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Pioneer FX-MG8606ZT/UC Service Manual

Pioneer audio system head unit for lexus lx470
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Service
Manual
AUDIO SYSTEM
HEAD UNIT
VEHICLE
DESTINATION
LEXUS LX470
U.S.A., CANADA
LEXUS LX470
U.S.A., CANADA
LEXUS LX470
U.S.A., CANADA
LEXUS LX470
U.S.A., CANADA
Manufactured for TOYOTA
by PIONEER CORPORATION
LX470
PRODUCED AFTER
TOYOTA PART No.
August 2000
86120-60290
August 2000
86120-60290
August 2000
86120-60420
August 2000
86120-60420
ORDER NO.
CRT2541
ID No.
PIONEER MODEL No.
P6808
FX-MG8606ZT/UC
P6808
FX-MG8606ZT-91/UC
P6809
FX-MG8706ZT/UC
P6809
FX-MG8706ZT-91/UC
CRT2541
PUB. NO.

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Summary of Contents for Pioneer FX-MG8606ZT/UC

  • Page 1 Service Manual ORDER NO. CRT2541 LX470 AUDIO SYSTEM HEAD UNIT VEHICLE DESTINATION PRODUCED AFTER TOYOTA PART No. ID No. PIONEER MODEL No. LEXUS LX470 U.S.A., CANADA August 2000 86120-60290 P6808 FX-MG8606ZT/UC LEXUS LX470 U.S.A., CANADA August 2000 86120-60290 P6808 FX-MG8606ZT-91/UC LEXUS LX470 U.S.A., CANADA...

  • Page 2: Table Of Contents

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 FX-MG8606ZT/UC FX-MG8706ZT/UC ID No.P6809 ID No.P6808 - This service manual should be used together with the following manual(s): Model No. Order No. Mech. Module Remarks CX-631 CRT1640 Cassette Mech. Module:Mech.Description, Disassembly CX-890 CRT2376 CD Mech. Module:Circuit Description, Mech.Description, Disassembly - Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
  • Page 3 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CD Player Service Precautions 1. Never attempt to turn on this unit when the CD drive mechanism is upside down. Doing so could cause damage or malfunction to the drive mechanism. 2. For pickup unit(CXX1313) handling, please refer to"Disassembly"(see page 81).

  • Page 4: Safety Information

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-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 5: Exploded Views And Parts List

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 2. EXPLODED VIEWS AND PARTS LIST 2.1 EXTERIOR...
  • Page 6 10 Connector(CN701) CKS3989 60 Connector CNV6428 11 Connector(CN702) CKS4376 61 Knob Unit CXB5578 12 Main Unit CWM7161 62 Grille Unit CXB6484 (FX-MG8606ZT/UC) 13 Screw BMZ30P060FMC 62 Grille Unit CXB6485 (FX-MG8706ZT/UC) 14 Screw(M3x6) CBA1393 63 Screw BPZ20P080FMC 15 Terminal(CN800) CKF1059 64 Door...
  • Page 7 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 2.2 CD MECHANISM...
  • Page 8 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CD MECHANISM SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1-9 ••••• 59 Gear CNC7236 10 CD Core Unit(Servo Unit) CWX2421 60 Gear CNC8883 11 Connector(CN101) CKS2764 61 Lever CNC7243 12 Connector(CN301) CKS3966 62 Lever CNC7244 13 Connector(CN201)
  • Page 9 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Mark No. Description Part No. Mark No. Description Part No. 109 Screw CBA1041 159 Screw CBA1453 110 Screw CBA1250 160 Washer CBF1038 111 Screw CBA1362 CXX1457 Loading Arm R Assy(Service) 112 Screw CBA1471 162 Washer CBF1074 113 Washer CBF1038 163 Spring CBH2136 114 Spring...
  • Page 10 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 2.4 CASSETTE MECHANISM MODULE...
  • Page 11 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CASSETTE MECHANISM MODULE SECTION PARTS LIST Mark No. Description Part No. Mark No. Description Part No. 1 Screw BSZ20P040FMC 31 Gear ENV1347 2 Washer CBF1037 32 Collar ENV1508 3 Washer CBF1038 33 Gear ENV1350 4 Washer CBG1003 34 Flywheel ENV1500 5 Deck Unit EWM1030...

