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Pioneer FX-MG8057ZT/UC Service Manual
Pioneer FX-MG8057ZT/UC Service Manual

Pioneer FX-MG8057ZT/UC Service Manual

Lexus gs300, lexus s430 audio system head unit

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AUDIO SYSTEM
HEAD UNIT
VEHICLE
DESTINATION
LEXUS
U.S.A. , CANADA
GS300,GS430
LEXUS
U.S.A. , CANADA
GS300,GS430
LEXUS
U.S.A. , CANADA
GS300,GS430
LEXUS
U.S.A. , CANADA
GS300,GS430
Manufactured for TOYOTA
by PIONEER CORPORATION
GS300
GS430
PRODUCED
OEM PARTS No.
AFTER
January 2005
86120-30D00-C0
January 2005
86120-30D00-C0
January 2005
86120-30D00-E0
January 2005
86120-30D00-E0
ORDER NO.
CRT3361
ID No.
PIONEER MODEL No.
P6857
FX-MG8057ZT/UC
P6857
FX-MG8057ZT-91/UC
P6861
FX-MG8007ZT/UC
P6861
FX-MG8007ZT-91/UC
CRT3361
PUB.NO.

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Summary of Contents for Pioneer FX-MG8057ZT/UC

  • Page 1 ORDER NO. CRT3361 GS300 GS430 AUDIO SYSTEM HEAD UNIT PRODUCED VEHICLE DESTINATION OEM PARTS No. ID No. PIONEER MODEL No. AFTER LEXUS U.S.A. , CANADA January 2005 86120-30D00-C0 P6857 FX-MG8057ZT/UC GS300,GS430 LEXUS U.S.A. , CANADA January 2005 86120-30D00-C0 P6857 FX-MG8057ZT-91/UC...
  • Page 2 FX-MG8057ZT/UC FX-MG8007ZT/UC ID No.P6857 ID No.P6861 This service manual should be used together with the following manual(s): FX-MG8057ZT/UC Model No. Order No. Mech.Module Remarks CX-951 CRT2872 CD Mech. Module:Circuit Description, Mech. Description, Disassembly CX-1011 CRT2406 Cassette Mech. Module:Mech. Description, Disassembly Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
  • Page 3: Safety Information

    4. After replacing the pickup unit, be sure to check the 2. Before disassembling the unit, be sure to turn off grating. the power. Unplugging and plugging the connectors during power-on mode may damage the ICs inside the unit. FX-MG8057ZT/UC...
  • Page 4 To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual. FX-MG8057ZT/UC...
  • Page 5: Table Of Contents

    SAFETY INFORMATION............................3 1. SPECIFICATIONS .............................6 2. EXPLODED VIEWS AND PARTS LIST......................7 2.1 PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC) ................7 2.2 EXTERIOR(FX-MG8057ZT/UC, MG8057ZT-91/UC, MG8007ZT/UC, MG8007ZT-91/UC) ......8 2.3 SERVICE MECHANISM ASSY(1) ......................10 2.4 SERVICE MECHANISM ASSY(2) ......................12 2.5 CASSETTE MECHANISM MODULE .......................14 3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM ..................16 3.1 BLOCK DIAGRAM............................16...
  • Page 6: Specifications

    S/N ..............40dB or more Image interference........45dB or more Distortion.............3% or less CD player System ........Compact disc audio system Usable discs ..........Compact disc Signal format .....Sampling frequency : 44.1kHz ........Number of guantization : 16;linear S/N ..............80dB or more Distortion............0.2% or less FX-MG8057ZT/UC...
  • Page 7: Exploded Views And Parts List

    (In the case of no amount instructions,apply as you think it appropriate.) 2.1 PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC) PACKING(FX-MG8057ZT-91/UC, FX-MG8007ZT-91/UC) SECTION PARTS LIST Mark No. Description Part No. Air Cap CHW1945 Air Cap CHW1948 Cover CEG1045 Cover CEG1325 Carton CHG4861 Contain Box CHL4861 FX-MG8057ZT/UC...
  • Page 8: Exterior(Fx-Mg8057Zt/Uc, Mg8057Zt-91/Uc, Mg8007Zt/Uc, Mg8007Zt-91/Uc)

