Page 1
Service Manual ORDER NO. CRT2539 LS430 AUDIO SYSTEM HEAD UNIT VEHICLE DESTINATION PRODUCED AFTER ID No. TOYOTA PART No. PIONEER MODEL No. LEXUS LS430 U.S.A.,CANADA August 2000 P6811 86120-50670 FX-MG9006ZT/UC FX-MG9006ZT-91/UC LEXUS LS430 U.S.A.,CANADA August 2000 P6815 86120-50660 FX-MG9506ZT/UC FX-MG9506ZT-91/UC...
ID No. P7801 NOTE: - FX-MG9006ZT-91/UC, FX-MG9506ZT-91/UC, FX-MG9006ZT-91/EW and FX-MG9006ZT-91/ES are supplementary genuine part for a TOYOTA vehicle, and a Pioneer product for recycling stock. - Supplementary model is identical to the original except for the addition of following items. Part No.
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 - This service manual should be used together with the following manual(s): Model Order No. Mech. Module Remarks CX-890 CRT2376 CD Mechanism Module:Circuit Description, Mech.Description, Disassembly CX-631 CRT1640 Cassette Mech. Module:Mech.Description, Disassembly - Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation. "Dolby"...
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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 7
- 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 (FX-MG9006ZT/UC,FX-MG9506ZT/UC) Mark No. Description Part No.
Page 8
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 Mark No. Description Part No. 89 Spring CBH2361 90 Spring CBH2365 91 Spring Uint CXB6850 92 Connector CDE6302 93 Chassis CNA2131 94 Holder CNC7477 95 Holder CNC7826 96 Holder CNC8160 97 Holder CNC8161 98 Holder CNC8162 99 Mechanism Assy(Service)CXX1430 100 Sheet CNM5981 101 Insulator...
Page 17
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 2.4 CD MECHANISM...
Page 18
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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 19
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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 25
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 NOTE : UNBALANCE TO BALANCE CONVERTER Symbol indicates a resistor. Decimal points for resistor No differentiation is made between chip resistors and ANALOG SWITCH and capacitor fixed values discrete resistors. are expressed as : ← Symbol indicates a capacitor. ←...
Page 30
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 3.3 KEYBOARD UNIT, SW UNIT KEYBOARD PCB UC, EW : CAW1591 ES : CAW1582...
Page 31
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 KEYBOARD UNIT Consists of KEYBOARD PCB BACKLIGHT PCB S902 S903 S904 S908 S916 S920 TRAF TYPE SCAN P.SCAN FM1/2 SCAN CN804 BACKLIGHT S922 S923 SW UNIT CDEJ LOAD CDEJ LOAD LOAD CDEJ...
Page 32
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 3.4 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 33
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 FOCUS/TRACKING CARRIAGE/SPINDLE DIGITAL SERVO DIGITAL SIGNAL PROCESSOR D/A CONVERTER...
Page 34
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 3.5 CD CORE UNIT(STS UNIT) CD CORE UNIT(STS UNIT) SURE TRACK MEMORY CONTROLLER +5V REGULATOR M1 : CXB6929 ELV SENSE Q1 : RPI-221 M3 : CXB3175 MOTOR PCB MOTOR DRIVER...
Page 35
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 D/A CONVERTER ROLLER 4M DRAM MOTOR DRIVER...
Page 36
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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 37
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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 38
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-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.
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 4. PCB CONNECTION DIAGRAM MAIN UNIT 4.1 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 43
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 SIDE A CN701 CN251 FRONT...
Page 44
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 MAIN UNIT...
Page 45
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 SIDE B...
Page 65
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 PCB UNIT SIDE A LOAD SW 70µs SW MODE SENSE EGN1 PCB UNIT SIDE B 6 5 4 3 2 1 CN253 MOTOR UNIT (MAIN MOTOR) REEL PCB...
=====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- Unit Number : CWM6852 Transistor DTA114EK (FX-MG9006ZT/UC) 2SJ517 (FX-MG9506ZT/UC) Transistor DTC123YK : CWM6853 Chip Transistor 2SC2712 (FX-MG9006ZT/EW) Transistor DTC114EK : CWM6857 (FX-MG9006ZT/ES)
Page 67
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 =====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RESISTORS 1kΩ CCN1120 47kΩ CCN1131 RS1/10S102J RS1/10S122J RA2CQ102J RS1/10S122J RA3C102J RS1/10S473J RS1/10S473J 1kΩ CCN1120 RS1/10S123J RS1/10S473J RS1/10S473J RS1/10S123J RS1/10S102J RS1/10S183J RA2CQ473J RS1/10S183J...
