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

PIONEER CORPORATION 4-1, Meguro 1-chome,
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Lon
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 912
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253

PIONEER CORPORATION 2007
DEH-2050MP/XN/ES
Meguro-ku, Tokyo 153-8654, Japan
g Beach, CA 90801-1760, U.S.A.
0 Melsele, Belgium
Alexandra Road, #04-01, Singapore 159936
ORDER NO.

CRT4044
CD RECEIVER

DEH-2050MP/XN/ES
DEH-2050MPG/XN/ES
DEH-2050MPG/XN/ES1

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".
K-ZZU. OCT. 2007 Printed in Japan

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SAFETY INFORMATION

- 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

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.

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.

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.
DEH-2050MP/XN/ES2
1 2 3 4

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9.3 CD MECHANISM MODULE
DEH-2050MP/XN/ES30
1 2 3 4

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CD MECHANISM MODULE SECTION PARTS LIST

Mark No. Description Part No.

1 CD Core Unit(S10.5COMP2) CWX3514

2 Connector(CN101) CKS4182

3 Connector(CN701) CKS4808

4 Screw BMZ20P025FTC

5 Screw BSZ20P040FTC

6 Screw(M2 x 3) CBA1511

7 Screw(M2 x 4) CBA1835

8 Washer CBF1038

9 •••••

10 Spring CBH2609

11 Spring CBH2612

12 Spring CBH2614

13 Spring CBH2616

14 Spring CBH2617

15 Spring CBH2620

16 Spring CBH2855

17 Spring CBH2937

18 Spring CBH2735

19 Spring CBH2854

20 Spring CBH2642

21 Spring CBH2856

22 Spring CBH2857

23 Spring CBH2860

24 Spring CBH2861

25 Spring CBL1686

26 Arm CND1909

27 Frame CND2582

28 Bracket CND2583

29 Arm CND2584

30 Lever CND2585

31 Arm CND2586

32 Bracket CND2587

33 Arm CND2588

34 Lever CND2589

35 Holder CNV7201

36 Gear CNV7207

37 Gear CNV7208

38 Gear CNV7209

39 Gear CNV7210

40 Gear CNV7211

41 Gear CNV7212

42 Rack CNV7214

43 Arm CNV7216

44 Roller CNV7218

45 Gear CNV7219

46 Guide CNV7361

47 Gear CNV7595

48 Guide CNV7799

49 Arm CNV7805

50 Rack CNV8342

51 Roller CNV8343

52 Holder CNV8344

53 Arm CNV8345

54 Guide CNV8347

55 Arm CNV8348

56 Arm CNV8349

57 Arm CNV8350

58 Clamper CNV8365

59 Arm CNV8386

60 Guide CNV8396

61 Arm CNV8413

62 Collar CNV8938

63 Motor Unit(M2) CXC4026

64 Arm Unit CXC4027

65 Chassis Unit CXC4028

66 Gear Unit CXC4029

67 Frame Unit CXC4031

68 Motor Unit(M1) CXC7134

69 Screw Unit CXC6359

70 Screw JFZ20P020FTC

71 Screw JGZ17P022FTC

72 Washer YE20FTC

73 Pickup Unit(P10.5)(Service) CXX1942

74 Screw IMS26P030FTC

Mark No. Description Part No.
DEH-2050MP/XN/ES 31
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IC 1802 (A,10,161) Remote IC GP1UX51RK
D 1803 (A,14,42) LED CL-195PG-CD
D 1805 (A,15,23) LED CL-195PG-CD
D 1806 (A,12,11) LED CL-195PG-CD

D 1807 (A,41,42) LED CL-195PG-CD
D 1808 (A,28,28) LED CL-195PG-CD
D 1809 (A,35,20) LED CL-195PG-CD
D 1810 (A,22,7) LED CL-195PG-CD
D 1811 (A,36,63) LED CL-195PG-CD

D 1812 (A,41,84) LED CL-195PG-CD
D 1813 (A,41,97) LED CL-195PG-CD
D 1814 (A,41,111) LED CL-195PG-CD
D 1815 (A,40,124) LED CL-195PG-CD
D 1816 (A,39,138) LED CL-195PG-CD

D 1817 (A,38,151) LED CL-195PG-CD
D 1818 (A,6,149) LED CL-195PG-CD
D 1819 (A,28,55) LED CL-195PG-CD
D 1821 (A,15,61) LED CL-195PG-CD
D 1822 (A,24,74) White LED NESW505C-5273

D 1826 (B,26,151) Diode MALS068X
D 1827 (B,31,148) Diode MALS068X
D 1828 (B,28,151) Diode MALS068X
X 1801 (B,31,106) Ceramic Resonator 5.00 MHz CSS1731
S 1833 (A,28,42) Rotary Switch YSD5020

LCD1801 (A,15,149) LCD CAW1930

RESISTORS

R 1801 (B,29,89) RS1/16S222J
R 1802 (B,27,93) RS1/16S222J
R 1803 (B,19,68) RS1/4SA681J
R 1804 (B,24,68) RS1/4SA681J
R 1805 (B,36,96) RS1/4SA681J

R 1806 (B,36,100) RS1/4SA471J
R 1807 (B,22,68) RS1/4SA471J
R 1809 (B,27,50) RS1/16S473J
R 1810 (B,26,75) RS1/4SA821J
R 1833 (B,23,145) RS1/16S2R2J

