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Pioneer KEH-P424 Service Manual
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Pioneer KEH-P424 Service Manual

Multi-cd control high power cassette player with fm/am tuner
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3 7 63 1515 0
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ervice
M anua l
MULTI-CD CONTROL HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-P424
KEH-P4700
KEH-P4750
NOTE:
- See the separate manual CX-631(CRT1640) for the cassette mechanism description.
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L 13942296513
- 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.
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
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PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER ELECTRONIC [EUROPE] N.V.
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 501 Orchard Road, #10-00, Wheelock Place, Singapore 238880
C PIONEER ELECTRONIC CORPORATION 1998
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ao
u163
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i
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
http://www.xiaoyu163.com
2 9
8
• KEH-P424/X1M/UC
Q Q
3
6 7
1 3
1 5
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
co
.
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
9 4
2 8
ORDER NO.
CRT2169
X1M/UC
X1M/UC
X1M/ES
0 5
8
2 9
9 4
2 8
m
K-ZEM. FEB. 1998 Printed in Japan
9 9
9 9

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Summary of Contents for Pioneer KEH-P424

  • Page 1: Table Of Contents

    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...

  • Page 2: Safety Information

    KEH-P424,P4700,P4750 3 7 63 1515 0 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.
  • Page 3 KEH-P424,P4700,P4750 3 7 63 1515 0 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...

  • Page 4: Http://Www.xiaoyu163.Com 3

    KEH-P424,P4700,P4750 3 7 63 1515 0 2.2 EXTERIOR L 13942296513 u163 Fig. 2 http://www.xiaoyu163.com...
  • Page 5 KEH-P424,P4700,P4750 3 7 63 1515 0 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ26P050FMC 46 Arm CNV4693 2 Screw BSZ30P060FMC 47 Arm CNV4728 3 Cord Assy CDE5496 48 Panel Unit...

  • Page 6: Http://Www.xiaoyu163.Com

    KEH-P424,P4700,P4750 3 7 63 1515 0 (2) CONTRAST TABLE KEH-P424/X1M/UC, KEH-P4700/X1M/UC and KEH-P4750/X1M/ES are constructed the same except for the following: Part No. Mark No. Symbol and Description KEH-P424/X1M/UC KEH-P4700/X1M/UC KEH-P4750/X1M/ES ⊗ 18 Tuner Amp Unit CWM5847 CWM5836 CWM5800...

  • Page 7: Keh-P424,P4700,P4750

    KEH-P424,P4700,P4750 3 7 63 1515 0 - CASSETTE MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ20P040FMC 31 Gear ENV1347 2 Washer CBF1037 32 Collar ENV1508 3 Washer CBF1038 33 Gear...

  • Page 8: Schematic Diagram

    KEH-P424,P4700,P4750 3 7 63 1515 0 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”. Large size SCH diagram Guide page...
  • Page 9 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 Fig. 4 http://www.xiaoyu163.com...
  • Page 10 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 11 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 Fig. 5 http://www.xiaoyu163.com...
  • Page 12 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 13 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 Fig. 6 http://www.xiaoyu163.com...
  • Page 14 KEH-P424,P4700,P4750 3 7 63 1515 0 3.2 FM/AM TUNER UNIT FM/AM TUNER UNIT L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 15 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 Fig. 7 http://www.xiaoyu163.com...
  • Page 16 KEH-P424,P4700,P4750 3 7 63 1515 0 3.3 CASSETTE MECHANISM MODULE L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 17 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 Fig. 8 u163 D E F http://www.xiaoyu163.com...