Page 68
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 =====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/8S472J 4.7µF/35V CCH1016 RS1/8S222J 4.7µF/35V CCH1016 RS1/8S472J CCSQCH330J50 RS1/8S221J CCSQCH330J50 RS1/10S473J CKSQYB331K50 RS1/10S104J CKSQYB331K50 RS1/10S473J CKSQYB682K50 RS1/10S104J CKSQYB682K50 RS1/10S473J CKSQYB682K50 RS1/10S104J CKSQYB682K50...
Page 69
CKSQYB102K50 Keyboard Unit CKSQYB474K16 Consists of Keyboard PCB CKSQYB103K50 Backlight PCB CCSQCH101J50 CCSQCH101J50 Unit Number : CWM6865 (FX-MG9006ZT/UC) Unit Number : CWX2421 (FX-MG9506ZT/UC) Unit Name : CD Core Unit(Servo Unit) (FX-MG9006ZT/EW) : CWM6864 MISCELLANEOUS (FX-MG9006ZT/ES) Unit Name : Keyboard Unit...
Page 70
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 =====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RESISTORS CKSRYB682K50 CKSRYB333K16 CKSQYB334K16 RS1/8S100J CKSQYB334K16 RS1/8S120J CKSQYB334K16 RS1/16S822J RS1/16S682J CKSQYB334K16 RS1/16S183J CKSQYB104K16 CKSRYB472K50 RS1/16S822J CKSQYB104K16 RS1/16S333J CCSRCH5R0C50 RS1/16S683J RS1/16S134J CKSRYB153K25 RS1/16S273J...
Page 71
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 =====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/16S102J Unit Number : RS1/16S102J Unit Name : Motor PCB(B) RS1/16S102J RS1/16S471J Motor Unit(Carriage) CXB3178 RS1/16S101J Motor(Spindle) CXM1120 RS1/16S101J Unit Number : RS1/16S471J Unit Name...
Page 72
FX-MG9006ZT,MG9006ZT-91,MG9506ZT,MG9506ZT-91 =====Circuit Symbol & No.===Part Name Part No. =====Circuit Symbol & No.===Part Name Part No. ------ ------------------------------------------ ------------------------- ------ ------------------------------------------ ------------------------- RS1/8S0R0J Unit Number : RS1/8S0R0J Unit Name : Reel PCB RS1/8S0R0J RS1/8S0R0J Photo-Interrupter EGN1006 RS1/8S0R0J Photo-Interrupter EGN1006 RS1/8S0R0J Miscellaneous Parts List RS1/8S0R0J RS1/8S0R0J Pickup Unit(Service)(P8)
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-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.
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-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-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - CD Player Flow Chart [Key] [1] + [6] + [DISC] 3 times Diag. Mode In Contents Display [TRACK UP] + [AM] Test Mode In PBUS TEST EW model ES model [MSG] [ASL] [P.SCAN] [DISC] 3sec [TYPE] [PTY] [ASL] Diag.
Page 78
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - CD Mechanism Test Mode Flow Chart [Key] [1] + [6] + [DISC] 3 times Diag. Mode In Contents Display [TRACK UP] + [AM] Test Mode In PBUS TEST EW model ES model [DISC] 3sec [MSG] [ASL] [P.SCAN] Diag. off [TYPE] [PTY] [ASL]...
Page 79
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 Operating Procedures for Ejecting a Clamped Disc Select CAMMOTOR using [3], then press the [TRACK DOWN] 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 [4 ] 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 [TRACK DOWN].
Page 80
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-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.
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 7.1.2 SELF-DIAGNOSTIC FUNCTION Audio System Service Test Operation procedures Purpose of operation Procedure How to enter service Press the "Disc" (or "CD") button three times with the ch "1" and "6" buttons of the H/U test mode (Head Unit) pressed at the same time. (When the service test mode is switched, a beep sound is output.
Page 82
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 1. Transition of "service test mode" display Physical address P190 Self diagnosis Diagnostic memory TUNE DOWN TUNE UP Display of results (OK) good TUNE DOWN TUNE UP Physical address P360 System test result request Diagnostic memory request TUNE DOWN TUNE UP Display of results (Check) "Test"...
Page 83
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 2. Transition of "Test detailed information display mode" or "Exchange detailed information display mode" display • If the ch "2" button is pressed when "CHEC" (test) or "ECHn" (exchange) is displayed, each detailed information display mode is entered. • To switch from each detailed information display mode to the "service test mode", press the ch "3" button. •...
