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ORDER NO
CRT2763
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER



KEH-P4020 XM/UC

KEH-P4022 XM/EE

KEH-P4025 XM/ES



- This service manual should be used together with the following manual(s):
Model No. Order No. Mech. Module Remarks
CX-1011 CRT2406 3L Cassette Mech. Module:Mech.Description, Disassembly, Adjustment

NOTE:
- This service manual does not describe the CD test mode.
For the operations in the CD test mode, refer to the CD player's Service manual.




CONTENTS
1. SAFETY INFORMATION 2 7. GENERAL INFORMATION 33
2. EXPLODED VIEWS AND PARTS LIST 2 7.1 DIAGNOSIS 33
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 8 7.1.1 DISASSEMBLY 33
4. PCB CONNECTION DIAGRAM 18 7.1.2 CONNECTOR FUNCTION DESCRIPTION 34
5. ELECTRICAL PARTS LIST 27 7.2 PARTS 35
6.ADJUSTMENT 32 7.2.1 IC 35
7.2.2 DISPLAY 40
7.3 OPERATIONAL FLOW CHART 41
8. OPERATIONS AND SPECIFICATIONS 42


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 2001
K-ZZT. NOV. 2001 Printed in Japan
1. SAFETY INFORMATION
- KEH-P4020/XM/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 ar
California to caruse cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 - Proposition 65



2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING




2
NOTE

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

- PACKING SECTION PARTS LIST
KEH-P4020/XM/UC
Mark No. Description Part No. Mark No. Description Part No.
1 Carton CZH5581 * 11 Polyethylene Bag CZE2908
2 Owner's Manual CZR2944 12 Bush CNV3930
3 Installation Manual CZR2945 13 Spring CBH1650
* 4 Card ARY1048 14 Handle CNC5395
5 Case Assy CXB3520 15 Holder CNC9450

6 Cord Assy CZD2976 * 16 Screw Assy CZE2957
7 Protector CZH5591 17 Screw CBA1002
8 Protector CZH5592 18 Screw BPZ20P060FZK
9 Polyethylene Bag CEG1173 19 Screw TRZ50P080FMC
* 10 Accessory Assy CZE2956 20 Screw CRZ50P080FMC

* 21 Polyethylene Bag CEG-127
22 Contain Box CZH5582

KEH-P4022/XM/EE
Mark No. Description Part No. Mark No. Description Part No.
1 Carton CZH5585 * 11 Polyethylene Bag CZE2908
2 Owner's Manual CZR2948 12 Bush CNV3930
3 Installation Manual CZR2949 13 .....
4 Warranty Card CRY1157 14 Handle CNC5395
5 Case Assy CXB3520 15 Holder CNC9450

6 Cord Assy CZD2976 16 .....
7 Protector CZH5591 17 Screw CBA1002
8 Protector CZH5592 18 Screw BPZ20P060FZK
9 Polyethylene Bag CZE2903 19 .....
* 10 Accessory Assy CEA3062 20 .....

* 21 .....
22 Contain Box CZH5586
KEH-P4025/XM/ES
Mark No. Description Part No. Mark No. Description Part No.
1 Carton CZH5583 * 11 Polyethylene Bag CZE2908
2 Owner's Manual CZR2946 12 Bush CNV3930
3 Installation Manual CZR2947 13 Spring CBH1650
4 ..... 14 Handle CNC5395
5 Case Assy CXB3520 15 .....

6 Cord Assy CZD2976 16 Screw Assy CZE2953
7 Protector CZH5591 17 Screw CBA1002
8 Protector CZH5592 18 .....
9 Polyethylene Bag CZE2903 19 Screw TRZ50P080FMC
* 10 Accessory Assy CZE2955 20 Screw CRZ50P080FMC

* 21 Polyethylene Bag CEG-127
22 Contain Box CZH5584
Owner's Manual,Installation Manual
Part No. Language
CZR2944 English, French, Spanish
CZR2945 English, French, Spanish
CZR2946 English, Spanish, Portuguese(B), China, Arabic
CZR2947 English, Spanish, Portuguese(B), China, Arabic
CZR2948 English, Russian
CZR2949 English, Russian




3
2.2 EXTERIOR




4
(1)EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Case CZN6794 41 Screw IMS20P045FZK
* 2 Label CZA5543 42 Screw(M2x2) CBA1176
* 3 Grille Unit See Contrast table(2) 43 Damper Unit CXB5070
4 Cover CZN6804 44 Washer CBF1039
5 Holder CNV6506 45 Spring CBH2429

