PIONEER CDX-P2050 Service Manual

Service

Manual

CDX-P2050VC/X1N/UC

ORDER NO.

CRT2388

VOICE CONTROL MULTI-CD PLAYER

CDX-P2050VC X1N/UC

CDX-P2050VN X1N/EW

CDX-P2050VS X1N/EW

-See the separate manual CX-938(CRT2357) for the CD mechanism description, disassembly and circuit description.

-The CD mechanism employed in this model is one of C8 series.

CONTENTS

1.	SAFETY INFORMATION ............................................	3	7.	GENERAL INFORMATION .......................................	45
2.	EXPLODED VIEWS AND PARTS LIST .......................	4		7.1 DIAGNOSIS ........................................................	45
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...		12		7.1.1 TEST MODE ..............................................	45
4.	PCB CONNECTION DIAGRAM ................................	26		7.1.2 DISASSEMBLY .........................................	54
5.	ELECTRICAL PARTS LIST ........................................	34		7.2 IC .........................................................................	56
6.	ADJUSTMENT..........................................................	39	8.	OPERATIONS AND SPECIFICATIONS.....................	65

PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.

PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER ELECTRONIC CORPORATION 1999

K-ZZY. MAY 1999 Printed in Japan

CDX-P2050VC,P2050VN,P2050VS

- CD Player Service Precautions

1.For pickup unit(CXX1285) handling, please refer to"Disassembly"(See page 54). During replacement, handling precautions shall be taken to prevent an electrostatic discharge(protection by a short pin).

2.During disassembly, be sure to turn the power off since an internal IC might be destroyed when a connector is plugged or unplugged.

3.Please checking the grating after changing the pickup unit(see page 39) since these screws protects the mechanism during transport, be sure to affix it when it is transported for repair, etc.

Transportation of multi-CD Player

Seal

After removing the transport screw, cover the hole with the supplied seal.

Transport screw

Attach to the original position before transporting the set.

A transport screw has been attached to the set in order to protect it during transportation. After removing the transport screw, cover the hole with the supplied seal. Be sure to remove the transport screw before mounting the set. The removed transport screw should be retained in the accessory bag for use the next time the set is transported.

2

CDX-P2050VC,P2050VN,P2050VS

1. SAFETY INFORMATION

1.1 CDX-P2050VC/X1N/UC

CAUTION

This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.

Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and refer the repair to a qualified service technician.

WARNING

This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of

California to cause cancer, birth defects or other reproductive harm.

Health & Safety Code Section 25249.6 - Proposition 65

1.2 CDX-P2050VN/X1N/EW and CDX-P2050VS/X1N/EW

1. Safety Precautions for those who Service this Unit.

•Follow the adjustment steps (see pages 39 through 44)in the service manual when servicing this unit. When checking or adjusting the emitting power of the laser diode exercise caution in order to get safe, reliable results.

Caution:

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

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

2.A “CLASS 1 LASER PRODUCT” label is affixed to the rear of the player.

3.The triangular label is attached to the mechanism unit frame.

4. Specifications of Laser Diode

Specifications of laser radiation fields to which human access is possible during service. Wavelength = 800 nanometers

3

CDX-P2050VC,P2050VN,P2050VS

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

22

25

26

24

29	23

27	28
	30	16
		17

3

15

20

13

18

7

19

21

11

11

8

12

1

4

5

6

2

31

33

32

4

CDX-P2050VC,P2050VN,P2050VS

NOTE:

-Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List.

-Screws adjacent to mark on the product are used for disassembly.

