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Pioneer CDX-M8127ZT/WL Service Manual
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Pioneer CDX-M8127ZT/WL Service Manual

Pioneer CDX-M8127ZT/WL Service Manual

Audio system cd changer
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Service
Manual
AUDIO SYSTEM
CD CHANGER
VEHICLE
DESTINATION
LEXUS GX470
U.S.A., CANADA
LAND CRUISER
Any country or
PRADO
area except for
Japan
LAND CRUISER
UNITED KINGDOM, September 2002
PRADO
AUSTRALIA,
NEW ZEALAND,
SOUTH AFRICA
Manufactured for TOYOTA
by PIONEER CORPORATION
GX470
PRODUCED AFTER
TOYOTA PART No.
November 2002
86270-60070
September 2002
86270-60070
86270-60080
ORDER NO.
CRT2930
ID No.
PIONEER MODEL No.
CDX-M8027ZT/E
CDX-M8027ZT/E
CDX-M8127ZT/WL
CRT2930
PUB. NO.

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Summary of Contents for Pioneer CDX-M8127ZT/WL

  • Page 1 Service Manual ORDER NO. CRT2930 GX470 AUDIO SYSTEM CD CHANGER VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS GX470 U.S.A., CANADA November 2002 86270-60070 CDX-M8027ZT/E LAND CRUISER Any country or September 2002 86270-60070 CDX-M8027ZT/E PRADO...
  • Page 2 For details, refer to "Important symbols for good services". CDX-M8127ZT/WL, CDX-M8027ZT/E - This service manual should be used together with the following manual(s): Model No. Order No. Mech. Module Remarks CX-652 CRT1857 CD Mech. Module:Circuit Description, Mech.Description, Disassembly - CD Player Service Precautions 3.

  • Page 3: Safety Information

    Specifications of laser radiation fields to which human access is possible during service. Wavelength = 785 nanometers Radiant power = 69.7 microwatts(Through a circular aperture stop having a diameter of 80 millimeters) 0.55 microwatts(Through a circular aperture stop having a diameter of 7 millimeters) CDX-M8127ZT/WL...

  • Page 4: Table Of Contents

    3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ...12 7.2 IC ................65 4. PCB CONNECTION DIAGRAM ........22 7.3 EXPLANATION ...........66 5. ELECTRICAL PARTS LIST ........28 7.3.1 SYSTEM BLOCK DIAGRAM.....66 6. ADJUSTMENT............32 7.3.2 OPERATIONAL FLOW CHART ....67 7. GENERAL INFORMATION ........61 7.4 CLEANING ............68 8. OPERATIONS............68 CDX-M8127ZT/WL...

  • Page 5: Specifications

    Grounding system ........................Negative type Backup current ........................1.0 mA or less Dimensions (No including the brackets) ..........248.2(W) x 66.0(H) x 164.5(D) mm Weight (CDX-M8127ZT/WL) ........................ 2.09 kg (CDX-M8027ZT/E) ........................2.05 kg CD player System ......................Compact disc audio system Usable discs ..........................

  • Page 6: Exploded Views And Parts List

    2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR (CDX-M8127ZT/WL) CDX-M8127ZT/WL...
  • Page 7 - For the applying amount of lubricants or glue, follow the instructions in this manual. ( In the case of no amount instructions, apply as you think it appropriate.) - EXTERIOR (CDX-M8127ZT/WL) SECTION PARTS LIST Mark No. Description Part No.
  • Page 8 2.2 EXTERIOR (CDX-M8027ZT/E) CDX-M8127ZT/WL...
  • Page 9 18 PCB CNP4402 19 Grille CNS4055 20 Damper CNV4501 21 Extension Unit CWX2654 22 Screw BMZ26P060FMC 23 Clamper CEF1008 24 Terminal(CN991) CKF1064 25 Terminal(CN992) CKF1064 26 Plug(CN901) CKS-789 27 Plug(CN951) CKS1037 28 Plug(CN902) CKS1237 29 Connector(CN801) CKS2233 30 Holder CNC9727 CDX-M8127ZT/WL...
  • Page 10 2.3 CD MECHANISM MODULE : GEM1024 : GEM1013 : GEM1029 CDX-M8127ZT/WL...
  • Page 11 CBA1250 52 Rail CNV4420 53 Clamper CNV6929 113 Bracket Unit CXB5749 54 Lever CNV4422 114 Spring CBL1363 55 Gear CNV6285 115 Motor Assy(M854) CXB5882 56 Gear CNV6242 57 Rack CNV4828 58 Arm CNV5868 59 Guide CNV4597 60 Arm CNV6158 CDX-M8127ZT/WL...

