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Pioneer RX300 Service Manual

Audio system power amplifier
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Service
Manual
AUDIO SYSTEM
POWER AMPLIFIER
VEHICLE
DESTINATION
LEXUS RX300
USA, CANADA
EUROPE
Manufactured for TOYOTA
by PIONEER CORPORATION
RX300
PRODUCED AFTER
TOYOTA PART No.
August 2000
86280-48050
86280-48040
ORDER NO.
CRT2496
ID No.
PIONEER MODEL No.
GM-8706ZT/UC
GM-8706ZT-91/UC
GM-8306ZT/EW
GM-8306ZT-91/EW
CRT2496
PUB. NO.

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Summary of Contents for Pioneer RX300

  • Page 1 Service Manual ORDER NO. CRT2496 RX300 AUDIO SYSTEM POWER AMPLIFIER VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS RX300 USA, CANADA August 2000 86280-48050 GM-8706ZT/UC EUROPE GM-8706ZT-91/UC 86280-48040 GM-8306ZT/EW GM-8306ZT-91/EW Manufactured for TOYOTA CRT2496 by PIONEER CORPORATION...

  • Page 2: Table Of Contents

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 GM-8706ZT/UC, GM-8306ZT/EW NOTE: - The GM-8706ZT-91/UC and GM-8306ZT-91/EW are supplementary genuine part for a TOYOTA vehicle, and a Pioneer product for recycling stock. - As for the electrical system, there is no difference between the GM-8706ZT-91/UC, GM-8306ZT-91/EW and GM- 8706ZT/UC, GM-8306ZT/EW.

  • Page 3: Safety Information

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-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

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR (GM-8706ZT/UC)
  • Page 5 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-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 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No.
  • Page 6 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 2.2 EXTERIOR (GM-8306ZT/EW)
  • Page 7 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 (1) EXTERIOR SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BMZ30P060FMC 11 Screw(M3x6) CBA1393 2 Screw 12 Connector(CN101) CKM1074 See Contrast table(2) 3 Screw(M2.6x14) CBA1384 13 Connector(CN102) CKM1222 4 Screw(M3x14) CBA1427 14 Bracket CNC7145 5 Chassis CNA1938...

  • Page 8: Block Diagram And Schematic Diagram

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM (GM-8706ZT/UC) MAIN UNIT FIX EQ CN101 L801 Q221,225 <BEEP> BOOST Q223,227 BEEP CN102 POWER AMP Q141 IC201 IC203 IC101 PMUTE NJM2068MD FLIN IC104 CDL+ NJM2068MD CDL- NJM2068MD PMJ002A IC401 MUTE TDA7384 EMUT TMUT...
  • Page 9 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 3.2 BLOCK DIAGRAM (GM-8306ZT/EW) AMP UNIT FIX EQ CN101 L801 Q221,225 <BEEP> BOOST Q223,227 BEEP CN102 POWER AMP Q141 IC201 IC203 IC101 PMUTE NJM2068MD FLIN IC104 CDL+ NJM2068MD CDL- NJM2068MD IC401 PMJ002A MUTE PAL006A EMUT TMUT Q805 Q143 IC202 IC204 RLIN NJM2068MD...
  • Page 10 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 3.3 SCHEMATIC DIAGRAM (GM-8706ZT/UC) 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 -24.0dBs -25.4dBs Detailed page -29.0dBs 1kHz -25.5dBs 1kHz woofer: -22.0dBs 50Hz -24.5dBs 50Hz -25.5dBs -13.5dBs 50Hz...
  • Page 11 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 MAIN UNIT BALANCE INPUT -20dBs f-1kHz f-50Hz -25.5dBs +1.0dBs BALANCE OUTPUT front:+1.0dBs f-1kHz rear:+4.0dBs f-1kHz woofer:+10.0dBs f-50Hz front: -24.8dBs rear: -22.0dBs 0dBs =0.775 Vrms -20dBs=77.5 mVrms NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values discrete resistors.
  • Page 12 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 13 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 14 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 15 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 16 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 3.4 SCHEMATIC DIAGRAM (GM-8306ZT/EW) -24.0dBs -25.1dBs -21.2d -21.2d -25.2dBs 500Hz -18.4dB -22.7dBs 500H 500Hz...
  • Page 17 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 BALANCE INPUT AMP UNIT -20dBs f-500Hz -25.2dBs BALANCE OUTPUT front:+5.2dBs f-500Hz rear:+7.7dBs f-500Hz 2dBs 2dBs 00Hz 00Hz 00Hz NOTE : Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and and capacitor fixed values discrete resistors.
  • Page 18 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 19 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 20 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...
  • Page 21 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91...

  • Page 22: Pcb Connection Diagram

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 4. PCB CONNECTION DIAGRAM 4.1 MAIN UNIT(GM-8706ZT/UC), AMP UNIT(GM-8306ZT/EW) NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB 2. Viewpoint of PCB diagrams include all necessary parts for several destination. Capacitor Connector For further information for SIDE A respective destinations, be sure to check with the schematic dia- gram.
  • Page 23 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 SIDE A...
  • Page 24 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 MAIN UNIT(GM-8706ZT/UC) AMP UNIT(GM-8306ZT/EW)
  • Page 25 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 SIDE B...