    2.2 EXTERIOR (FX-MG8057ZT/UC, MG8057ZT-91/UC, MG8007ZT/UC, MG8007ZT-91/UC) FX-MG8057ZT/UC...
  • Page 9 Screw IMS26P040FTC Screw PMH26P060FTC Screw BPZ20P080FTC Transistor(Q952,971,991) 2SB1185 Button(TAPE EJECT) See Contrast table(2) (2) CONTRAST TABLE FX-MG8057ZT/UC, FX-MG8007ZT/UC, FX-MG8057ZT-91/UC and FX-MG8007ZT-91/UC are constructed the same except for the following: FX-MG8057ZT/UC FX-MG8007ZT/UC Mark Description FX-MG8057ZT-91/UC FX-MG8007ZT-91/UC Button(TAPE EJECT) CAC8896 CAC9069 Button(LEFT UP)
  • Page 10: Service Mechanism Assy(1)

    2.3 SERVICE MECHANISM ASSY(1) 1:GEM1043 2:GEM1042 3:GEM1024 FX-MG8057ZT/UC...
  • Page 11 Tray Unit CXB6930 Lever Unit CXC1648 Lever Unit CXC1649 Lever Unit CXC1650 Lever Unit CXC1651 Cam Motor Assy CXB7522 Washer CBF1064 Gear CNV6610 Gear CNV6611 Motor Unit(M1) CXC1144 Screw JFZ20P020FTC Washer YE20FTC ELV Motor Assy CXB7523 Screw BMZ20P025FTC Washer CBF1064 FX-MG8057ZT/UC...
  • Page 12: Service Mechanism Assy(2)

    2.4 SERVICE MECHANISM ASSY(2) 1:GEM1043 2:GEM1042 FX-MG8057ZT/UC...
  • Page 13 CBF1037 Washer CBF1075 Spring CBH2450 Spring CBH2672 Spring CBH2457 Spring CBH2580 Frame CND1653 CND1654 Sheet CNM7295 Roller CNV6616 Collar CNV6617 Guide CNV6622 Holder CNV6636 Lever CNV6732 Lever CNV6733 Collar CNV6734 Holder CNV7144 Screw JFZ12P018FTC Washer CBF1037 Motor Unit CXC4220 FX-MG8057ZT/UC...
  • Page 14: Cassette Mechanism Module

    2.5 CASSETTE MECHANISM MODULE For grease application, refer to the service manual for CX-1011 (CRT2406). FX-MG8057ZT/UC...
  • Page 15 EWM1047 Plug(CN251) EKS1026 Gathering PCB ENX1080 Motor Unit(M1) EXA1618 Motor EXM1035 Head Assy(HD1) EXA1594 ENC1537 Screw EBA1031 Bracket ENC1559 Chassis Unit EXA1636 Pinch Holder Unit EXA1608 Pinch Roller ENV1518 Pinch Holder Unit EXA1607 Pinch Roller ENV1518 Reel Unit EXA1625 FX-MG8057ZT/UC...
  • Page 16: Block Diagram And Schematic Diagram

    CN14 M2 ELV adena TEMP VREF Q702(2/2) Q702(1/2) S32 CAMEOK CAMOK PCB UNIT S31 CAMLOAD CAMLOAD (LED) 3V REGULATOR IC 302 S-L2980A33MC-C6S VR11 ELVSNS VR1 ELV SENSE EREF CN13 PCB UNIT LOADPHT (LOAD) S21 LOAD1 LOADSW1 S22 LOAD2 LOADING FX-MG8057ZT/UC...
  • Page 17 CN601 LOUT Q602 Q603 CD MUTE Q601 BUFFER RAM IC502 HY57V161610ETP-8 C505(2/2) 4VHC541FT YMDATA, YMLD, YMCLK VCC2 CDMUTE BSI,BSO,BSCK,BRXEN,BSRQ,BRST RESET reset CN721 VDCONT VDCONT VDIN TEMP 5V REGULATOR 3V REGULATOR IC 302 IC 303 BA05SFP S-L2980A33MC-C6S FX-MG8057ZT/UC...
  • Page 18 DECK UNIT CN252 CN761 CN251 AUDIO+B EQ AMP TAPE+B L-ch IC251 CSL1 HA12216F L-ch CN254 MUTE MECHANISM MOTOR DRIVER BU13 STBY IC351 PA2020A CN255 MAIN LOAD MOTOR CN253 CN256 SENSOR UNIT Q101 REEL SENSE S101 S102 S103 LOAD 70µs MODE FX-MG8057ZT/UC...
  • Page 19 EC1+ EC2- EC2+ CSLOAD Q882 AC5V CN741 ILL13 CN991 Q911-Q926 Q991 EAUP AMBER GREEN EAUN Q951 reset MATRIX VR935 Q972(1/2) Q972(2/2) IC 951 TUNE KTS3 LC75700TS EVLP KEY CONTROLLER EVLN Q971 IDAB IDGW VR945 PWR•VOL IDAB IDGW KEYBOARD UNIT FX-MG8057ZT/UC...
  • Page 20: Overall Connection Diagram(Guide Page)