  • Page 12: Block Diagram And Schematic Diagram

    PCB UNIT I1/I3 I1/I3 MOTOR DRIVER VREF TRY+ M853 VREF EREF TRY- TRAY ELVR MOTOR EPVO IC 302 ELVPV CN801 LB1836M ELV+ VREF MOTOR PCB M852 ELV- MOTOR VREF EREF VR802 VR801 EPVO EREF EPVO EJSW S801 EJECT CN701 CN801 CDX-M8127ZT/WL...
  • Page 13 DISK SWITCH1 PCB Q852 SYSTEM CN951 CN961 S961 CLOSE CONTROLLER I1/I3 DCLOSE IC 701 EJSW PD5765B VREF POWER ELVREF SWITCH2 PCB X701 ELVPVO 6.29MH CN962 S962 OPEN XOUT TH701 Q701 VBU14 VREF POWER IC921 VD-8.6V/6.6V REGULATOR BA00AST EJECT SW CDX-M8127ZT/WL...
  • Page 14 3.2 OVERALL CONNECTION DIAGRAM Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL PARTS LIST”. CD CORE UNIT PICKUP UNIT(SERVICE) BA6997FM CL200FGCTU PHOTO PCB UNIT MOTOR PCB A B C D CDX-M8127ZT/WL...
  • Page 15 Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values discrete resistors. are expressed as : ← Symbol indicates a capacitor. ← No differentiation is made between chip capacitors and 0.022 R022 discrete capacitors. CDX-M8127ZT/WL...
  • Page 16 0.5s/div. 0.5s/div. 3 CH2: FD 0 CH2: MDYA 1V/div. 0 CH2: MDYA 1V/div. 0.2V/div. Normal mode: Play Normal mode: Focus close (12cm) Normal mode: Focus close (8cm) → → REFO REFO → REFO → → REFO REFO → REFO CDX-M8127ZT/WL...
  • Page 17 * CH1: R OUT 6 CH1: FEY 1V/div. 2V/div. 20µs/div. 0.2V/div. 0.2ms/div. 1ms/div. & CH2: L OUT 3 CH2: FD 1V/div. 0.5V/div. Normal mode: Play (1kHz 0dB) Normal mode: During AGC → REFO → REFO → REFO → REFO → REFO → CDX-M8127ZT/WL...
  • Page 18 0.5ms/div. 9 CH2: TD ^ CH2: HOLD ^ CH2: HOLD 5V/div. 5V/div. 0.5V/div. Normal mode: The defect part passes Normal mode: The defect part passes Normal mode: During AGC 800µm 800µm → REFO → REFO → REFO → → CDX-M8127ZT/WL...
  • Page 19 CDX-M8127ZT/WL...
  • Page 20 3.3 EXTENSION UNIT AND SWITCH UNIT CN701 SYSTEM CONTROL 6.290MHz VD REGULATOR 8.6V/6.6V CLOSE SWITCH1 PCB OPEN SWITCH2 PCB CDX-M8127ZT/WL...
  • Page 21 EXTENSION UNIT ANALOG SWITCH UNBAL-BAL CONVERTER AUDIO 8.5V HARD MUTE SYSTEM MUTE AUDIO 4.4V AVC-LAN BUS DRIVER 1.4mH VDD 5V/SENSE/RESET ASENSE BSENSE SWITCH UNIT Consists of SWITCH1 PCB SWITCH2 PCB CDX-M8127ZT/WL...

  • Page 22: Pcb Connection Diagram

    For further information for respective destinations, be sure to check with the schematic dia- gram. 2. Viewpoint of PCB diagrams PICKUP UNIT Capacitor Connector (SERVICE) SIDE A SIDE B P.C.Board Chip Part CN801 CDX-M8127ZT/WL...
  • Page 23 SIDE B CD CORE UNIT EJECT CDX-M8127ZTWL...
  • Page 24 4.2 EXTENSION UNIT EXTENSION UNIT SIDE A CORD ASSY CN961 CN701 CN962 CDX-M8127ZT/WL...
  • Page 25 EXTENSION UNIT SIDE B CDX-M8127ZTWL...
  • Page 26 4.3 PHOTO PCB HOME S853 PHOTO PCB SPINDLE M851 Q851 CARRIAGE M854 CN801 4.4 PCB UNIT PCB UNIT 4.5 MOTOR PCB MOTOR PCB B C D CDX-M8127ZT/WL...
  • Page 27 4.6 SWITCH1 PCB SIDE A SIDE B SWITCH1 PCB SWITCH1 PCB CLOSE CN951 4.7 SWITCH2 PCB SIDE A SIDE B SWITCH2 PCB SWITCH2 PCB CN951 OPEN CDX-M8127ZTWL...

