Sony CDX-L480N Service Manual Download Page 20

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CDX-L480N

2-9. SCHEMATIC DIAGRAM — MAIN SECTION (1/2) — • Refer to page 15 for Waveforms and page 16 for Common Note on Schematic Diagram.

• Refer to page 24 for IC Block Diagrams.

Note:

• Voltage is dc with respect to ground under no-signal

(detuned) condition.
no mark : FM
(

) : AM

> : CD PLAY

∗

: Impossible to measure

(Page 21)

IC B/D

C51

C412

C479

C631

C758

D752

D755

D756

D757

D759

D760

R60

R406

R407

R408

R409

R431

R433

R441

R443

R451

R453

R461

R463

R479

R480

R752

R61

R62

D761

D762

R452

R442

R462

R54

R634

R633

R654

R653

R651

D651

D751

D758

D753

D754

JC29

C64

C59

C62

C61

C58

C56

C54

C421

C404

C405

JC406

C420

C413

JC441

JC431

C432

C452

C442

C462

JC755

C480

R631

JC754

JC753

C751

C765

C764

C617

C602

C618

R652

D480

Q479

Q478

JC479

JC444

Q461

Q441

JC59

JC1

C57

Q451

R432

Q431

Q631

Q651

JC756

D609

D601

C756

R756

X51

R57

R56

R636

R29

Q22

D479

F901

R609

L601

R632

C759

C760

C761

C757

C754

C755

CN601

JC651

JC631

JC609

C55

C601

R405

IC51

J330

IC750

TU1

C11

JC20

IC401

C401

C406

JC407

C407

C431

C451

C441

C461

C753

C332

C333

C334

C335

Summary of Contents for CDX-L480N

Page 1: ...echanism Type MG 393XC 121 Q Optical Pick up Name KSS 721A SERVICE MANUAL Thai Model CDX L480N FM AM COMPACT DISC PLAYER The tuner and CD sections have no adjustments Sony Corporation e Vehicle Company Published by Sony Engineering Corporation 9 961 055 01 2003G04 1 2003 07 ...

Page 2: ...o use the procedure in the printed matter which is included in the repair parts The flexible board is easily damaged and should be handled with care NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick up block Therefore when checking the laser diode emission ob serve from more ...

Page 3: ...g a temperature regulator should be set to about 350 C Caution The printed pattern copper foil may peel away if the heated tip is applied for too long so be careful Strong viscosity Unleaded solder is more viscous sticky less prone to flow than ordinary solder so use caution not to let solder bridges occur such as on IC pins etc Usable with ordinary solder It is best to use only unleaded solder bu...

Page 4: ...ram Display Section 14 2 5 Circuit Boards Location 15 2 6 Printed Wiring Boards CD Mechanism Section 16 2 7 Schematic Diagram CD Mechanism Section 18 2 8 Printed Wiring Board Main Section 19 2 9 Schematic Diagram Main Section 1 2 20 2 10 Schematic Diagram Main Section 2 2 21 2 11 Printed Wiring Board Key Section 22 2 12 Schematic Diagram Key Section 23 2 13 IC Block Diagrams 24 3 EXPLODED VIEWS 3 ...

Page 5: ...order given 1 1 SUB PANEL ASSY 1 1 SUB PANEL ASSY Page 5 1 2 CD MECHANISM BLOCK Page 6 1 5 CHASSIS T U ASSY Page 7 1 6 DISC IN BOARD Page 8 1 8 SHAFT ROLLER ASSY Page 9 1 9 FLOATING BLOCK ASSY Page 9 1 10 OPTICAL PICK UP BLOCK Page 10 SET 1 7 SERVO BOARD Page 8 1 3 MAIN BOARD Page 6 1 4 HEAT SINK Page 7 2 claws 3 claws 4 sub panel assy 1 two screws PTT 2 6x6 ...

Page 6: ...MAIN BOARD 1 screw PTT 2 6x6 6 two screws PTT 2 6x4 7 bracket CD 2 screw PTT 2 6x6 5 CD mechanism block 4 CNP301 3 1 two screws PTT 2 6x6 3 screw PTT 2 6x6 ground point 4 two screws PTT 2 6x6 ground point 5 MAIN board 2 two screws PTT 2 6x6 ...

Page 7: ...0N 1 4 HEAT SINK 1 5 CHASSIS T U ASSY 1 screw PTT 2 6x8 3 screw PTT 2 6x8 5 heat sink 4 2 two screws PTT 2 6x12 4 chassis T U assy 3 two screws P 2x3 2 two screws P 2x3 1 Unsolder the lead wires black red white ...

