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Service
Manual
HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER
KEH-1800
KEH-1850
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.............................................8
4. PCB CONNECTION DIAGRAM................................18
5. ELECTRICAL PARTS LIST........................................26
6. ADJUSTMENT .........................................................32
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/UC
X1M/ES
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.......................................34
7.1 PARTS ................................................................34
7.1.1 IC ...............................................................34
7.1.2 DISPLAY ...................................................38
7.2 DISASSEMBLY ..................................................39
7.3 BLOCK DIAGRAM .............................................40
8. OPERATIONS AND SPECIFICATIONS ....................41
K-ZZB. DEC. 1998 Printed in Japan
ORDER NO.
CRT2266
X1M/UC
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Table of Contents
Related Manuals for Pioneer KEH-1800
Summary of Contents for Pioneer KEH-1800
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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-1800,1850 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-1800,1850 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-1800,1850 2.2 EXTERIOR...
- Page 5 Cassette Mechanism Assy EXK3450 71 Fuse(FU951)(10A) CEK1136 72 IC(IC501) TDA7384 73 Cord See Contrast table(2) (2) CONTRAST TABLE KEH-1800/X1M/UC and KEH-1850/X1M/ES are constructed the same except for the following: Part No. Mark No. Description KEH-1800/X1M/UC KEH-1850/X1M/ES Tuner Amp Unit CWM6352 CWM6277...
- Page 6 KEH-1800,1850 2.3 CASSETTE MECHANISM ASSY...
- Page 7 KEH-1800,1850 - 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 48 Gear ENV1513 3 Connector(CN1) CKS2829 4 Screw(M2x5) EBA1038 49 Gear ENV1502 5 Screw(M2x2.5)
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Page 8: Schematic Diagram
KEH-1800,1850 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 FM/AM TUNER UNIT SCH diagram CWE1467(/UC) CWE1486(/ES) Guide page Detailed page... - Page 9 KEH-1800,1850 TUNER AMP UNIT -25dBs TAPE:-4dBs FM:+5dBs AM:-1dBs +22dBs PE5017B KEYBOARD UNIT...
- Page 10 KEH-1800,1850...
- Page 11 KEH-1800,1850...
- Page 12 KEH-1800,1850...
- Page 13 KEH-1800,1850...
- Page 14 KEH-1800,1850 3.2 FM/AM TUNER UNIT - CWE1467 (KEH-1800/X1M/UC) FM/AM TUNER...
- Page 15 KEH-1800,1850 NER UNIT...
- Page 16 KEH-1800,1850 - CWE1486 (KEH-1850/X1M/ES) FM/AM TUNER...
- Page 17 KEH-1800,1850 NER UNIT...
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Page 18: Pcb Connection Diagram
KEH-1800,1850 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-1800,1850 SIDE A IP-BUS...
- Page 20 KEH-1800,1850 TUNER AMP UNIT...
- Page 21 KEH-1800,1850 SIDE B...
- Page 22 KEH-1800,1850 4.2 FM/AM TUNER UNIT SIDE A...
- Page 23 KEH-1800,1850 SIDE B...
- Page 24 KEH-1800,1850 4.3 KEYBOARD UNIT SIDE B SIDE A...
- Page 25 KEH-1800,1850 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...
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Page 26: Electrical Parts List
=====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Unit Number : CWM6352(KEH-1800/X1M/UC) Diode 1SR139-400 Unit Number : CWM6277(KEH-1850/X1M/ES) Diode 1SR139-400 Unit Name : Tuner Amp Unit Diode MA8056(H) - Page 27 KEH-1800,1850 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RD1/4PU472J RD1/4PU103J RD1/4PU473J RS1/8S0R0J RD1/4PU104J RS1/10S0R0J RS1/10S473J RD1/4PU102J RS1/10S473J RS1/10S472J RS1/10S681J RS1/10S101J RS1/10S681J RD1/4PU332J RD1/4PU681J RS1/10S103J RD1/4PU681J RD1/4PU102J RD1/4PU222J...
- Page 28 CKSQYB104K16 RS1/10S0R0J CKSQYB104K16 RS1/10S0R0J CKSQYB104K16 CAPACITORS CKSQYB104K16 CEJA100M16 CEAL100M16 CEJA2R2M50 CKSQYB104K16 CKSQYB473K50 CKSQYB102K50 CKSQYB104K16 CCSCH101J50 CEJA470M10 Unit Number : CWE1467 (KEH-1800/X1M/UC) CEJA2R2M50 Unit Name : FM/AM Tuner Unit CEJA2R2M50 CEJA2R2M50 MISCELLANEOUS CKSYB224K16 PA4023B CKSYB224K16 PA4024A CKSYB224K16 Transistor 2SC2412K CKSYB224K16 Transistor...
- Page 29 KEH-1800,1850 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RESISTORS CAPACITORS RS1/16S225J CCSQCH6R0D50 RS1/16S225J CCSRCK2R0C50 RS1/16S154J CCSRCH820J50 RS1/16S391J CCSRCH820J50 RS1/16S223J CKSRYB103K25 RS1/16S123J CKSQYB104K16 RS1/16S332J CCSRCKR50C50 RS1/16S473J CEJA1R0M50 RS1/16S223J...
- Page 30 KEH-1800,1850 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CCSRCH560J50 Ceramic Filter CTF1348 CKSQYB104K16 Radiator 918.5Hz CSS1365 CCSRCH101J50 Crystal Resonator 10.26MHz CSS1111 CEJA470M6R3 Semi-fixed 150kΩ(B) CCP1213 CKSRYB103K25 RESISTORS...
- Page 31 KEH-1800,1850 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CAPACITORS CKSQYB104K16 CCSRCH101J50 CCSQCH6R0D50 CEJA470M6R3 CCSRCK2R0C50 CKSRYB103K25 CCSRCH820J50 CCSRCH101J50 CCSRCH820J50 CKSRYB103K25 CEJA1R5M50 CCSRCH471J50 CKSQYB104K16 CKSRYB103K25 CCSRCKR50C50 CKSRYB103K25 CEJA1R0M50 CCSRCH330J50...
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Page 32: Adjustment
KEH-1800,1850 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 - mV Meter (1) Oscilloscope Rch + 4Ω... - Page 33 KEH-1800,1850 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.
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Page 34: General Information
KEH-1800,1850 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 35 KEH-1800,1850 - 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 36 KEH-1800,1850 *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 37 KEH-1800,1850 PA4023B...
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Page 38: Display
KEH-1800,1850 7.1.2 DISPLAY - CAW1513... -
Page 39: Disassembly
KEH-1800,1850 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 40: Block Diagram
KEH-1800,1850 7.3 BLOCK DIAGRAM - KEH-1800/X1M/UC... -
Page 41: Operations And Specifications
KEH-1800,1850 8. OPERATIONS AND SPECIFICATIONS... - Page 42 KEH-1800,1850...
- Page 43 KEH-1800,1850...
- Page 44 KEH-1800,1850...