Pioneer Audio System Power Amplifier Service Manual
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Pioneer Audio System Power Amplifier Service Manual

Pioneer Audio System Power Amplifier Service Manual

For lexus gx470; land cruiser prado
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Service
Manual
LAND CRUISER PRADO
AUDIO SYSTEM
POWER AMPLIFIER
VEHICLE
LAND CRUISER PRADO UK, Ireland
LEXUS GX470
LAND CRUISER PRADO Europe
LAND CRUISER PRADO UK, Ireland
Manufactured for TOYOTA
by PIONEER CORPORATION
DESTINATION
PRODUCED AFTER
September 2002
U.S.A., Canada
November 2002
September 2002
September 2002
GX470
TOYOTA PART No. ID No. PIONEER MODEL No.
86280-60280
86280-60290
86280-60310
86280-60300
ORDER NO.
CRT2889
GM-8027ZT/WL
GM-8027ZT/E
GM-8127ZT/EW
GM-8127ZT/WL
CRT2889
PUB. NO.

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  • Page 1 ORDER NO. CRT2889 GX470 LAND CRUISER PRADO AUDIO SYSTEM POWER AMPLIFIER VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LAND CRUISER PRADO UK, Ireland September 2002 86280-60280 GM-8027ZT/WL LEXUS GX470 U.S.A., Canada November 2002 86280-60290 GM-8027ZT/E...
  • Page 2 For details, refer to "Important symbols for good services". GM-8027ZT/WL...
  • Page 3 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: Specifications

    CONTENTS SAFETY INFORMATION..........3 7. GENERAL INFORMATION........41 1. SPECIFICATIONS ............4 7.1 DIAGNOSIS ............41 2. EXPLODED VIEWS AND PARTS LIST ......6 7.1.1 DISASSEMBLY.........41 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..8 7.1.2 ..44 CONNECTOR FUNCTION DESCRIPTION 4. PCB CONNECTION DIAGRAM........16 7.2 IC ................45 5.
  • Page 5 GM-8027ZT/WL...

  • Page 6: Exploded Views And Parts List

    2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR GM-8027ZT/WL...
  • Page 7 NOTE: - Parts marked by “*” are generally unavailable because they are not in our Master Spare Parts List. - Screws adjacent to ∇ mark on the product are used for disassembly. - 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 SECTION PARTS LIST Mark No.

  • Page 8: Block Diagram And Schematic Diagram

    3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM AMP UNIT DSP UNIT CN102 CN905 CRYSTAL FRONT-L FRONT OSCILLATOR PRE AMP POWER AMP FRONT DAC FRONT LPF IC701 (FLP) IC231 IC241 IC261 FLIN IC801 IC311 L901 AK4321VF NJM2068MD PAL006A TC7WU04F TC7W74FU NJM2068MD (FLM)
  • Page 9 GM-8027ZT/WL...
  • Page 10 3.2 SCHEMATIC 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 DSP UNIT Guide page A/D CONVERTER Detailed page MICROPHONE UNIT POWER AMP AMP UNIT A B C GM-8027ZT/WL...
  • Page 11 NOTE : Symbol indicates a resistor. 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.
  • Page 12 GM-8027ZT/WL...
  • Page 13 GM-8027ZT/WL...
  • Page 14 GM-8027ZT/WL...
  • Page 15 GM-8027ZT/WL...

  • Page 16: Pcb Connection Diagram

    4. PCB CONNECTION DIAGRAM 4.1 DSP UNIT NOTE FOR PCB DIAGRAMS 2.Viewpoint of PCB diagrams 1.The parts mounted on this PCB include all necessary parts for Capacitor Connector several destination. For further information for SIDE A respective destinations, be sure to check with the schematic dia- gram.
  • Page 17 SIDE A CN905 FRONT GM-8027ZT/WL...
  • Page 18 DSP UNIT GM-8027ZT/WL...
  • Page 19 SIDE B GM-8027ZT/WL...
  • Page 20 4.2 AMP UNIT AMP UNIT CN101 GM-8027ZT/WL...
  • Page 21 SIDE A CN102 GM-8027ZT/WL...
  • Page 22 AMP UNIT GM-8027ZT/WL...
  • Page 23 SIDE B GM-8027ZT/WL...
  • Page 24 4.3 MICROPHONE UNIT SIDE B MICROPHONE UNIT SIDE A MICROPHONE UNIT CN401 GM-8027ZT/WL...

