Pioneer DEH-2050MPA, DEH-2050MPG, DEH-2090MP Service manual

ORDER NO.

CRT4045

DEH-2050MPA/XN/EC

CD RECEIVER

DEH-2050MPA/XN/EC

DEH-2050MPG/XN/EC

DEH-2090MP/XN/ID

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

Model No.

Order No.

Mech.Module

Remarks

CX-3195

CRT3815

S10.5COMP2

CD Mech. Module : Circuit Descriptions, Mech. Descriptions, 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 2007

K-ZZU. OCT. 2007 Printed in Japan

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SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer.

AQualified 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.

- Safety Precautions for those who Service this Unit.

When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable B results.

Caution:

1.During repair or tests, minimum distance of 13 cm from the focus lens must be kept.

2.During repair or tests, do not view laser beam for 10 seconds or longer.

C

CAUTION

Danger of explosion if battery is incorrectly replaced.

Replaced only with the same or equivalent type recommended by the manufacture. Discord used batteries according to the manufacture's instructions.

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[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.	A

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.

B

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.	C
In addition, be sure that there are no pinched wires, etc.

7Make sure screws and soldering scraps do not remain inside the product. Please check that neither solder debris nor screws remain inside the product.

8There 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.

D

a 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.

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.	E
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.

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		1			2			3		4
		CONTENTS
		SAFETY INFORMATION.....................................................................................................................................							2
		1. SERVICE PRECAUTIONS ...............................................................................................................................							5
A		1.1 SERVICE PRECAUTIONS ........................................................................................................................							5
		1.2 NOTES ON SOLDERING							5
		2. SPECIFICATIONS............................................................................................................................................							6
		2.1 SPECIFICATIONS .....................................................................................................................................							6
		2.2 DISC/CONTENT FORMAT ........................................................................................................................							6
		2.3 PANEL FACILITIES....................................................................................................................................							7
		2.4 PANEL FACILITIES							8
		..........................................................................................................................3. BASIC ITEMS FOR SERVICE							9
		3.1 CHECK POINTS AFTER SERVICING.......................................................................................................							9
		3.2 PCB LOCATIONS ....................................................................................................................................							10
		3.3 JIGS LIST .................................................................................................................................................							11
		4. BLOCK DIAGRAM..........................................................................................................................................							12
B		4.1 BLOCK DIAGRAM ...................................................................................................................................							12
		5. DIAGNOSIS....................................................................................................................................................							16
		5.1 OPERATIONAL FLOW CHART ...............................................................................................................							16
		5.2 ERROR CODE LIST ................................................................................................................................							17
		5.3 CONNECTOR FUNCTION DESCRIPTION.............................................................................................							18
		6. SERVICE MODE ............................................................................................................................................							19
		6.1 CD TEST MODE							19
		6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT						....................................................	21
		7. DISASSEMBLY ..............................................................................................................................................							23
		8. EACH SETTING AND ADJUSTMENT ...........................................................................................................							26
		8.1 PCL OUTPUT CONFIRMATION..............................................................................................................							26
		9. EXPLODED VIEWS AND PARTS LIST..........................................................................................................							26
C		9.1 PACKING .................................................................................................................................................							26
		9.2 EXTERIOR...............................................................................................................................................							28
		9.3 CD MECHANISM MODULE.....................................................................................................................							30
		10. SCHEMATIC DIAGRAM...............................................................................................................................							32
		10.1 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) ...........................................................................							32
		10.2 KEYBOARD UNIT..................................................................................................................................							38
		..........................................................................................10.3 CD MECHANISM MODULE(GUIDE PAGE)							40
		10.4 WAVEFORMS ........................................................................................................................................							46
		11. PCB CONNECTION DIAGRAM....................................................................................................................							48
		11.1 TUNER AMP UNIT.................................................................................................................................							48
		11.2 KEYBOARD UNIT ..................................................................................................................................							52
D		11.3 CD CORE UNIT(S10.5COMP2).............................................................................................................							54
		12. ELECTRICAL PARTS LIST							56

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1. SERVICE PRECAUTIONS

1.1 SERVICE PRECAUTIONS

- 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.

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.

5.Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic induction.

A

B

C

1.2 NOTES ON SOLDERING

For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.

Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs accompanied by reworking of soldering.

Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C. Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, although the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of the soldering iron.

Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden).

The following lead-free solders are available as service parts:

Parts numbers of lead-free solder:

GYP1006 1.0 in dia.

GYP1007 0.6 in dia.

GYP1008 0.3 in dia.

