Pioneer KEH-P7850 Bedienungsanleitung

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

KEH-P7850

2. EXPLODED VIEWS AND PARTS LIST

2.1 PACKING

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.

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

KEH-P7850

2.2 EXTERIOR

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.

KEH-P7850

91 Holder CNS5165

92 Holder CNS5389

93 Switch(S602) CSN1027

94 Holder Unit CXB3049

95 Holder Unit CXB3050

96 Holder Unit CXB3051

97 Damper Unit CXB3180

98 Screw IMS20P040FZK

99 Remote Control Unit CXB3456

100 Cover CNS4948

101 •••••

102 Cassette Mechanism Module EXK3990

103 Coil(L801) CTH1227

104 IC(IC301) PAL005A

105 Transistor(Q951) 2SD2396

Mark No. Description Part No.

KEH-P7850

2.3 CASSETTE MECHANISM MODULE

KEH-P7850

1 Screw BSZ20P040FMC

2 Washer CBF1037

3 Washer CBF1038

4 Washer CBG1003

5 Deck Unit EWM1018

6 Screw EBA1028

7 Screw EBA1037

8 Spring EBH1531

9 Spring EBH1575

10 Plug(CN251) CKS3540

11 Spring EBH1515

12 Spring EBH1587

13 Spring EBH1517

14 Spring EBH1518

15 Spring EBH1519

16 Spring EBH1537

17 Cord EDD1020

18 Photo-interrupter(EGN2,3) EGN1006

19 Photo-interrupter(EGN1) EGN1005

20 Roller ENR1031

21 Shaft ELA1373

22 Pinch Roller ENV1518

23 Arm ENC1489

24 Arm ENC1397

25 Guide ENC1481

26 Holder ENC1417

27 Lever ENC1448

28 Arm ENC1488

* 29 Motor EXM1031

30 Belt ENT1027

31 Gear ENV1347

32 Collar ENV1508

33 Gear ENV1350

34 Flywheel ENV1500

35 Worm Gear ENV1439

36 Worm Wheel ENV1440

37 Gear ENR1037

38 Lever ENV1442

39 Arm ENV1525

40 Gathering PCB ENX1037

41 Gathering PCB ENX1042

42 Switch(S1,S2) ESG1004

43 Motor Unit(M2) EXA1485

44 Chassis Unit EXA1567

45 Pinch Holder ENV1485

46 Pinch Holder ENV1486

47 Reel Unit EXA1543

48 Head Base Unit EXA1457

49 Lever Unit EXA1438

50 Gear Unit EXA1545

51 Frame Unit EXA1458

52 Lever Unit EXA1439

53 Head Assy(HD1) EXA1506

54 Motor Unit(M1) EXA1490

55 Washer HBF-179

56 Screw BMZ20P022FMC

57 Spring EBH1545

58 Washer YE20FUC

59 Pinch Holder Unit EXA1529

60 Pinch Holder Unit EXA1528

Mark No. Description Part No. Mark No. Description Part No.

-CASSETTE MECHANISM MODULE SECTION PARTS LIST

KEH-P7850

1234

3. SCHEMATIC DIAGRAM

3.1 OVERALL CONNECTION DIAGRAM (GUIDE PAGE)

Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL

PARTS LIST”.

A-aA-a A-bA-b

A-bA-b

A-aA-a

Large size

SCH diagram

Guide page

Detailed page

A-a

D E F MODULE

ANTENNA JACK

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