    Note: When ordering service parts, be sure to refer to " EXPLODED VIEWS AND PARTS LIST" or "ELECTRICAL PARTS LIST". FM : -22.2 dBs(400Hz,30%) AM : -12.2 dBs(400Hz,30%) Large size SCH diagram FM/AM ANTENNA Guide page Detailed page SYSTEM CONTROLLER CN991 CN251 CN601 TAPE : -7.2 dBs(315Hz, 25 CD : +2.2 dBs(1kHz, 0dB) FX-MG8057ZT/UC...
  • Page 21 : Therefore, when replacing, be sure to use parts of ← Symbol indicates a capacitor. identical designation. ← No differentiation is made between chip capacitors and 0.022 R022 discrete capacitors. FX-MG8057ZT/UC...
  • Page 22 FX-MG8057ZT/UC...
  • Page 23 FX-MG8057ZT/UC...
  • Page 24 FX-MG8057ZT/UC...
  • Page 25 FX-MG8057ZT/UC...
  • Page 26: Keyboard Unit

    3.3 KEYBOARD UNIT TAPE EJECT CD EJECT LOAD SCAN PWR•VOL TUNE FX-MG8057ZT/UC...
  • Page 27 KEYBOARD UNIT EJECT DISC TAPE JECT AM•SAT FX-MG8057ZT/UC...
  • Page 28: Cd Mechanism Module(Guide Page)

    LOAD1 LOADING MOTOR CAMGEAR MOTOR M1 CXC1144 PCB UNIT(LOAD) SIGNAL LINE FOCUS SERVO LINE TRACKING SERVO LINE CARRIAGE SERVO LINE SPINDLE SERVO LINE : The power supply is shown with the marked box. C D E F G H FX-MG8057ZT/UC...
  • Page 29 CONTROL UNIT(G2T) MUTE 3.3V-5V CONVERTER SHOCK PROOF MEMORY CONTROLLER & BUFFER RAM 3.3V REGULATOR MECHANISM CONTROLLER FX-MG8057ZT/UC...
  • Page 30 F G H FX-MG8057ZT/UC...
  • Page 31 FX-MG8057ZT/UC...
  • Page 32 CN721 FX-MG8057ZT/UC...
  • Page 33 FX-MG8057ZT/UC...
  • Page 34 CH3 : 8 TDX 4 Track Jump 1 Track Jump CH1 : 5 RFO Mode:Test CH1 : 5 RFO Mode:Test CH2 : 6 TE CH2 : 6 TE CH3 : 8 TDX CH3 : 8 TDX 10 Track Jump 32 Track Jump FX-MG8057ZT/UC...
  • Page 35 Memory capacity (remaining) at the starting of PLAY CH1 : $ RFO Mode:Normal CH1 : % LRCK Mode:Normal CH2 : 6 TE CH2 : ^ SCKO CH3 : & DOUT Memory capacity (remaining) during PLAY Digital audio data(x2 speed) FX-MG8057ZT/UC...
  • Page 36 CH2 : 8 TDX CH3 : ) SD CH4 : 4 EC Audio output(1kHz , 0dB) During inside / outside search CH1 : 1 FDX Mode:Normal CH2 : ! FOK CH3 : @ MDX CH4 : # FG DISC stop FX-MG8057ZT/UC...
  • Page 37 FX-MG8057ZT/UC...
  • Page 38: Cassette Mechanism Module