  • Page 28: Electrical Parts List

    CKSRYB473K25 RS1/16S273J CKSRYB103K25 RS1/16S222J CKSRYB391K50 RS1/16S103J CCSRCH121J50 RS1/16S103J RS1/16S102J CKSRYB682K25 CKSRYB333K25 RS1/16S163J CKSRYB224K16 RS1/16S163J CKSRYB224K16 RS1/16S104J CKSRYB224K16 RS1/16S104J RS1/16S102J CKSRYB224K16 CKSRYB104K16 RS1/16S102J CKSRYB472K50 RS1/16S221J CKSRYB104K16 RAB4C221J CCSRCH6R0D50 RS1/16S102J RAB4C332J CKSRYB153K25 CKSRYB224K16 RS1/16S221J CKSRYB104K16 RS1/16S103J CEV101M6R3 RS1/16S103J CKSRYB224K16 RS1/16S103J RS1/16S103J CDX-M8127ZT/WL...
  • Page 29 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSRYB102K50 Diode 1SS355 CKSRYB224K16 Diode HZU4LL(C) CKSRYB104K16 Diode GP30ML CEV101M10 Diode ERA15-02VH CKSRYB224K16 Diode UDZS18(B) CCSRCH181J50 Inductor LCTA4R7J2520 CCSRCH181J50 Choke Coil 1.4mH CTH1129 CCSRCH820J50 Thermistor...
  • Page 30 CKSRYB473K50 CKSRYB102K50 CKSRYB473K50 Spring Switch(TRP) CSN1052 CKSRYB473K50 Spring Switch(DSP) CSN1051 RS1/8S473J CKSRYB102K50 RS1/8S753J CKSRYB102K50 CKSRYB102K50 Unit Number : CKSRYB473K50 Unit Name : Motor PCB CKSRYB473K50 CEJQ4R7M35 Motor Unit(TRAY) CXB5747 CEJQ4R7M35 CEJQ4R7M35 CEJQ4R7M35 CCSRCH151J50 CCSRCH151J50 CCSRCH470J50 CCSRCH470J50 CKSRYB104K25 CKSRYB104K25 CKSRYB472K50 CDX-M8127ZT/WL...
  • Page 31 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- Switch Unit Consists of Switch1 PCB Switch2 PCB Unit Number : CWM8564 Unit Name : Switch Unit MISCELLANEOUS Diode UDZS18(B) Spring Switch(CLOSE) CSN1033 Spring Switch(OPEN) CSN1033 CAPACITORS CKSRYB473K50 Miscellaneous Parts List CN504-2 Motor Unit(SPINDLE) CXB2187...