-PACKING SECTION PARTS LIST

Mark No. Description				Part No.
			CDX-P2050VC/X1N/UC	CDX-P2050VN/X1N/EW	CDX-P2050VS/X1N/EW
	1	Screw Assy	CEA1962	CEA1962	CEA1962
	2	Screw	CBA1295	CBA1295	CBA1295
*	3	Polyethylene Sheet	CNM5158	CNM5158	CNM5158
	4	Screw(M6X16)	HMB60P500FMC	HMB60P500FMC	HMB60P500FMC
	5	Screw	HMF40P080FZK	HMF40P080FZK	HMF40P080FZK
	6	Nut	NF60FMC	NF60FMC	NF60FMC
*	7	Polyethylene Bag	CEG1099	CEG1099	CEG1099
	8	Polyethylene Bag	CEG1185	CEG1026	CEG1026
	9	Carton	CHG3790	CHG3788	CHG3789
	10	Contain Box	CHL3790	CHL3788	CHL3789
	11	Protector	CHP2156	CHP2156	CHP2156
	12	Protector	CHP2157	CHP2157	CHP2157
	13	Seal	CNM5599	CNM5741	CNM5741
	14-1	Owner’s Manual	CRD3003	CRD3005	CRD3007
	14-2	Installation Manual	CRD3004	CRD3006	CRD3008
*	14-3	Caution Card	CRP1205	CRP1205	CRP1205
*	14-4	Warranty Card	Not used	CRY1087	CRY1087
	15	Magazine Assy	CXB4028	CXB4028	CXB4028
	16	Angle Assy	CXB4345	CXB4344	CXB4344
	17	Angle	CNB2447	CNB2440	CNB2440
	18	Controller Assy	CXB3633	CXB3633	CXB3633
	19	Cord	CDE5831	CDE5830	CDE5831
*	20	Caution Card	CRP1090	CRP1090	CRP1090
*	21	Caution Card	CRP1196	CRP1196	CRP1196
	22	Accessory Assy	CEA2508	CEA2508	CEA2508
	23	Cord	CDE6004	CDE6004	CDE6004
	24	Cord Clamper Assy	CEA2072	CEA2072	CEA2072
	25	Cord Clamper	CNV2581	CNV2581	CNV2581
*	26	Polyethylene Bag	E36-615	E36-615	E36-615
*	27	Polyethylene Bag	CEG-238	CEG-238	CEG-238
	28	Fastener(rough)	CNM3709	CNM3709	CNM3709
	29	Fastener(soft)	CNM3710	CNM3710	CNM3710
	30	Clamper	CNV3751	CNV3751	CNV3751
	31	Microphone Assy	CPM1017	CPM1017	CPM1017
	32	Cushion	MEH1007	MEH1007	MEH1007
	33	Clip Stand	MNK1221	MNK1221	MNK1221

- Owner’s Manual

Model	Part No.	Language
CDX-P2050VC/X1N/UC	CRD3003	English, French
CDX-P2050VN/X1N/EW	CRD3005	English, French, German, Dutch
CDX-P2050VS/X1N/EW	CRD3007	English, Spanish, Italian, Portuguese(B)

- Installation Manual

Model	Part No.	Language
CDX-P2050VC/X1N/UC	CRD3004	English, French
CDX-P2050VN/X1N/EW	CRD3006	English, French, German, Dutch
CDX-P2050VS/X1N/EW	CRD3008	English, Spanish, Italian, Portuguese(B)

