PIONEER KEH-P7850X1N Service Manual

Cover page of PIONEER KEH-P7850X1N Service Manual

Service Manual for PIONEER KEH-P7850X1N, downloadable as a PDF file.

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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-ZZS. NOV. 1998 Printed in Japan
ORDER NO.
CRT2307
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P7850
X1N/ES
Service
Manual
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.
CONTENTS
1. SAFETY INFORMATION ...........................................2
2. EXPLODED VIEWS AND PARTS LIST......................2
3. SCHEMATIC DIAGRAM ..........................................10
4. PCB CONNECTION DIAGRAM ...............................20
5. ELECTRICAL PARTS LIST .......................................30
6. ADJUSTMENT ........................................................36
7. GENERAL INFORMATION ......................................38
7.1 PARTS.................................................................38
7.1.1 IC ...............................................................38
7.1.2 DISPLAY ...................................................43
7.2 DIAGNOSIS........................................................44
7.2.1 DISASSEMBLY .........................................44
7.2.2 TEST MODE .............................................45
7.3 BLOCK DIAGRAM..............................................48
8. OPERATIONS AND SPECIFICATIONS ...................49
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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-ZZS. NOV. 1998 Printed in Japan
ORDER NO.
CRT2307
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P7850
X1N/ES
Service
Manual
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.
CONTENTS
1. SAFETY INFORMATION ...........................................2
2. EXPLODED VIEWS AND PARTS LIST......................2
3. SCHEMATIC DIAGRAM ..........................................10
4. PCB CONNECTION DIAGRAM ...............................20
5. ELECTRICAL PARTS LIST .......................................30
6. ADJUSTMENT ........................................................36
7. GENERAL INFORMATION ......................................38
7.1 PARTS.................................................................38
7.1.1 IC ...............................................................38
7.1.2 DISPLAY ...................................................43
7.2 DIAGNOSIS........................................................44
7.2.1 DISASSEMBLY .........................................44
7.2.2 TEST MODE .............................................45
7.3 BLOCK DIAGRAM..............................................48
8. OPERATIONS AND SPECIFICATIONS ...................49
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2
KEH-P7850
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
20
19
15
12
16
17
4
7
11
3
10
9
8
6
5
2
14
18
13
1
1. SAFETY INFORMATION
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.
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3
KEH-P7850
1 Cord Assy
CDE5758
*
2 Accessory Assy
CEA2350-/N
3 Spring
CBH1650
4 Screw Assy
CEA2351
5 Screw
CBA1304
*
6 Polyethylene Bag
CEG-127
7 Screw
CRZ50P090FMC
8 Screw
TRZ50P080FMC
*
9 Polyethylene Bag
CEG-158
10 Handle
CNC5395
11 Bush
CNV3930
12 Polyethylene Bag
CEG-162
13 Battery
CEX1030
14 Carton
CHG3552
15 Contain Box
CHL3552
16 Protector
CHP2101
17 Protector
CHP2102
18 Remote Control Assy
CXB3456
19 Case
CXB3520
20-1 Owner's Manual
CRD2762
20-2 Owner's Manual
CRD2763
20-3 Installation Manual
CRD2764
Mark No. Description
Part No.
Mark No. Description
Part No.
- 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.
- Owner's Manual, Installation Manual
Model
Part No.
Language
KEH-P7850/X1N/ES
CRD2762
English, Spanish, Portuguese(B)
CRD2763
Chinese, Arabic
CRD2764
English, Spanish,
Portuguese(B), Chinese, Arabic
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4
KEH-P7850
2.2 EXTERIOR
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5
KEH-P7850
1 Screw
BMZ30P040FMC
2 Screw
BSZ26P050FMC
3 Screw
BSZ30P050FMC
4 Cord Assy
CDE5758
5 Fuse(10A)
CEK1136
6 Case
CNB2350
7 Holder
CNC6798
8 Shield
CNC7365
9 Spacer
CNM5488
10 Panel
CNS5148
11 Cap
CNV2680
12 Screw
BSZ30P050FMC
13 Screw
BSZ30P200FMC
14 Cord
CDE5176
15
·····
16 Holder
CNC5704
17 Cushion
CNM4870
18 Insulator
CNM6275
19 Insulator
CNV5793
20 Tuner Amp Unit
CWM6147
21 Screw
BMZ26P040FMC
22 Screw
BPZ26P060FMC
23 Screw
BSZ26P060FMC
24 Screw
BSZ26P160FMC
25
·····
26 Pin Jack(CN301)
CKB1028
27 Terminal(CN403)
CKF1059
28 Plug(CN951)
CKM1231
29 Plug(CN604)
CKS-783
30 Connector(CN601)
CKS1499
31 Connector(CN751)
CKS3408
32 Connector(CN602)
CKS3568
33
·····
34 Connector(CN302)
CKS3598
35 Antenna Jack(CN402)
CKX1056
36 Panel
CNB2358
37 Heat Sink
CNC7991
38 Holder
CNC7996
39 Holder
CNC7997
40 Case
CNC7998
41 Case
CNC8254
42 Holder
CNC8255
43 Case
CNC8350
44 Case
CNC8351
45 Insulator
CNM6099
46 Insulator
CNM6190
47 Insulator
CNM6257
48 Heat Sink
CNR1505
49 Insulator
CNV5792
50 FM/AM Tuner Unit
CWE1486
51 Holder
CNC6554
52 Chassis Unit
CXB3048
53 Screw
ISS26P055FUC
54 Detach Grille Assy
CXB3439
55 Screw
BPZ20P060FMC
56 Screw
BPZ20P080FZK
57 Button(OPEN)
CAC5804
58 Button(EJECT)
CAC5805
59 Button(SOURCE)
CAC5806
60 Button(BAND)
CAC5807
61 Button
CAC5808
62 Button(DISP)
CAC5809
63 Button(1-6)
CAC5922
64 Spring
CBH2205
65 Cover
CNS5146
66 Holder
CNV5537
67 Keyboard Unit
CWM6061
68 LCD(LCD901)
CAW1502
69 EL
CEL1587
70 Connector(CN901)
CKS2733
71 Holder
CNC7992
72 Tape
CNM6348
73 Spacer
CNM6347
74 Connector
CNV5536
75 Grille Unit
CXB3483
76 Screw
BPZ20P060FMC
77 Screw
CBA1082
78 Screw
CBA1176
79 Washer
CBF1001
80 Spring
CBH2063
81 Spring
CBH2204
82 Cord
CDE5800
83 Connector
CKS2780
84 Roller
CLA3386
85 Cushion
CNM5486
86 Sheet
CNM6109
87 PCB
CNP5430
88 PCB
CNP5444
89 Panel
CNS5147
90 Holder
CNS5157
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description
Part No.
Mark No. Description
Part No.

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