Page 8: ...claws 2 DISC IN board 4 guide disc 1 screw PS 2x3 6 two screws PTT 2x4 7 screw PTT 2x4 1 CN3 2 Removal the solders 4 screw P 2x3 5 loading motor assy 8 SERVO board 9 PICK UP FLEXIBLE board optical pick up block 3 Unsolder the lead wires black yellow ...

Page 9: ...r RA bearing roller bearing roller 7 LOAD board 6 screw PTT 2x4 1 tension spring KF1 2 tension spring KR1 8 compression spring FL 7 floating block assy 9 compression spring FL 5 Fit lever D in the direction of the arrow 3 damper T 4 damper T 6 Turn loading ring in the direction of the arrow 1 8 SHAFT ROLLER ASSY When installing take note of the positions arm roller and washers Fig 1 ...

Page 10: ...10 CDX L480N 1 10 OPTICAL PICK UP BLOCK 1 two screws P 2x3 4 screw P 2x3 5 leaf spring feed 6 shaft feed assy 2 sled motor assy 3 optical pick up block ...

Page 11: ...CK I Key acknowledge detection input 27 DAVN I RDS data block synchronization detection input 28 BUIN I Backup power supply input 29 SIRCS I SIRCS input 30 TU_ATTIN I Tuner attenuator control input 31 CD_PACK I CD text pack synchronization signal input from CD servo IC 32 NC VCC Power supply pin 5 V 33 RESET I Microcomputer reset input 34 NOSE SW I Not used Fixed at H in this set 35 BEEP O Beep ou...

Page 12: ...m power amp IC 69 STB O Standby control output for power amp IC 70 VOLATT O Electronic volume attenuator control output 71 to 74 NC O Not used Open 75 DOOR IND O Not used Open 76 to 84 NC O Not used Open 85 NS_MASK O Noise mask output 86 E2P_CKO O EEPROM serial clock output 87 E2P_SIO I O EEPROM serial data input output 88 TU ATT O Tuner attenuator control output 89 90 NC O Not used Open 91 AD_ON ...

Page 13: ...ISC IN X1 16 9344MHz OPTICAL PICK UP KSS 721A I V CONV CDL CDR CD PACK TSTB STB AO CD_TSO CD_TSI CD_TCKO CD_RST RFOK INSW LIMIT CD_SELFSW D_SW CD_L_ LO CD_LM_EJ TUNER SECTION A 23 24 M M M IC602 B UP B LOUT ROUT PACK TSTB SI RFOK SO SCK STB AO RST RESET A C B D E F PD LD A C B D E F PD LD LD AMP FOCUS COIL TRACKING COIL FD FSC FSC TRK TRK SL SL SP SP LD LD TD SD MD LOAD EJECT SYSTEM CONTROL IC501 ...

Page 14: ...CONDITION 7 TU MUTE 11 TU VDD 10 VCC 8 3V 27 87 E2P_SIO DAVN 85 30 TU ATT 88 R CH 25 29 AUDIO OUT REAR 1 L R 2 R CH J330 5 ANP R 27 35 37 34 33 31 30 6 ANT R BEEP STB 4 SCL 2 SDA CONT 9 7 6 20 POWER AMP IC750 1 2 MULTIPLE VOLTAGE REGULATOR IC750 2 2 AUDIO 8 3V VP2 VP1 Signal path FM CD R ch is omitted due to same as L ch 12 SYSRST B UP B 24 BUSON 25 UNISI 43 UNICKO 44 UNISO 42 BU IN 28 4 L CH OUT ...

Page 15: ... LCD LCD901 PANEL B PANEL B LSW904 905 907 911 913 921 LED900 903 906 912 951 952 LED931 932 LCD BACK LIGHT D502 D501 52 55 SEG1 SEG46 DI CL CE B UP B KEY ILLUMINATION KEY MATRIX 2 2 I 25 27 I 38 40 I 49 MAIN board SERVO board LIMIT board SUB CD board tuner unit TU1 DISC IN board KEY board LOAD board IC1 uj RFO Waveforms Servo Board MODE CD PLAY 1 2 3 IC1 ts PACK 0V 1 8Vp p 16 9344MHz IC1 wd XTAL ...

Page 16: ... supply from ACC and BATT cords Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path F FM f AM J CD for printed wiring boards X parts extracted from the component side Y parts ...

