PIONEER DEH-1770, DEH-1750, DEH-1750MP Service Manual

ORDER NO.

CRT3377

DEH-1750/XN/GS

HIGH POWER CD PLAYER WITH FM/AM TUNER

DEH-1750/XN/GS

DEH-1770/XN/CS

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

Model No.	Order No.					Mech.Module			Remarks
CX-3110	CRT3178					S10.1			CD Mech. Module:Circuit Description, Mech. Description, Disassembly

For details, refer to "Important Check Points for Good Servicing".

PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936

PIONEER CORPORATION 2004

K-ZZW. OCT. 2004 printed in Japan

1

2

3

4

SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely

Arepair 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.

- Service Precaution

1. You should conform to the regulations governing the product (safety, radio and noise, and other

B

regulations), and should keep the safety during servicing by following the safety instructions described in this manual.

2.Before disassembling the unit, be sure to turn off the power. Unplugging and plugging the connectors during power-on mode may damage the ICs inside the unit.

3.To protect the pickup unit from electrostatic discharge during servicing, take an appropriate treatment (shorting-solder) by referring to "the DISASSEMBLY".

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

C

D

E

F

2		DEH-1750/XN/GS
1	2		3	4

5 6 7 8

[Important Check Points for Good Servicing]

In this manual, procedures that must be performed during repairs are marked with the below symbol.

Please be sure to confirm and follow these procedures.

1. Product safety A

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.

B

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.

C

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.

D

When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in order to prevent injuries.

Please pay attention to your surroundings and repair safely.

2. Adjustments

To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification. Adjustments should be performed in accordance with the procedures/instructions described in this manual.

3. Lubricants, Glues, and Replacement parts

Use grease and adhesives that are equal to the specified substance.

Make sure the proper amount is applied.

E

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.

F

		DEH	-1750/XN/GS				3
5	6				7	8

	1	2	3	4
	CONTENTS
	SAFETY INFORMATION.....................................................................................................................................			2
	1. SPECIFICATIONS ............................................................................................................................................			5
A	2. EXPLODED VIEWS AND PARTS LIST ............................................................................................................			8
	2.1 PACKING			8
	2.2 EXTERIOR...............................................................................................................................................			10
	2.3 CD MECHANISM MODULE.....................................................................................................................			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 KEYBOARD UNIT....................................................................................................................................			32
B	4.3 CD CORE UNIT(S10) ..............................................................................................................................			34
	5. ELECTRICAL PARTS LIST ............................................................................................................................			36
	6. ADJUSTMENT ...............................................................................................................................................			39
	6.1 CD ADJUSTMENT...................................................................................................................................			39
	6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT ....................................................			41
	6.3 ERROR MODE ........................................................................................................................................			43
	6.4 SYSTEM MICROCOMPUTER TEST PROGRAM ...................................................................................			44
	7. GENERAL INFORMATION.............................................................................................................................			45
	7.1 DIAGNOSIS .............................................................................................................................................			45
	7.1.1 DISASSEMBLY .....................................................................................................................................			45
	7.1.2 CONNECTOR FUNCTION DESCRIPTION..........................................................................................			48
C	7.2 PARTS......................................................................................................................................................			49
	7.2.1 IC ..........................................................................................................................................................			49
	7.2.2 DISPLAY ...............................................................................................................................................			56
	7.3 OPERATIONAL FLOW CHART ...............................................................................................................			57
	7.4 CLEANING...............................................................................................................................................			58
	8. OPERATIONS ................................................................................................................................................			59

D

E

F

4		DEH-1750/XN/GS
1	2		3	4

5

6

7

8

1. SPECIFICATIONS

A

B

C

D

E

F

		DEH	-1750/XN/GS				5
5	6				7	8

1

2

3

4

A

B

C

D

E

F

6		DEH-1750/XN/GS
1	2		3	4

5

6

7

8

A

B

C

D

E

F

		DEH	-1750/XN/GS				7
5	6				7	8

	1	2	3	4
	2. EXPLODED VIEWS AND PARTS LIST
	NOTES : • Parts marked by	" * " are generally unavailable because they are not in our Master Spare Parts List.
A	• 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.
	• Screw adjacent to"mark on the product are used for disassembly.

•For the applying amount of lobricants or glue, follow the instructions in this manual. (In the case of no amount instructions,apply as you think it appropriate.)

