jig No

A

est Dis

B

D-782

emark

Checking the gratin

hecking the grating

Two pieces

C

D

E

F

76

1234

DEH-3750MP/XU/GS

Pioneer DEH-3750MP, DEH-3770MP User Manual

Specifications and Main Features

Frequently Asked Questions

User 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)

3.3 KEYBOARD UNIT

3.4 CD MECHANISM MODULE(GUIDE PAGE)

4. PCB CONNECTION DIAGRAM

4.1 TUNER AMP UNIT

4.2 KEYBOARD UNIT

4.3 CD CORE UNIT(S10.1)

5. ELECTRICAL PARTS LIST

6. ADJUSTMENT

6.1 CD ADJUSTMENT

6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT

6.3 ERROR MODE

6.4 SYSTEM MICROCOMPUTER TEST PROGRAM

7. GENERAL INFORMATION

7.1 DIAGNOSIS

7.1.1 DISASSEMBLY

7.1.2 CONNECTOR FUNCTION DESCRIPTION

7.2 PARTS

7.2.1 IC

7.2.2 DISPLAY

7.3 OPERATIONAL FLOW CHART

7.4 CLEANING

8. OPERATIONS