Page 17: ...P90 C41 TP29 TP15 TP33 TP73 TP14 TP18 TP48 TP71 TP51 TP49 TP52 TP55 TP75 TP53 TP56 TP43 TP58 TP61 TP74 TP60 TP68 TP80 TP7 TP62 TP91 TP63 TP66 TP64 TP69 TP72 TP50 TP26 TP32 TP59 TP76 BP4 BP3 BP1 BP2 R8 R9 R5 R7 R12 R14 R15 R10 R17 R18 R19 R20 R22 TP92 FB5 C3 C5 C6 C8 C9 C10 C11 C13 C14 C16 C18 C19 C24 C25 C29 C34 C36 C38 C35 C22 C30 TP6 C23 C1 C27 R21 TP47 C15 C20 TP35 TP23 R6 C17 TP82 TP44 Q1 R26 ...

Page 18: ...36 TP46 TP37 TP38 TP39 TP40 TP41 TP42 TP43 TP44 TP45 CN1 R18 R19 R20 R17 TP66 TP62 TP47 TP63 TP48 TP49 TP64 TP50 TP51 TP52 TP68 TP53 TP69 TP54 TP70 TP55 TP71 TP56 TP72 TP57 TP73 TP58 TP74 TP59 TP75 TP60 TP76 TP61 IC1 X1 C1 C5 C3 TP93 TP94 TP95 TP96 TP97 TP98 TP85 C15 C16 C70 C24 C35 C38 C36 FB5 C25 C34 C71 C29 C27 C41 C22 C30 C18 Q1 IC2 CN1 C6 TP1 TP4 TP5 SW4 2 7 SCHEMATIC DIAGRAM CD MECHANISM SEC...

Page 19: ...W25 JW26 JW27 JW29 JW30 JW31 JW32 JW36 JW37 JW38 JW39 JW40 JW41 JW42 JW44 JW45 JW46 JW48 JW49 JW50 JW51 JW52 JW53 JW54 JW55 JW56 JW57 JW58 JW59 JW61 JW62 JW63 JW64 JW65 JW69 JW70 JW71 JW73 JW74 JW76 JW77 JW78 JW80 JW81 JW82 JW83 JW84 JW85 JW86 JW87 JW88 JW89 JW90 JW91 JW96 JW100 JW101 R631 L501 JW103 JW104 JW105 J561 CN601 F901 JW6 J330 C431 C461 C451 JW102 C3 C401 C4 JW93 D719 D716 D717 D718 D720...

Page 20: ...1 R463 R479 R480 R752 R61 R62 D761 D762 R452 R442 R462 R54 R1 R634 R633 R654 R653 R651 D651 D751 D758 D753 D754 JC29 C3 C64 C59 C62 C61 C58 C56 C54 C421 C404 C405 JC406 C420 C413 JC441 JC431 C432 C452 C442 C462 JC755 C480 R631 JC754 JC753 C751 C765 C764 C617 C602 C618 C6 R652 D480 Q479 Q478 JC479 JC444 Q461 Q441 JC59 C5 D1 C4 C1 JC1 C57 Q451 R432 Q431 Q631 Q651 JC756 D609 D601 C756 R756 L1 X51 R57...

Page 21: ...3 R514 CNP301 C303 JC580 JC581 JC582 D719 D715 R999 JC88 R532 R533 D501 X502 IC602 R584 Q664 R585 D581 Q581 Q580 Q582 L301 S702 C622 C623 L302 C302 L304 L305 L306 L307 R535 R536 R522 R521 R539 IC501 R518 R540 R541 R671 R672 D580 R582 R673 CN701 R720 JC303 JC304 2 10 SCHEMATIC DIAGRAM MAIN SECTION 2 2 Refer to page 16 for Common Note on Schematic Diagram Page 18 Page 23 Page 20 Note Voltage is dc w...

Page 22: ...901 LED912 D901 R971 R981 R982 R983 D902 R931 R932 R933 R952 R951 R955 R954 R956 R957 R991 R994 R995 R996 C992 C993 C991 R984 R986 R985 C994 C995 R992 R993 C971 R987 R988 R989 R972 R912 R911 R913 CN901 FMB4 FMB3 D991 R961 R944 IC901 2 11 PRINTED WIRING BOARD KEY SECTION Refer to page 15 for Circuit Boards Location and page 16 for Common Note on Printed Wiring Boards Uses unleaded solder Page 19 LE...