  • Page 25: Electrical Parts List

    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 26 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S104J RS1/10S101J RS1/16S102J RS1/10S101J RS1/16S102J RS1/10S123J RS1/16S102J RS1/10S123J RS1/16S102J RS1/10S103J RS1/10S102J RS1/10S103J RS1/10S102J (GM-8027ZT/WL) RS1/10S243J RS1/10S473J (GM-8127ZT/WL,GM-8027ZT/E,GM-8127ZT/EW) RS1/10S104J RS1/10S303J RS1/10S473J (GM-8027ZT/WL) RS1/10S243J (GM-8127ZT/WL,GM-8027ZT/E,GM-8127ZT/EW)
  • Page 27 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSQYB103K50 CKSQYB104K25 CKSQYB152K50 CEJQ101M10 CKSQYB152K50 CEJQ221M6R3 CEJQ101M10 CKSQYB104K25 CKSQYB104K25 CKSQYB332K50 CEJQ100M16 CEJQ221M6R3 CKSQYB104K25 CKSQYB104K25 CEJQ101M10 CKSQYB104K25 CKSQYB104K25 CEJQ101M10 CKSQYB104K25 CKSQYB102K50 CCSQCH101J50 CKSQYB103K50 CCSQCH101J50...
  • Page 28 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSQYB473K16 Diode 1SS355 CEJQ2R2M50 Diode 1SS355 CEJQ1R0M50 Diode ERA15-02VH CKSQYB474K25 Diode UDZS5R6(B) CKSQYB474K25 Diode HZU4R3(B3) CEJQ100M16 Diode MA152WK CKSQYB104K25 Diode 1SS355 CKSQYB102K50 Diode...
  • Page 29 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- RS1/10S474J CCSQCH101J50 RS1/10S101J CCSQCH101J50 RS1/10S101J CCSQCH101J50 RS1/10S101J CKSQYB473K25 RS1/10S101J CKSQYB473K25 RS1/10S101J CCSQCH101J50 (GM-8027ZT/WL,GM-8127ZT/WL) RS1/10S472J CCSQCH101J50 (GM-8027ZT/E,GM-8127ZT/EW) RS1/10S182J (GM-8027ZT/WL) CCSQCH101J50 (GM-8027ZT/WL,GM-8127ZT/WL) RS1/10S472J (GM-8027ZT/E) CCSQCH221J50 (GM-8027ZT/E,GM-8127ZT/EW) RS1/10S182J (GM-8127ZT/WL,GM-8127ZT/EW) CCSQCH271J50 (GM-8027ZT/WL,GM-8027ZT/E) RS1/10S102J (GM-8027ZT/WL) CCSQCH101J50 (GM-8127ZT/WL,GM-8127ZT/EW) RS1/10S272J...
  • Page 30 =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- CKSQYB473K25 CEAT4R7M50 CKSQYB471K50 CKSQYB104K25 CSZSR3R3M35 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB392K50 CKSQYB221K50 CKSQYB221K50 CKSQYB221K50 CKSQYB221K50 CKSQYB221K50 CKSQYB221K50 Unit Number : CWM8205 Unit Name : Microphone Unit MIC 401...
  • Page 31 6. ADJUSTMENT - Jigs GGD1153 (14P) GGD1245 (18P) GM-8027ZT/WL...
  • Page 32 - Connection Diagram KEX-M8527ZT/UC EMV(DENSO) GGD1305 GGD1239 Bullet connector Bullet connector (To DC Regulated Power Supply) (To DC Regulated Power Supply) GM-8027ZT/E 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...
  • Page 33 - Connection Diagram KEX-M8527ZT/UC EMV(DENSO) GGD1302 GGD1239 Bullet connector (To DC Regulated Power Supply) GM-8027ZT/E 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 CDX-M8027ZT/E *Please connect only one Multi CD at the same time *MCD does not operate if RSA controller is not connected.
  • Page 34 - Connection Diagram KEX-M8527ZT/UC EMV(DENSO) GGD1304 GGD1300 GGD1239 Bullet connector (To DC Regulated Power Supply) GM-8027ZT/E 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+ Bullet connector (To DC Regulated Power Supply) CDX-M8027ZT/E...
  • Page 35 - Connection Diagram FX-MG8527ZT/UC GGD1305 Bullet connector (To DC Regulated Power Supply) Bullet connector GM-8027ZT/E (To DC Regulated Power Supply) GGD1169 GGD1240 Bullet connector SP Line GGD1306 SDVD(PANA) RSE-ECU AV Unit Rear Display(F-TEN) Bullet connector (To DC Regulated Power Supply) GM-8027ZT/WL...
  • Page 36 - Connection Diagram FX-MG8527ZT/UC GGD1302 Bullet connector (To DC Regulated Power Supply) GM-8027ZT/E Bullet connector (To DC Regulated Power Supply) GGD1240 GGD1169 Bullet connector SP Line RSA Controller GM-8027ZT/WL...
  • Page 37 - Connection Diagram FX-MG8527ZT/UC GM-8027ZT/E GGD1240 GGD1169 Bullet connector Bullet connector (To DC Regulated Power Supply) SP Line - Connection Diagram GM-8027ZT/E(L) GM-8027ZT/WL(R) FX-MG8527ZT/EW(L) GM-8127ZT/EW(L) FX-MG8627ZT/EW(R) GM-8127ZT/WL(R) GGD1240 GGD1169 Bullet connector Bullet connector (To DC Regulated Power Supply) SP Line GM-8027ZT/WL...
  • Page 38 - Connection Diagram KEX-M8527ZT/EW(L) KEX-M8627ZT/EW(R) EMV(DENSO) GGD1304 GGD1300 GGD1239 Bullet connector (To DC Regulated Power Supply) GM-8027ZT/E(L) GM-8027ZT/WL(R) Bullet connector 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)
  • Page 39 6.1 ASL SECTION ADJUSTMENT Note: 1) Only if ASL parts (shaded ones below) get changed, you need adjustments for ASL. 2) When you disconnect the connector for ASL, you need to be careful. Refer to the sentence and the figure below. When you disconnect the Cord Assy (CDE6990) that connects between DSP PCB and Microphone PCB, get your hand on the connector.
  • Page 40 Preset conditions 1. Set VR401 around the center of the adjustable range. Input Output Adjustment (MIC) (Pin 74 : test point "ASL1") Adj.point Spec. By using the jig(CAN-906,CAN-912), Observe the output at VR401 314±30mV apply a sine wave of 100dBSPL ALS1 on a audio analyzer voltage directly to the MIC terminal.