  • Page 12: Block Diagram And Schematic Diagram

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM 3.1 BLOCK DIAGRAM MAIN UNIT FM/AM TUNER UNIT AM NOISE CANCELER IC 553 FM/AM 1ST IF 10.7MHz FM FRONT END HA12181FP AMDET T31 Q31 CF51 CF52 CF53 ANT2 SUB ANTENNA Q403 9 10 ANT1 MAIN ANTENNA Q201 Q202...
  • Page 13 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 BALANCE TO UNBALANCE CONVERTER ANALOG SWITCH MIXING AMP IC305 SYSTEM MUTE TC74HC4066AF IC301 IC302 IC303 TUNL NJM2068MD NJM2068MD NJM2068MD Q401 Q402 Q307(2/2) Q305 Q303 ILL+ ILL- SW5V ANT+ Q405(2/2) FMMUT Q307(1/2) Q308 MUTE Q861 ldet HARD MUTE TUNB 8R5V AVC-LAN MUTE Q801 CN801...
  • Page 14 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.2 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 MAIN UNIT : -46.9dBs : -18.6dBs : +1.8dBs FM/AM TUNER UNIT MAIN TAPE : -8.24dBs...
  • Page 15 FX-MG8606ZT,MG8606ZT- 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. BALANCE TO UNBALANCE CONVERTER ← No differentiation is made between chip capacitors and 0.022 R022 discrete capacitors.
  • Page 16 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91...
  • Page 17 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91...
  • Page 18 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91...
  • Page 19 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91...
  • Page 20 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.3 FM/AM TUNER UNIT FM/AM TUNER UNIT FM FRONT END AM OSC FM OSC AM RF FM,AM FM,AM...
  • Page 21 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 FM,AM FM IF...
  • Page 22 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.4 KEYBOARD UNIT KEYBOARD UNIT...
  • Page 23 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 TRAF RWR VOL AUDIO TUNE...
  • Page 24 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.5 CD CORE UNIT(SERVO UNIT) CD CORE UNIT(SERVO UNIT) RF AMP/ AUTO POWER PICKUP UNIT CONTROL (SERVICE)(P8) CD DRIVER MOTOR PCB(B) M4 CARRIAGE CXB3178 DISC INSERT DETECT M5 SPINDLE CXM1120...
  • Page 25 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 FOCUS/TRACKING CARRIAGE/SPINDLE DIGITAL SERVO DIGITAL SIGNAL PROCESSOR D/A CONVERTER...
  • Page 26 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.6 CD CORE UNIT(STS UNIT) CD CORE UNIT(STS UNIT) SURE TRACK MEMORY CONTROLLER +5V REGULATOR M1 : CXB3174 ELV SENSE Q1 : RPI-221 M3 : CXB3175 MOTOR PCB MOTOR DRIVER...
  • Page 27 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 D/A CONVERTER ROLLER 4M DRAM MOTOR DRIVER...
  • Page 28 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Note:1. The encircled numbers denote measuring pointes in the circuit diagram. 2. Reference voltage REFOUT:2.5V - Waveforms 1 RFO 1 RFO 1 CH1: RFO 0.5V/div. 0.2µs/div. 0.5V/div. 0.5µs/div. 1V/div. 0.5ms/div. 2 CH2: MIRR Normal mode: play Test mode 5V/div. Normal mode: The defect part passes 500µs/div.
  • Page 29 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3 CH1: FIN 1V/div. 8 CH1: TEY 8 CH1: TEY 0.5V/div. 0.5V/div. 0.2s/div. 5ms/div. 500µs/div. $ CH2: HOLD 6 CH2: FEY ! CH2: SD 5V/div. 0.1V/div. 0.5V/div. µ Normal mode: The defect part passes 800 Normal mode: AGC after focus close REFOUT→...
  • Page 30 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 8 CH1: TEY 8 CH1: TEY 0.5V/div. 0.5V/div. & SCKO 2V/div. 500ns/div. 5ms/div. 10ms/div. 9 CH2: TIN 9 CH2: TIN 0.5V/div. 0.5V/div. Test mode: 100 tracks jump(FWD) Normal mode: Play Play REFOUT→ REFOUT→ REFOUT→ REFOUT→ REFOUT→ ) CH1: RCH 2V/div.
  • Page 31 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.7 PCB UNIT(A,B,C,D,E), LOAD MOTOR PCB PCB UNIT(B) PCB UNIT(E) PCB UNIT(C) CPT230SCTD MAX DETECT SWITCH PCB UNIT(A) CN802 CPT230SCTD CXB3177 PCB UNIT(D) S886:CSN1052 S887:CSN1051 LOAD MOTOR PCB...

