PIONEER CDX-P2050 Service Manual

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

ORDER NO.

CRT2388

VOICE CONTROL MULTI-CD PLAYER

CDX-P2050VC X1N/UC

CONTENTS

1. SAFETY INFORMATION ............................................3

2. EXPLODED VIEWS AND PARTS LIST.......................4

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM...12

4. PCB CONNECTION DIAGRAM ................................26

5. ELECTRICAL PARTS LIST ........................................34

6. ADJUSTMENT..........................................................39

7. GENERAL INFORMATION .......................................45

7.1 DIAGNOSIS ........................................................45

7.1.1 TEST MODE..............................................45

7.1.2 DISASSEMBLY .........................................54

7.2 IC .........................................................................56

8. OPERATIONS AND SPECIFICATIONS.....................65

- 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.

CDX-P2050VC/X1N/UC

CDX-P2050VN X1N/EW CDX-P2050VS X1N/EW

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.

Transport screw Attach to the original position before transporting the set.

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

Transportation of multi-CD Player

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.

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.

ARNING

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

CDX-P2050VC,P2050VN,P2050VS

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

CDX-P2050VC,P2050VN,P2050VS

Part No.

Mark No. Description 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)

- PACKING SECTION PARTS LIST

NOTE:

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

- Screws adjacent to

∇ mark on the product are used for disassembly.

- 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)

CDX-P2050VC,P2050VN,P2050VS

2.2 EXTERIOR

CDX-P2050VC,P2050VN,P2050VS

1 Screw BMZ26P040FMC 2 Screw BMZ30P040FZK 3 Button(EJECT) CAC6363 4 Screw(M4X4) CBA1353 5 Spring CBH1862

6 Connector CDE5525 7 Connector CDE6002 8 Cord

See Contrast table(2)

9 Controller Assy CXB3633

10 Cord CDE6004

11 Upper Case

See Contrast table(2)

12 Arm CNC8058 13 Insulator CNM6074 14 Panel CNS5218 15 Damper CNV5227

16 Power Unit CWM6365 17 Screw BMZ26P060FMC 18 Plug(CN991) CKS-460 19 Connector(CN921) CKS3407 20 Connector(CN911) CKS2222

21 Holder CNC8059 22 Holder CNC8060 23 Lower Case Unit

See Contrast table(2)

24 Grille Unit See Contrast table(2) 25 Screw BPZ20P080FMC

26 Door

See Contrast table(2)

27 Door See Contrast table(2) 28 Holder CNC8141 29 Lever

See Contrast table(2)

30 Connector(CN922) CKS3599

31 ••••• 32 ••••• 33 CD Mechanism Module CXK4920 34 Screw IMS20P035FZK 35 Screw IMS26P040FMC

36 Transistor(Q910) 2SD2396 37 Cord Assy CDE5992 38 Case

See Contrast table(2)

39 Screw BSZ30P040FZK 40 Voice Unit

See Contrast table(2)

41 Connector(CN901) CKS3763 42 Connector(CN303) CKS3585 43 Screw BMZ26P060FMC 44 IC(IC71) NJM7805FA 45 Holder CNC8209

46 Holder CNC8422 47 Clamper CEF1008 48 Sheet CNM6531 49 Cord Assy MDE1099 50

Vibration Prevention Material MED1008

51 Connector(CN1) MKP1029 52 Button A MNK1294 53 Button B MNK1295 54 Case MNK1298 55 PCB Assy MWM1073

56 Grille Assy MXX1105 57 Screw PPZ26P080FZK 58 Cushion TED1366

(1) EXTERIOR SECTION PARTS LIST

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

Part No.

