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Service KEH-3830R/X1M/EW



Manual ORDER NO.
CRT2257

HIGH POWER CASSETTE PLAYER WITH RDS TUNER



KEH-3830R X1M/EW

KEH-3800R X1M/EW

KEH-3820R X1M/GR

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.




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-3830R,3800R,3820R

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.

2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING




12




2 8
4
3


5



6


10 13
1




11


7

9




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KEH-3830R,3800R,3820R



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.

(1) PACKING SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.
1 Cord Assy CDE5797 11 Protector CHP2101
2 Accessory Assy CEA1917 12-1 Owner's Manual See Contrast table(2)
3 Screw CBA1304 12-2 Owner's Manual See Contrast table(2)
4 Handle CNC5395 12-3 Installation Manual See Contrast table(2)
5 Bush CNV3930 * 12-4 Passport CRY1013

* 6 Polyethylene Bag E36-615 * 12-5 Warranty Card CRY1087
7 Polyethylene Bag CEG-162 13 Case Assy CXB3520
8 Carton See Contrast table(2)
9 Contain Box See Contrast table(2)
10 Protector CHP2102




(2) CONTRAST TABLE
KEH-3830R/X1M/EW, KEH-3800R/X1M/EW and KEH-3820R/X1M/GR are constructed the same except for
the following:

Part No.
Mark No. Description KEH-3830R/X1M/EW KEH-3800R/X1M/EW KEH-3820R/X1M/GR
8 Carton CHG3572 CHG3708 CHG3589
9 Contain Box CHL3572 CHL3708 CHL3589
12-1 Owner's Manual CRD2791 CRD2791 CRB1521
12-2 Owner's Manual CRD2792 CRD2792 Not used
12-3 Installation Manual CRD2793 CRD2793 CRB1522




- Owner's Manual, Installation Manual
Model Part No. Language
KEH-3830R/X1M/EW CRD2791 English,Spanish,German
KEH-3800R/X1M/EW CRD2792 French,Italian,Dutch
CRD2793 English,Spanish,German,
French,Italian,Dutch
KEH-3820R/X1M/GR CRB1521,CRB1522 German




3
KEH-3830R,3800R,3820R

2.2 EXTERIOR




4
KEH-3830R,3800R,3820R



(1) EXTERIOR SECTION PARTS LIST

Mark No. Description Part No. Mark No. Description Part No.
1 Screw BSZ26P050FMC 36 Button See Contrast table(2)
2 Screw BSZ30P050FMC 37 Button See Contrast table(2)
3 Cord Assy CDE5797 38 Button(Eject) CAC5793
4 Fuse(10A) CEK1136 39 Button(Display) CAC5934
5 Plug CKM1290 40 Button See Contrast table(2)

6 Case CNB2350 41 Button See Contrast table(2)
7 Screw BSZ30P050FMC 42 Spring CBH2103
8 Screw BSZ30P200FMC 43 Cover See Contrast table(2)
9 Holder CNC5704 44 Housing CNV5528
10 Cushion CNM5210 45 Keyboard Unit See Contrast table(2)

11 Insulator CNM5963 46 LCD(LCD1901) CAW1542
12 Tuner Amp Unit See Contrast table(2) 47 Connector(CN1901) CKS3580
13 Screw BSZ26P080FMC 48 Holder CNC7981
14 Screw BSZ26P160FMC 49 Sheet CNM5941
15 Cord CDE5752 50 Lighting Conductor CNV5527

16 FM/AM Tuner Unit See Contrast table(2) 51 Connector CNV5531
17 Holder CNC6554 52 Grille Unit See Contrast table(2)
18 Plug(CN603) CKM1288 53 Button CAC4836
19 Connector(CN602) CKS3568 54 Spring CBH1834
20 Connector(CN601) CKS3581 55 Spring CBH1835

21 Antenna Jack(CN402) CKX1056 56 Spring CBH2182
22 Panel CNB2344 57 Bracket CNC6135
23 Holder CNC5399 58 Bracket CNC6791
24 Holder CNC6845 59 Arm CNV4692
25 Holder CNC7996 60 Arm CNV4693

26 Heat Sink CNR1505 61 Arm CNV4728
27 Chassis Unit See Contrast table(2) 62 Panel Unit CXB3022
28 Screw ISS26P055FUC 63 Door CAT1835
29 Holder Unit CXB2687 64 Spring CBH1838
30 Detach Grille Assy See Contrast table(2) 65 Screw IMS20P030FZK

31 Screw BPZ20P060FMC 66 Case Assy CXB3520
32 Screw BPZ20P100FZK 67 Cassette Mechanism Module EXK3695
33 Button See Contrast table(2) 68 IC(IC302) TDA7384
34 Button(1-6) CAC5785 69 Transistor(Q904) 2SD2396
35 Button See Contrast table(2)




5
KEH-3830R,3800R,3820R

(2)CONTRAST TABLE
KEH-3830R/X1M/EW , KEH-3800R/X1M/EW and KEH-3820R/X1M/GR have
the same construction except for the following:
Part No.
Mark No. Description KEH-3830R/X1M/EW KEH-3800R/X1M/EW KEH-3820R/X1M/GR
12 Tuner Amp Unit CWM6251 CWM6251 CWM6250
16 FM/AM Tuner Unit CWE1466 CWE1466 CWE1470
27 Chassis Unit CXB3016 CXB3018 CXB3017
30 Detach Grille Assy CXB3325 CXB3880 CXB3324
33 Button(Detach) CAC5929 CAC5789 CAC5789
35 Button(-) CAC5931 CAC5930 CAC5930

36 Button(EQ) CAC6136 CAC6135 CAC6135
37 Button(+) CAC5797 CAC5783 CAC5783
40 Button(Cross) CAC5799 CAC5786 CAC5786
41 Button(A,B) CAC5801 CAC5787 CAC5787
43 Cover CNS5131 CNS5130 CNS5130

45 Keyboard Unit CWM6262 CWM6465 CWM6261
52 Grille Unit CXB4067 CXB4070 CXB4068
62 Panel Unit CXB3022 CXB3021 CXB3021
63 Door CAT1835 CAT2028 CAT2028


2.3 CASSETTE MECHANISM MODULE




6
KEH-3830R,3800R,3820R



- 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