Pioneer KEH-8056ZT Service Manual

High power cassette player with fm/am tuner

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Manual

HIGH POWER CASSETTE PLAYER WITH FM/AM TUNER

KEH-8056

VEHICLE

DESTINATION

Not specified

Puerto Rico,

Chile, Peru,

Venezuelz,

The Caribbean

countries

- This service manual should be used together with the following manual(s):

Model

CX-644

KEH-1950/X1M/ES

PIONEER CORPORATION

PIONEER ELECTRONICS SERVICE INC.

PIONEER EUROPE NV

Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium

PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936

C PIONEER CORPORATION 2000

TOYOTA

PRODUCED AFTER

July 2000

Order No. Mech. Module Remarks

CRT1800

CRT2424

4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan

P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A.

PART No.

08600-00946

Cassette Mech. Module:Mech.Description, Disassembly

ORDER NO.

CRT2531

X1N/ES

ID No.

PIONEER MODEL No.

T7409

KEH-8056ZT/X1N/ES

K-ZZY. JUNE 2000 Printed in Japan

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Page 1 PIONEER ELECTRONICS SERVICE INC. P.O.Box 1760, Long Beach, CA 90801-1760 U.S.A. PIONEER EUROPE NV Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE.LTD. 253 Alexandra Road, #04-01, Singapore 159936 C PIONEER CORPORATION 2000 K-ZZY. JUNE 2000 Printed in Japan...
Page 2 KEH-8056ZT EXPLODED VIEWS AND PARTS LIST PACKING 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 Mark No.
Page 3 KEH-8056ZT EXTERIOR (Page 4) - EXTERIOR SECTION PARTS LIST Part No. Mark No. Description KEH-1950/X1M/ES KEH-8056ZT/X1N/ES Panel CNS5214 Not used Chassis Unit CXA9851 CXB4403 Holder Unit CXA2687 Not used Detach Grille Assy CXB4674 CXB6018 Button(EJECT) CAC5870 CAC5871 Button(REW) CAC5872 CAC5873...
Page 4: 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 CORPORATION 1999 K-ZZY. NOV. 1999 Printed in Japan...
Page 5 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 CORPORATION 1999 K-ZZY. NOV. 1999 Printed in Japan...
Page 6 KEH-1900,1950 EXPLODED VIEWS AND PARTS LIST PACKING(Page 2) - PACKING SECTION PARTS LIST Part No. Mark No. Description KEH-1900/X1M/UC KEH-1900/X1N/UC KEH-1900/X1IN/UC Carton CHG3913 CHG3921 CHG3917 Contain Box CHL3913 CHL3921 CHL3917 Part No. Mark No. Description KEH-1950/X1M/ES KEH-1950/X1N/ES KEH-1950/X1IN/ES Carton CHG3914 CHG3922 CHG3918 Contain Box...
Page 7: Safety Information
KEH-1900,1950 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 8 KEH-1900,1950 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 KEH-1900/X1M/UC KEH-1950/X1M/ES 1 Accessory Assy...
Page 9 KEH-1900,1950 2.2 EXTERIOR...
Page 10 KEH-1900,1950 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ26P050FMC 36 Button(TUNER/BAND) CAC6297 2 Screw BSZ30P055FUC 37 Button(1-6) CAC6300 3 Screw BSZ30P060FMC 38 Button(DETACH) CAC6301 4 Screw BSZ30P100FMC 39 Spring CBH1836 5 Cord Assy CDE6145 40 Spring...
Page 11: Cassette Mechanism Assy
KEH-1900,1950 2.3 CASSETTE MECHANISM ASSY...
Page 12 KEH-1900,1950 - 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 ENV1502 5 Screw(M2x2.5) EBA1037...
Page 13: Block Diagram And Schematic Diagram
KEH-1900,1950 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM - KEH-1900/X1M/UC TUNER AMP UNIT TUN-L FM/AM TUNER UNIT ILL+B Q31 CF51 CF52 CF53 FM/AM MIX FM/AM IF FM IF FM IF FM RF CN301 FWD-L 41 9 10 14 15 FM/AM PROCESSOR FM PROCESSOR IC 2 PA4024A...
Page 14 KEH-1900,1950 CN401 TUN-L REAR Lch OUT RL OUT Q403 Q401 ILL+B MUTE ELECTRONIC VOLUME FWD-L POWER AMP CASSETTE SPEAKER EQUALIZER IC 401 FWD/REV SWITCH IC 501 SN761029DL IC 201 TDA7384 LA3161P SPEAKER STBY MUTE FIX+B SYSPW REV-L FWD/REV MUTE SWITCH Q609 Q501 MUTE...
Page 15: Overall Connection Diagram(Guide Page)
KEH-1900,1950 3.2 OVERALL CONNECTION DIAGRAM(GUIDE PAGE) Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. TUNER AMP UNIT ELECTRONIC VOLU Large size SCH diagram FM/AM TUNER UNIT Guide page AM : -26.0dBs FM : -20.0dBs Detailed page -29.0dB...
Page 16 KEH-1900,1950 FM : 100% 35.1dBs AM : 30% 24.1dBs TAPE : 315Hz 0dB 22.1dBs TAPE : -4.5dBs POWER AMP TAPE : -3.9dBs AM : -0.9dBs FM : 5.1dBs TAPE : 22.1dBs FUSE 600µH B.REMOTE KEY/LCD DRIVER CEL 1547 14V 40mA KEYBOARD UNIT C427 27P 24P...