  • Page 32: Cassette Mechanism Module

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.8 CASSETTE MECHANISM MODULE DECK UNIT CN252 VR302 CCP1280 Q271 33K(B) 2SC4116 R260 R258 C253 390P Rev-L R284 0R0 R275 R256 C254 390P Rev-R MSGV(R) NFI(L) R283 0R0 R403 C405 R03 MAOUT RIN(L) C271 R287 C404 R01 IC251 Fwd-R R282 0R0 R404 1/50...
  • Page 33 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 PCB UNIT M1 MOTOR UNIT (MAIN MOTOR) CN253 EXA1499 LOAD R375 load ESG1004 70µs R373 ESG1004 4116 R277 220K R362 R275 MODE SENSE C405 R033 R404 270K EGN1 EGN1005 CN254 MOTOR UNIT (SUB MOTOR) EGN2 EGN3 VCC2 EXA1382 EGN1006 EGN1006 FWD END REV END...
  • Page 34 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 3.9 CONTROL UNIT CONTROL UNIT CD CONTROLLER...
  • Page 35 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91...

  • Page 36: Pcb Connection Diagram

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4. PCB CONNECTION DIAGRAM 4.1 MAIN UNIT MAIN UNIT 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 37 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE A 12 13 14 15 16 17 18 19...
  • Page 38 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 MAIN UNIT...
  • Page 39 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B...
  • Page 40 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.2 FM/AM TUNER UNIT SIDE A...
  • Page 41 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B...
  • Page 42 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.3 KEYBOARD UNIT SIDE A...
  • Page 43 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B...
  • Page 44 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.4 CD CORE UNIT(SERVO UNIT) SIDE A PICKUP UNIT (SERVICE)
  • Page 45 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B...
  • Page 46 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.5 CD CORE UNIT(STS UNIT) CD CORE UNIT(STS UNIT) SIDE A...
  • Page 47 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B CD CORE UNIT(STS UNIT)
  • Page 48 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.6 MOTOR PCB(A) SIDE A MOTOR PCB(A) M3 ELV M1 CAM GEAR ELV SENSE CN201...
  • Page 49 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B MOTOR PCB(A) CN801...
  • Page 50 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.7 MOTOR PCB(B) SPINDLE MOTOR MOTOR PCB(B)
  • Page 51 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 CN301 CARRIAGE...
  • Page 52 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.9 PCB UNIT(D) 4.8 PCB UNIT(B) PCB UNIT(B) PCB UNIT(D) CN802 S887 CLAMP S886 ELV HOME...
  • Page 53 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.10 PCB UNIT(C) Q881 PCB UNIT(C) S885 MAX DETECT D883...
  • Page 54 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.11 LOAD MOTOR PCB LOAD MOTOR PCB LOAD 4.12 PCB UNIT(A) PCB UNIT(A) D892 D891...
  • Page 55 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.13 PCB UNIT(E) PCB UNIT(E) PCB UNIT(E) SIDE A SIDE B...
  • Page 56 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.14 DECK UNIT DECK UNIT CN301 SIDE A CN251 C271 C321 DECK UNIT SIDE B IC,Q Q352 R292 R358 VR301 Q271 Q352 C353 VR301 Q271 Q351 R373 Q351 R278 R284 C356 CN252 R374 R375 R276 R356 R281 R277 CN253 IC251 R282 IC251...
  • Page 57 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.15 PCB UNIT SIDE A PCB UNIT LOAD SW 70µs SW MODE SENSE EGN1 SIDE B PCB UNIT 6 5 4 3 2 1 MOTOR UNIT (MAIN MOTOR) 4.16 REEL PCB REEL PCB...
  • Page 58 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 4.17 CONTROL UNIT SIDE A...
  • Page 59 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 SIDE B...