  • Page 41: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case (Fig.1) Case Remove the two screws and then remove the Case. Notes the Cover (Fig.1) Never remove the Cover unless you need to do so because it is firmly adhered to the chassis with double-faced tape.
  • Page 42 Removing the Shield Case (Fig.4) Remove the five screws and then remove the Shield Case. Shield Case Fig.4 Amp Unit Removing the Amp Unit (Fig.5) Remove the six screws. Remove the two screws and then remove the Heat Sink. Notes) Remove the Heat Sink without removing the Cover in Fig.1.
  • Page 43 - “Pawl bending and soldering” points of the pawls for securing the base plate of a shielded case (bot- tom case). • The portion marked by is a point in which pawl bending and soldering are not performed. (Faulty pawl bending point) •...

  • Page 44: Connector Function Description

    7.1.2 CONNECTOR FUNCTION DESCRIPTION WFL+ WFR+ WFL- WFR- (TX+) (TX+) TMUT TML+ N-MU (SPD) ASGD MUTE (TX-) (TX-) (MUTE) GM-8027ZT/WL...
  • Page 45 7.2 IC - Pin Functions (PD5726A, PD5792A) Pin No. Pin Name Format Function and Operation MUTE Mute output VCS2 SN761029 strobe output VCS1 PM0017AM strobe output Data output for electronic volume Clock output for electronic volume CVNSS Connect to VSS MODEL0 R handle /L handle select input Not used...

  • Page 46: System Block Diagram

    7.3 EXPLANATION 7.3.1 SYSTEM BLOCK DIAGRAM 1. 2DIN 1-1 2DIN +B, ACC AVC-LAN +B, ACC SPEAKER AMPLIFIER 2DIN HEAD UNIT AVC-LAN PIONEER or OTHER MAKERS 1-2 2DIN RSA (OPTION) +B, ACC SPEAKER (OPTION) AMPLIFIER 2DIN REAR SEAT HEAD HEAD UNIT AUDIO...
  • Page 47 2. 1DIN +B, ACC 2-1 1DIN AVC-LAN +B, ACC SPEAKER NAVI AMPLIFIER 1DIN AVC-LAN HEAD UNIT OTHER MAKERS PIONEER or OTHER MAKERS OTHER MAKERS AVC-LAN CD-CH 2-2 1DIN +B, ACC SPEAKER AMPLIFIER 1DIN AVC-LAN HEAD UNIT OTHER MAKERS PIONEER AVC-LAN...
  • Page 48 +B, ACC 2-4 1DIN RSA (OPTION) AVC-LAN +B, ACC SPEAKER NAVI AMPLIFIER 1DIN AVC-LAN HEAD UNIT OTHER MAKERS PIONEER or OTHER MAKERS OTHER MAKERS AVC-LAN CD-CH 2-5 1DIN RSE (OPTION) +B, ACC SPEAKER NAVI NTSC AMPLIFIER 1DIN HEAD UNIT AVC-LAN...

  • Page 49: Operational Flow Chart

    7.3.2 OPERATIONAL FLOW CHART Reset Start---OFF ---Power ON START | Hard ware reset cancel <<JUDGMENT>> Pin 27 LOW input Test program check(Unit checker) - Pin 27 HI/LOW input Pin 17 LOW input Pin 16 LOW input Pin 27 HI input Pin 17 LOW input Pin 16 LOW input Unit checker program...
  • Page 50 - DSP error check (Normal) DSPCS1(Pin70) DSPCS2(Pin69) DSPCK(Pin26) 4mS interval (Periodical communication) DSPCS1 DSPCS2 DSPCK - DSP error check ---Error continuation DSPRST(Pin67) About 1S interval GM-8027ZT/WL...
  • Page 51 8. OPERATIONS There is no information to be shown in this chapter. GM-8027ZT/WL...
  • Page 52 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-ZZB. AUG. 2002 Printed in Japan...

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