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2. SPECIFICATIONS

2.1 SPECIFICATIONS

A

Backup current

...................................... 2 mA or less

B

C

D

E

2.2 DISC/CONTENT FORMAT

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2.3 PANEL FACILITIES

A

B

C

D

E

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2.4PANEL FACILITIES

-Connection Diagram

A

B

C

D

E

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3. BASIC ITEMS FOR SERVICE

3.1 CHECK POINTS AFTER SERVICING

To keep the product quality after servicing, please confirm following check points.

No.		Procedures	Item to be confirmed
1		Confirm whether the customer complain has been	The customer complain must not be reappeared.
		solved.	Display, audio and operations must be normal.
		If the customer complain occurs with the specific
		media, use it for the operation check.
2	CD	Play back a CD.	No malfunction on display, audio and operation.
		(Track search)	Display, audio and operations must be normal.
3	FM/AM tuner	Check FM/AM tuner action.	Display, audio and operations must be normal.
		(Seek, Preset)
		Switch band to check both FM and AM.
4		Check whether no disc is inside the product.	The media used for the operating check must be
			ejected.
5		Appearance check	No scratches or dirt on its appearance after
			receiving it for service.

See the table below for the items to be checked regarding video and audio:

Item to be checked regarding audio

Distortion

Noise

Volume too low

Volume too high

Volume fluctuating

Sound interrupted

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B

C

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3.2 PCB LOCATIONS

A

C

CD Core Unit(S10.5)

B

A

Tuner Amp Unit

C

B

Keyboard Unit

		Unit Number	:	YWM5238(EC)
		Unit Number	:	YWM5234(ID)
D		Unit Name	:	Tuner Amp Unit
		Unit Number	:
		Unit Name	:	Keyboard Unit
		Unit Number	:	CWX3514
		Unit Name	:	CD Core Unit(S10.5COMP2)

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3.3 JIGS LIST

- Jigs List

Remarks

TCD-782 Checking the grating

Checking the grating (Two pieces)

- Grease List

					Remarks
				CD Mechanism Module
		GEM1045		CD Mechanism Module

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

Cleaning paper : GED-008

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B

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4. BLOCK DIAGRAM

4.1 BLOCK DIAGRAM

TUNER AMP UNIT

A

A

ANTENNA

CN401

SYS+B

SWVDD

1

ANTAM

IN-SL

IFA

IFB

REFA

REFB

LDET

DI

CK

CE1

DO

CE2

SLOUT

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

ANT

RFGND1

RFGND2

RFGND3

RFGND4

VCC

SLIN

IFOUTA

IFOUTB

DGND

REFINA

REFINB

LDET

VDD

DI

CK

CE1

DO

CE2

SLOUT

IC2

SL-IN

EEPROM

IFA

IFB

REFA

REFB

LDET

B

DI

CK

CE1

DO

VCO

LFP

CE2

SLOUT

ATT

ATT

TANK

IC1

MIX / IF / PLL

ATT

RF

LFP

ELEC

CF

SOU

FM/AM TUNER UNIT

C

TUNL

1

IN1_L

CDL

2

IN2_L

SYSPW

SYSTEM M

COMPU

IC 601(2

C

REGULATOR IC

PN5012

D

CD CORE UNIT(S10.5COMP2)

1

47

POWEROFF

5

2

36

BSENS

SWD5V

PICKUP UNIT

D

RF-AMP, CD DECODER,

SWVDD

6

IC 911

3

15

TOP41

(P10.5)(SERVICE)

MP3/WMA DECODER,

SYS+B

7

BA4918-V12

4

1

SWVDD

8

10

DIGITAL SERVO /

VDD

B.UP

LASER

CN101

VDD

DATA PROCESSOR

CN701

CN651

9

DIODE

LD- 15

15

141

LD

Q101

MD

5

5

142

PD

LOUT

55

LOUT

13

3

LOUT

VREF

REFO

133

8

8

REFOUT

SWVDD

AC,BD,F,E

HOLOGRAM

50

XTAL

UNIT

Q601

85

DREG

FOM

FOM

X201

3

3

CD

FOP

FOP

/XTAL 52

16.93MHz

MONITOR

FOCUS ACT.

2

2

DRIVER

9

TRACKING ACT.

TOP

1

1

TOP

REGC(M)

DIODE

TOM

TOM

IC301

VDD

55

PLL_VDD

4

4

IC201

LD+

14

14

BA5839FP

TD,FD

Q102

57

DVDD3

12

PE5547A

VDD 9

FOM

VCC

7

VDD

94

DVDD2

11

FOP

SD,MD

121

14

TOP

39

DVDD4

/PUEN

13

TOM

E

SPINDLEMOTOR

M

16

22

16

/RESET

RESET

16

SOP

5

/RESET

8

8

CDRESET

LOEJ

LOEJ

15

SOM

21

43

LOAD/ CARRIAGEMOTOR

M

18

LCOP

CLCONT

CLCONT

BRST,BRXEN,BSRQ

BRST,BRXEN,BSRQ,BDATA,BSCK

17

CONT

9

41

LCOM

CONT

BDATA,BSCK

Q991

CD VD

VD

VD

2

14

VD

Q992

B.UP

8

12EJ

1

15

7

8EJ

5

6

DSCSNS

126

9

HOME

PDL3

S904

S905

S901

12EJ

8EJ

HOME

VD

S903

DSCSNS

VDSENS

11

F

12

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A

SYSTEM MICRO

COMPUTER

IC 601(1/2)