R 1835 (B,23,150) RS1/16S101J
R 1836 (B,18,154) RS1/16S103J
R 1837 (B,31,146) RS1/16S101J
R 1838 (B,25,150) RS1/16S101J

CAPACITORS

C 1801 (B,28,133) CKSRYB105K10
C 1803 (B,18,152) CKSYF106Z10
C 1810 (B,23,152) CKSRYB472K50
C 1811 (B,30,152) CKSRYB472K50

C
Unit Number : CWX3514
Unit Name : CD Core

Unit(S10.5COMP2)

MISCELLANEOUS

IC 201 (A,34,46) IC PE5547A
IC 301 (A,27,14) IC BA5839FP
Q 101 (B,56,72) Transistor 2SA1577
Q 102 (B,47,57) Chip Transistor 2SB1689

Circuit Symbol and No. Part No.
X 201 (A,23,35) Ceramic Resonator 16.934 MHz CSS1603
S 901 (A,53,37) Switch(HOME) CSN1067
S 903 (B,19,58) Switch(DSCSNS) CSN1067
S 904 (B,38,67) Switch(12EJ) CSN1068
S 905 (B,24,68) Switch(8EJ) CSN1068

RESISTORS

R 101 (B,60,73) RS1/10SR2R4J
R 102 (B,59,71) RS1/10SR2R4J
R 103 (B,60,71) RS1/10SR2R7J
R 104 (B,52,69) RS1/16SS222J
R 105 (B,41,57) RS1/16SS102J

R 107 (B,41,59) RS1/16SS105J
R 202 (B,32,62) RS1/16SS473J
R 203 (B,42,45) RS1/16S473J
R 204 (A,25,61) RS1/16SS221J

R 206 (B,26,53) RS1/16SS104J
R 210 (B,13,32) RS1/16SS102J
R 214 (B,36,34) RS1/16SS472J
R 216 (B,47,49) RS1/16SS472J
R 221 (B,36,32) RS1/16SS103J

R 222 (B,35,32) RS1/16SS103J
R 225 (A,49,49) RS1/16SS103J
R 226 (A,49,50) RS1/16SS393J
R 227 (B,45,51) RS1/16SS562J
R 228 (B,42,53) RS1/16SS122J

R 229 (B,44,53) RS1/16SS472J
R 230 (B,21,28) RS1/16SS0R0J
R 232 (B,43,51) RS1/16SS122J
R 233 (B,29,52) RS1/16SS103J
R 234 (B,30,61) RS1/16SS473J

R 235 (A,25,63) RS1/16SS473J
R 239 (B,26,48) RS1/16SS473J
R 240 (B,10,31) RS1/16SS473J
R 241 (B,9,32) RS1/16SS103J

R 244 (A,20,52) RS1/16SS473J
R 255 (A,27,63) RAB4CQ104J
R 307 (A,34,19) RS1/16SS183J
R 308 (A,38,20) RS1/16SS183J
R 309 (A,35,21) RS1/16SS183J

R 310 (A,38,21) RS1/16SS183J
R 601 (B,28,38) RS1/16SS0R0J
R 602 (B,27,41) RS1/16SS0R0J
R 606 (B,23,41) RS1/16SS0R0J
R 701 (B,16,35) RS1/16SS221J

R 702 (A,23,55) RS1/16SS221J

CAPACITORS

C 106 (B,56,69) CKSQYB475K6R3
C 202 (A,27,57) CKSSYB104K10
C 204 (A,24,63) CKSSYB103K16
C 205 (B,23,43) CKSQYB475K6R3

C 206 (A,22,39) CKSSYB104K10
C 207 (A,24,37) CKSRYB104K16
C 209 (B,33,40) CEVW220M6R3
C 210 (B,29,42) CKSSYB104K10
C 211 (A,27,34) CKSSYB104K10

C 212 (B,29,32) CKSRYB104K16
C 213 (A,44,37) CKSSYB104K10

Circuit Symbol and No. Part No.
DEH-2050MP/XN/ES 59
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C 214 (A,28,33) CKSSYB104K10
C 216 (A,50,51) CKSSYB332K50
C 217 (A,46,51) CKSSYB104K10

C 218 (A,49,51) CKSSYB473K10
C 219 (A,45,53) CKSSYB104K10
C 220 (A,46,53) CKSSYB182K50
C 221 (A,44,53) CKSSYB104K10
C 222 (B,43,53) CCSSCH560J50

C 223 (B,45,53) CCSSCH4R0C50
C 224 (A,43,55) CKSSYB104K10
C 226 (A,40,58) CCSSCH680J50
C 227 (A,40,60) CCSSCH470J50
C 228 (A,39,62) CKSSYB103K16

C 229 (B,49,59) CKSSYB104K10
C 236 (A,42,61) CKSSYB104K10
C 239 (B,44,51) CCSSCH220J50
C 240 (A,35,61) CKSSYB104K10
C 250 (B,36,30) CKSSYB102K50

C 251 (B,33,29) CKSSYB102K50
C 303 (A,35,19) CKSSYB472K25
C 304 (A,34,21) CKSSYB223K16
C 307 (B,25,9) CKSRYB104K16
C 308 (B,10,27) CKSRYB105K10

C 703 (B,11,37) CCSSCH101J50
C 704 (B,8,36) CKSSYB102K50
C 711 (A,25,26) CKSSYB104K10

Miscellaneous Parts List

Pickup Unit(P10.5)(Service) CXX1942
M 1 Motor Unit(SPINDLE) CXC7134
M 2 Motor Unit(LOADING/CARRIAGE) CXC4026

Circuit Symbol and No. Part No.
DEH-2050MP/XN/ES60
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