Pioneer KEX-M8186ZT/ES Service Manual
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Pioneer KEX-M8186ZT/ES Service Manual

Pioneer KEX-M8186ZT/ES Service Manual

Lexus es300 audio system head unit
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Service
Manual
AUDIO SYSTEM
HEAD UNIT
VEHICLE
DESTINATION
LEXUS ES300
MIDDLE EAST
Manufactured for TOYOTA
by PIONEER ELECTRONIC CORPORATION
ES300
PRODUCED AFTER
ID No.
December 1998
P7510
TOYOTA PART No.
PIONEER MODEL No.
86120-33230
KEX-M8186ZT/ES
KEX-M8186ZT-91/ES
PUB. NO.
ORDER NO.
CRT2252
CRT2252

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Summary of Contents for Pioneer KEX-M8186ZT/ES

  • Page 1 ORDER NO. CRT2252 ES300 AUDIO SYSTEM HEAD UNIT VEHICLE DESTINATION PRODUCED AFTER ID No. TOYOTA PART No. PIONEER MODEL No. LEXUS ES300 MIDDLE EAST December 1998 P7510 86120-33230 KEX-M8186ZT/ES KEX-M8186ZT-91/ES Manufactured for TOYOTA CRT2252 by PIONEER ELECTRONIC CORPORATION PUB. NO.

  • Page 2: Table Of Contents

    - The KEX-M8186ZT-91/ES is supplementary genuine part for a TOYOTA vehicle, and a Pioneer product for recycling stock. - As for the structure and electrical system, there is no difference between the KEX-M8186ZT/ES and KEX-M8186ZT-91/ES. - Supplementary model is identical to the original except for the addition of following items.

  • Page 3: Safety Information

    KEX-M8186ZT,M8186ZT-91 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.

  • Page 4: Exploded Views And Parts List

    KEX-M8186ZT,M8186ZT-91 2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR...
  • Page 5 KEX-M8186ZT,M8186ZT-91 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 - EXTERIOR SECTION PARTS LIST Mark No. Description Part No.
  • Page 6 KEX-M8186ZT,M8186ZT-91 2.2 CASSETTE MECHANISM MODULE...
  • Page 7 KEX-M8186ZT,M8186ZT-91 - CASSETTE MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Pinch Roller Assy EXX1037 46 Gear ENV1423 2 Screw BSZ20P040FMC 47 Collar ENV1508 3 Screw(M2x4) CBA1015 48 Gear ENV1350 4 Washer CBF1037 49 Gear ENV1351...

  • Page 8: Schematic Diagram

    KEX-M8186ZT,M8186ZT-91 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 Detailed page 4.5MHz...
  • Page 9 KEX-M8186ZT,M8186ZT-91 MAIN UNIT MAIN P.C.B TUNER P.C.B...
  • Page 10 KEX-M8186ZT,M8186ZT-91...
  • Page 11 KEX-M8186ZT,M8186ZT-91...
  • Page 12 KEX-M8186ZT,M8186ZT-91...
  • Page 13 KEX-M8186ZT,M8186ZT-91...
  • Page 14 KEX-M8186ZT,M8186ZT-91 3.2 TUNER P.C.B MAIN P.C.B TUNER P.C.B...
  • Page 15 KEX-M8186ZT,M8186ZT-91 3.3 KEYBOARD UNIT KEYBOARD P.C.B VOLUME P.C.B...
  • Page 16 KEX-M8186ZT,M8186ZT-91 3.4 MW/SW UNIT...
  • Page 17 KEX-M8186ZT,M8186ZT-91 MW/SW TUNER...
  • Page 18 KEX-M8186ZT,M8186ZT-91 3.5 FM UNIT...
  • Page 19 KEX-M8186ZT,M8186ZT-91...
  • Page 20 KEX-M8186ZT,M8186ZT-91 3.6 CASSETTE MECHANISM MODULE CN402...
  • Page 21 KEX-M8186ZT,M8186ZT-91...
  • Page 22 KEX-M8186ZT,M8186ZT-91 3.7 LCD UNIT...
  • Page 23 KEX-M8186ZT,M8186ZT-91...

