Sony CX-LFA500, Service Manual

Page 1: ...M antenna terminal 75 unbalanced AM tuning range AM usable sensitivity 350 μV m AM antenna Loop antenna AMPLIFIER Power output Rated 16 W 16 W 6 ohms T H D 1 1 kHz DIN 45500 Reference 20 W 20 W 6 ohms T H D 10 1 kHz DIN 45324 MUSIC POWER 40 W 40 W Input AUX IN 500 mV Outputs SPEAKERS 6 ohms or more PHONES 32 ohms or more European model 531 1 602 kHz with the tuning interval set at 9 kHz Other mode...

Page 2: ...oard Power Section 26 6 10 Schematic Diagram Power Section 26 6 11 IC Pin Function Description 30 7 EXPLODED VIEWS 7 1 Overall Section 32 7 2 Front Section 33 7 3 Chassis Section 34 7 4 CD Mechanism Deck Section 35 7 5 Optical Pick up Section KSM 213D 36 8 ELECTRICAL PARTS LIST 37 TABLE OF CONTENTS Ver 1 2 2003 11 GENERAL Power requirements European model Singaporeand Australian models Korean mode...

Page 3: ...on to electrostatic break down and also 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 la...

Page 4: ...4 CX LFA500 Service Position of the CD Mechanism Deck Service Position of the Tape Cassette Mechanism Deck ...

Page 5: ...tionalconnecting cable with RCA phono plugs red plug to R jack white plug to L jack Refer also to the operating instructions for your equipment To switch function to external input press AUX To change a source name in the display of the AUX function Hold down AUX and press POWER while the power is on AUX VIDEO TV 3 SUB WOOFER3 jack Connect optional powered sub woofer with a built in amplifier to t...

Page 6: ...thin 6 seconds press ENTER The hour flashes in the display 3 Press f or g to set the hour then press ENTER 4 Press f or g to set the minute Each press changes the time in 1 minute steps 5 Press ENTER The time display stops flashing and the clock starts from 00 seconds To display the time while the power is on Hold down SHIFT and press CLOCK on the remote The time will be displayed for 6 seconds Ti...

Page 7: ...M55D OPTICAL PICK UP KSM 213D HOLDER C213 CD MECHANISM DECK CDM55A K6BD44B CONTROL BOARD SINGLE CASSETTE MECHANISM FRONT PANEL ASSY TOP CABINET REAR PANEL 3 1 Top Cabinet Rear Panel 1 three screws KTP 3 12 2 three screws KTP 3 12 3 six screws BVTP 3 10 7 two screws BVTP 3 10 8 three screws BVTP 3 10 5 top cabinet 4 qa rear panel q tuner FM AM 6 wire flat type 15p a a b b 9 three screws BVTP 3 10 V...

Page 8: ... type 25p CN302 8 front panel assy 5 connector 5p CN1 6 connector 6p 7 connector 5p CN201 3 3 CONTROL Board Single Cassette Mechanism 7 single cassette mechanism CMAL1Z222B 5 CONTROL board 1 twelve screws BVTP 3 10 6 four screws BVTP 3 10 2 wire flat type 25p CN601 3 wire flat type 12p CN602 4 wire flat type 8p CN603 ...

Page 9: ...BVTP 3 10 6 CD door assy 7 CD mechanism deck CDM55A K6BD44B 2 wire flat type 21p CN303 3 5 MAIN Board POWER Board 2 two screws BVTP 3 10 3 two screws BVTP 3 10 7 four screws BVTP 3 10 4 six screws BVTP 3 10 5 heat sink assy 6 MAIN board 9 POWER board 1 connector 7p CN801 8 power transformer ...

Page 10: ...ING board 2 two screws BTP 2 6 6 4 motor LD assy M901 1 Remove the belt 3 Remove soldering from the two points 3 7 CD Board 2 Remove soldering from the four points 3 wire flat type 16p 5 CD board 4 wire flat type 21p CN101 1 screw P 2 6 5 ...

Page 11: ... claws claw claw C A B 3 9 Optical Pick up KSM 213D Holder C213 1 two floating screws PTPWH M2 6 qf floating screws PTPWH M2 6 qg holder C213 5 screw PTTP M2 6 6 stopper BU 2 two compression spring T213 7 compression spring T213 3 insulator 8 insulator 9 screw PTTP M2 6 q stopper BU qa compression spring T213 qs insulator qd optical pick up KSM 213D 4 insulator Ver 1 2 2003 11 ...

Page 12: ...12 CX LFA500 MEMO ...

Page 13: ...R Precaution 1 Clean the following parts with a denatured alcohol moistened swab record playback heads pinch rollers erase head rubber belts capstan idlers 2 Demagnetize the record playback head with a head demag netizer 3 Do not use a magnetized screwdriver for the adjustments 4 After the adjustments apply suitable locking compound to the parts adjusted 5 The adjustments should be performed with ...