    Fwd-L R281 0R0 R273 MSGV FIN(R) C251 390P VREF DOLBY B NR RIN(R) 120/70 R255 R296 NFI(R) HEAD ASSY EXA1594 TEST TAPE NCT-150 R257 (400Hz, 200nWb/m) R259 VR301 CCP1280 33K(B) SGND MTL2 MUTE LOAD2 TAPE+B PLAY CN251 -8.24dBs(300mV)±1dB CN761 FX-MG8057ZT/UC...
  • Page 39 C354 SENSOR UNIT 270K PGND C355 VCC1 PSO3 VCC2 PSO2 C353 PSO1 PSI1 VCC2 PSI2 PSI3 C352 4700P MOTOR DRIVER STBY PGND2 B.UP LOAD2 SWITCHES: SENSOR UNIT S101:LOAD SWITCH..EJECT-PLAY S102:MODE SWITCH....ON-OFF S103:70µs SWITCH....ON-OFF The underlined indicates the switch position. FX-MG8057ZT/UC...
  • Page 40: Pcb Connection Diagram

    For further information for respective destinations, be sure to check with the schematic dia- gram. 2.Viewpoint of PCB diagrams CAR HARNESS CAR HARNESS Capacitor Connector SIDE A SIDE B Chip Part P.C.Board CN251 FX-MG8057ZT/UC...
  • Page 41 SIDE A CAR HARNESS RNESS CN991 FRONT FX-MG8057ZT/UC...
  • Page 42 MAIN UNIT FX-MG8057ZT/UC...
  • Page 43 SIDE B FX-MG8057ZT/UC...
  • Page 44: Keyboard Unit

    4.2 KEYBOARD UNIT SIDE A KEYBOARD UNIT FX-MG8057ZT/UC...
  • Page 45 SIDE B KEYBOARD UNIT CN741 FX-MG8057ZT/UC...
  • Page 46: Control Unit(G2T)

    4.3 CONTROL UNIT(G2T) SIDE A CONTROL UNIT(G2T) CN721 CN11 REFO FX-MG8057ZT/UC...
  • Page 47 SIDE B CONTROL UNIT(G2T) FX-MG8057ZT/UC...
  • Page 48: Pcb Unit(Led), Pcb Unit(Load)

    4.4 PCB UNIT(LED), PCB UNIT(LOAD) PCB UNIT (LED) PCB UNIT (LOAD) LOAD2 CN13 CN14 ELEVATION CAMOK CAMLOAD LOAD1 FX-MG8057ZT/UC...
  • Page 49: Pcb Unit(Side)

    4.5 PCB UNIT(SIDE) SIDE B PCB UNIT (SIDE) SIDE A PCB UNIT (SIDE) CN31 LOADING CAMGEAR ELV SENSE CN101 FX-MG8057ZT/UC...
  • Page 50: Pcb Unit

    4.6 PCB UNIT PCB UNIT PU UNIT(SERVICE)(PX1) M3 CRG CN41 LOAD3 CN42 CN12 FX-MG8057ZT/UC...
  • Page 51: Pcb Unit(M2 Unit)

    4.7 PCB UNIT(M2 UNIT) PCB UNIT(M2 UNIT) HOME CLAMP SPINDLE CN42 R4 R3 FX-MG8057ZT/UC...
  • Page 52: Deck Unit, Sensor Unit

    IC351 IC351 R401 R283 R402 C402 R282 R403 C403 C404 C272 IC251 R281 C405 IC251 R404 R284 R275 VR301 Q271 R292 VR301 Q271 CN256 SENSOR UNIT S101 LOAD S103 70µs S102 MODE L101 CN256 L102 Q101 REEL SENSE CN253 FX-MG8057ZT/UC...
  • Page 53: Electrical Parts List