  • Page 24: Pcb Connection Diagram

    KEX-M8186ZT,M8186ZT-91 4. PCB CONNECTION DIAGRAM MAIN P.C.B 4.1 MAIN UNIT CN901 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 25 KEX-M8186ZT,M8186ZT-91 SIDE A CN902 CN903 TUNER P.C.B...
  • Page 26 KEX-M8186ZT,M8186ZT-91 MAIN P.C.B...
  • Page 27 KEX-M8186ZT,M8186ZT-91 SIDE B...
  • Page 28 KEX-M8186ZT,M8186ZT-91 SIDE A TUNER P.C.B FM UNIT CN401 MW/SW UNIT...
  • Page 29 KEX-M8186ZT,M8186ZT-91 SIDE B TUNER P.C.B...
  • Page 30 KEX-M8186ZT,M8186ZT-91 4.2 KEYBOARD UNIT SIDE A...
  • Page 31 KEX-M8186ZT,M8186ZT-91 SIDE B...
  • Page 32 KEX-M8186ZT,M8186ZT-91 4.3 MW/SW UNIT SIDE A...
  • Page 33 KEX-M8186ZT,M8186ZT-91 SIDE B...
  • Page 34 KEX-M8186ZT,M8186ZT-91 4.4 FM UNIT SIDE A...
  • Page 35 KEX-M8186ZT,M8186ZT-91 SIDE B...
  • Page 36 KEX-M8186ZT,M8186ZT-91 4.5 CASSETTE MECHANISM MODULE SIDE A DECK UNIT CN402 SIDE B DECK UNIT P.C.B UNIT CN253...
  • Page 37 KEX-M8186ZT,M8186ZT-91 4.6 LCD UNIT SIDE A SIDE B...

  • Page 38: Electrical Parts List

    KEX-M8186ZT,M8186ZT-91 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 39 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- CKSRYB103K25 CKSQYB103K50 CCSQCJ3R0C50 CEV1R0M50 CCSQCH120J50 CKSQYB104K25 CKSRYB103K25 CKSYB474K16 CKSYB474K16 Unit Number : CWM3710 Unit Name : Deck Unit CKSQYB222J50 CKSQYB222J50 MISCELLANEOUS CKSQYB222J50...
  • Page 40 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- Chip Transistor 2SA1162 Diode ERA15-02VH Transistor 2SB1260 Diode MA153 Chip Transistor 2SA1162 Diode UDZ10(B) Transistor 2SB1260 Diode UDZ8R2(B) Chip Transistor 2SA1162 Diode 1SS355...
  • Page 41 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- RS1/10S102J RS1/10S683J RS1/10S102J RS1/10S102J RS1/10S102J RS1/10S221J RS1/10S473J RS1/10S103J RS1/10S222J RS1/10S102J RS1/10S473J RS1/10S101J RS1/10S473J RS1/10S102J RS1/10S472J RS1/10S102J RS1/10S0R0J RS1/10S102J RS1/10S103J RS1/10S102J RS1/10S682J RS1/10S222J...
  • Page 42 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- RS1/10S473J RS1/10S473J RS1/10S473J RS1/10S473J RS1/10S473J RS1/10S473J RS1/10S222J RS1/10S101J RS1/10S102J RS1/10S101J RS1/10S473J RS1/10S101J RS1/10S102J RS1/10S101J RS1/10S473J RS1/10S473J RS1/10S222J RS1/10S473J RS1/10S222J RS1/4S221J RS1/10S222J RS1/10S102J...
  • Page 43 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- 1054 RS1/10S103J CEAS100M16 1055 RS1/10S103J CKSQYB103K25 1057 RS1/10S471J CKSQYB103K25 1058 RS1/10S102J CKCYB472K50 1059 RS1/10S102J CKSQYB392K50 1060 RS1/10S102J CKSQYB103K25 1061 RS1/10S101J CKSQYB103K25 1063...
  • Page 44 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- CEJA4R7M35 Unit Number : CWE1345 CCSQCH150J50 Unit Name : FM Unit CCSQCH150J50 CKSQYB102K50 MISCELLANEOUS CKSQYB103K25 PA4021A CKSQYB473K16 Transistor DTC124EU CEHAQ100M16 Transistor DTC124EU...
  • Page 45 KEX-M8186ZT,M8186ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ -------------------------------------------- ------------------------- ------ -------------------------------------------- ------------------------- RS1/10S222J RS1/10S222J Keyboard Unit RS1/10S222J Consists of RS1/10S154J Keyboard P.C.B RS1/10S104J Volume P.C.B RS1/10S473J Unit Number : CWM6018 RS1/10S153J Unit Name : Keyboard Unit RS1/10S225J...