Page 23: ...2 LED903 LED906 LED912 LED951 LED952 R931 R932 R933 R941 R942 LSW911 2 2 LSW910 2 2 R945 R946 R951 R952 LSW913 2 2 LSW914 2 2 LSW915 2 2 LSW916 2 2 R954 LSW920 2 2 R955 LSW919 2 2 LSW918 2 2 LSW917 2 2 R956 R957 LSW907 2 2 LSW908 2 2 LSW909 2 2 LSW921 2 2 R962 R963 R964 R965 LSW904 2 2 R966 LSW905 2 2 R943 C991 C992 C993 C994 C995 C971 R993 R992 S900 S901 S902 S903 LSW905 1 2 S906 LSW907 1 2 LSW90...

Page 24: ...ERFACE DIGITAL PLL TIMING GENERATOR EFM DEMODULATOR ERROR CORRECTION PROCESSOR MICROCOMPUTER INTERFACE CD TEXT DECODER SUB CODE PROCESSOR 16K SRAM D A AUTO GAIN CONTROLLER FD TD SD MD CONTROLLER ADDER SVDRAM MULTIPLIER SVCRAM SVROM ROM DECODER CLV PROCESSOR DEFECT COMPARATOR RFENV MIRENV A D CONVERTER MEMORY PROCESSOR COMPARATOR IC51 SAA6588T V2 518 IC1 µPD63711GC 8EU 2 13 IC BLOCK DIAGRAMS SCOUT ...

Page 25: ...BASS TREBLE MIDDLE 15dB 15dB 1dB STEP VOLUME 23 79dB dB 1dB STEP VOLUME 23 79dB dB 1dB STEP INPUT GAIN 0 15dB 1dB STEP INPUT SELECTOR 4 STEREO INCLUDE 1 ISOLATION INPUT INPUT GAIN 0 15dB 1dB STEP MUTE MUTE 6 7 8 9 10 11 3 4 5 2 1 D GND A GND FIL BUS RCH AN BUS LCH TU RCH TU LCH CD RCH CD LCH D1 D2 SDA SCL MUTE SEL ADJ VCC OUT FR OUT RR OUT FL OUT RL VCC VCC 2 TONE PASS TONE PASS ...

Page 26: ... TEMPERATURE PROTECTION BACK UP SWITCH REGULATOR 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 TAB OUT FL OUT FL OUT RL OUT RL IN RL S GND IN RR OUT RR OUT RR OUT FR OUT FR DIAG ANT REM AMP REM SERVO5V MECH6V VP B UP B SDA SCL VP2 PGND3 SVR IN FL IN FR BEEP PGND2 VP1 STB PGND1 RST CRES AUDIO8 3V GND PANEL B CBU FL RL RR VP FR I 2 C BUS ...

Page 27: ...fety Replace only with part number specified Ref No Part No Description Remark 3 1 CHASSIS SECTION R Ref No Part No Description Remark R 1 X 3382 709 1 PANEL ASSY SUB 2 3 042 244 11 SCREW T 3 X 3383 739 1 LOCK ASSY S 4 3 246 481 01 PLATE TU GROUND 5 3 246 450 01 BRACKET CD 6 3 376 464 11 SCREW PTT 2 6X6 GROUND POINT 7 A 3274 588 A MAIN BOARD COMPLETE F901 1 532 877 11 FUSE BLADE TYPE AUTO FUSE 10A...

Page 28: ...4 031 1 PANEL SUB ASSY FRONT 52 X 3383 104 3 BUTTON ASSY S 53 3 246 463 01 FILTER IR 54 3 246 466 01 PLATE CD LIGHT GUIDE 55 3 246 479 01 SPRING RELEASE 56 3 246 454 03 PANEL CD FRONT BACK 57 X 3383 264 2 CASE ASSY for FRONT PANEL 58 A 3337 982 A PANEL OVERALL ASSY FRONT 59 1 694 977 11 CONDUCTIVE BOARD CONNECTION 60 3 042 504 01 EMBLEM NO 2 5 SONY 61 3 246 455 11 BUTTON PRESET LCD901 1 805 078 11...

Page 29: ... 101 A 3315 247 D CHASSIS T U ASSY 102 3 931 909 01 SPRING LR TENSION 103 3 931 913 11 RING ROLLER RETAINING 104 3 338 737 01 SCREW 2X3 PS 105 A 3315 040 A ROLLER ASSY ARM 106 A 3283 270 A SERVO BOARD COMPLETE 107 1 683 666 12 PICK UP FLEXIBLE BOARD 108 3 039 629 02 BRACKET MOTOR 109 3 225 784 02 SPRING RA3 TENSION 110 3 933 152 03 ROLLER S M903 A 3315 039 A MOTOR SUB ASSY LD LOADING 7 7 627 553 3...