PN5013B

SL-IN

62

SL-

CN351

IFA

77

IF_INA

IFB

78

IF_INB

RL

2

REFA

96

FREF_A

REFB

97

FREF_B

Q351

LDET

99

LOCK

DI

100

DI

B

CK

101

CK

CE1

102

CE

DO

103

DO

CE2

109

VST

SLOUT

136

ADIN7

CN901

ACC SENSE

B.UP

1

1

Q931

BACK UP

59

L_OUT

35

ASENS

ACC

3

3

ASENS

ACC

2

2

GND

ELECTRONIC VOLUME/

SOURCE SELECTOR

7

12

AMP

FL

23

FL

10

10

21

TUNL

1

Rear_L

RLIn

FL

FL

12

12

C

IN1_L

IC 301

3

FL

14

PAL007C

RL

RL

9

9

6

5

RL

Front_L

FLIn

RL

11

11

RL

IC 151

CDL

2

PML014A

IN4+_L

4

AUX-L

22

MUTE

NC/BREM

25

B.REMOTE

6

6

IN2_L

B.REM

IN4-_L

5

AUX-G

VCC

6

B.UP

4

STBY

VCC

20

VDT, VST

VCK,

MUTE

Q201(2/2)

SYSTEM MICRO

COMPUTER

MUTE

IC 601(2/2)

PN5012B

Q201(1/2)

POWEROFF

MUTE

44

D

BSENS

TOP41

SWVDD

DREG

XOUT

82

X601

XIN

81

74.1MHz

REGC(M)