2.1PACKING

B

3

1

15

4 2

8

C

D

E

F

8		DEH-1750/XN/GS
1	2		3	4

		5		6		7		8
PACKING SECTION PARTS LIST
Mark No.		Description		Part No.	Mark No.	Description		Part No.
	1	Accessory Assy		CEA4850	12	Contain Box(DEH-1750)		CHL5347
	2	Screw Assy		CEA3849		Contain Box(DEH-1770)		CHL5348
	3	Screw		CBA1650	13	Protector		CHP2664
*	4	Polyethylene Bag		CEG-127
	5	Screw		CRZ50P090FTC	14	Protector		CHP2868
					15-1	Owner's Manual(DEH-1750)		CRD3910
	6	Screw		TRZ50P080FTC		Owner's Manual(DEH-1770)		CRD3912
*	7	Polyethylene Bag		CEG-158	15-2	Installation Manual(DEH-1750)		CRD3911
	8	Handle		CNC5395		Installation Manual(DEH-1770)		CRD3913
	9	Bush		CNV3930
	10	Polyethylene Bag		CEG-162	15-3	Caution Card		CRP1310
					16	Case Assy		CXB3520
	11	Carton(DEH-1750)		CHG5418	17	Cord Assy		XDE7008
		Carton(DEH-1770)		CHG5419
Owner's Manual,Installation Manual
	Part No.			Language
CRD3910			English, Traditional Chinese, Arabic
CRD3911			English, Traditional Chinese, Arabic
CRD3912			English, Spanish, Portuguese(B)
CRD3913			English, Spanish, Portuguese(B)

A

B

C

D

E

F

		DEH	-1750/XN/GS				9
5	6				7	8

1

2

3

4

2.2 EXTERIOR

A

B

C

D

E

F

10		DEH-1750/XN/GS
1	2		3	4

	5	6
EXTERIOR SECTION PARTS LIST
Mark No.	Description	Part No.
1	Screw	BSZ26P060FTC
2	Screw	BSZ26P100FTC
3	Cable	CDE7702
4	Cord Assy	XDE7008
5	Panel	CNS8048
6	Case	CNB2793
7	Holder	CNC8659
8	Insulator	CNM9145
9	Tuner Amp Unit(DEH-1750)	CWM9601
	Tuner Amp Unit(DEH-1770)	CWM9605
10	Screw	ASZ26P060FTC
11	Screw	BMZ26P160FTC
12	Screw	BPZ26P080FTC
> 13	Fuse(10A)	CEK1208
14	Pin Jack(CN352)	CKB1059
15	Plug(CN901)	CKM1376
16	Connector(CN831)	CKS3581
17	Connector(CN651)	CKS3835
18	Antenna Jack(CN401)	CKX1056
19	Holder	CND2413
20	Holder	CND2414
21	Heat Sink	CNR1762
22	FM/AM Tuner Unit	CWE1912
23	Holder	CND1054
24	Terminal(CN402)	VNF1084

	7	8
Mark No.	Description	Part No.
47	Spring	CBH2367
48	Bracket	CNC6791	A
49	Holder	CNC8042
50	Cover	CNM6276
51	Panel	CNS8044
52	Arm	CNV4692
53	Arm	CNV4728
54	Arm	CNV5576
55	Screw	IMS20P030FZK
56	Chassis Unit	CXC3600
57	CD Mechanism Module(S10)	CXK5605	B
58	Screw	ISS26P055FTC
59	IC(IC302)	TDA7386
60	Transistor(Q921,991)	2SD2396

C

25Detach Grille Assy(DEH-1750) CXC3538 Detach Grille Assy(DEH-1770) CXC3542

	26	Screw	BPZ20P100FZK
	27	Button(VOLUME)	CAC8924	D
	28	Button(SELECT)	CAC8925
	29	Button(BTB,SRC)	CAC8927
	30	Button(LOUD,BAND)	CAC8928
	31	Button(1-6)	CAC8929
	32	Button(CD EJECT,AUDIO)	CAC8930
	33	Button(DETACH)	CAC8931
	34	Spring	CBH2210
	35	Cover	CNS8042
	36	LCD	CAW1847	E
	37	Connector(CN1801)	CKS3580
	38	Holder	CND2412
	39	Sheet	CNM9144
	40	Lighting Conductor	CNV8190
	41	Rubber	CNV8191
	42	Connector	CNV8192
	43	Grille Unit(DEH-1750)	CXC3592
		Grille Unit(DEH-1770)	CXC3994
	44	Button	CAC4836	F
	45	Spring	CBH1835
	46	Spring	CBH2208