    Q 942 (A,14,28) Transistor 2SB1689 D 954 (A,22,63) Diode UDZS16(B) D 972 (A,15,106) Diode 1SS355 Q 951 (A,17,61) Transistor 2SC4081 D 974 (A,13,106) Diode HZU8R2(B3) Q 952 (A,8,59) Transistor 2SB1185 D 982 (A,53,10) Diode 1SS355 Q 953 (A,17,64) Transistor 2SC4154-11 FX-MG8057ZT/UC...
  • Page 54 R 259 (B,164,54) RS1/16S681J R 404 (A,48,74) RS1/16S563J R 260 (B,167,54) RS1/16S473J R 405 (A,51,81) RS1/16S683J R 263 (B,156,29) RS1/16S681J R 406 (A,48,81) RS1/16S683J R 264 (B,156,31) RS1/16S681J R 411 (A,39,82) RS1/16S433J R 265 (B,158,47) RS1/16S681J R 412 (A,39,85) RS1/16S433J FX-MG8057ZT/UC...
  • Page 55 R 592 (B,46,38) RS1/16S222J R 678 (A,65,47) RS1/16S102J R 600 (A,70,73) RS1/16S103J R 679 (A,65,45) RS1/16S102J R 601 (A,65,24) RS1/16S681J R 685 (A,59,40) RS1/16S681J R 602 (A,66,21) RS1/16S681J R 686 (A,62,40) RS1/16S681J R 603 (A,67,24) RS1/16S102J R 691 (A,62,36) RS1/16S102J FX-MG8057ZT/UC...
  • Page 56 C 310 (A,87,114) CCSRCH220J50 R 921 (A,100,85) RS1/16S222J C 313 (B,90,112) CKSRYB104K25 R 922 (A,98,85) RS1/16S222J C 315 (A,94,109) CCSRCH220J50 C 316 (A,89,109) CCSRCH220J50 R 923 (A,97,85) RS1/16S103J C 331 (A,74,91) CKSRYB105K10 R 924 (A,95,85) RS1/16S473J R 925 (A,92,85) RS1/16S222J FX-MG8057ZT/UC...
  • Page 57 C 536 (B,162,51) CKSRYB105K10 C 842 (A,82,90) CCSRCH471J50 C 541 (B,151,32) CKSRYB183K50 C 855 (B,36,123) CKSRYB102K50 C 542 (B,151,28) CKSRYB183K50 C 856 (B,38,123) CKSRYB102K50 C 545 (A,151,34) CKSRYB105K10 C 865 (B,63,130) CCSRCH181J50 C 546 (A,151,26) CKSRYB105K10 C 866 (B,63,119) CCSRCH181J50 FX-MG8057ZT/UC...
  • Page 58 Q 972 (B,25,32) Transistor UMX1N D 974 (A,14,166) LED SML-310FC Q 991 (B,63,44) Transistor 2SC4081 D 991 (B,61,48) Diode UDZS5R1(B) D 901 (A,62,155) LED SML-310FC L 951 (B,38,51) Inductor CTF1473 D 902 (A,65,175) LED SML-310FC S 901 (A,36,133) Switch CSG1182 FX-MG8057ZT/UC...
  • Page 59 C 911 (B,58,49) CKSRYB473K50 R 303 (B,13,26) RS1/16S103J C 951 (B,38,53) CKSRYB104K25 C 952 (B,36,52) CKSQYB105K16 R 304 (B,14,26) RS1/16S103J C 957 (B,38,50) CKSRYB472K50 R 305 (B,12,18) RS1/16S272J C 958 (B,33,52) CKSRYB102K50 R 306 (B,11,18) RS1/16S272J R 307 (B,33,25) RS1/16S182J FX-MG8057ZT/UC...
  • Page 60 R 743 (A,3,92) RS1/16S681J C 705 (B,7,104) CKSRYB104K25 R 758 (B,12,102) RS1/16S223J C 706 (A,23,103) CKSRYB104K25 C 707 (B,11,98) CKSRYB103K25 R 759 (B,18,97) RS1/16S103J R 760 (B,18,94) RS1/16S433J C 708 (B,14,97) CKSRYB473K25 R 767 (B,10,103) RS1/16S154J R 775 (A,19,90) RAB4CQ681J FX-MG8057ZT/UC...
  • Page 61 R 402 RS1/16S332J Unit Number: R 403 RS1/16S911J Unit Name:PCB Unit(M2 Unit) R 404 RS1/16S274J CAPACITORS MISCELLANEOUS C 251 CKSRYB391K50 IC 1 BA6849FS C 252 CKSRYB391K50 Switch(HOME) CSN1057 C 253 CKSRYB391K50 Switch(CLAMP) CSN1057 C 254 CKSRYB391K50 C 255 CKSRYB103K50 FX-MG8057ZT/UC...
  • Page 62 S 102 Switch(MODE) ESG1007 S 103 Switch(70µS) ESG1007 Q 101 Photo-reflector EGN1004 Miscellaneous Parts List Motor Unit(MAIN) EXA1618 Motor Unit(SUB) EXA1660 Head Assy EXA1594 Motor Unit(-A)(CAMGEAR) CXC1144 Motor Unit(-B)(ELEVATION) CXC1145 Motor Unit(-A)(CRG) CXC4658 Variable Resistor 10kΩ CCW1023 PU Unit(Service)(PX1) CXX1569 FX-MG8057ZT/UC...
  • Page 63: Adjustment