5

CDX-P2050VC,P2050VN,P2050VS

2.2 EXTERIOR

6

CDX-P2050VC,P2050VN,P2050VS

(1) EXTERIOR SECTION PARTS LIST

Mark No. Description		Part No.	Mark No. Description			Part No.
1	Screw	BMZ26P040FMC		31	•••••
2	Screw	BMZ30P040FZK	32		•••••
3	Button(EJECT)	CAC6363	33		CD Mechanism Module	CXK4920
4	Screw(M4X4)	CBA1353	34		Screw	IMS20P035FZK
5	Spring	CBH1862	35		Screw	IMS26P040FMC
6	Connector	CDE5525	36		Transistor(Q910)	2SD2396
7	Connector	CDE6002	37		Cord Assy	CDE5992
8	Cord	See Contrast table(2)	38		Case	See Contrast table(2)
9	Controller Assy	CXB3633	39		Screw	BSZ30P040FZK
10	Cord	CDE6004	40		Voice Unit	See Contrast table(2)
11	Upper Case	See Contrast table(2)	41		Connector(CN901)	CKS3763
12	Arm	CNC8058	42		Connector(CN303)	CKS3585
13	Insulator	CNM6074	43		Screw	BMZ26P060FMC
14	Panel	CNS5218	44		IC(IC71)	NJM7805FA
15	Damper	CNV5227	45		Holder	CNC8209
16	Power Unit	CWM6365	46		Holder	CNC8422
17	Screw	BMZ26P060FMC	47		Clamper	CEF1008
18	Plug(CN991)	CKS-460	48		Sheet	CNM6531
19	Connector(CN921)	CKS3407	49		Cord Assy	MDE1099
20	Connector(CN911)	CKS2222	50		Vibration Prevention Material	MED1008
21	Holder	CNC8059	51		Connector(CN1)	MKP1029
22	Holder	CNC8060	52		Button A	MNK1294
23	Lower Case Unit	See Contrast table(2)	53		Button B	MNK1295
24	Grille Unit	See Contrast table(2)	54		Case	MNK1298
25	Screw	BPZ20P080FMC	55		PCB Assy	MWM1073
26	Door	See Contrast table(2)	56		Grille Assy	MXX1105
27	Door	See Contrast table(2)	57		Screw	PPZ26P080FZK
28	Holder	CNC8141	58		Cushion	TED1366
29	Lever	See Contrast table(2)
30	Connector(CN922)	CKS3599

(2) CONTRAST TABLE

CDX-P2050VC/X1N/UC, CDX-P2050VN/X1N/EW and CDX-P2050VS/X1N/EW are constructed the same

except for the following:

Mark No. Symbol and Description			Part No.
		CDX-P2050VC/X1N/UC	CDX-P2050VN/X1N/EW	CDX-P2050VS/X1N/EW
8	Cord	CDE5831	CDE5830	CDE5831
11	Upper Case	CNB2446	CNB2445	CNB2445
23	Lower Case Unit	CXB3398	CXB3397	CXB3397
24	Grille Unit	CXB4394	CXB4396	CXB4395
26	Door	CAT2023	CAT2008	CAT2008
27	Door	CAT2024	CAT2009	CAT2009
29	Lever	CNS5393	CNS5357	CNS5357
38	Case	CNB2493	CNB2441	CNB2441
40	Voice Unit	CWM6367	CWM6367	CWM6366

7

CDX-P2050VC,P2050VN,P2050VS

2.3 CD MECHANISM MODULE

8

CDX-P2050VC,P2050VN,P2050VS

- CD MECHANISM MODULE SECTION PARTS LIST

Mark No. Description		Part No.	Mark No. Description			Part No.
1	Connector	CDE6069		46	Plate	CNC8375
2	CD Core Unit(C8)	CWX2277	47		Cover	CNC8434
3	Connector(CN701)	CKS1953	48		Sheet	CNM6009
4	Connector(CN101)	CKS2272	49		Spacer	CNM6146
5	Screw	BMZ20P025FMC	50		Sheet	CNM6296
6	Screw	CBA1037	51		PCB	CNP5227
7	Screw	CBA1041	52		PCB	CNP5228
8	Screw	CBA1176	53		Ball	CNR1189
9	Screw	CBA1362	54		Gear	CNR1531
10	Screw	CBA1387	55		Belt	CNT1086
11	Screw	CBA1493	56		Gear	CNV5472
12	Screw	CBA1476	57		Gear	CNV5473
13	Screw	CBA1486	58		Rail	CNV5920
14	Washer	CBF1038	59		Lever	CNV5475
15	Spring	CBH1867	60		Gear	CNV5477
16	Spring	CBH2172	61		Arm	CNV5478
17	Spring	CBH2173	62		Holder	CNV5480
18	Spring	CBH2174	63		Guide	CNV5921
19	Spring	CBH2175	64		Guide	CNV5922
20	Spring	CBH2177	65		Holder	CNV5483
21	Spring	CBH2178	66		Holder	CNV5484
22	Spring	CBH2179	67		Clamper	CNV5485
23	Spring	CBL1390	68		Gear	CNV5486
24	Spring	CBL1392	69		Gear	CNV5562
25	Spring	CBL1404	70		Holder	CNV5563
26	Short Pin	CBL1239	71		Stopper	CNV5564
27	Volume(VR801)	CCW1024	72		Lighting Conductor	CNV5785
28	Screw	CBA1491	73		Mechanism PCB	CWX2303
29	Shaft	CLA3304	74		Connector(CN801)	CKS1965
30	Arm	CNC7901	75		Connector(CN802)	CKS3486
31	Lever	CNC7905	76		Damper Unit	CXA7159
32	Lever	CNC7906	77		Chassis Unit	CXB2850
33	Arm	CNC7908	78		•••••
34	Arm	CNC7909	79		Chassis Unit	CXB2851
35	Holder	CNC7911	80		Arm Unit	CXB2855
36	Holder	CNC7912	81		Screw Unit	CXB2857
37	Lever	CNC7919	82		•••••
38	Stopper	CNC7920	83		Frame Unit	CXB4427
39	Frame	CNC7921	84		Magazine Holder Unit	CXB4460
40	Lever	CNC7922	85		Motor Unit(M851)(SPINDLE)	CXB3003
41	Bracket	CNC7923	86		Motor Unit(M854)(CARRIAGE)	CXB3004
42	Lever	CNC7924	87		Screw	JFZ20P025FMC
43	Frame	CNC7927	88		Motor Unit(M853)(TRAY)	CXB4421
44	Frame	CNC7928	89		Screw	JFZ20P025FMC
45	Bracket	CNC8355	90		Motor Unit(M852)(ELV)	CXB3006

