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Service KEH-P4850/X1M/ES
Manual ORDER NO.
CRT2261
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P4800 X1M/UC
KEH-P4850 X1M/ES
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.
- 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.......................................41
2. EXPLODED VIEWS AND PARTS LIST ......................2 7.1 PARTS ................................................................41
3. SCHEMATIC DIAGRAM.............................................8 7.1.1 IC ...............................................................41
4. PCB CONNECTION DIAGRAM................................22 7.1.2 DISPLAY ...................................................45
5. ELECTRICAL PARTS LIST........................................32 7.2 DISASSEMBLY ...................................................46
6. ADJUSTMENT .........................................................39 7.3 BLOCK DIAGRAM ..............................................47
8. OPERATIONS AND SPECIFICATIONS ....................48
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-ZZU. OCT. 1998 Printed in Japan
KEH-P4800,P4850
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 not 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.
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
1
7 4
8
5
6
10 13
3
11
9
16 17
2
15
12
14
2
KEH-P4800,P4850
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-P4800/X1M/UC KEH-P4850/X1M/ES
* 1-1 Card ARY1048 Not used
1-2 Owner's Manual CRD2783 CRD2785
1-3 Installation Manual CRD2784 CRD2787
1-4 Owner's Manual Not used CRD2786
2 Cord Assy CDE5798 CDE5798
3 Spring CBH1650 CBH1650
4 Screw Assy CEA2351 CEA2351
5 Screw CBA1304 CBA1304
* 6 Polyethylene Bag CEG-127 CEG-127
7 Screw CRZ50P090FMC CRZ50P090FMC
8 Screw TRZ50P080FMC TRZ50P080FMC
* 9 Polyethylene Bag CEG-158 CEG-158
10 Handle CNC5395 CNC5395
11 Bush CNV3930 CNV3930
12 Polyethylene Bag CEG1173 CEG-162
13 Carton CHG3570 CHG3571
14 Contain Box CHL3570 CHL3571
15 Protector CHP2101 CHP2101
16 Protector CHP2102 CHP2102
17 Case Assy CXB3520 CXB3520
- Owner's Manual, Installation Manual
Model Part No. Language
KEH-P4800/X1M/UC CRD2783 English, French, Spanish
CRD2784 English, French, Spanish
KEH-P4850/X1M/ES CRD2785 English, Spanish, Portuguese(B)
CRD2786 Chinese, Arabic
CRD2787 English, Spanish,
Portuguese(B), Chinese, Arabic
3
KEH-P4800,P4850
2.2 EXTERIOR
4
KEH-P4800,P4850
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ26P050FMC 36 Button(1-6) CAC5794
2 Screw BSZ30P050FMC 37 Button(-) CAC5930
3 Cord Assy CDE5798 38 Button(EQ) CAC6135
4 Fuse(10A) CEK1136 39 Button(+) CAC5783
5 Case CNB2350 40 Button(Eject) CAC5793
6 Panel CNS5132 41 Button(Display) CAC5788
7 Screw BSZ30P050FMC 42 Button(Cross) CAC5786
8 Screw BSZ30P200FMC 43 Button(A,B) CAC5787
9 Holder CNC5704 44 Spring CBH2103
10 Cushion CNM5210 45 Cover CNS5130
11 Insulator CNM5963 46 Housing CNV5528
12 Tuner Amp Unit See Contrast table(2) 47 Keyboard Unit See Contrast table(2)
13 Screw BPZ26P080FMC 48 LCD(LCD1901) CAW1543
14 Screw BSZ26P080FMC 49 Connector(CN1901) CKS3580
15 Screw BSZ26P160FMC 50 Holder CNC7981
16 FM/AM Tuner Unit See Contrast table(2) 51 Sheet CNM5941
17 Holder CNC6554 52 Lighting Conductor CNV5527
18 Pin Jack(CN301) CKB1035 53 Connector CNV5531
19 Plug(CN603) CKM1270 54 Grille Unit See Contrast table(2)
20 Connector(CN701) CKS3408 55 Button CAC4836
21 Connector(CN602) CKS3568 56 Spring CBH1834
22 Connector(CN601) CKS3581 57 Spring CBH1835
23 Antenna Jack(CN402) CKX1056 58 Spring CBH2182
24 Panel CNB2343 59 Bracket CNC6135
25 Holder CNC5399 60 Bracket CNC6791
26 Holder CNC6845 61 Arm CNV4692
27 Holder CNC7996 62 Arm CNV4693
28 Heat Sink CNR1505 63 Arm CNV4728
29 Chassis Unit CXB3012 64 Panel Unit CXB3019
30 Screw ISS26P055FUC 65 Door CAT2028
31 Holder Unit CXB2687 66 Spring CBH1838
32 Detach Grille Assy See Contrast table(2) 67 Screw IMS20P030FZK
33 Screw BPZ20P060FMC 68 Case Assy CXB3520
34 Screw BPZ20P100FZK 69 Cassette Mechanism Module EXK3695
35 Button(Detach) CAC5789
70 IC(IC302) TDA7384
71 Transistor(Q904) 2SD2396
5
KEH-P4800,P4850
(2)CONTRAST TABLE
KEH-P4800/X1M/UC and KEH-P4850/X1M/ES have
the same construction except for the following:
Part No.
Mark No. Description KEH-P4800/X1M/UC KEH-P4850/X1M/ES
12 Tuner Amp Unit CWM6248 CWM6249
16 FM/AM Tuner Unit CWE1467 CWE1486
32 Detach Grille Assy CXB3322 CXB3323
47 Keyboard Unit CWM6259 CWM6260
54 Grille Unit CXB4065 CXB4066
2.3 CASSETTE MECHANISM MODULE
6
KEH-P4800,P4850
- CASSETTE MECHANISM MODULE SECTION PARTS LIST
Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ20P040FMC 46 Pinch Holder ENV1486
2 Washer CBF1037 47 Reel Unit EXA1543
3 Washer CBF1038 48 Head Base Unit EXA1457
4 Washer CBG1003 49 Lever Unit EXA1438
5 Deck Unit EWM1021 50 Gear Unit EXA1574
6 Screw EBA1028 51 Frame Unit EXA1458
7 Screw EBA1037 52 Lever Unit EXA1439
8 Spring EBH1531 53 Head Assy(HD1) EXA1506
9 Spring EBH1575 54 Motor Unit(M1) EXA1490
10 Plug(CN251) CKS3540 55 Washer HBF-179
11 Spring EBH1515 56 Screw BMZ20P022FMC
12 Spring EBH1587 57 Spring EBH1545
13 Spring EBH1517 58 Washer YE20FUC
14 Spring EBH1518 59 Pinch Holder Unit EXA1529
15