  • Page 60: Electrical Parts List

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 5. ELECTRICAL PARTS LIST NOTES: - 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 61 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S223J CKSRYB103K25 RS1/16S393J CKSRYB562K25 RS1/16S104J CKSQYB104K16 RS1/16S0R0J CEAL3R3M50 RS1/16S242J CKSQYB104K16 RS1/16S473J CEAL3R3M50 RS1/16S103J CKSYB474K16 RS1/16S104J CEAL220M6R3 RS1/16S104J CKSQYB104K16 RS1/16S103J CKSQYB104K16 RS1/16S202J CEAL3R3M50...
  • Page 62 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Transistor FMG13 Diode 1SS355 Transistor FMG13 Diode UDZS5R6(B) Transistor FMG13 Diode RM4LFJ10 Transistor DTA114EK Diode 1SS355 Transistor IMD3A Diode UDZ20(B) Transistor DTC144TK...
  • Page 63 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S392J RS1/10S102J RS1/10S222J RS1/10S223J RS1/10S392J RS1/10S103J RS1/10S272J RS1/10S104J RS1/10S102J RS1/10S153J RS1/10S102J RS1/10S392J RS1/10S102J RS1/10S272J RS1/10S102J RS1/10S272J RS1/10S103J RS1/10S222J RS1/10S473J RS1/10S222J RS1/10S105J RS1/10S222J...
  • Page 64 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S473J RS1/10S471J RS1/10S102J RS1/10S102J RS1/10S681J RS1/10S223J RS1/10S102J RS1/10S221J RS1/10S473J RS1/10S331J RA2CQ102J RS1/10S471J RS1/10S473J RS1/10S102J RS1/10S0R0J RS1/4S1R5J RS1/10S473J RS1/4S1R5J RS1/10S102J RS1/4S1R5J RS1/10S472J RS1/4S1R5J...
  • Page 65 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- CKSQYB103K50 CKSQYB222K50 CKSQYB471K50 CKSQYB222K50 CKSQYB104K50 CKSQYB103K50 CEAL4R7M35 CKSQYB103K50 CKSQYB473K50 CEAL100M16 CCSQCH220J50 CKSQYB472K50 CCSQCH220J50 CEAL100M16 CKSQYB472K50 CKSQYB473K50 CKSQYB104K50 CEAL2R2M50 CKSQYB105K16 CKSQYB102K50 CKSQYB104K50 CKSQYB103K50...
  • Page 66 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- 100µF/10V CCH1402 RS1/10S512J CKSQYB103K50 RS1/10S104J 100µF/10V CCH1282 RS1/10S154J CKSQYB103K50 RS1/10S183J CKSQYB472K50 RS1/10S102J 100µF/10V CCH1402 CAPACITORS CKSQYB472K50 100µF/10V CCH1402 CKSQYB103K50 CKSYB102K50 CKSQYB103K50 CKSQYB102K50...
  • Page 67 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Encoder CSD1056 RESISTORS Encoder CSD1048 LCD 901 CAW1595 RS1/8S100J RS1/8S120J RESISTORS RS1/16S822J RS1/16S682J RS1/16S473J RS1/16S183J 47kΩ CCN1131 1kΩ CCN1120 RS1/16S822J 1kΩ...
  • Page 68 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S102J CKSRYB682K50 RS1/16S102J CKSRYB333K16 RS1/16S102J CKSQYB334K16 RS1/16S471J CKSQYB334K16 RS1/16S101J CKSQYB334K16 RS1/16S101J CKSQYB334K16 RS1/16S471J CKSQYB104K16 RS1/16S471J CKSRYB472K50 RS1/10S100J CKSQYB104K16 RS1/16S471J CCSRCH5R0C50 RS1/16S471J CKSRYB153K25...
  • Page 69 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 =====Circuit Symbol and No.===Part Name Part No. =====Circuit Symbol and No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/10S103J Unit Number : RS1/10S102J Unit Name : Motor PCB(A) RS1/10S622J RS1/8S181J Photo-interrupter RPI-221 RS1/8S0R0J Motor Unit(Cam Gear) CXB3174 Motor Unit(ELV) CXB3175 RS1/8S0R0J...

  • Page 70: Adjustment

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 6. ADJUSTMENT 6.1 TUNER, CASSETTE SECTION - Connection Diagram FX-MG8706ZT/UC FX-MG8606ZT/UC(PRE) GGD1240 GGD1241 BULLET CONNECTOR GGD1169 DVD-CH XDV-M8106ZT/UC GM-8406ZT/UC When XDV-M8106ZT/UC is repaired.
  • Page 71 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 BACK UP +13.2V DC Regulated Power Supply Lch + 4Ω Lch - Oscilloscope (1) mV Meter (1) GM-8406ZT/UC Rch + 4Ω Rch - Dummy Antenna Antenna Plug 50Ω(37.5Ω) Stereo FM SSG Modulator 50Ω(75Ω) MAIN UNIT Antenna Jack Extention Cord GGD1121 DECK UNIT CN251 DC V...
  • Page 72 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 FM ADJUSTMENT Modulation M:MONO MOD., 400Hz 30%(22.5kHz Dev.) S1:STEREO MOD., 1kHz, L or R=30%(20.25kHz+7.5kHz Dev.) S2:STEREO MOD., 1kHz, L or R=60%(40.5kHz+7.5kHz Dev.) NOTE:Before proceeding to further adjustments after switching power ON, let the tuner run for ten minutes to allow the circuits to stabilize.
  • Page 73 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 AM NOISE CANCELER ADJUSTMENT Connection: Output FX-MG8606ZT/UC 2-signal pad AM dummy Noise meter FX-MG8706ZT/UC Pulse generator (equivalent to HP8011A) Setting of the pulse generator (setting of superimposed pulse) Pulse width :50usec 4Vp-p(EMF) Pulse intervals :5msec 50us Pulse voltage :4Vp-p Adjustment: 1.