  • Page 18: Pcb Connection Diagram

    KEH-P424,P4700,P4750 3 7 63 1515 0 4. PCB CONNECTION DIAGRAM 4.1 TUNER AMP UNIT TUNER AMP UNIT CORD ASSY NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for...
  • Page 19 KEH-P424,P4700,P4750 3 7 63 1515 0 SIDE A L 13942296513 u163 Fig. 9 CN901 CN251 http://www.xiaoyu163.com...
  • Page 20 KEH-P424,P4700,P4750 3 7 63 1515 0 TUNER AMP UNIT L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 21 KEH-P424,P4700,P4750 3 7 63 1515 0 SIDE B L 13942296513 u163 Fig. 10 http://www.xiaoyu163.com...
  • Page 22 KEH-P424,P4700,P4750 3 7 63 1515 0 4.2 KEYBOARD UNIT SIDE A L 13942296513 u163 Fig. 11 http://www.xiaoyu163.com...
  • Page 23 KEH-P424,P4700,P4750 3 7 63 1515 0 SIDE B L 13942296513 u163 Fig. 12 http://www.xiaoyu163.com...
  • Page 24 KEH-P424,P4700,P4750 3 7 63 1515 0 4.3 FM/AM TUNER UNIT SIDE A L 13942296513 u163 Fig. 13 http://www.xiaoyu163.com...
  • Page 25 KEH-P424,P4700,P4750 3 7 63 1515 0 SIDE B L 13942296513 u163 Fig. 14 http://www.xiaoyu163.com...
  • Page 26 KEH-P424,P4700,P4750 3 7 63 1515 0 4.4 CASSETTE MECHANISM MODULE DECK UNIT SIDE A IC,Q ADJ VR302 IC351 IC251 HEAD ASSY Q351 Q352 VR301 Fig. 15 L 13942296513 DECK UNIT SIDE B CN602 u163 Fig. 16 http://www.xiaoyu163.com...
  • Page 27 KEH-P424,P4700,P4750 3 7 63 1515 0 PCB UNIT SIDE A Fig. 17 PCB UNIT SIDE B L 13942296513 Fig. 18 REEL PCB u163 Fig. 19 http://www.xiaoyu163.com...

  • Page 28: Electrical Parts List

    KEH-P424,P4700,P4750 3 7 63 1515 0 5. ELECTRICAL PARTS LIST NOTE: - Parts whose parts numbers are omitted are subject to being not supplied. - The part numbers shown below indicate chip components. Chip Resistor RS1/_S___J,RS1/__S___J Chip Capacitor (except for CQS..) CKS.., CCS.., CSZS..
  • Page 29 CEJA100M16 CEJAR47M50 CCSRTH9R0D50 CEJAR33M50 CCSRTH120J50 CKSQYB473K16 CKSRYB333K16 CCSRCH471J50 CKSQYB473K16 CKSRYB103K25 (KEH-P424/X1M/UC,P4700/X1M/UC) CCSRCH101J50 CCSRCH471J50 CKSRYB103K25 CKSQYB472K50 Unit Number : CWM5847(KEH-P424/X1M/UC) : CWM5836(KEH-P4700/X1M/UC) CCSRCH5R0C50 : CWM5800(KEH-P4750/X1M/ES) CKSQYB104K16 Unit Name : Tuner Amp Unit L 13942296513 CCSRRH201J50 CKSRYB223K25 MISCELLANEOUS CKSRYB103K25 SN761027DL CCSRCH470J50 See Contrast table...
  • Page 30 KEH-P424,P4700,P4750 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Diode 1SS270 RS1/10S222J Diode 1SS270 See Contrast table Diode HZS7L(C2) See Contrast table...
  • Page 31 KEH-P424,P4700,P4750 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/8S222J CEJA4R7M35 RS1/10S222J CEJA100M16 RS1/10S222J CEJA100M16 RD1/4PU222J CKSQYB822K50 RD1/4PU222J CKSQYB822K50 RD1/4PU222J CEJA1R0M50 RS1/10S222J...
  • Page 32 CEJA1R0M50 CKSQYB472K50 CEJA1R0M50 CEJA1R0M50 CEJA1R0M50 CEJA100M16 CEJA100M16 CKSQYB102K50 CONTRAST TABLE of TUNER AMP UNIT KEH-P424/X1M/UC, KEH-P4700/X1M/UC and KEH-P4750/X1M/ES have the same construction except for the following: Part No. Symbol and Description KEH-P424/X1M/UC KEH-P4700/X1M/UC KEH-P4750/X1M/ES FM/AM Tuner Unit CWE1467 CWE1467 CWE1486...
  • Page 33 KEH-P424,P4700,P4750 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Unit Number : EWM1016 CKSQYB103K50 Unit Name : Deck Unit CKSQYB103K50 CKSYB104K50 MISCELLANEOUS...
  • Page 34 KEH-P424,P4700,P4750 3 7 63 1515 0 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S472J Unit Number : RS1/4S391J Unit Name : PCB Unit RS1/10S473J Switch (Load)