  • Page 32: Adjustment

    Bullet connector (To DC Regulated Power Supply) NAVI ECU(DENSO) GGD1169 GGD1240 AUI+ AUI- Bullet connector SP Line GGD1306 SDVD(PANA) RSE-ECU CDX-M8027ZT/E Bullet connector (To DC Regulated Power Supply) GGD1304 AV Unit Rear Display(F-TEN) Bullet connector (To DC Regulated Power Supply) CDX-M8127ZT/WL...
  • Page 33 • NORTH AMERICA LEXUS EMV SYSTEM M/L(RSE) KEX-M8727ZT/UC EMV(DENSO) GGD1305 GGD1239 Bullet connector Bullet connector (To DC Regulated Power Supply) (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) AMP(M/L) NAVI ECU(DENSO) GGD1169 GGD1240 AUI+ AUI- Bullet connector SP Line GGD1306 SDVD(PANA)
  • Page 34 Bullet connector (To DC Regulated Power Supply) NAVI ECU(DENSO) GGD1240 Bullet connector GGD1169 SP Line AUI- AUI+ RSA Controller CDX-M8027ZT/E *Please connect only one Multi CD at the same time *MCD does not operate if RSA controller is not connected. CDX-M8127ZT/WL...
  • Page 35 • NORTH AMERICA LEXUS EMV SYSTEM M/L(RSA) KEX-M8727ZT/UC EMV(DENSO) GGD1302 GGD1239 Bullet connector (To DC Regulated Power Supply) AMP(M/L) Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) NAVI ECU(DENSO) GGD1240 Bullet connector GGD1169 SP Line AUI- AUI+ RSA Controller...
  • Page 36 (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) NAVI ECU(DENSO) GGD1240 Bullet connector GGD1169 SP Line AUI- AUI+ Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E *Please connect only one Multi CD at the same time CDX-M8127ZT/WL...
  • Page 37 • NORTH AMERICA LEXUS EMV SYSTEM M/L KEX-M8727ZT/UC EMV(DENSO) GGD1304 GGD1300 GGD1239 Bullet connector (To DC Regulated Power Supply) AMP(M/L) Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) NAVI ECU(DENSO) GGD1240 GGD1169 Bullet connector SP Line AUI- AUI+...
  • Page 38 GM-8127ZT/EW(L) (To DC Regulated Power Supply) GM-8127ZT/WL(R) Bullet connector (To DC Regulated Power Supply) GGD1240 GGD1169 Bullet connector SP Line Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E(L) CDX-M8127ZT/WL(R) *Please connect only one Multi CD at the same time CDX-M8127ZT/WL...
  • Page 39 • AUSTRALIA TOYOTA STD SYSTEM FH-M8627ZT/ES GGF-146 GGD1304 Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) CDX-M8127ZT/WL *Please connect only one Multi CD at the same time CDX-M8127ZTWL...
  • Page 40 • AISIA TOYOTA(R) STD SYSTEM FH-M8627ZT/ES GGF-146 GGD1304 Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) CDX-M8127ZT/WL *Please connect only one Multi CD at the same time CDX-M8127ZT/WL...
  • Page 41 • AISIA TOYOTA(L) STD SYSTEM FH-M8527ZT/ES GGF-146 GGD1304 Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E *Please connect only one Multi CD at the same time CDX-M8127ZTWL...
  • Page 42 • MIDDLE EAST LEXUS STD SYSTEM FH-M8527ZT/ES GGF-146 GGD1304 Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E *Please connect only one Multi CD at the same time CDX-M8127ZT/WL...
  • Page 43 • SOUTH AND CENTRAL AMERICA TOYOTA STD SYSTEM FH-M8527ZT/CS GGF-146 GGD1304 Bullet connector (To DC Regulated Power Supply) Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E *Please connect only one Multi CD at the same time CDX-M8127ZTWL...
  • Page 44 CD changer error No. display CD ERR xx H/U : Return to the normal mode by Return to the normal mode ACC OFF/ON. CD changer : Return to the normal mode by resetting the microcomputer. *1 : It depends on TOYOTA diag. mode. CDX-M8127ZT/WL...
  • Page 45 6.1 CD ADJUSTMENT • Disc detection during loading and eject operations is 1)Precautions performed by means of a photo transistor in this • This unit uses a single power supply (+5V) for the reg- unit.Consequently,if the inside of the unit is exposed ulator.
  • Page 46 Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the aver- age angle. •Hint Reloading the disc changes the clamp position and may decrease the "wobble". CDX-M8127ZT/WL...
  • Page 47 Grating waveform Xch 20mV/div, AC Ych 20mV/div, AC CDX-M8127ZTWL...
  • Page 48 3. Press key ch1 twice to specify the amount of movement. The amount of movement changes each time key ch1 is pressed. TRACK FUNCTION maximum movement 00' 02" Key ch1 TRACK FUNCTION during movement 00' 01" Key ch1 Key ch1 TRACK FUNCTION minimum movement 00' 00" CDX-M8127ZT/WL...
  • Page 49 Examples of display 4. Press key RPT(ch5) to set ELV/TRAY mode to TRAY. TRACK FUNCTION 10' 02" 5. Press key TRACKUP to release the clamp and return the tray to the magazine. Release the clamp 6. Press key RPT(ch5) to enter Elevation Move mode. TRACK FUNCTION 00' 02"...
  • Page 50 17. Wait more than one minute after the power is turned off, then turn the power ON and insert a magazine. 18. Check if the mechanism operates correctly with the first and fourth CDs. 19. If the mechanism operates properly, adjustment is completed. If the mechanism operates improperly, make the adjustment again. CDX-M8127ZT/WL...
  • Page 51 Frame stopper Stopper bend of the clamp lever Dislocated toward the first CD. Fig. 2 Adjust to the graduation of the fourth CD. Fig. 1 Engaged in the center and pressed downward. Fig. 3 Dislocated toward the sixth CD. Fig. 4 CDX-M8127ZTWL...
  • Page 52 Mech. test mode IN CD test mode IN (1) CD test mode IN (2) (TRK 72 00'00'') (TRK00 00' 00") (No TRK Offset adjustment) (TRK 99 99' 99") Reg on Reg on CD test mode processing Mech. test mode processing CDX-M8127ZT/WL...
  • Page 53 Mech. test mode processing Press the RPT(ch5) key TRY/ELV selection (Direction selection) (TRK 72 ** 0X) 00:ELV 10:TRY Press the ch1 key Operation step selection (TRK 72 X0 ** ) 00 : For 8ms For 48ms 01 : For 24ms For 200ms 02 : During pressing During pressing Press the T.up key.
  • Page 54 CDX-M8127ZT/WL...
  • Page 55 - Error Number Indication If the CD should fail to operate or if an error has taken place during operation the player will enter into the error mode, and the cause of the error will be numerically indicated. This is aimed at assisting in analysis or repair. (1) Basic Means of Display •Examples of Display ERROR-xx...
  • Page 56 Connecting confirmation error Communication control Transmission failure Communication control Master reset (intermission) Communication control Master error (shifting to the sub master) Communication control Registration completion acknowledgement Communication control error ON/OFF command parameter error Communication control Registration requirement transmission Communication control CDX-M8127ZT/WL...
  • Page 57 - Physical address table CDX-M8127ZTWL...
  • Page 58 CDX-M8127ZT/WL...
  • Page 59 CDX-M8127ZTWL...
  • Page 60 CDX-M8127ZT/WL...