Page 17 KEH-1900,1950...
Page 18 KEH-1900,1950...
Page 19 KEH-1900,1950...
Page 20 KEH-1900,1950...
Page 21 KEH-1900,1950 3.3 FM/AM TUNER UNIT FM/AM TUNER UN...
Page 22 KEH-1900,1950 R UNIT...
Page 23: Pcb Connection Diagram
KEH-1900,1950 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 24 KEH-1900,1950 SIDE A CN901...
Page 25 KEH-1900,1950 TUNER AMP UNIT...
Page 26 KEH-1900,1950 SIDE B...
Page 27 KEH-1900,1950 4.2 FM/AM TUNER UNIT SIDE A...
Page 28 KEH-1900,1950 SIDE B...
Page 29: Keyboard Unit
KEH-1900,1950 4.3 KEYBOARD UNIT SIDE A SIDE B...
Page 30 KEH-1900,1950 4.4 CASSETTE PCB CASSETTE PCB LOAD SW MOTOR FWD/REV PB HEAD MUTE SW 5 7 9 FWD/REV SW 8 10 CN601...
Page 31: Electrical Parts List
KEH-1900,1950 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 32 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S393J CAPACITORS (1950/X1M/ES) RS1/10S0R0J RS1/10S0R0J CEJA2R2M50 (1950/X1M/ES) RS1/8S0R0J CEJA2R2M50 RS1/10S162J CKSQYB333K25 CKSQYB333K25 RS1/10S162J CEJA101M10 RS1/10S0R0J RS1/10S272J CEJA101M10 RS1/10S272J CKSQYB681K50 RS1/10S151J CKSQYB681K50 CEJA101M10...
Page 33 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CEJA100M16 RESISTORS CKSQYB104K50 CKSQYB104K16 RS1/16S225J CKSQYB102K50 RS1/16S225J CEJA4R7M35 RS1/16S154J RS1/16S391J CKSQYB224K16 RS1/16S223J CKSQYB102K50 CCSQCH100D50 RS1/16S123J CCSQCH110J50 RS1/16S332J CKSQYB103K50 RS1/16S473J RS1/16S223J (1950/X1M/ES) CKSQYB104K16...
Page 34 KEH-1900,1950 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CAPACITORS CCSRCH560J50 CKSQYB104K16 CCSRCH101J50 CCSQCH6R0D50 CEJA470M6R3 CCSRCK2R0C50 CKSRYB103K25 CCSRCH820J50 CCSRCH820J50 CCSRCH101J50 CKSRYB103K25 CEJA1R5M50 CCSRCH471J50 CKSQYB104K16 CKSRYB103K25 CCSRCKR50C50 CKSRYB103K25 CEJA1R0M50 CKSRYB222K50 CCSRCH330J50 CKSRYB222K50...
Page 35: Adjustment
KEH-1900,1950 6. ADJUSTMENT - Connection Diagram BACK UP +14.4V DC Regulated Power Supply Lch + 4Ω Lch - mV Meter (1) Oscilloscope Rch + 4Ω Rch - Dummy Antenna Antenna Plug 50Ω (37.5Ω ) Stereo FM SSG Modulator 50Ω (75Ω ) Antenna Jack FM/AM TUNER UNIT (TOP VIEW) TUNER AMP UNIT...
Page 36 KEH-1900,1950 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. KEH-1900/X1M/UC FM SSG Displayed...
Page 37: General Information
KEH-1900,1950 7. GENERAL INFORMATION 7.1 DISASSEMBLY Cassette Mechanism Assy Remove the Case(not shown) 1. Remove the three screws. 2. Remove the Case. Remove the Cassette Mechanism Assy (not shown) 1. Remove the four screws. 2.Disconnect the connector, and then remove the Cassette Mechanism Assy.
Page 38: Parts
KEH-1900,1950 7.2 PARTS 7.2.1 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 FADERin-L FADERin-R FRNTout-L FRNTout-R REARout-L REARout-R...
Page 39 KEH-1900,1950 Pin Functions (PE5107A) Pin No. Pin Name Format Function and Operation mcmute Cassette mechanism mute input tapld Tape loading input Error output VDD1 Power supply VCOIN AM/FM VCO input ACC power sense input VDD2 Power supply Serial clock input and output for LCD driver Data output for LCD driver Key/LCD driver data input FMSD...
Page 40 KEH-1900,1950 *PE5107A IC's marked by* are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. Format Meaning C MOS - Pin Functions(PDC045A) Pin No. Pin Name Function and Operation 1–4 Not used 5–8 KS4-1 Key strobe output...
Page 41: Display
KEH-1900,1950 7.2.2 DISPLAY - CAW1568...
Page 42: Operations And Specifications
KEH-1900,1950 8. OPERATIONS AND SPECIFICATIONS - KEH-1900/X1M/UC...
Page 43 KEH-1900,1950 8.1 OPERATIONS - KEH-1900/X1M/UC...
Page 44 KEH-1900,1950...
Page 45: Specifications
KEH-1900,1950 8.2 SPECIFICATIONS - KEH-1900/X1M/UC Specifications General FM tuner Power source ..14.4 V DC (10.8 – 15.1 V allowable) Frequency range ........87.9 – 107.9 MHz Grounding system ........Negative type Usable sensitivity ............ 11 dBf (1.0 µV/75 Ω, mono, S/N: 30 dB) Max.
Page 46 KEH-1900,1950 - KEH-1950/X1M/ES 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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Crt2531

Pioneer KEH-8056ZT Service Manual

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