Page 14: ... parts adjusted 4 The adjustments should be performed with the rated power supply voltage unless otherwise noted 5 The adjustments should be performed in the order given in this service manual As a general rule playback circuit adjustment should be completed before performing recording circuit adjustment 6 The adjustments should be performed for both L CH and R CH 7 Switches and controls should be...

Page 15: ...nd TP DVC on the CD board 2 Turn the power on 3 Put the disc YEDS 18 in and turned power switch on again and actuate the focus search actuate the focus search when disc table is moving in and out 4 Check the oscilloscope waveform S curve is symmetrical between A and B And confirm peak to peak level within 2 1 Vp p S curve waveform Note Try to measure several times to make sure than the ratio of A ...

Page 16: ...e Waveform 7 Press the CD u button The tracking servo and sledding servo are turned ON Confirm the C DC voltage is almost equal to the A DC voltage is step 4 8 To exit from this mode turn the power off Notes Always move the optical pick up to most inside track when exiting from this mode Otherwise a disc will not be unloaded Do not run the sled motor excessively otherwise the gear can be chipped T...

Page 17: ...e 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 TUNER J CD d AUX E PB TAPE a REC TAPE Note The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Indicatio...

Page 18: ... SERVO INTERFACE CPU INTERFACE 18 63 62 61 19 SENS 20 86 97 87 94 3 SCOR C SQSO C SQCK C XLT C CLK C DATA C SENS C SCOR 1 2 96 88 SCLK COUT 9 21 SSTP 27 FOK 22 23 MIRR DFCT TO SERVO INTERFACE CH4OUTF CH4OUTR SPINDLE MOTOR DRIVE MOTOR DRIVE CH2OUTF CH2OUTR M M SLED IC102 FOCUS TRACKING COIL DRIVE SPINDLE SLED MOTOR DRIVE 2 AXIS DEVICE TRACKING FOCUS IC101 2 2 DIGITAL SERVO PROCESSOR OPTICAL PICK UP...

Page 19: ...E AC IN PT802 ECO CD POWER CONTROL Q420 Q401 RY801 18 KEY1 82 CD FU REG Q312 10V 5V VM PB REC EQ AMP IC301 AUX L 19 18 OUT L TU L 23 TAPE L 2 CD L 21 16 OUT R R CH 13 CONT 28 REC OUT R MUTE 80 RDS SIG 23 RDS DATA 91 R ST 92 STEREO MUTE FM SOUT R DATA R INT RDS CLK 27 R CH R CH SW2 R REC SW3 F REC SW4 PACK SW5 PEND M M1 DECK MOTOR L OUT2 R CH L OUT1 F DATA 10 T PLAY SW 79 T MTR CONT 6 T END SW 5 T ...

Page 20: ...ection IC102 IC101 IC103 TP VC TP RFAC TP DVC CN303 22 1 680 849 1 2 A B C D E F G 3 4 5 6 7 8 Ref No Location D101 F 5 IC101 E 4 IC102 C 5 IC103 D 2 Q101 C 2 Q102 G 5 Semiconductor Location See page 17 for Circuit Boards Location Ver 1 2 2003 11 ...

Page 21: ...21 21 CX LFA500 6 4 Schematic Diagram CD Section KSM 213D CN303 0uH 0uH 23 See page 17 for Waveforms See page 27 28 for IC Block Diagrams Ver 1 2 2003 11 ...

Page 22: ...61 E 5 Q262 E 5 Q263 E 4 Q301 B 7 Q302 C 7 Q303 B 7 Q304 B 7 Q305 C 7 Q306 C 7 Q307 C 7 Q308 C 8 Q309 D 7 Q310 D 7 Q311 C 7 Q312 B 9 Q401 H 6 Q402 G 4 Q403 G 4 Q405 G 4 Q406 B 5 Q407 B 5 Q408 B 6 Q409 B 6 Q411 B 6 Q412 B 6 Q413 G 8 Q416 G 4 Q417 G 8 Q418 G 9 Q419 F 9 Q420 G 9 IC301 D419 D416 C214 1 2 A B C D E G H F 3 4 5 6 7 9 8 1 688 562 2 14 2 20 2 11 2 24 TO CONTROL BOARD CN601 Page 24 C TO CD...

Page 23: ...1 0 4 0 1 0 0 6 10 1 23 4 1 1 1 1 22 1 1 22 1 32 0 7 0 7 10 2 0 6 9 5 10 1 10 0 4 9 0 0 6 0 6 9 6 7 0 6 0 4 6 6 7 0 0 7 1 0 0 0 0 1 0 9 0 1 0 1 1 0 7 1 6 9 0 No mark FM CD stop TO CONTOL BOARD CN601 Page 25 C TO POWER BOARD CN801 Page 26 D TO CD BOARD CN101 Page 21 A TO CONTOL BOARD CN602 Page 25 B MAIN BOARD TUNER PACK PHONE BOARD SPEAKER IMP 6Ω NOTE RXXX 0 01 0 1 2S MUTE CONT 50V 50V 50V 50V 50V...