  • Page 74: Checking The Grating After Changing The Pickup Unit

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 6.2 CHECKING THE GRATING AFTER CHANGING THE PICKUP UNIT • Note : The grating angle of the PU unit cannot be adjusted after the PU unit is changed. The PU unit in the CD mechanism module is adjusted on the production line to match the CD mechanism module and is thus the best adjusted PU unit for the CD mechanism module.
  • Page 75 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90°...

  • Page 76: General Information

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 TEST MODE - CD Test Mode 1) Precautions on Adjustment 2) Description of the Test Mode • The unit employs a single voltage (+5V) for the • Turning on the Test Mode regulator, thus the reference potential of the signal is See page 77.
  • Page 77 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CD Player Flow Chart [Key] [1] + [6] + [DISC] 3 times Diag. Mode In Contents Display [SEEK UP] + [AM] Test Mode In PBUS TEST [DISC] 3sec Diag. off [CD] or [DISC] Source CD [TYPE] [MSG] Power ON Power ON Mechanism Test Mode New Test Mode...
  • Page 78 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CD Mechanism Test Mode Flow Chart [Key] [1] + [6] + [DISC] 3 times Diag. Mode In Contents Display [SEEK UP] + [AM] Test Mode In PBUS TEST [DISC] 3sec Diag. off [CD] or [DISC] Source CD [MSG] [TYPE] CD Test Mode New Test Mode...
  • Page 79 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Operating Procedures for Ejecting a Clamped Disc Select CAMMOTOR using [1], then press the [SEEK/SKIP-] while the disc is being clamped (CAMSW state is 32). The CAMSW status indication sequentially changes through 32→33→23→22. When the disc to be ejected is not identical with the disc being clamped, select the [2 ] ELVMOTOR in the vicinity of where the display changes from 22 to 20, then match the elevation to the disc to be ejected according to the following procedures: After selecting ELVMOTOR, lower the elevation until the ELV position display becomes 01 (1st disc) using the [SEEK/SKIP-].
  • Page 80 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Code Name Description Door OPENING While the mechanism is in operation, should have been closed a door was opened. Roller OFF time-out 4 seconds have elapsed before completing the roller OFF (the cam gear has not been rotated to the roller-OFF end position). Roller SET time-out 4 seconds have elapsed before completing the roller SET.

  • Page 81: Disassembly

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.1.2 DISASSEMBLY - Removing the Case and Grille Assy (Fig.1) 1. Remove the four screws A, and then remove the Case. 2. Remove the two screws B 3. Remove the eight stoppers. 4. Disconnect the connector, and then remove the Grille Assy. Case Grille Assy Connector...
  • Page 82 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - Removing the Cassette Mechanism Section (Fig.3) 1. Remove the eight screws E. 2. Remove the connector, and then remove the Cassette Mechanism Section. - Removing the Cassette Mechanism Module (not shown) 1. Remove the four screws, and then Cassette Mechanism Module. Cassette Mechanism Section Fig.3 - Removing the Control Unit (Fig.4)
  • Page 83 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - Removing the Main Unit 1. Unbend the tabs at four locations indicated by arrows until straight. 2. Remove the screw H, and then remove the Main Unit. Main Unit - How to remove the Tray Assy 3. Lift up the Tray assy to remove it. 1.
  • Page 84 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - How to remove the Carriage Mech Assy * When the positions of all holes match, they will be 1. Insert a short pin into the flexible PCB of the Pickup completely covered by the Carriage mech assy. unit. * To rotate the Cam Gear motor, see "How to remove 2.
  • Page 85 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - How to remove the Pickup unit 1. Remove the pulling spring, torsion spring and E- Pulling spring shaped ring. Then remove the Clamper arm. E-shaped ring * The spring (A) will be removed with the Clamper Clamper arm arm.