		DEH	-1750/XN/GS				11
5	6				7	8

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

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

61	E

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

M

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

1	40	1

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

26

G

I H

28

45

J

23

K

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

35

O

31

85

12		DEH-1750/XN/GS
1	2		3	4

	5	6					7		8
CD MECHANISM MODULE SECTION PARTS LIST
Mark No.	Description	Part No.			Mark No.			Description	Part No.
1	CD Core Unit(S10)	CWX3110		50			Gear		CNV8379
2	Connector(CN101)	CKS4182
3	Connector(CN701)	CKS4188		51			Gear		CNV8380
4	Screw	BMZ20P035FTC		52			Gear		CNV8381
5	Screw	BSZ20P040FTC		53			Gear		CNV8382
				54			Gear		CNV8383
6	Screw(M2x4)	CBA1362		55			Gear		CNV8384
7	Screw(M2x3)	CBA1824
8	Screw(M2x3)	CBA1825		56			Rack		CNV8385
9	•••••			57			Arm		CNV8386
10	Washer	CBF1038		58			Arm		CNV8387
				59			Guide		CNV8388
11	Washer	CBF1060		60			Roller		CNV7218
12	Spring	CBH2390
13	Spring	CBH2606		61			Gear		CNV8389
14	Spring	CBH2607		62			Arm		CNV8391
15	Spring	CBH2608		63			Arm		CNV8390
				64			Arm		CNV8392
16	Spring	CBH2609		65			Damper		CNV7313
17	Spring	CBH2610
18	Spring	CBH2735		66			Damper		CNV7314
19	Spring	CBH2612		67			Arm		CNV8394
20	Spring	CBH2613		68			Arm		CNV8395
				69			Guide		CNV8396
21	Spring	CBH2614		70			Guide		CNV8397
22	Spring	CBH2615
23	Spring	CBH2616		71			Holder		CNV8398
24	Spring	CBH2617		72			Arm		CNV8402
25	Spring	CBH2620		73			Gear		CNV8400
				74			Damper		CNV7618
26	Spring	CBH2621		75			Motor Unit(M1)		CXC4440
27	Spring	CBH2641
28	Spring	CBH2642		76			Chassis Unit		CXC2318
29	Spring	CBH2643		77			Screw Unit		CXB8729
30	Spring	CBH2659		78			Gear Unit		CXC2397
				79			Arm Unit		CXC2316
31	Spring	CBH2688		80			Arm		CND1896
32	•••••
33	Shaft	CLA4441		81			Arm		CND1894
34	Frame	CNC9962		82			Motor Unit(M2)		CXB8933
35	Frame	CNC9963		83			Bracket		CNC9985
				84			•••••
36	Bracket	CND2712		85			Screw(M2x5)		EBA1028
37	Bracket	CND1895
38	Arm	CNC9968		86			Screw		JFZ20P020FTC
39	Arm	CND1909		87			Screw		JGZ17P022FTC
40	Lever	CND2032		88			•••••
				89			Washer		YE20FTC
41	Lever	CNC9984		90			Pickup Unit(P10)(Service)		CXX1641
42	Sheet	CNM8134
43	Collar	CNV7798		91			Screw		IMS26P030FTC
44	Guide	CNV7799		92			Spring		CBL1635
45	Arm	CNV8403		93			Clamper		CNV8372
46	Rack	CNV8374
47	Holder	CNV8376
48	Holder	CNV8377
49	Arm	CNV8378
				DEH	-1750/XN/GS					13
	5	6						7	8

A

B

C

D

E

F

1

2

3

4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

A

A TUNER AMP UNIT

VDD

FM/AM TUNER UNIT

7

6

13

5

10

9

8

11

14

18

19

20

21

NC

CE2

VDD

SL

DI

CK

CE1

NC

DO

NC

NC

NC

NC

ROM_

IC 3 EEPROM

IC 5

5.0V

5V

← 3.3V

B

OSC

LPF

ANTENNA

CN401

AM ANT

FMRF

1

1

ATT

2

Rch 24

IC 2

FM ANT

IC 1

2.5V

3.3V

3

ATT

Lch 23

FMRF

MIXER, IF AMP

DET, FM MPX,

RF adj

RDS DECODER

ANT adj

T51

CF52

C

OSCGND

AUDIOGND

VDD 3.3

IC 4

RFGND

DGND

NC

VCC

3.3V

3.3V

← 2.5V

2.5V

2

12

15

22

16

4

17

TUN 3V

TUN L

2

VCC

CD L

3

PICKUP UNIT

CD CD CORE UNIT(S10)

MUTE

48

(P10)(SERVICE)

D

CN101

CN701

X1

70

LASER

CN651

X601

Q101

LD+

1

20

LOUT

X2

69

DIODE

14

3R3V

LD

LOUT

8

14

MD

5

2

PD

xtal

23

SYSPW

43

HOLOGRAM

AC, F, E, BD

X201

SYSTEM CONTROLLER

SERVO XTAL

24

UNIT

FOP

FOP

CONTROL,

FOCUS ACT.

1

DSP,

TOP

TOP

MONITOR TRACKING ACT.

