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Toyota CRT2242 Service Manual

Audio system power amplifier for lexus sc300, lexus sc400,
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S
ervice
M anua l
AUDIO SYSTEM
POWER AMPLIFIER
VEHICLE
DESTINATION
LEXUS SC300,
U.S.A., CANADA
LEXUS SC400
Manufactured for TOYOTA
by PIONEER ELECTRONIC CORPORATION
SC300,400
PRODUCED AFTER
TOYOTA PART No.
August 1998
86280-24210
ORDER NO.
CRT2242
ID No.
PIONEER MODEL No.
GM-8886ZT/UC,
GM-8886ZT-91/UC
CRT2242
PUB. NO.

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Summary of Contents for Toyota CRT2242

  • Page 1 M anua l ORDER NO. CRT2242 SC300,400 AUDIO SYSTEM POWER AMPLIFIER VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS SC300, U.S.A., CANADA August 1998 86280-24210 GM-8886ZT/UC, LEXUS SC400 GM-8886ZT-91/UC Manufactured for TOYOTA CRT2242 by PIONEER ELECTRONIC CORPORATION...

  • Page 2: Table Of Contents

    BUS+ BUS- NOTE: - The GM-8886ZT-91/UC 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 GM-8886ZT-91/UC and GM-8886ZT/UC. - The supplementary model is identical with the original ones except for the following items.

  • Page 3: Exploded Views And Parts List

    GM-8886ZT ,8886ZT-91 2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR 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.

  • Page 4: Schematic Diagram

    GM-8886ZT ,8886ZT-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 PD5452A Detailed page +0.93 +7.13 -13.87...
  • Page 5 GM-8886ZT ,8886ZT-91...
  • Page 6 GM-8886ZT ,8886ZT-91...
  • Page 7 GM-8886ZT ,8886ZT-91...
  • Page 8 GM-8886ZT ,8886ZT-91...
  • Page 9 GM-8886ZT ,8886ZT-91...

  • Page 10: Pcb Connection Diagram

    GM-8886ZT ,8886ZT-91 4. PCB CONNECTION DIAGRAM 4.1 DSP UNIT NOTE FOR PCB DIAGRAMS 1. The parts mounted on this PCB 2. Viewpoint of PCB diagrams 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 11 GM-8886ZT ,8886ZT-91 SIDE A CN905...
  • Page 12 GM-8886ZT ,8886ZT-91 DSP UNIT...
  • Page 13 GM-8886ZT ,8886ZT-91 SIDE B...
  • Page 14 GM-8886ZT ,8886ZT-91 AMP UNIT CN52...
  • Page 15 GM-8886ZT ,8886ZT-91 SIDE A CN51...
  • Page 16 GM-8886ZT ,8886ZT-91 AMP UNIT...
  • Page 17 GM-8886ZT ,8886ZT-91 SIDE B...

  • Page 18: Electrical Parts List

    GM-8886ZT ,8886ZT-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 19 GM-8886ZT ,8886ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S473J RS1/10S562J RS1/10S102J RS1/10S103J RS1/10S473J RS1/10S102J RS1/10S473J RS1/10S473J RS1/10S473J RS1/10S333J RS1/10S473J RS1/10S472J RS1/10S473J RS1/10S471J RS1/10S102J RS1/10S683J RS1/10S102J RS1/10S103J RS1/10S473J RS1/10S222J RS1/10S104J...
  • Page 20 GM-8886ZT ,8886ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CEAL101M10 CEALNP220M16 CKSQYB104K50 CEALR68M50 CEALNP4R7M16 CEAL100M16 CEALNP4R7M16 CEAL470M10 CEALNP4R7M16 CEAL100M16 CEALNP4R7M16 CEALNP100M10 CEALNP4R7M16 CEAL220M10 CEALNP4R7M16 CEJA101M10 CEALNP4R7M16 CEJA470M10 CEALNP4R7M16 CEJA470M10 CEAL100M16...
  • Page 21 GM-8886ZT ,8886ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RESISTORS RS1/10S473J RS1/10S104J RS1/10S153J RS1/8S222J RS1/10S153J RS1/10S473J RS1/10S333J RS1/10S104J RS1/10S333J RS1/10S103J RS1/10S153J RS1/10S6R8J RS1/10S103J RS1/10S102J RS1/10S103J RS1/10S102J RS1/10S103J RS1/10S472J RS1/10S153J RS1/10S153J...
  • Page 22 GM-8886ZT ,8886ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSQYB102K50 CKSQYB102K50 CKSQYB102K50 CKSQYB102K50 CFTNA154J50 CKSQYB102K50 CFTNA154J50 CKSQYB102K50 CFTNA154J50 CKSQYB102K50 CFTNA154J50 CEAS221M16 1.0µF/50V CCH1296 1.0µF/50V CCH1296 CEJAR47M50 CEJAR22M50 CEJA1R0M50 CEJA2R2M50 CEJA470M16...