Mark No. Symbol and Description 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

(2) CONTRAST TABLE CDX-P2050VC/X1N/UC, CDX-P2050VN/X1N/EW and CDX-P2050VS/X1N/EW are constructed the same except for the following:

CDX-P2050VC,P2050VN,P2050VS

2.3 CD MECHANISM MODULE

CDX-P2050VC,P2050VN,P2050VS

1 Connector CDE6069 2 CD Core Unit(C8) CWX2277 3 Connector(CN701) CKS1953 4 Connector(CN101) CKS2272 5 Screw BMZ20P025FMC

6 Screw CBA1037 7 Screw CBA1041 8 Screw CBA1176 9 Screw CBA1362

10 Screw CBA1387

11 Screw CBA1493 12 Screw CBA1476 13 Screw CBA1486 14 Washer CBF1038 15 Spring CBH1867

16 Spring CBH2172 17 Spring CBH2173 18 Spring CBH2174 19 Spring CBH2175 20 Spring CBH2177

21 Spring CBH2178 22 Spring CBH2179 23 Spring CBL1390 24 Spring CBL1392 25 Spring CBL1404

26 Short Pin CBL1239 27 Volume(VR801) CCW1024 28 Screw CBA1491 29 Shaft CLA3304 30 Arm CNC7901

31 Lever CNC7905 32 Lever CNC7906 33 Arm CNC7908 34 Arm CNC7909 35 Holder CNC7911

36 Holder CNC7912 37 Lever CNC7919 38 Stopper CNC7920 39 Frame CNC7921 40 Lever CNC7922

41 Bracket CNC7923 42 Lever CNC7924 43 Frame CNC7927 44 Frame CNC7928 45 Bracket CNC8355

46 Plate CNC8375 47 Cover CNC8434 48 Sheet CNM6009 49 Spacer CNM6146 50 Sheet CNM6296

51 PCB CNP5227 52 PCB CNP5228 53 Ball CNR1189 54 Gear CNR1531 55 Belt CNT1086

56 Gear CNV5472 57 Gear CNV5473 58 Rail CNV5920 59 Lever CNV5475 60 Gear CNV5477

61 Arm CNV5478 62 Holder CNV5480 63 Guide CNV5921 64 Guide CNV5922 65 Holder CNV5483

66 Holder CNV5484 67 Clamper CNV5485 68 Gear CNV5486 69 Gear CNV5562 70 Holder CNV5563

71 Stopper CNV5564 72 Lighting Conductor CNV5785 73 Mechanism PCB CWX2303 74 Connector(CN801) CKS1965 75 Connector(CN802) CKS3486

76 Damper Unit CXA7159 77 Chassis Unit CXB2850 78 ••••• 79 Chassis Unit CXB2851 80 Arm Unit CXB2855

81 Screw Unit CXB2857 82 ••••• 83 Frame Unit CXB4427 84 Magazine Holder Unit CXB4460 85

Motor Unit(M851)(SPINDLE) CXB3003

Motor Unit(M854)(CARRIAGE) CXB3004

87 Screw JFZ20P025FMC 88 Motor Unit(M853)(TRAY) CXB4421 89 Screw JFZ20P025FMC 90 Motor Unit(M852)(ELV) CXB3006

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

- CD MECHANISM MODULE SECTION PARTS LIST

CDX-P2050VC,P2050VN,P2050VS

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

Mark No. Description Part No.

CDX-P2050VC,P2050VN,P2050VS

2.4 MAGAZINE ASSY

1 Magazine Assy CXB4028 2 Tray CNV5341 3 Label CRW1396

- MAGAZINE ASSY SECTION PARTS LIST

Mark No. Description Part No.

CDX-P2050VC,P2050VN,P2050VS

1234

3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM

3.1 BLOCK DIAGRAM

CD CORE UNIT

MECHANISM PCB

PICKUP UNIT (SERVICE)

SWITCH PCB

MOTOR PCB

CDX-P2050VC,P2050VN,P2050VS

POWER UNIT

CN303

CDX-P2050VC,P2050VN,P2050VS

1234

VOICE UNIT

PCB ASSY

CDX-P2050VC,P2050VN,P2050VS

CN922

CDX-P2050VC,P2050VN,P2050VS

1234

3.2 OVERALL CONNECTION DIAGRAM

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

PARTS LIST”.