4

LPF, DAC

IC 601(2/2)

IC 652

DIODE

PE5449A

12

FD, TD, SD, MD

IC 201

SO

12

XSI

16

6

2

4

16

XSI

FOP

UPD63712AGC

29

LOEJ

13

TOP

42

LIMIT

TC7SET08FU

28

ACT,MOTOR

79

CONT

SPINDLE

M

DISCSENS

DRIVER

MOTOR

HOME

16

SOP

78

15

SOM

VDSENS

LOADING/ CARRIAGEMOTOR

M

17

LCOM

18

LOEJ

22

LOEJ

5

17

VDCONT

LCOP

INTRQ

KYDT

DSENS

DPDT

swvdd

ILMPW

E

CONT

9

CONT

7

15

B.UP

IC 301

66

41

8

65

9

21

22

BA5835FP

DSCSNS

6

16

Q

VDSENS

VDD

VD

Q991

1

20

VD

B.UP

12EJ

8EJ

DSCSNS

3.3V REGULATOR

2

21

3R3V

3

IC 701

1

Q992

NJM2885DL1-33

F

14

DEH-1750/XN/GS

1

2

3

4

5

6

7

8

A

RESET

1

IC 961

2

VDD

S-80834CNY

CN352

RCA OUT

60

RL

2

RL

reset

Q352

CE2

55

TUNPCE2

CE1

56

TUNPCE1

DO

11

TUNPDI

DI

12

TUNPDO

B

CK

13 TUNPCK

VDD REGULATOR

Q911

76

SL

VDD

Q912

SYSTEM CONTROLLER

IC 601(1/2)

DALMON

32

PE5449A

CN901

BACKUP SENSE

B.UP

bsens

64

16

FUSE

16

BACK UP

Q931

10A

63

ACC

asens

14

14

ACC

ACC SENSE

B REMOTE

5

IC 551

1

B.UP

11

11

B.REM

TPD1018F

6

ANTPW

49

15

15

GND

C

ELECTRONIC VOLUME/

POWER AMP

B.UP

TUN L

2

SOURCE SELECTOR

6,20

IN1-L

FL-

23

7

7

FL-

21

IC 151

10

14

IC 302

FL+

5

5

FL+

FL

FLIN

3

RL-

8

8

PML010A

RL

11

12

RLIN

TDA7386

5

RL-

RL+

6

CD L

3

IN2-L

MUTE

STBY

6

RL+

22

4

MUTE

SYS 8.4V REGULATOR

Q452

Q921

VCC

Q923

48

B.UP

UTE

X1

70

D

X601

X2

69

PW

43

SYSPW

R

TUNER 3.3V REGULATOR

IC 901

TUN 3V

1

3

VCC

BA33BC0FP

B KEYBOARD UNIT

CN831

CN1801

Q821

E

B.UP

ILM

7

7

ILL

Q822

Q801

SW5V

VDD

SWVDD

5

5

SOURCE

SOURCE

6

6

SOURCE

DPDT

4

4

DPDT

56

10

DSENS

8

8

DSENS

VDD

VLCD

KEY DATA

KEY MATRIX

18

DPDT

LCD DRIVER/

KYDT

KYDT

3

3

KEY CONTROLLER

20

KTDT

IC 1801

LCD

PD6340A

F

5

6

DEH-1750/XN/GS

7

8

15

1

2

3

4

3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE)

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

A								A-a
							Large size
							SCH diagram
		A-a			A-b

C CN701

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

CD:+0.4dBs

B

FM:-20.4dBs

AM:-31.3dBs

C

D

ANTENNA

E	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.

The > mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation.

F

A

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

2.2	←	2R2
0.022		←	R022

B

CN1801

16		DEH-1750/XN/GS
1	2		3	4

5

6

7

8

A-b

A

A TUNER AMP UNIT

>

4dBs	FM:	+2.8dBs
	AM:	-8.1dBs
	CD:+10.6dBs

DEH-1750/XN/GS

5

6

7

	REAR L	FM:+2.0dBs
	REAR R	AM: -8.9dBs
		CD:+9.8dBs

B

C

>

CEK1208
10A	BACKUP

GND

		ACC
		B.REM
		RL–	D
		FL–
		RL+
		FL+
		RR–
		FR–
		RR+
		FR+

FM:+29.3dBs

AM:+18.4dBs

CD:+36.6dBs

E

F

A

17

8

1

A

A-b 1

B

C

A-a A-b

D

E

F

A-a

18

1

C CN701

2

3

4

2	3	4
CD:+0.4dBs

AM:-31.3dBs

FM:-20.4dBs

	DEH-1750/XN/GS
2	3	4

5

6

1750/XN/GS-DEH

7

8

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.

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.

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

2.2	←	2R2
0.022		←	R022

19	-A
	a				A-a	A-b
		F	E	D		C

4 3

5

5

6

B

CN1801

6

7

8

	b-A
B		A