Page 30: ...3 931 897 71 DAMPER T 153 3 039 627 01 LEVER D 154 3 040 165 03 RETAINER DISC 155 3 014 727 01 WHEEL LW WORM 156 3 931 895 01 SPRING CH TENSION 157 3 931 898 01 SPRING FL COMPRESSION 158 3 032 483 02 SPRING KF1 TENSION 159 A 3315 243 E CHASSIS M ASSY 160 3 220 180 01 SPRING TR2 TENSION 161 3 931 881 11 LEVER LOCK 162 3 931 882 02 GEAR MDL 163 3 007 537 11 WHEEL U WORM 164 3 007 536 05 LEVER TR 165...

Page 31: ...ot supplied SUB CD board not supplied LIMIT board 201 X 3378 598 5 CHASSIS OP ASSY including M901 202 3 043 494 01 SPRING SL TORSION 203 3 040 170 01 BASE DRIVING 204 3 040 419 01 GEAR MIDWAY 205 A 3291 669 A SHAFT FEED ASSY 206 3 025 743 01 SPRING FEED LEAF 207 3 931 898 01 MOTOR FLEXIBLE BOARD 208 3 909 607 01 SCREW 0209 8 820 165 06 OPTICAL PICK UP KSS 721A C RP 210 3 338 737 01 SCREW 2X3 PS 21...

Page 32: ...SR CD T SOURCE LED903 6 500 450 01 LED CL 195SR CD T SEL LED906 6 500 450 01 LED CL 195SR CD T MODE LED912 6 500 450 01 LED CL 195SR CD T EQ3 LED931 6 500 459 01 LED NSCW505T ARS LCD BACK LIGHT LED932 6 500 459 01 LED NSCW505T ARS LCD BACK LIGHT LED951 8 719 082 38 LED CL 270SR C TS DISC IND R LED952 8 719 082 38 LED CL 270SR C TS DISC IND L SWITCH LSW904 1 771 476 11 SWITCH KEYBOARD WITH LED VOLU...

Page 33: ... SWITCH SW3 1 529 565 41 SWITCH PUSH 1 KEY LIMIT LOAD BOARD SWITCH SW4 1 529 566 31 SWITCH PUSH 1 KEY DOWN A 3274 588 A MAIN BOARD COMPLETE 7 685 134 19 SCREW P 2 6X8 TYPE2 NON SLIT 7 685 793 09 SCREW PTT 2 6X8 S 7 685 795 09 SCREW PTT 2 6X12 S CAPACITOR C1 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C2 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C3 1 126 163 11 ELECT 4 7uF 20 50V C4 1 124 589 11 ELECT ...

Page 34: ...9 109 97 DIODE RD6 8ES B2 D711 8 719 056 83 DIODE UDZ TE 17 6 8B D712 8 719 056 83 DIODE UDZ TE 17 6 8B D715 8 719 056 83 DIODE UDZ TE 17 6 8B D716 8 719 109 97 DIODE RD6 8ES B2 D717 8 719 109 97 DIODE RD6 8ES B2 D718 8 719 109 97 DIODE RD6 8ES B2 D719 8 719 034 94 DIODE MA4180 M QZ D720 8 719 109 97 DIODE RD6 8ES B2 D751 8 719 970 02 DIODE 1SR139 400 D752 8 719 053 18 DIODE 1SR154 400TE 25 D753 8...

Page 35: ... 11 METAL CHIP 22K 5 1 10W R502 1 216 809 11 METAL CHIP 100 5 1 10W R503 1 216 809 11 METAL CHIP 100 5 1 10W R504 1 218 871 11 METAL CHIP 10K 0 5 1 10W R505 1 218 871 11 METAL CHIP 10K 0 5 1 10W R508 1 216 813 11 METAL CHIP 220 5 1 10W R509 1 216 813 11 METAL CHIP 220 5 1 10W R510 1 216 825 11 METAL CHIP 2 2K 5 1 10W R511 1 216 825 11 METAL CHIP 2 2K 5 1 10W R512 1 216 825 11 METAL CHIP 2 2K 5 1 1...

Page 36: ... CHIP 0 01uF 10 25V C35 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C36 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C38 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C41 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C43 1 162 967 11 CERAMIC CHIP 0 0033uF 10 50V C44 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C70 1 125 837 11 CERAMIC CHIP 1uF 10 6 3V C71 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V CONNECTOR CN1 1 764 616 41 H...

Page 37: ...37 CDX L480N MEMO ...

Page 38: ...N HISTORY Clicking the version allows you to jump to the revised page Also clicking the version at the upper on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 2003 07 New ...

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