M854

CXB3004

M851

CXB3003

M852

CXB3006

M853

CXB4421

CN801

CN802

MECHANISM PCB

SWITCH PCB

MOTOR PCB

PICKUP UNIT(SERVICE) CXX1285

MOTOR DRIVER

4CH SERVO DRIVER

RF-AMP,SERVO,DSP

CN101

10K

1/2

CDX-P2050VC,P2050VN,P2050VS

CD CORE UNIT

RIVER

2/2

1/2

CDX-P2050VC,P2050VN,P2050VS

1234

2/2

1/2

SYSTEM CONTROLLER

PD5512B

CDX-P2050VC,P2050VN,P2050VS

2/2

R769(1/8W)

R768(1/8W)

POWER UNIT

IP-BUS DRIVER

SRAM

CN701

CN911

CDX-P2050VC,P2050VN,P2050VS

1 RFI 0.5V/div. 0.5µs/div.

Normal mode: play

1 CH1: RFI 1V/div. 2 CH2: MIRR 5V/div.

Test mode: Tracking open

0.5ms/div.

1 CH1: RFI 1V/div. 2 CH2: MIRR 5V/div.

Normal mode: The defect part

passes 800µm

0.5ms/div.

3 CH1: FD 0.5V/div. 4 CH2: FOR 2V/div.

Test mode: No disc, Focus close

0.2s/div.

3 CH1: FD 0.5V/div. 5 CH2: FOK 2V/div.

Normal mode: Focus close

0.2s/div.

6 CH1: FE 0.5V/div. 7 CH2: XSI 2V/div.

Normal mode: Focus close

1ms/div.

REFO

→

8 CH1: TE 0.5V/div. 9 CH2: TD 0.5V/div.

Test mode: 32 tracks jump (REV)

0.5ms/div.

8 CH1: TE 0.5V/div. 9 CH2: TD 0.5V/div.

Test mode: Single jump (REV)

0.5ms/div.

8 CH1: TE 0.5V/div. 9 CH2: TD 0.5V/div.

Test mode: 100 tracks jump (REV)

5ms/div.

6 CH1: FE 0.1V/div. 3 CH2: FD 0.2V/div.

Normal mode: Play

20ms/div.

3 CH1: FD 0.5V/div. 0 CH2: MD 1V/div.

Normal mode: Focus close (12cm)

0.5s/div.

3 CH1: FD 0.5V/div. 0 CH2: MD 1V/div.

Normal mode: Focus close (8cm)

0.5s/div.

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

GND

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

- Waveforms

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

2. Reference voltage REFO:2.5V

REFO

→

REFO

→

REFO

→

REFO

→

CDX-P2050VC,P2050VN,P2050VS

8 CH1: TE 0.2V/div. 9 CH2: TD 0.2V/div.

Normal mode: play

8 CH1: TE 0.5V/div. ! CH2: SD 0.5V/div.

TEST mode:100Tracks jump(FWD)

5ms/div.

0 MD 0.5V/div. 0.1s/div.

Normal mode: Play (12cm)

0 MD 1V/div. 10ms/div.

Long Search (12cm)

@ EFM 1V/div. 5µs/div.

Normal mode: Play

8 CH1: TE 1V/div. # CH2: TEC 1V/div.

Test mode: Focus close

Tracking open

2ms/div.

8 CH1: TE 0.5V/div. 6 CH2: FE 0.5V/div.

Normal mode:

AGC after focus close

0.2s/div.

20ms/div.

% SCKO 2V/div. 1µs/div.

Normal mode: Play

^ DOUT 2V/div. 10µs/div.

Normal mode: Play

& LRCK 2V/div. 20µs/div.

Normal mode: Play

* VD 5V/div. 50ms/div.

Normal mode: No disc

GND

→

REFO

→

REFO

→

GND

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

REFO

→

GND

→

REFO

→

GND

→

REFO

→

GND

→

REFO

→

+ 46 hidden pages