9

CDX-P2050VC,P2050VN,P2050VS

Mark No. Description		Part No.
91	Screw	JFZ20P025FMC
92	Lever Unit	CXB3938
93	•••••
94	Gear Unit	CXB4338
95	Screw	JGZ17P025FZK
96	Pickup Unit(Service)	CXX1285
97	•••••
98	•••••
99	Screw	IMS26P040FMC
100	Screw	JFZ20P025FNI
101	Photo-transistor(Q851)	PT4800
102	Spring Switch(S851,S853)	CSN1051
103	LED(D851)	CN504-2
104	Spring Switch(S852)	CSN1052

10

CDX-P2050VC,P2050VN,P2050VS

2.4 MAGAZINE ASSY

- MAGAZINE ASSY SECTION PARTS LIST

Mark No.	Description	Part No.
1	Magazine Assy	CXB4028
2	Tray	CNV5341
3	Label	CRW1396

11

	1		2		3		4

CDX-P2050VC,P2050VN,P2050VS

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

C

A

CD CORE UNIT

A

MECHANISM

PCB

PICKUP UNIT (SERVICE)

B

D

SWITCH PCB

C

E MOTOR PCB

D

12

	1		2		3		4

	5		6		7		8

CDX-P2050VC,P2050VN,P2050VS

A

B POWER UNIT

F CN303

B

C

D

13

	5		6		7		8

	1		2		3		4

CDX-P2050VC,P2050VN,P2050VS

A

F VOICE UNIT

B

G PCB ASSY

C

D

14

	1		2		3		4

	5		6		7		8

CDX-P2050VC,P2050VN,P2050VS

A

B

B

CN922

C

D

15

	5		6		7		8

	1		2		3		4

CDX-P2050VC,P2050VN,P2050VS

3.2 OVERALL CONNECTION DIAGRAM

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

PARTS LIST”.

A

C

MECHANISM

PICKUP UNIT(SERVICE) CXX1285	PCB
	CN802	CN801

4

10

11

9 12

1

B

M854

CXB3004

D	M851
	CXB3003

SWITCH PCB

RF-AMP,SERVO,DSP

6

8

13

21

CN101

M853

CXB4421

C	E MOTOR PCB CXB3006
	M852

4CH SERVO DRIVER

10K

D

MOTOR DRIVER

16 A1/2 C D E

	1		2		3		4

	5		6		7		8

CDX-P2050VC,P2050VN,P2050VS

A

3

11

9

A CD CORE UNIT

O,DSP,DAC	17	B
	16
	15

20

19

C

A 2/2

5

2

7

18

D

RIVER

A1/2 17

	5		6		7		8

	1		2		3		4

CDX-P2050VC,P2050VN,P2050VS

A

B

PD5512B

SYSTEM CONTROLLER

A 1/2

C

D

18 A2/2

	1		2		3		4

	5		6		7		8

CDX-P2050VC,P2050VN,P2050VS

A

SRAM

CN701

CN911

R769(1/8W)R768(1/8W)