  • Page 26: Electrical Parts List

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-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 27 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S511J RS1/10S0R0J RS1/10S511J RS1/10S0R0J RS1/10S181J RS1/10S912J RS1/10S181J RS1/10S912J RS1/10S153J RS1/10S472J RS1/10S472J RS1/10S472J RS1/10S472J RS1/10S332J RS1/10S472J RS1/10S332J RS1/10S123J RS1/10S751J RS1/10S152J RS1/10S751J RS1/10S473J RS1/10S122J...
  • Page 28 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S473J CKSQYB221K50 RS1/10S473J CKSQYB221K50 RS1/10S102J CKSQYB221K50 RS1/10S102J CKSQYB221K50 RS1/8S101J CEAL100M16 RS1/8S101J CEAL100M16 RS1/10S153J CKSQYB152K50 RS1/10S8R2J CKSQYB152K50 RS1/10S102J CEAL3R3M25 RS1/8S472J CEAL3R3M25 RS1/8S222J CKSQYB392K50...
  • Page 29 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSQYB334K16 CKSQYB473K25 CKSYB224K25 CKSQYB473K25 CKSYB224K25 CEAS220M10 CCSQCH330J50 CEAS1R0M50 CCSQCH330J50 CKSQYB222K50 CKSYB154K25 CKSQYB222K50 CKSYB154K25 CEAS332M16 CKSYB823K50 CEHAQ1R0M50 CKSYB823K50 CKSQYB103K50 CKSYB273K25 CKSQYB103K50 CKSYB273K25 CEHAQ331M10...
  • Page 30 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Transistor DTC114EK RS1/10S512J Transistor 2SD1757K RS1/10S512J Chip Transistor 2SC2712 RS1/10S512J Chip Transistor 2SC2712 RS1/10S113J Transistor DTA114EK RS1/10S113J Diode ERA15-02VH RS1/10S133J Diode UDZ5R6(B)
  • Page 31 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S753J RS1/10S472J RS1/10S753J RS1/10S103J RS1/10S753J RN1/10SE5602D RS1/10S332J RS1/10S103J RS1/10S332J RS1/10S104J RS1/10S332J RS1/10S103J RS1/10S332J RS1/10S103J RS1/10S242J RS1/10S103J RS1/10S242J RN1/10SE4702D RS1/10S242J RS1/10S222J RS1/10S242J RS1/10S103J...
  • Page 32 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CEAS2R2M50 CKSQYB272K50 CKSQYB473K25 CKSQYB272K50 CKSQYB104K25 CKSQYB272K50 CKSQYB103K50 CKSQYB272K50 CCSQCH121J50 CKSQYB103K50 CCSQCH121J50 CKSQYB473K25 CKSQYB334K16 CKSQYB221K50 CKSQYB334K16 CKSQYB221K50 CKSQYB334K16 CEAS471M16 CKSQYB334K16 CKSQYB473K25 CKSYB224K25 CEAS221M6R3...

  • Page 33: Adjustment

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 6. ADJUSTMENT - Connection Diagram KEX-M8006ZT/UC KEX-M8106ZT/EW Display KEX-M8186ZT/EW GGD1238 DSP AMP GM-8706ZT/UC GM-8306ZT/EW Integrated Panel GGD1167 CD Changer CDX-M9086ZT/E...

  • Page 34: General Information

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 DISASSEMBLY Removing the Case(not shown) 1. Remove the Seal. 2. Remove the two screws, and remove the Case. Removing the Heat Sink(Fig.1) 1. Remove the two screws A, two screws B, and two screws C.

  • Page 35: Connector Function Description

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 7.1.2 CONNECTOR FUNCTION DESCRIPTION GM-8706ZT/UC +B ACC WFR+ FL+ FL- FR+ FR- GND WF- WF+ WFR- GM-8306ZT/EW +B ACC FL+ FL- FR+ FR- GND CDL+ MUTE EMUT SGND TMUT SGD2 CDR+ CDR- CDL-...
  • Page 36 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 7.2 IC PAL006A (GM-8306ZT/EW) Protector; Over voltage Reference amp_vcc Stand-by P-GND2 Circuit OUT2- Offset Protector; STBY Detection Thermal OUT2+ OUT1- Offset P-GND1 Detection OUT1+ Protector; S-GND Short circuit AC-GND OUT3+ Offset P-GND3 Detection OUT3- OUT4+ Offset MUTE Detection OUT4- P-GND4 SWITCH Protector;...
  • Page 37 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 TA8221AH1A (GM-8706ZT/UC) TDA7384 (GM-8706ZT/UC)
  • Page 38 GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 - Pin Functions (PD5607B) Pin No. Pin Name Format Function and Operation Not used AVCIN AVC-LAN data input AVCOUT AVC-LAN data output AVCPW AVC-LAN driver power supply output 6-12 Not used BEEP Beep tone output ASENS ACC power sense input BSEN Back up power sense input SYSPW...

  • Page 39: Explanation

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 7.3 EXPLANATION 7.3.1 OPERATIONAL FLOW CHART Reset Start---OFF ---Power ON START | Hard ware reset cancel <<JUDGMENT>> TESTIN LOW input Test program check(Unit checker) - TESTIN HI/LOW input ASENS LOW input BSENS LOW input TESTIN HI input ASENS HI input BSENS HI input Unit checker program <<JUDGMENT>>...

  • Page 40: System Block Diagram

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 7.3.2 SYSTEM BLOCK DIAGRAM POWER SUPPLY(+B, ACC) AUDIO GM-8706ZT/UC KEX-M8006ZT/UC GM-8306ZT/EW KEX-M8106ZT/EW DISPLAY HEAD POWER AMPLIFIER UNIT (MADE BY FUJITSU TEN) CDX-M9086ZT-02/EW CDX-M9086ZT-02/E INTEGRATED PANEL (MADE BY SUMITOMO ELECTRIC) VEHICLE...

  • Page 41: Specifications

    GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91 8. SPECIFICATIONS Power source ... . .13.2±0.1V(10.5-16.0V) Grounding ....NEGATIVE TYPE Electrode dark current ..1mA or less(13.2V) Dimensions (No bracket) .
  • Page 42 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-ZZB. JULY 2000 Printed in Japan...

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