    6. ADJUSTMENT 6.1 CONNECTION DIAGRAM - NAVI-EMV CD Standard System Model FX-MG8057ZT/UC(P6857) FX-MG8007ZT/UC(P6861) HEAD UNIT(PIONEER) EMV(DENSO) Not use Not use For DVD H/U GGD1428 Bullet connector (To DC Regulated Power Supply) NAVI(DENSO) GM-8047ZT/XU/WL AMP(PIONEER) GGD1427 Option NAVI GEX-M8087XMZT GGD1373 XM TUNER(PIONEER)
  • Page 64: Jig Connection Diagram

    6.2 JIG CONNECTION DIAGRAM FX-MG8057ZT/UC...
  • Page 65 (Usually, it can turn on by H/U) Smoll An extended cable is connected to OUT 5RCA connector+RCA extension cable (Not used) 4Communication cable Product to power supply A product with G2 built-in Color: It is the same as marketing Product harness FX-MG8057ZT/UC...
  • Page 66 - MT2 Connection Diagram (Not used) Monitor Power supply cable +14V MT2 main part Speaker cable Speaker Conversion BOX Communication cable Repair article Power supply cable +14V A product with G2 built-in FX-MG8057ZT/UC...
  • Page 67: Dolby B Nr Adjustment

    Extention Cord GGD1421 DECK UNIT CN251 VR561 VR302 IC601 SGND CN761 VR301 R-CH L-CH Meter - Dolby B NR Adjustment Test Tape Adjustment Point Adjustment Method (Switch Position) NCT-150 VR301(Lch),VR302(Rch) mV Meter(1) : –8.24dBm(300mV)±1dB (400Hz,200nwb/m) (DOLBY NR Switch : OFF) FX-MG8057ZT/UC...
  • Page 68: Am Noise Canceler Adjustment

    2. Set the system as shown in 1., then tune to a radio station. 3. Superimpose the pulse over signal to set modulation of SSG to OFF. 4. Use a noise meter to monitor output. Adjust VR561 to minimize the noise level. FX-MG8057ZT/UC...
  • Page 69: Bracket Adjustment

    G2 Mecha-Model: N (1.7) mm Example: In the case of G2 Mecha-Model (for MG3) (for G2) To re-install the Bracket, firstly place the Bracket mounting jig (GGF1517) between the bracket and product to correctly adjust the height. Then, install the Bracket properly. FX-MG8057ZT/UC...
  • Page 70: Test Mode

    Diag. off *** MECHA TEST MODE DISC CD ON G2 MECHA TEST MODE To the CD Test Mode Return to the normal mode by resetting the microcomputer.(*1) (*1) For canceling test mode, reset the unit. (*2) No display unit connected FX-MG8057ZT/UC...
  • Page 71: Cd Adjustment

    • If you press the UP or DOWN for the focus search in the test mode, you must turn the power off immedi- ately. (Otherwise, the lens will be forced to stick to the top or bottom, potentially resulting in the burning of the actuator.) FX-MG8057ZT/UC...
  • Page 72 Single TR (91),0dB, and the factory setting respectively. Note: When you pressed the [1] or [2] key during the Focus Search, you must turn the power off immediately (otherwise, the lens can stick resulting in actuator damages). FX-MG8057ZT/UC...
  • Page 73: Checking The Grating After Changing The Pickup Unit

    Because of eccentricity in the disc and a slight misalignment of the clamping center the grating waveform may be seen to "wobble" ( the phase difference changes as the disc rotates). The angle specified above indicates the aver- age angle. • Hint Reloading the disc changes the clamp position and may decrease the "wobble". FX-MG8057ZT/UC...
  • Page 74 Ech → Xch 20mV/div, AC Grating waveform Fch → Ych 20mV/div, AC 0° 30° 45° 60° 75° 90° FX-MG8057ZT/UC...
  • Page 75: Test Mode(Cd)

