Pioneer KEH-1800 Service Manual
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Pioneer KEH-1800 Service Manual

High power cassette player with fm/mw/lw tuner
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Service
Manual
HIGH POWER CASSETTE PLAYER WITH FM/MW/LW TUNER
KEH-1800
KEH-1830
NOTE:
- See the separate manual CX-644(CRT1800) for the cassette mechanism description.
- The cassette mechanism assy employed in this model is one of 2M series.
CONTENTS
1. SAFETY INFORMATION............................................2
2. EXPLODED VIEWS AND PARTS LIST ......................2
3. SCHEMATIC DIAGRAM...........................................10
4. PCB CONNECTION DIAGRAM................................18
5. ELECTRICAL PARTS LIST........................................26
6. ADJUSTMENT .........................................................31
PIONEER ELECTRONIC CORPORATION
PIONEER ELECTRONICS SERVICE INC.
PIONEER ELECTRONIC [EUROPE] N.V.
PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936
C PIONEER ELECTRONIC CORPORATION 1998
KEH-1800/X1M/EW
X1M/EW
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.
Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
7. GENERAL INFORMATION.......................................33
7.1 PARTS ................................................................33
7.1.1 IC ...............................................................33
7.1.2 DISPLAY ...................................................37
7.2 DISASSEMBLY ..................................................38
7.3 BLOCK DIAGRAM .............................................39
8. OPERATIONS AND SPECIFICATIONS ....................40
K-ZZB. DEC. 1998 Printed in Japan
ORDER NO.
CRT2265
X1M/EW

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Summary of Contents for Pioneer KEH-1800

  • Page 1: Table Of Contents

    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-ZZB. DEC. 1998 Printed in Japan...

  • Page 2: Safety Information

    KEH-1800,1830 1. SAFETY INFORMATION 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-1800,1830 NOTE: - Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List. ∇ mark on the product are used for disassembly. - Screws adjacent to - PACKING SECTION PARTS LIST Part.No Mark No. Description...
  • Page 4 KEH-1800,1830 2.2 EXTERIOR...
  • Page 5 KEH-1800,1830 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ26P050FMC 41 Panel Unit See Contrast table(2) 2 Screw BSZ30P100FMC 42 Door See Contrast table(2) 3 Cord Assy CDE5807 43 Spring CBH1838...
  • Page 6 KEH-1800,1830 (2) CONTRAST TABLE KEH-1800/X1M/EW and KEH-1830/X1M/EW are constructed the same except for the following: Part No. Mark No. Description KEH-1800/X1M/EW KEH-1830/X1M/EW Chassis Unit CXB3226 CXB3227 Panel Unit CXB3714 CXB3716 Door CAT2028 CAT2037 Panel CNS5211 CNS5212 Detach Grille Assy CXB3377...
  • Page 7 KEH-1800,1830...
  • Page 8 KEH-1800,1830 2.3 CASSETTE MECHANISM ASSY...
  • Page 9 KEH-1800,1830 - CASSETTE MECHANISM ASSY SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ23P050FMC 46 Gear ENV1475 2 Washer CBG1003 47 Gear ENV1512 3 Connector(CN1) CKS2829 48 Gear ENV1513 4 Screw(M2x5) EBA1038 49 Gear...

  • Page 10: Schematic Diagram

    KEH-1800,1830 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 FM/AM TUNER UNIT Guide page Detailed page TAPE:-24dBs...
  • Page 11 KEH-1800,1830 TUNER AMP UNIT TAPE:-25dBs TAPE:-4dBs FM:+9dBs MW/LW:-1dBs TAPE:+22dBs BACK CLOCK LOUD KEYBOARD UNIT...
  • Page 12 KEH-1800,1830...
  • Page 13 KEH-1800,1830...
  • Page 14 KEH-1800,1830...
  • Page 15 KEH-1800,1830...
  • Page 16 KEH-1800,1830 3.2 FM/AM TUNER UNIT FM/AM TUNE...
  • Page 17 KEH-1800,1830 TUNER UNIT...

  • Page 18: Pcb Connection Diagram

    KEH-1800,1830 4. PCB CONNECTION DIAGRAM CORD ASSY 4.1 TUNER AMP UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB include all necessary parts for several destination. For further information for respective destinations, be sure to check with the schematic diagram.
  • Page 19 KEH-1800,1830 SIDE A IP-BUS...
  • Page 20 KEH-1800,1830 TUNER AMP UNIT...
  • Page 21 KEH-1800,1830 SIDE B...
  • Page 22 KEH-1800,1830 4.2 FM/AM TUNER UNIT SIDE A...
  • Page 23 KEH-1800,1830 SIDE B...
  • Page 24 KEH-1800,1830 4.3 KEYBOARD UNIT SIDE B SIDE A...
  • Page 25 KEH-1800,1830 4.4 CASSETTE MECHANISM ASSY CASSETTE PCB EJECT SW LOAD SW MOTOR FWD/REV PB HEAD MUTE SW 5 7 9 FWD/REV SW 8 10 CN604...