  • Page 86: Pcb Locations

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.1.3 PCB LOCATIONS MOTOR PCB(A) MOTOR PCB(B) PCB UNIT(B) CD CORE UNIT(SERVO UNIT) CD CORE UNIT(STS UNIT) LOAD MOTOR PCB PCB UNIT(D) PCB UNIT(A) PCB UNIT(C) PCB UNIT(E) FM/AM TUNER UNIT MAIN UNIT CONTROL UNIT PCB UNIT REEL PCB KEYBOARD UNIT DECK UNIT...

  • Page 87: Connector Function Description

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.1.4 CONNECTOR FUNCTION DESCRIPTION SUB ANTENNA MAIN ANTENNA GND TXM- TXM+ ILL- ILL+ MUTE SGND SGND MUTE...

  • Page 88: Parts

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.2 PARTS 7.2.1 IC - Pin Functions (PD5594A) Pin No. Pin Name Function and Operation SD level input from tuner MDSN Modulation level input BLIGHT Back Light ON/off LAMP Lamp power supply control output LCD driver data output LCD driver data input Clock output for LCD driver BYTE Connect to VSS...
  • Page 89 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Pin No. Pin Name Function and Operation ENC2- AUD encoder (-) input dload CDM load key input LAMP power supply control output Power supply terminal RECIVE During RDS data reception output RDSMUTE RDS mute output AMMUTE AM mute output FMMUTE FM mute output Door switch input...
  • Page 90 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - Pin Functions (PD5575B) Pin No. Pin Name Format Function and Operation VDIN Power supply short sensor input doorsw Door open position SW input Not used bsrq P-BUS service request output clamp DISC clamp SW input elhome ELV reset position SW input XSCK CD LSI clock output CD LSI data output...
  • Page 91 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 Pin No. Pin Name Format Function and Operation Not used VREF A/D converter reference voltage input AVSS A/D GND ADRMON The remainder amount address monitor input EREF DRAM A/D reference voltage output Disc photo sense input 1 Disc photo sense input 2 Disc photo sense input 3 ELVSNS ELV position photo sense input...
  • Page 92 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 HA12216F NFI(L) MSGV(R) Dolby B-N RIN(L) MAOUT FIN(L) MSDET MSOUT FIN(R) MSGV VREF RIN(R) 120/70 Dolby B-N NFI(R)

  • Page 93: Display

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.2.2 DISPLAY - CAW1595...

  • Page 94: Explanation

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.3 EXPLANATION 7.3.1 SYSTEM BLOCK DIAGRAM - PIONEER System Front:50Wx2/3.5Ω HEAD UNIT 6ch DSP Rear:50Wx2/3.5Ω FX-MG8706ZT/UC GM-8406ZT/UC Woofer:50Wx2/3.5Ω - MARK LEVINSON System HEAD UNIT MARK LEVINSON FX-MG8606ZT/UC MARK LEVINSON...

  • Page 95: Operational Flow Chart

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 7.3.2 OPERATIONAL FLOW CHART Power ON VDD=5V 16pin, 62pin bsens 75pin asens 73pin IPPW 22pin Starts communication with AVC-LAN. swvdd 45pin brst 39pin Starts communication with G1 microcomputer. Source Keys operative Source ON syspw 52pin Completes power-on operation. (After that, proceed to each source operation.)

  • Page 96: Operations And Specifications

    FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 8. OPERATIONS AND SPECIFICATIONS 8.1 OPERATIONS - RADIO PRESET RECALL SCAN RADIO TEXT INDICATE PRESET CH.MEMORY PRESET SCAN RADIO TEXT MEMORY RDS ON/OFF MANUAL SEEK PTY INDICATE DOWN TUNING BALANCE FADER BASS TREBLE MID RANGE VOLUME, TRAFFIC POWER ON/OFF INFORMATION - TAPE FAST...
  • Page 97 FX-MG8606ZT,MG8606ZT-91,MG8706ZT,MG8706ZT-91 - CD RANDOM DISC NUMBER FAST UP SELECT PLAY FAST TRACK DISC SCAN CD EJECT CD LOAD DOWN DISC TRACK SCAN REPEAT DOWN TRACK NUMBER SEARCH DOWN TUNING BALANCE FADER BASS TREBLE MID RANGE VOLUME, POWER ON/OFF...

  • Page 98: Specifications

    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-ZZD. JULY 2000 Printed in Japan...

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