    3. LIFT durability test (Current disc <-> Door Open) Error mode display At any position between CAM2P and CAM3P (display: 05, 07), press the 7 key. 4. ELV durability test (ELV1F <-> 6F) At the CAM1P position (display: 01), press the 7 key. FX-MG8057ZT/UC...
  • Page 76 ELV motor FWD time-out error during CAMRST operation ERROR 3 CAMRST Err MREVTO ELV motor REV time-out error during CAMRST operation ERROR 3 MOVERCNT Over-count error during CAMRST operation ERROR 3 MSPDERR The claws do not close during CAMRST operation. ERROR 3 FX-MG8057ZT/UC...
  • Page 77 New test mode ERROR 1 Sub code NG after servo close New test mode ERROR 1 Not applicable to the G2 mechanism. The claw SW value at the occurrence of error The rotation rate does not satisfy the spec. FX-MG8057ZT/UC...
  • Page 78 *5) Basically the value of eudpzt except for the following case: In case of eudpzt=1 and door close mode, eudpzt=e *6) bit0: P_lo1, bit1: P_lo2, bit2: P_elv1, bit3: P_elv2, bit4: P_cg1, bit5: P_cg2, bit6: P_elv_vol, bit7: P_lod_vol FX-MG8057ZT/UC...
  • Page 79: General Information

    7. GENERAL INFORMATION 7.1 DIAGNOSIS 7.1.1 AVC-LAN DIAGNOSIS MODE FX-MG8057ZT/UC...
  • Page 80 FX-MG8057ZT/UC...
  • Page 81 FX-MG8057ZT/UC...
  • Page 82 FX-MG8057ZT/UC...
  • Page 83 FX-MG8057ZT/UC...
  • Page 84: Disassembly

    Fig.1 Grille Assy Removing the Frame Unit (Fig.2) Remove the six screws and then remove the Frame Unit. Frame Unit Fig.2 Removing the Chassis (Fig.3) Remove the five screws and then remove the Chassis. Chassis Fig.3 FX-MG8057ZT/UC...
  • Page 85 Chassis Unit. (Fig.5) Cover Fig.4 Chassis Unit Fig.5 Removing the Cassette Mechanism Module (Fig.6) Deck Unit Disconnect the connector of Deck Unit. (Fig.6) Remove the four screws and then remove the Cassette Mechanism Module. Cassette Mechanism Module Fig.6 FX-MG8057ZT/UC...
  • Page 86 Removing the Main Unit (Fig.7) Straighten the tabs at three locations indicated. Remove the two screws and then remove the Main Unit. Main Unit Fig.7 FX-MG8057ZT/UC...
  • Page 87 3. Remove the four Dampers and then remove the CD Mechanism Unit. Case Shorting solder CD Mechanism Unit Spring B Damper Sheet Spring A Damper Sheet Spring B Control Unit Sheet (G2T) Spring A Damper Screw A Screw A Screw B Sheet Damper Screw B Fig.8 FX-MG8057ZT/UC...
  • Page 88 PCB Unit(Side) GGD1250 Control Unit(G2T) CN101 - Removing the PU Unit(PX1) 1. Set the mechanism to the shipment mode. 2. Remove the two screws A and two screws B. 3. Remove the Frame. Fig.9 FX-MG8057ZT/UC...
  • Page 89 PU Unit together with the Screw Unit. Note: To assemble the PU Unit, insert the Spring on the PU rear between the PU Unit and the Guide first. Fig.12 FX-MG8057ZT/UC...
  • Page 90: Pcb Locations

    7.1.3 PCB LOCATIONS PCB UNIT PCB UNIT(SIDE) PCB UNIT(M2 UNIT) PCB UNIT(LOAD) PCB UNIT(LED) MAIN UNIT CONTROL UNIT(G2T) KEYBOARD UNIT SENSOR UNIT DECK UNIT FX-MG8057ZT/UC...
  • Page 91: Connector Function Description