  • Page 35: Adjustment

    KEH-P424,P4700,P4750 3 7 63 1515 0 6. ADJUSTMENT - Connection Diagram BACK UP +14.4V D C R e g u l a t e d P o w e r S u p p l y Lch + 4Ω...
  • Page 36 Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) or 400Hz 100%(75kHz Dev.) S:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.) NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize. FM ADJUSTMENT(KEH-P424/X1M/UC,P4700/X1M/UC) FM SSG Displayed Adjustment...

  • Page 37: General Information

    KEH-P424,P4700,P4750 3 7 63 1515 0 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC TDA7384,TDA7386 L 13942296513 PM2006A u163 http://www.xiaoyu163.com...
  • Page 38 KEH-P424,P4700,P4750 3 7 63 1515 0 - Pin Functions (PD4915A): KEH-P424/X1M/UC) (PD4917A): KEH-P4700/X1M/UC, P4750/X1M/ES) Pin No. Pin Name Format Function and Operation ASENBO Slave power supply control output Not used ADPW A/D converter power AVSS A/D GND FIEOUT Not used...
  • Page 39 KEH-P424,P4700,P4750 3 7 63 1515 0 Pin No. Pin Name Format Function and Operation bsens Back up power sense input CLKIN Clock input Power supply Oscillator output Oscillator input Not used TESTIN Test program mode input AVDD A/D converter analogue power...
  • Page 40 KEH-P424,P4700,P4750 3 7 63 1515 0 - Pin Functions(PD6247A) Pin No. Pin Name Function and Operation Crystal oscillator connection pin Crystal oscillator connection pin System reset MODE1,0 Dimmer select output UART output UART input REMIN Remote control reception RVER...

  • Page 41: Display

    KEH-P424,P4700,P4750 3 7 63 1515 0 7.1.2 DISPLAY - CAW1477 L 13942296513 u163 Fig. 21 http://www.xiaoyu163.com...

  • Page 42: Disassembly

    KEH-P424,P4700,P4750 3 7 63 1515 0 7.2 DISASSEMBLY Removing the Case(not shown) 1. Remove the three screws. 2. Remove the Case. Removing the Cassette Mechanism Module (not shown) 1. Remove the four screws. 2.Disconnect the connector, and then removing the Cassette Mechanism Module.

  • Page 43: Block Diagram

    KEH-P424,P4700,P4750 3 7 63 1515 0 7.3 BLOCK DIAGRAM - KEH-P424/X1M/UC L 13942296513 u163 Fig. 24 http://www.xiaoyu163.com...

  • Page 44: Operations And Specifications

    KEH-P424,P4700,P4750 3 7 63 1515 0 8. OPERATIONS AND SPECIFICATIONS L 13942296513 u163 Fig. 25 http://www.xiaoyu163.com...
  • Page 45 KEH-P424,P4700,P4750 3 7 63 1515 0 8.1. OPERATIONS L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 46 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 47 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 48 KEH-P424,P4700,P4750 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 49: Specifications

    FM tuner Power source ..14.4 V DC (10.8 – 15.1 V allowable) Frequency range Grounding system ........Negative type ..87.9 – 107.9 MHz (KEH-P424/X1M/UC, P4700/X1M/UC) Max. current consumption ..10.0 A ......87.5 – 108 MHz (KEH-P424/X1M/UC) (KEH-P4750/X1M/ES) 8.5 A...
  • Page 50 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 http://www.xiaoyu163.com...

This manual is also suitable for:

Keh-p4700Keh-p4750

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