  • Page 26: Electrical Parts List

    KEH-1800,1830 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..=====Circuit Symbol and No.===Part Name Part No.
  • Page 27 KEH-1800,1830 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S473J RS1/10S473J RS1/10S681J RS1/10S472J RS1/10S681J RS1/10S223J RD1/4PU681J RS1/10S222J RD1/4PU681J RS1/10S472J RD1/4PU222J RD1/4PU102J RS1/8S472J RD1/4PU1R5J RD1/4PU102J RD1/4PU1R5J RS1/10S510J RD1/4PU1R0J RS1/10S0R0J...
  • Page 28 RS1/10S0R0J CKSQYB103K50 RS1/10S0R0J 330µF/10V CCH1181 CKSQYB103K50 CAPACITORS CKSQYB104K16 CEAL100M16 100µF/16V CCH1179 CKSQYB104K16 CKSQYB102K50 Unit Number : CWM6273(KEH-1800/X1M/EW) CCSCH101J50 Unit Name : Keyboard Unit Unit Number : CWE1466 MISCELLANEOUS Unit Name : FM/AM Tuner Unit PD6293A MISCELLANEOUS Diode STZ6R2N Ferri-Inductor LAU101K PA4023B Ceramic Resonator 4.97MHz...
  • Page 29 KEH-1800,1830 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Ferri-Inductor LAU330K RS1/16S102J Inductor CTF1287 RS1/16S272J Inductor LAU121K RS1/16S473J Inductor LCTA3R3J3225 RS1/16S103J Coil CTE1116 RS1/16S104J Coil CTC1136 RS1/16S104J Trimmer...
  • Page 30 KEH-1800,1830 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CCSRCH471J50 Unit Number : CCSRCH100D50 Unit Name : Cassette PCB CKSRYB332K50 CKSQYB473K16 Switch(Load) ESN1016 CKSQYB473K16 Switch(Mute) ESN1017 Switch(FWD/REV) ESH1006...

  • Page 31: Adjustment

    KEH-1800,1830 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 Lch - Oscilloscope mV Meter (1) Rch + 4Ω...
  • Page 32 KEH-1800,1830 FM ADJUSTMENT 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.

  • Page 33: General Information

    KEH-1800,1830 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC SN761029DL AVcc IN1-L IN1-R IN2-L IN2-R IN3-L IN3-R IN4(+)-L IN4(+)-R IN4(-)-L IN4(-)-R AGND AGND SWout-L SWout-R ZCin-L ZCin-R LOUD-L LOUD-R VRin-L VRin-R TREB-L TREB-R BASS-C1-L BASS-C1-R BASS-R-L BASS-R-R BASS-C2-L BASS-C2-R TONEout-L TONEout-R...
  • Page 34 KEH-1800,1830 - Pin Functions(PE5017B) Pin No. Pin Name Format Function and Operation Not used ADPW A/D converter power Not used AVREF1 (Connect to VDD) KYDT Key data input DPDT Display data output dsens Grille detach sense input TUNPDI PLL IC data input...
  • Page 35 KEH-1800,1830 *PE5017B Format Meaning C MOS IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. - Pin Functions (PD6293A) Pin No. Pin Name Function and Operation 1–5...
  • Page 36 KEH-1800,1830 PA4023B...

  • Page 37: Display

    KEH-1800,1830 7.1.2 DISPLAY - CAW1513...

  • Page 38: Disassembly

    KEH-1800,1830 7.2 DISASSEMBLY Removing the Case(not shown) 1. Remove the three screws. 2. Remove the Case. Removing the Cassette Mechanism Assy (not shown) 1. Remove the four screws. 2.Disconnect the connector, and then removing the Cassette Mechanism Assy. Removing the Panel Unit(Fig.1)

  • Page 39: Block Diagram

    KEH-1800,1830 7.3 BLOCK DIAGRAM - KEH-1800/X1M/EW...

  • Page 40: Operations And Specifications

    KEH-1800,1830 8. OPERATIONS AND SPECIFICATIONS...
  • Page 41 KEH-1800,1830...
  • Page 42 KEH-1800,1830...
  • Page 43 KEH-1800,1830...
  • Page 44 KEH-1800,1830 Specifications General FM tuner Power source ..14.4 V DC (10.8 – 15.1 V allowable) Frequency range ........87.5 – 108 MHz Grounding system ........Negative type Usable sensitivity ....11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) Max.

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Keh-1830

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