background image
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. 501 Orchard Road, #10-00, Wheelock Place, Singapore 238880
C PIONEER ELECTRONIC CORPORATION 1998
K-ZEM. FEB. 1998 Printed in Japan
ORDER NO.
CRT2169
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
Service
Manual
KEH-P424
X1M/UC
NOTE:
- See the separate manual CX-631(CRT1640) for the cassette mechanism description.
- The cassette mechanism assy employed in this model is one of 2L series.
- Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
"Dolby" and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.
- 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.
KEH-P4700
X1M/UC
· KEH-P424/X1M/UC
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 .......................................28
6. ADJUSTMENT ........................................................35
7. GENERAL INFORMATION ......................................37
7.1 PARTS.................................................................37
7.1.1 IC ...............................................................37
7.1.2 DISPLAY ...................................................41
7.2 DISASSEMBLY ..................................................42
7.3 BLOCK DIAGRAM..............................................43
8. OPERATIONS AND SPECIFICATIONS ...................44
KEH-P4750
X1M/ES


background image
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
2
KEH-P424,P4700,P4750
5
10
16
4
15
14
13
12
9
6
8
11
7
22
3
2
1
17,18,19,
20,21
Fig. 1
1. SAFETY INFORMATION
UC model
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 mot risk trying to do so
and refer the repair to a qualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive
toxicant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section
25249.5). When servicing or handling circuit boards and other components which contain lead in solder, avoid
unprotected skin contact with the solder. Also, when soldering do not inhale any smoke or fumes produced.


background image
3
KEH-P424,P4700,P4750
NOTE:
- Parts marked by "*"and
can not be supplied.
- Screws adjacent to
mark on the product are used for disassembly.
- PACKING SECTION PARTS LIST
Part No.
Mark No. Description
KEH-P424/X1M/UC
KEH-P4700/X1M/UC
KEH-P4750/X1M/ES
1 Cord Assy
CDE5496
CDE5496
CDE5496
*
2 Accessory Assy
CEA2350
CEA2350
CEA2350
3 Spring
CBH1650
CBH1650
CBH1650
4 Screw Assy
CEA2351
CEA2351
CEA2351
5 Screw
CBA1304
CBA1304
CBA1304
*
6 Polyethylene Bag
CEG-127
CEG-127
CEG-127
7 Screw(x4)
CRZ50P090FMC
CRZ50P090FMC
CRZ50P090FMC
8 Screw(x4)
TRZ50P080FMC
TRZ50P080FMC
TRZ50P080FMC
*
9 Polyethylene Bag
CEG-158
CEG-158
CEG-158
10 Handle(x2)
CNC5395
CNC5395
CNC5395
11 Bush
CNV3930
CNV3930
CNV3930
12 Polyethylene Bag
CEG1173
CEG1173
CEG1-162
13 Carton
CHG3471
CHG3470
CHG3472
14 Contain Box
CHL3471
CHL3470
CHL3472
15 Protector
CHP2021
CHP2021
CHP2021
16 Protector
CHP2022
CHP2022
CHP2022
17 Owner's Manual
CRD2585
CRD2587
CRD2596
18 Installation Manual
CRD2586
CRD2588
CRD2598
*
19 Warranty Card
CRY1070
Not used
Not used
*
20 Card
Not used
ARY1048
Not used
21 Owner's Manual
Not used
Not used
CRD2597
22 Case Assy
CXB1063
CXB1063
CXB1063
- Owner's Manual, Installation Manual
Model
Part No.
Language
KEH-P424/X1M/UC
CRD2585
English, French
CRD2586
English, French
KEH-P4700/X1M/UC
CRD2587
English, French, Spanish
CRD2588
English, French, Spanish
KEH-P4750/X1M/ES
CRD2596
English, Spanish, Portuguese
CRD2597
Chinese, Arabic
CRD2598
English, Spanish,
Portuguese, Chinese, Arabic


background image
4
KEH-P424,P4700,P4750
Fig. 2
2.2 EXTERIOR


background image
5
KEH-P424,P4700,P4750
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.
1 Screw
BSZ26P050FMC
2 Screw
BSZ30P060FMC
3 Cord Assy
CDE5496
4 Spring
CBH1650
5 Screw
CBA1304
6 Handle
CNC5395
7 Bush
CNV3930
8 Fuse
CEK1136
9 Case
CNB2283
10 Holder
CNC6798
11 Panel
CNS4200
12 Screw
BMZ30P100FMC
13 Screw
BSZ30P055FUC
14 Screw
BSZ30P060FMC
15 Holder Unit
CXB2687
16 Cushion
CNM4870
17 Insulator
CNM5571
18 Tuner Amp Unit
See Contrast table(2)
19 Screw
BPZ26P080FMC
20 Screw
BSZ26P080FMC
21 Screw
BSZ26P140FMC
22 Cord Assy(CN603)
See Contrast table(2)
23 FM/AM Tuner Unit
See Contrast table(2)
24 Holder
CNC6554
25 Pin Jack(CN301)
CKB1028
26 Plug(CN951)
CKM1270
27 Connector(CN751)
CKS3408
28 Connector(CN602)
CKS3568
29 Connector(CN601)
CKS3581
30 Antenna Jack(CN402)
CKX1056
31 Panel
CNB2256
32 Holder
CNC5399
33 Holder
CNC6531
34 Holder
CNC6674
35 Holder
CNC6845
36 Heat Sink
CNR1426
37 Chassis Unit
CXB2347
38 Case Assy
CXB1063
39 Button
CAC4836
40 Spring
CBH1834
41 Spring
CBH1835
42 Spring
CBH1996
43 Bracket
CNC6135
44 Bracket
CNC6791
45 Arm
CNV4692
46 Arm
CNV4693
47 Arm
CNV4728
48 Panel Unit
See Contrast table(2)
49 Door
CAT1947
50 Spring
CBH1838
51 Screw
IMS20P030FZK
52 Detach Grille Assy
See Contrast table(2)
53 Screw
BPZ20P100FZK
54 Button(
)
CAC5430
55 Button(
,
)
CAC5431
56 Button(SOURCE)
CAC5433
57 Button(+,­)
CAC5435
58 Button(BAND,F,A)
CAC5437
59 Button(1,2,3,4,5,6)
CAC5439
60 Button(D)
CAC5441
61 Button(LD/CLK,P,
)
CAC5542
62 Spring
CBH2103
63 Spacer
CNM5572
64 Sheet
CNM5897
65 Cover
CNS4775
66 Lighting Conductor
CNV5195
67 Keyboard Unit
CWM5801
68 LCD(LCD901)
CAW1477
69 Connector(CN901)
CKS3580
70 Holder
CNC7479
71 Sheet
CNM5726
72 Sheet
CNM5727
73 Sheet
CNM5728
74 Lighting Conductor
CNV5196
75 Housing
CNV5197
76 Connector
CNV5205
77 Grille Unit
See Contrast table(2)
78 Cassette Mechanism ModuleEXK3615
79 Transistor(Q951)
2SD2396
80 IC(IC301)
See Contrast table(2)
81 LED(D903 -- 905)
NSPWF50SB
,
,