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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 1998
K-ZZB. DEC. 1998 Printed in Japan
ORDER NO.
CRT2268
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P2800
X1M/UC
Service
Manual
KEH-P3850
X1M/ES
KEH-P2800/X1M/UC
NOTE:
- See the separate manual CX-644(CRT1800) for the cassette mechanism description.
- The cassette mechanism assy employed in this model is one of 2M series.
- 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
2. EXPLODED VIEWS AND PARTS LIST ......................2
3. SCHEMATIC DIAGRAM .............................................8
4. PCB CONNECTION DIAGRAM................................18
5. ELECTRICAL PARTS LIST........................................26
6. ADJUSTMENT .........................................................32
7. GENERAL INFORMATION.......................................34
7.1 PARTS ................................................................34
7.1.1 IC ...............................................................34
7.1.2 DISPLAY ...................................................38
7.2 DISASSEMBLY ..................................................39
7.3 BLOCK DIAGRAM .............................................40
8. OPERATIONS AND SPECIFICATIONS ....................41


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2
KEH-P2800,P3850
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
3
6
10
2
9
8
7
5
4
14
1
20
11
15
13
12
18
19
16
17
1. SAFETY INFORMATION
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


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3
KEH-P2800,P3850
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
Part.No
Mark No. Description
KEH-P2800/X1M/UC
KEH-P3850/X1M/ES
1 Cord Assy
CDE5805
CDE5805
2 Spring
CBH1650
CBH1650
3 Screw Assy
CEA2351
CEA2351
4 Screw
CBA1304
CBA1304
*
5 Polyethylene Bag
CEG-127
CEG-127
6 Screw(x4)
CRZ50P090FMC
CRZ50P090FMC
7 Screw(x4)
TRZ50P080FMC
TRZ50P080FMC
*
8 Polyethylene Bag
CEG-158
CEG-158
9 Handle(x2)
CNC5395
CNC5395
10 Bush
CNV3930
CNV3930
11 Polyethylene Bag
CEG1173
CEG-162
12 Carton
CHG3598
CHG3599
13 Contain Box
CHL3598
CHL3599
14 Protector
CHP1622
CHP1622
15 Protector
CHP1623
CHP1623
16 Owner's Manual
CRD2804
CRD2801
17 Owner's Manual
Not used
CRD2802
18 Installation Manual
CRD2805
CRD2803
*
19 Card
ARY1048
Not used
20 Case Assy
CXB3520
CXB3520
- Owner's Manual, Installation Manual
Model
Part No.
Language
KEH-P2800/X1M/UC
CRD2804
English,French,Spanish
CRD2805
English,French,Spanish
KEH-P3850/X1M/ES
CRD2801
English,Spanish,Portuguese(B)
CRD2802
Chinese,Arabic
CRD2803
English,Spanish,Portuguese(B),Chinese,Arabic


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4
KEH-P2800,P3850
2.2 EXTERIOR


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5
KEH-P2800,P3850
1 Screw
BSZ26P050FMC
2 Screw
BSZ30P100FMC
3 Cord Assy
CDE5805
4 Case
CNB2481
5 Panel
CNS5214
6 Screw
BSZ30P055FUC
7 Screw
BSZ30P060FMC
8 Screw
BSZ30P100FMC
9 Holder
CNC5704
10 Cushion
CNM4870
11 Insulator
CNM5025
12 Tuner Amp Unit
See Contrast table(2)
13 Screw
BPZ26P080FMC
14 Screw
BSZ26P080FMC
15 Screw
BSZ26P140FMC
16 FM/AM Tuner Unit
See Contrast table(2)
17 Holder
CNC6554
18 Pin Jack(CN401)
CKB1035
19 Plug(CN601)
CKM1270
20 Connector(CN604)
CKS3362
21 Connector(CN602)
CKS3408
22 Connector(CN603)
CKS3581
23 Antenna Jack(CN301)
CKX1056
24 Panel
CNB2245
25 Holder
CNC5399
26 Holder
CNC6216
27 Heat Sink
CNC6217
28 Holder
CNC6531
29 Holder
CNC6845
30 Chassis Unit
CXA9851
31 Holder Unit
CXB2687
32 Button
CAC4836
33 Spring
CBH1834
34 Spring
CBH1835
35 Spring
CBH1996
36 Bracket
CNC6135
37 Bracket
CNC6791
38 Arm
CNV4692
39 Arm
CNV4693
40 Arm
CNV4728
41 Panel Unit
CXB3715
42 Door
CAT2028
43 Spring
CBH1838
44 Screw
IMS20P030FZK
45 Detach Grille Assy
See Contrast table(2)
46 Screw
BPZ20P120FZK
47 Button(Detachable)
CAC5868
48 Button(Eject)
CAC5870
49 Button(REW)
CAC5872
50 Button(FF)
CAC5874
51 Button(F,A,Cross)
CAC5876
52 Button(-,-)
CAC5878
53 Button(1-6,D,B)
CAC5880
54 Button(+,-)
CAC5882
55 Button(SO/OFF,PGM)
CAC5884
56 Spring
CBH1836
57 Spring
CBH2103
58 Grille
See Contrast table(2)
59 Cover
CNS5209
60 Keyboard Unit
CWM6273
61 LCD(LCD901)
CAW1513
62 Connector(CN901)
CKS3580
63 Holder
CNC8054
64 Connector
CNV5586
65 Rubber
CNV5587
66 Holder
CNV5589
67 Lighting Conductor
CNV5752
68 Case Assy
CXB3520
69 Transistor(Q804)
2SD2396
70 Cassette Mechanism Assy EXK3450
71 Fuse(FU951)(10A)
CEK1136
72 IC(IC501)
TDA7384
*
73 Cord
See Contrast table(2)
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
(2) CONTRAST TABLE
KEH-P2800/X1M/UC and KEH-P3850/X1M/ES are constructed the same except for the following:
Part No.
Mark
No.
Description
KEH-P2800/X1M/UC
KEH-P3850/X1M/ES
12
Tuner Amp Unit
CWM6276
CWM6349
16
FM/AM Tuner Unit
CWE1467
CWE1486
45
Detach Grille Assy
CXB3369
CXB3375
58
Grille
CNS5200
CNS5201
*
73
Cord
CDC1043
Not used