6 Spring CBH2431 46 Arm CZN6827
7 Spring CBH2430 47 Holder Unit CXB6356
8 Holder CNV6505 48 Clutch Unit CXB6358
9 Screw BPZ20P100FZK 49 Washer CBF1038
10 Keyboard Unit See Contrast table(2)
50 Gear CNV6507
11 Connector(CN900) CZK2948 51 Spring CBH2428
12 Sheet CZN6808 52 Panel CNS6332
13 Rubber CZN6806 53 Cassette Mechanism Module EXK4080
14 Contact CZN6807 54 Screw BSZ26P060FMC
15 Lighting Conductor CZN6809 55 Tuner Amp Unit See Contrast table(2)

16 Light Plate CZN6810 56 Screw BSZ26P100FMC
17 LCD(LCD900) CZA5561 57 Heat Sink CZN6798
18 Holder CZN6811 58 IC(IC500) See Contrast table(2)
19 Grille Assy CZX5530 59 Panel CZN6795
20 Button(VOL) CZA5544 60 Transistor(Q702) 2SD2396

21 Button(LOCAL) CZA5550 61 Screw BPZ26P100FZK
22 Button(PRESET) CZA5551 62 Screw ISS26P055FUC
23 Button(EQ) CZA5545 63 Terminal(CN101) CKF1059
24 Button(BSM) CZA5549 64 Connector(CN600) CKS3408
25 Spring CZB2980 65 Choke Coil(L700) CTH1221

26 Button(RELEASE) CZA5552 66 Fuse(10A) CEK1208
27 Button(CROSS) CZA5548 67 Connector(CN200) CZK2943
28 Button(LOUD) CZA5546 68 Pin Jack(CN700) CKB1041
29 Sheet CZN6833 69 Antenna Jack(CN100) CKX1056
30 Plate Assy CZX5525 70 Connector(CN800) CZK2949

31 Plate Assy See Contrast table(2) 71 Connector(CN300) CKS3568
32 Panel PCB Unit CZW5526 72 Plate CZN6730
33 Connector(CN850) CZK2950 73 FM/AM Tuner Unit(TU100) CZW5533
34 Connector(CN851) CZK2947 74 Insulator CZN6801
35 Holder CZN6799 75 Chassis Unit CZX5515

36 Holder Unit CXB6357 76 Screw BMZ30P040FZK
37 Spring CZB2981 77 Code Assy CZD2976
38 Door CAT2109 * 78 Holder CNC9131
39 Button(EJECT) CZA5553
40 Panel Assy CZX5519
(2)CONTRAST TABLE
KEH-P4020/XM/UC,KEH-P4022/XM/EE and KEH-P4025/XM/ES have the same cuntruction except for the following:

Part No.
Mark No. Symbol and Description KEH-P4020/XM/UC KEH-P4022/XM/EE KEH-P4025/XM/ES
* 3 Grille Unit CZX5533 CZX5535 CZX5534
10 Keyboard Unit CZW5525 CZW5525 CZW5528
31 Plate Assy CZX5521 CZX5523 CZX5522
55 Tuner Amp Unit CZW5524 CZW5529 CZW5527
58 IC(IC500) TA 8 2 7 7 H TA 8 2 7 7 H PA L 0 0 7 A




5
2.3 CASSETTE MECHANISM MODULE




6
- CASSETTE MECHANISM MODULE SECTION PARTS LIST

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

1 Screw BSZ20P040FMC 31 Lever ENV1551
2 Washer CBF1037 32 Flywheel ENV1554
3 Washer CBG1003 33 PCB ENP1196
4 Screw EBA1028 34 Switch(S101,102) ESG1007
5 Screw CBA1037 35 Deck Unit EWM1042

6 Spring EBH1653 36 Plug(CN251) CKS3540
7 Spring EBH1624 37 Gathering PCB ENX1064
8 Spring EBH1641 38 Motor Unit(M1) EXA1621
9 Spring EBH1626 39 Motor EXM1028
10 Spring EBH1627 40 Head Assy(HD1) EXA1589

11 Spring EBH1649 41 Motor Unit(M2) EXA1580
12 Cord EDD1024 42 Screw BMZ20P022FMC
13 Photo-reflector(Q101) EGN1004 43 Bracket ENC1528
14 Arm ENC1526 44 Chassis Unit EXA1637
15 Lever ENC1544 45 Pinch Holder Unit EXA1584

16 Lever ENC1543 46 Pinch Roller ENV1518
17 Arm ENC1532 47 Pinch Holder Unit EXA1583
18 Frame ENC1533 48 Pinch Roller ENV1518
19 Holder ENC1534 49 Reel Unit EXA1625
20 Gear ENC1535 50 Head Base Unit EXA1611

21 Arm ENC1550 51 Lever Unit EXA1631
22 Roller ENR1040 52 Gear Unit EXA1632
23 Belt ENT1027 53 Motor Unit(Service) EXX1055
24 Collar ENV1508 54 Washer HBF-179
25 Arm ENV1539 55