  • Page 46: Adjustment

    KEX-M8186ZT,M8186ZT-91 6. ADJUSTMENT 6.1 TEST MODE Test mode is mainly used adjustment of CDX-M8066ZT/WL. a) CD multi-player Function SCAN Power ON/OFF TRK UP FWD kick TRK DOWN REV kick Tracking close Tracking open Focus close • Switching to test mode Normal mode Press the CD key three times, while holding down the [1] and...
  • Page 47 KEX-M8186ZT,M8186ZT-91 - Flow Chart Press the CD key three times, while holding down the [1] and [6] keys simultaneously. Diagnosis mode Press the TRK UP and CD keys simultaneously. CD test mode Normal focus close 00 S curve check 01 Focus EQ check 02 <Regulator OFF>...
  • Page 48 KEX-M8186ZT,M8186ZT-91 6.2. ERROR NUMBERS INDICATION If the CD should fail to operate in CD multi player or if an error has taken place during the operation and resulted in an error, the player will enter into the error mode. And the cause of such error is numerically indicated. This is armed at assisting an analysis or repair.
  • Page 49 KEX-M8186ZT,M8186ZT-91 6.3 TUNER / AUDIO SECTION NOTE: Select C1 so that total capacity of 80pF is attained from - Connection Diagram the direction of the receiver jack. Z: Output impedance of SSG. BACK UP +13.2V DC Regulated Power Supply Lch + 4Ω...
  • Page 50 Test Tape Adjustment Point Adjustment Method (Switch Position) NCT-150(400Hz,200nwb/m) VR301(Lch),VR302(Rch) mV Meter(2) : –8.24dBs + 1.5dB –0.5dB (DOLBY NR Switch : OFF) JIGS GGD1012 KEX-M8186ZT/ES~GM-8066ZT/UC GGD1070 MAIN P.C.B~TUNER P.C.B GGD1077 MAIN P.C.B~KEY BOARD P.C.B GGD1092 KEX-M8186ZT/ES~CDX-M8066ZT/WL GGD1019 MAIN P.C.B~DECK UNIT...

  • Page 51: General Information

    KEX-M8186ZT,M8186ZT-91 7. GENERAL INFORMATION 7.1 PARTS 7.1.1 IC - Pin Functions (PD4992A) Pin No. Pin Name Format Function and Operation A/D converter input from FADER volume MAIN A/D converter input from FADER volume freq Switch control terminals for the broadcast station name display and frequency display AVSS A/D GND...
  • Page 52 KEX-M8186ZT,M8186ZT-91 Pin No. Pin Name Format Function and Operation Station detector input asen ACC sense input isen Illumination sense input BSEN Back up power sense input exoe Enable output for external IC exld Extention I/O load output eject Eject key input pin Power supply Crystal oscillator connection pin Crystal oscillator connection pin...

  • Page 53: Display

    KEX-M8186ZT,M8186ZT-91 7.1.2 DISPLAY - CAW1494...

  • Page 54: Diagnosis

    KEX-M8186ZT,M8186ZT-91 7.2 DIAGNOSIS 7.2.1 DIAGNOSIS MODE...
  • Page 55 KEX-M8186ZT,M8186ZT-91...
  • Page 56 KEX-M8186ZT,M8186ZT-91...
  • Page 57 KEX-M8186ZT,M8186ZT-91...

  • Page 58: Disassembly

    KEX-M8186ZT,M8186ZT-91 7.2.2 DISASSEMBLY NOTE : Remove in the order of the circled numbers in the disassembly diagram. NOTE : The temperature of the screw on the right side of the rear panel rises. • The cassette mechanism will not come off unless the grille is removed. •...

  • Page 59: Connector Function Description

    KEX-M8186ZT,M8186ZT-91 7.2.3 CONNECTOR FUNCTION DESCRIPTION ANTENNA JACK MUTE MUTE BEEP T E L M U T E ANT+B...

  • Page 60: Block Diagram

    KEX-M8186ZT,M8186ZT-91 7.3 BLOCK DIAGRAM...
  • Page 61 KEX-M8186ZT,M8186ZT-91...

  • Page 62: Operations And Specifications

    KEX-M8186ZT,M8186ZT-91 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS - RADIO PRESET RECALL SCAN PRESET CH.MEMORY PRESET AM/SW SCAN VOLUME, POWER ON/OFF P7510 MANUAL, SEEK TUNING DOWN FADER BASS TREBLE BALANCE - TAPE FAST BLANK FORWARD SKIP DOLBY NR MUSIC DIRECTION CHANGE REWIND SCAN REPEAT...
  • Page 63 KEX-M8186ZT,M8186ZT-91 - CD FAST UP DISC NUMBER RANDOM SEARCH PLAY FAST DOWN TRACK DISC SCAN, DOWN REPEAT TRACK SCAN VOLUME, POWER ON/OFF TRACK P7510 NUMBER SEARCH DOWN FADER BASS TREBLE BALANCE 8.2 SPECIFICATIONS General FM tuner Power source ......13.2 V (10.5 V -16.0 V allowable) Frequency range..........87.75 - 107.9 MHz Grounding system..........Negative type Stereo S/N............More than 48 dB...
  • Page 64 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-ZZY. DEC. 1998 Printed in Japan...

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