Page 84
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - "Exchange" detailed information screen Connecting equipment: Radio cassette (PA = 190), CD - CH (PA = 360), MD - CH (PA = 3A0) * If memory clear is executed in the P360 detailed information display mode, a diagnostic memory clear instruction is individually send to object equipment Service test mode and the service test mode is switched.
Page 85
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - "Test" detailed information display screen Connecting equipment: Radio cassette (PA = 190), CD - CH (PA = 360), MD - CH (PA = 3A0) * If memory clear is executed in the P3A0 detailed information display mode, a Service test mode diagnostic memory clear instruction is individually send to object equipment and...
Page 86
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - "Old Ver" detailed information display screen Connecting equipment: Radio cassette (PA = 190), CD - CH (PA = 360), MD - CH (PA = 3A0) * If memory clear is executed in the P3A0 detailed information display mode, a Service test mode diagnostic memory clear instruction is individually send to object equipment and...
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 7.1.3 DISASSEMBLY Case Removing the Case (Fig.1) Remove the six screws and then remove the Holder. Remove the two screws and then remove the Case. Holder Fig.1 Cassette Mechanism Module Removing the Grille Assy (Fig.2) Remove the two screws and then remove the Grille Assy.
Page 88
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 Removing the Chassis Unit (Fig.4) Remove the seven screws and then remove the Chassis Unit. Fig.4 Chassis Unit - Removing the Mechanism Assy (Fig.5) 1. Disconnect the Connector. 2. Remove the three screws A, and then remove the Holder and Damper. 3.
Page 89
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 - How to remove the Tray Assy 3. Lift up the Tray assy to remove it. 1. Apply about 6V current to the Cam gear motor until * Be careful not to remove the Tray hooks from the Tray all holes match at the position (A) (elevation OK assy.
Page 90
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 10. Remove the screw, pressure spring and collar. Lift up the Carriage mechanism assy to remove it. Screw * Screw tightening torque: 2.6kgfcm Pressure spring Collar Carriage mechanism Assy Fig.9 - How to remove the Pickup unit 1. Remove the pulling spring, torsion spring and E- Pulling spring shaped ring.
Page 91
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 8. Loosen the 2 screws. Remove the plate spring and the rack. Grease (Yellow: 9. Pull out the feed screw from the Pickup unit. PG-641) Plate spring Rack Feed screw Grease (White: KD-1) Grease (Yellow: PG-641) Pickup unit Fig.12...
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 7.1.4 PCB LOCATIONS MAIN UNIT KEYBOARD PCB BACKLIGHT PCB SW UNIT MOTOR PCB(B) MOTOR PCB(A) PCB UNIT(B) CD CORE UNIT(SERVO UNIT) CD CORE UNIT(STS UNIT) LOAD MOTOR PCB PCB UNIT(D) PCB UNIT(A) PCB UNIT(E) PCB UNIT PCB UNIT(C) REEL PCB DECK UNIT...
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 7.2 PARTS 7.2.1 IC - Pin Functions (PD5556B) Pin No. Pin Name Function and Operation LOFF LCD driver OFF output Not used BLIGHT Not used LAMP power supply control LCD driver data output Not used Clock output for LCD driver BYTE VCC joint CNVSS...
Page 95
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 Pin No. Pin Name Function and Operation Key strobe output kst$ KST3 Key strobe output kst@ Key strobe output kst! Key strobe output Key strobe output kst) Music sense input Head forward/reverse select output PLAY MS gain select output Cassette mechanism tape select input CDEJ CD eject key sense input...
Page 96
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-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 P-BUS service request output bsrq clamp DISC clamp SW input elhome ELV reset position SW input XSCK CD LSI clock output CD LSI data output...
Page 97
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-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 Disc photo sense input 1 Disc photo sense input 2 Disc photo sense input 3 ELVSNS ELV position photo sense input...
FX-MG9006ZT,M9006ZT-91,M9506ZT,M9506ZT-91 7.4 OPERATIONAL FLOW CHART Power ON VDD=5V 16pin, 62pin bsens 20pin asens 19pin IPPW 22pin Starts communication with AVC-LAN. swvdd 45pin brst 36pin Starts communication with G1 microcomputer. Source Keys operative Source ON Completes power-on operation. (After that, proceed to each source operation.)
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-ZZY. AUG. 2000 Printed in Japan...