B KEYBOARD UNIT

PLL_VDD

52

AUX IN

DVDD3

BU_X1

CN831

CN1801

1

2

G

L

CN1802

DVDD2

X602

AUX

AUX

4.7186MHz

BU_X2

51

DVDD4

AUX-G

6

6

AUX G

AUX-L

AUX L

7

7

E

CDRESET

34

DSENS

DSENS

DSENS

14

14

D1803-D1810

ILMPW

D1812-D1823

D1825

Q821

ILM+B

ILL+B

B.UP

9

9

Q822

ILMPW

2

SWD5V

SWVDD

3

3

SWVDD

PDL3

S1830

KEY MATRIX

33

SOURCE

4

SRC

SRC

4

SOURCE

S1831

VCK

111

ROT1

10

10

ROT1

1

VDT

110

ROT0

11

11

ROT0

2

KEY DATA

22

VOLUME

X0

X1801

DPDT/SELF

23

DPDT

13

13

DPDT

18

DPDT

X1

23

5MHz

LCD DRIVER/

F

KEYDT/SELF

24

KYDT

12

12

KYDT

20

KYDT

KEY CONTROLLER

SWVDD

10

VLCD

IC 1801

LCD1801

PD6340A

56

VDD

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13

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6

8

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2

3

4

- FM/AM Tuner Unit

A

ANT

RFGND1

RFGND2

RFGND3

RFGND4

VCC

SLIN

IFOUTA

IFOUTB

DGND

RFINA

RFINB

LDET

VDD

DI

CK

CE1

DO

CE2

SLOUT

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

IC2

EEPROM

B

VCO

LFP

ATT

ATT

TANK

IC1

MIX / IF / PLL

ATT

RF

LFP

CF

	C		No.	Symbol	I/O	Explain
			1	ANT	I	Antenna Input	Antenna input. 75 ohm. Surge absorber is necessary.
							Series circuit including an inductor and a resistor is connected with RF
							ground for the countermeasure against the ham of power transmission line.
			2	RFGND1		RF Ground	Ground of R.F. block
			3	RFGND2		RF Ground	Ground of R.F. block
			4	RFGND3		RF Ground	Ground of R.F. block
			5	RFGND4		RF Ground	Ground of R.F. block
			6	VCC		Power Supply	Power supply for Analog block. D.C 8.4 V + 0.3 V
							(performance isn't guaranteed besides 8.4 V)
			7	SLIN	I	Signal Level Input	Input signa level from BE_IC
			8	IFOUTA	O	IF Output	IF signal output (F.E.output)
	D		9	IFOUTB	O	IF Output	IF signal output (F.E.output)
			10	DGND		Digital Ground	Ground of Digital. block
			11	REFINA	I	Reference Signal	Input reference signal for PLL part with FE_IC
			12	REFINB	I	Reference Signal	Input reference signal for PLL part with FE_IC
			13	LDET	O	Lock Detector	PLL lock detecter output "High" active
			14	VDD		Power Supply	Power supply for Digital block. D.C 3.3 V + 0.2 V
			15	DI	I	Data In	Data input (not sending data in tuner reception operating in noise
							being output)
			16	CK	I	CK	Clock data input(not sending data in tuner reception operating in noise
							being output)
	E		17	CE1	I	Chip Enable-1	Chip enable for FE_IC "High" active
			18	DO	O	Data Out	Data output
			19	CE2	O	Chip Enable-2	Chip enable for EEPROM "Low" active. in power ON/OFF, please turn CE2
							into "High" (= VDD).
			20	SLOUT	O	Signal Level Output	Output of FM/AM signals level (D.C.)

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- LCD(CAW1930)

A

B

C

D

E

SEGMENT	COMMON

F

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5. DIAGNOSIS

5.1 OPERATIONAL FLOW CHART

A

Power ON

VDD

Pin 8

B

bsens

Pin 36

bsens = L

asens

Pin 35

asens = L

C

Starts communication with Grille microcomputer.

300 ms

SWVDD

H

Pin 1

300 ms

In case of the above signal, the communication

Source keys

with Grille microcomputer may fail.

D

operative

If the time interval is not 300 msec, the oscillator

may be defective.

Source ON

SYSPWH

Pin 15

E

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

F

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5.2ERROR CODE LIST

-Error Messages

If a CD is not operative or stopped during operation due to an error, the error mode is turned on and cause(s) of

the error is indicated with a corresponding number. This arrangement is intended at reducing nonsense calls from A the users and also for facilitating trouble analysis and repair work in servicing.

(1) Basic Indication Method

1)When SERRORM is selected for the CSMOD (CD mode area for the system), error codes are written to DMIN (minutes display area) and DSEC (seconds display area). The same data is written to DMIN and DSEC. DTNO remains in blank as before.

2)Head unit display examples

Depending on display capability of LCD used, display will vary as shown below. xx contains the error number.							B
	8-digit display		6-digit display		4-digit display
	ERROR-xx		ERR-xx		E-xx

(2) Error Code List

Code	Class	Displayed error code	Description of the code and potential cause(s)
10	Electricity	Carriage Home NG	CRG can't be moved to inner diameter.
		SERVO LSI Com-	CRG can't be moved from inner diameter.
		munication Error	→ Failure on home switch or CRG move mechanism.
			Communication error between microcomputer and SERVO LSI.
11	Electricity	Focus Servo NG	Focusing not available.
			→ Stains on rear side of disc or excessive vibrations on REWRITABLE.
12	Electricity	Spindle Lock NG	Spindle not locked. Sub-code is strange (not readable).
		Subcode NG	→ Failure on spindle, stains or damages on disc, or excessive vibrations.
			A disc not containing CD-R data is found.
			Turned over disc are found, though rarely.
			CD signal error.
17	Electricity	Setup NG	AGC protection doesn't work. Focus can be easily lost.
			→ Damages or stains on disc, or excessive vibrations on REWRITABLE.
30	Electricity	SearchTime Out	Failed to reach target address.
			→ CRG tracking error or damages on disc.
44	Electricity	ALL Skip	Skip setting for all track.
			(CD-R/RW)
50	Mechanism	CD On Mech Error	Mechanical error during CD ON.
			→ Defective loading motor, mechanical lock and mechanical sensor.
A0	System	Power Supply NG	Power (VD) is ground faulted.
			→ Failure on SW transistor or power supply (failure on connector).

Remarks: Mechanical errors are not displayed (because a CD is turned off in these errors). UnreadableTOC does not constitute an error. An intended operation continues in this case. Upper digits of an error code are subdivided as shown below:

1x: Setup relevant errors, 3x: Search relevant errors, Ax: Other errors.

				DEH-2050MPA/XN/EC					17
						7
	5		6						8

C

D

E

F

1

2

3

4

5.3 CONNECTOR FUNCTION DESCRIPTION

A
B
ANTENNA	REAR OUTPUT	WIRED REMOTE INPUT
		(EC)

16141210 8 6 4 2

151311 9 7 5 3 1

C

D

	Pin No.		Pin No.
1		B. UP	9	RL-
	2	GND	10	FL-
3		ACC	11	RL+
	4	NC	12	FL+
5		NC	13	RR-
6		B.REM	14	FR-
7		NC	15	RR+
8		TEL	16	FR+

E

F

18	DEH-2050MPA/XN/EC

1

2

3

4