  • Page 23: Adjustment

    GM-8886ZT ,8886ZT-91 6. ADJUSTMENT - Jigs GGD1153...
  • Page 24 GM-8886ZT ,8886ZT-91 ASL SECTION Preset conditions 1. Set VR601 and VR602 around the center of the adjustable range. 2. Ground pins 3 and 16 of IC601. Step Input Output Adjustment (MIC) (Pin 22) Adj.point Spec. Conditions By using an oscillator, apply a sine Observe the output at VR602 1.3±0.3V...

  • Page 25: General Information

    GM-8886ZT ,8886ZT-91 7. GENERAL INFORMATION 7.1 IC TA8221AH1 NJM78M08FA...
  • Page 26 GM-8886ZT ,8886ZT-91 PD2055A...
  • Page 27 GM-8886ZT ,8886ZT-91 Pin Functions (PD5452A) Pin No. Pin Name Format Function and Operation ASLIN Difference of noise and signal input TLMT TEL mute input AVCIN AVC-LAN data input AVCOUT AVC-LAN data output AVCPW AVC-LAN driver power supply output DSPACK DSP-IC ACK input DSPCK DSP serial clock output DSPDT...

  • Page 28: Diagnosis

    GM-8886ZT ,8886ZT-91 7.2 DIAGNOSIS 7.2.1 DISASSEMBLY Case Removing the Case Heat Sink 1. Remove the Seal marked with arrows. 2. Remove the seven screws A, seven screws B, remove the Case and Heat Sink. Shield Removing the DSP Unit 1. Remove the three screws C, and remove the upper Shield.

  • Page 29: Connector Function Description

    GM-8886ZT ,8886ZT-91 7.2.2 CONNECTOR FUNCTION DESCRIPTION CDL+ CDR+ TXM+ SGND MUTE CDL- SGD4 MUTE CDR- TXM- BUS+ BUS- TLMT...

  • Page 30: Explanation

    GM-8886ZT ,8886ZT-91 7.3 EXPLANATION 7.3.1 BLOCK DIAGRAM...

  • Page 31: System Block Diagram

    GM-8886ZT ,8886ZT-91 7.3.2 SYSTEM BLOCK DIAGRAM FUSE ECU IG RADIO#1 RADIO#2 PANEL SPEAKERS THEOSTAT TW SP GM-8886ZT ILL+ ILL+ (RH) 5CH AMP ILL- ILL- KEX-M8886ZT FR SP HEAD UNIT (RH) Shield MOTOR ANT AMP+ AMP+ FR SP ANTA ANTA (LH) ANTB ANTB GND(S)

  • Page 32: Service Mode For Dsp Amplifier

    GM-8886ZT ,8886ZT-91 7.3.3 Service Mode For DSP Amplifier 1. Outline This specifications details operation according to our suggestion for answering complaint about sound quality in audio systems. It is based on an assump- tion that a dealer or service person operate the prod- uct to solve the problem.
  • Page 33 GM-8886ZT ,8886ZT-91 Sound Quality Service mode Displaying "AUDIO" FM1/2 TAPE Displaying "P1 XXX" Displaying "F XX" FM1/2 TAPE Displaying "P2 XXX" Displaying "R XX" FM1/2 TAPE Displaying "L XX" Displaying "W XX" FM1/2 TAPE Frequency characteristics Level adjustment function adjustment function Flowchart of displays in Sound Quality Adjustment mode...

  • Page 34: Operations And Specifications

    GM-8886ZT ,8886ZT-91 5. Details 1 Frequency characteristics adjustment function 2 level adjustment function • The system changes submodes cyclically every • The system changes submodes cyclically every time the [FM1/2] button is pressed when time the [TAPE] button is pressed when "AUDIO" "AUDIO"...

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