  • Page 61: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case nit (Fig.1) Case Unit e t e ten s e s an t en e t e Case Unit Fi 1 anis Removing the CD Mechanism Module (Fig.2) e t e t s in s e t e nne t t e...
  • Page 62 Unit, remove the connector. 2. Remove the Elevation Motor Assy lead wires marked with an arrow which are soldered onto the CD Core Unit. 3. Remove screw (A), screw (B) and screws (C)(2 screws), then remove the CD Core Unit. Fig. 5 CDX-M8127ZT/WL...
  • Page 63 - Cautions on replacing the flexible cable con- necting between the CD core unit and extension unit: Be sure to correctly insert the flexible cable terminals CD CORE UNIT into the CD core unit and extension unit as shown in CD CORE UNIT the right figures.

  • Page 64: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION - CDX-M8127ZT/WL MUTE CDL- CDL+ CDR- CDR+ SGND ADPG MUTE SGD1 VL2+ VR2+ NTSI TXM- TXM+ TX2- TX2+ NTSC SGND ADPG2 SGD2 - CDX-M8027ZT/E MUTE CDL- CDL+ CDR- CDR+ SGND ADPG MUTE SGD1 VL2+ VR2+ NTSI...
  • Page 65 7.2 IC - Pin Functions (PD5765B) Pin No. Pin Name Format Function and Operation VDIN Power supply short sense input Not used IEIN AVC-LAN data input IEOUT AVC-LAN data output IEPW AVC-LAN driver power supply control output LSI data detect signal output XSCK LSI clock output LSI data output...

  • Page 66: Explanation

    Be careful in handling them because they are very liable to be damaged by electrostatic induction. 7.3 EXPLANATION 7.3.1 SYSTEM BLOCK DIAGRAM +B, ACC AVC-LAN +B, ACC SPEAKER NAVI AMPLIFIER 1DIN AVC-LAN HEAD UNIT OTHER MAKERS PIONEER or OTHER MAKERS OTHER MAKERS AVC-LAN CD-CH CDX-M8127ZT/WL CDX-M8027ZT/E CDX-M8127ZT/WL...

  • Page 67: Operational Flow Chart

    7.3.2 OPERATIONAL FLOW CHART Reset Start The magazine is loaded? Completion DISC detection Detecting YES (To the smallest disc no.) Are there discs sensed? Press the EJECT key Completion Shifting to the Mech. waiting mode EJECT processing Processing Completion Press the EJECT key. No discs in the magazine Completion Shifting to the Mech.

  • Page 68: Cleaning

    PIONEER ELECTRONICS (USA) 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 2002 K-ZZY. AUG. 2002 Printed in Japan...

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