B POWER UNIT

IP-BUS DRIVER

B

C

D

A2/2 19

	5		6		7		8

CDX-P2050VC,P2050VN,P2050VS

Note:1. The encircled numbers denote measuring pointes in the circuit diagram. 2. Reference voltage

- Waveforms

REFO:2.5V

1 RFI

0.5V/div.

0.5µs/div.

1 CH1: RFI

1V/div.

1 CH1: RFI

1V/div.

0.5ms/div.

0.5ms/div.

Normal mode: play

2 CH2: MIRR

5V/div.

2 CH2: MIRR

5V/div.

Test mode: Tracking open

Normal mode: The defect part

passes 800µm

REFO →

REFO →

REFO →

REFO →

REFO →

3 CH1: FD

0.5V/div.

3 CH1: FD

0.5V/div.

6 CH1: FE

0.5V/div.

0.2s/div.

0.2s/div.

1ms/div.

4 CH2: FOR

2V/div.

5 CH2: FOK

2V/div.

7 CH2: XSI

2V/div.

Test mode: No disc, Focus close

Normal mode: Focus close

Normal mode: Focus close

REFO →

REFO →

REFO →

REFO →

REFO →

REFO →

GND →

8 CH1: TE

0.5V/div.

8 CH1: TE

0.5V/div.

8 CH1: TE

0.5V/div.

0.5ms/div.

0.5ms/div.

5ms/div.

9 CH2: TD

0.5V/div.

9 CH2: TD

0.5V/div.

9 CH2: TD

0.5V/div.

Test mode: 32 tracks jump (REV)

Test mode: Single jump (REV)

Test mode: 100 tracks jump (REV)

REFO →

REFO →

REFO →

REFO →

REFO →

REFO →

6 CH1: FE

0.1V/div.

3 CH1: FD

0.5V/div.

3 CH1: FD

0.5V/div.

20ms/div.

0.5s/div.

0.5s/div.

3 CH2: FD

0.2V/div.

0 CH2: MD

1V/div.

0 CH2: MD

1V/div.

Normal mode: Play

Normal mode: Focus close (12cm)

Normal mode: Focus close (8cm)

REFO →

REFO

→

REFO →

REFO →

REFO

→

REFO →

20

CDX-P2050VC,P2050VN,P2050VS

8 CH1: TE

0.2V/div.

8 CH1: TE

0.5V/div.

0 MD

0.5V/div.

0.1s/div.

5ms/div.

20ms/div.

9 CH2: TD

0.2V/div.

! CH2: SD

0.5V/div.

Normal mode: play

TEST mode:100Tracks jump(FWD)

Normal mode: Play (12cm)

REFO →

REFO →

REFO →

REFO →

REFO →

0 MD

1V/div.

10ms/div.

@ EFM

1V/div.

5µs/div.

8 CH1: TE

1V/div.

2ms/div.

# CH2: TEC

1V/div.

Long Search (12cm)

Normal mode: Play

Test mode: Focus close

Tracking open

REFO →

REFO →

REFO →

REFO →

GND →

8 CH1: TE

0.5V/div.

% SCKO

2V/div.

1µs/div.

^ DOUT

2V/div.

10µs/div.

0.2s/div.

6 CH2: FE

0.5V/div.

Normal mode: AGC after focus close

Normal mode: Play

Normal mode: Play

REFO →

REFO →

REFO →

REFO →

GND →

GND →

& LRCK

2V/div.

20µs/div.

* VD

5V/div.

50ms/div.

Normal mode: Play

Normal mode: No disc

GND →

REFO →

GND →

21