    7.1.4 CONNECTOR FUNCTION DESCRIPTION SHIP ACC ILL- ANT+ NC (SLD3) (SLD1) NC (GND) (ACC) (+B) (SLD) (R+) (R-) (L+) (L-) (MUTE) (SLD2) SW1 SW2 ILL+ (AMP+) MUTE R+ (SLD) FX-MG8057ZT/UC...
  • Page 92 RDS demodulation data input Not used PCE2 Tuner:Chip enable output for E2PROM PCE1 Tuner:Chip enable output for PLL IC rdslk RDS LK signal input Not used LOCL Tuner:Local L output Not used SYSMUTE1 System mute output Not used Not used FX-MG8057ZT/UC...
  • Page 93 A/D converter reference voltage input AVCC A/D converter power supply Tuner:Data input from PLL IC *PD5844A IC's marked by * are MOS type. Be careful in handling them because they are very liable to be damaged by electrostatic induction. FX-MG8057ZT/UC...
  • Page 94 * LC75700TS KEY SCAN KEY BUFFER GENERAL PORT CLOCK GENERATOR CONTROL REGISTER INTERFACE SHIFT REGISTER S-80840CNNB-B8Z VD D O UT V R E F FX-MG8057ZT/UC...
  • Page 95 ELV drive voltage select output 54–58 Not used STSWAQV STS test output Power supply STSDEC STS test output STSENC STS test output STSSTD STS test output STSSTC STS test output STSSTB STS test output STSSTA STS test output 68–71 Not used FX-MG8057ZT/UC...
  • Page 96 CD : Power supply short sensor input VREF A/D converter reference voltage input AVCC A/D converter ground STSSI STS IC data input STSSO STS IC data output STSSCK STS IC clock output * PEG024B S-L2980A33MC-C6S Reference Voltage ON/OFF Circuit FX-MG8057ZT/UC...
  • Page 97 LDQW : Data input DQ11 UDQM : Output Mask input DQ0-DQ15 : Data input / output DQ10 VDD : Power Supply VSS : Ground VSSQ VSSQ VDDQ : Data output power VSSQ : Ground NC : No Connection VDDQ VDDQ LDQM UDQM FX-MG8057ZT/UC...
  • Page 98 BU9423AKS - Pin Layout NCAS NRAS NTEST BANK YMCLK YMDATA YMLD ZSENSE - Block Diagram DRAM I/F ENCODER DECODER YLRCK ATTENUATER YSCK CD-DSP YSRDATA YBLKCK YFCLK ZLRCK YFLAG DAC I/F ZSCK ZSRDATA Microcomputer I/F FX-MG8057ZT/UC...
  • Page 99 Connect to the antenna through an L (LAU type) of 4.7µH.To cope with the power transmission line hums, insert a series circuit consisting of an L (a coil of about 100mH) + R (a resistor of 470 Ω to 2.2kΩ) between the GND. FX-MG8057ZT/UC...
  • Page 100: Explanation

    7.3 EXPLANATION 7.3.1 SYSTEM BLOCK DIAGRAM +B,ACC EMV-N(OTHER MAKERS) NAVI Power Sapply AVC-LAN FM COMP AVC-LAN Sound signal SPEAKER AMPLIFIER Audio H/U MAIN,SUB PIONEER AVC-LAN FX-MG8057ZT/UC ST-SW FX-MG8007ZT/UC +B,ACC SDARS PIONEER FX-MG8057ZT/UC...
  • Page 101: Operational Flow Chart

    7.3.2 OPERATIONAL FLOW CHART Power ON VCC=5V Pin 62 VDD=5V Pin 16 bsens Pin 75 bsens=L asens Pin 74 asens=L SWVDD←H Pin 55 IPPW←H Pin 22 Source keys operative Source ON Completes power-on operation. (After that, proceed to each source operation) FX-MG8057ZT/UC...
  • Page 102: Notes On Servicing

    After disconnecting the power supply connector and removing this product, confirm that you can see a metal plate through the hole near the "SHIP" mark on the rear chassis. Confirm that the door of the CD player is closed. FX-MG8057ZT/UC...
  • Page 103: Operations

    8. OPERATIONS - RADIO SCAN/ PRESET SCAN - TAPE AUTOMATIC PROGRAM SEARCH TAPE EJECT TAPE FX-MG8057ZT/UC...
  • Page 104 - RADIO SCAN/ PRESET SCAN - TAPE AUTOMATIC PROGRAM SEARCH TAPE EJECT TAPE FX-MG8057ZT/UC...
  • Page 105 FX-MG8057ZT/UC...
  • Page 106 PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan 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 PIONEER CORPORATION 2004 K-ZZD.DEC.

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