Page 24: ... 1 674 336 12 12 CONTROL BOARD TO MAIN BOARD CN305 Page 22 B 2 24 3 4 2 7 LOADING BOARD IC601 IC604 IC602 IC603 CN602 11P AEP UK 12P EXCEPT AEP UK Ref No Location D601 B 4 D602 C 8 D603 A 10 D604 C 8 D605 B 3 D606 F 6 D607 C 7 D608 C 8 D609 C 8 D610 B 10 IC601 B 6 IC602 B 9 IC603 C 8 IC604 F 9 Q601 D 7 Q602 B 4 Q603 B 4 Q604 B 4 Q605 B 10 Q606 E 6 Q608 E 6 Q609 F 7 Q610 C 10 Semiconductor Location...

Page 25: ...21 0 61 15 1 22 5 1 62 31 5 23 0 8 63 31 5 24 1 9 64 28 2 25 2 8 65 31 5 26 5 5 66 31 5 27 2 5 67 28 0 68 29 5 1 69 0 30 70 0 31 71 0 32 72 5 0 33 73 0 34 28 6 74 0 35 28 6 75 0 36 28 7 76 37 28 8 77 0 38 29 2 78 0 39 28 7 79 4 7 40 28 7 80 0 5 0 5 6 No mark FM CD stop CONTROL BOARD TAPE MECHANISM DECK SWITCH GR Q606 MOTOR DRIVE TSOL DRIVE POWER SWITCH POWER CONTROL RESET 4 7K C 51E3 FLUORESCENT I...

Page 26: ...RD TO MAIN BOARD PN401 Page 23 D AC IN ECO Not replaceable Built in transformer 1 2 A B C D E F 3 4 5 6 7 8 1 688 566 TO MAIN BOARD PN401 Page 22 D 5 3 1 7 6 2 POWER TRANSFORMER 5 2 3 4 1 6 8 17 15 14 12 13 POWER BOARD Not replaceable Built in transformer AC IN G See page 17 for Circuit Boards Location ...

Page 27: ... 4 XRST 3 SQCK SQSO 5 9 8 7 6 56 60 53 54 55 59 57 58 51 52 48 49 50 47 44 45 46 43 41 42 XLAT CLOK SENS SYSM DATA XUGF XPCK GFS C2PO WFCK 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 32 33 30 31 36 37 34 35 39 40 38 28 27 29 SPOA ATSK SCLK VDD SCOR SPOB XLON XTAI XVDD EMPH AVDD1 AOUT1 AIN1 XTAO XVSS AIN2 AOUT2 AVDD2 RMUT LOUT2 LOUT1 BCK LRCK PCMD LMUT AVSS1 AVSS2 CPU INTERFACE SERVO AUTO SE...

Page 28: ...Q 23 22 21 20 19 RFAC VCA VCC DVC RW ROM VC RW ROM DVC 3 A B C D B C A A A B C D B C D D 1 2 APC AMP 5 6 7 8 9 4 RFAC SUMMING AMP RW ROM APC OFF Hi Z RW ROM H L VOFST VC RW ROM 10 11 GM GM 18 17 16 B D A C 13 14 15 12 EQ IN LD PD GND A B C D AC SUM E F DVCC DVC RFAC SW DC OFST RFDCI RFDCO VC RFC VFC BST RFG VCC CEI CE TE BAL TE FEI FE ...

Page 29: ... TUNER L CD L AUX L OUT L OUT R TON_L L TON_L R AUX R CD R VSS TON_H R TON_H L TAPE L TAPE R IC301 BD3881FV MAIN Board 1 2 3 4 5 6 7 8 9 CONTROL LOGIC TSD VREF OUT2 OUT1 RNF VM VCC FIN GND RIN IC604 BA6956AN IC603 PST3445UL CONTROL Board ...

Page 30: ...et signal input from the reset IC IC603 Resonator terminal 32 768kHz Resonator terminal 32 768kHz Ground terminal Resonator terminal 8 64MHz Resonator terminal 8 64MHz Power supply terminal Key AD input 1 Key AD input 2 Encoder signal input from the bass encoder Encoder signal input from the treble encoder Encoder signal input from the volume encoder RDS signal level input from the tuner Tape swit...

Page 31: ...al output to the CD unit Latch signal output to the CD unit Data output to the CD unit SUBQ clock output to the CD unit Ground terminal Power supply terminal RDS data input from the tuner Stereo mono detection signal input from the tuner Tuner tuned status signal input SENS signal input from the CD unit LD ON signal output to the CD unit SUB Q data input from the CD unit Clock output to the CD uni...

Page 32: ...h mark 0 are critical for safety Replace only with part number specified 32 CX LFA500 SP Singapore model TW Taiwan model 1 A 4737 500 A CD DOOR ASSY 2 4 247 756 01 CABINET TOP 3 1 693 619 11 TUNER FM AM AEP UK 3 1 683 620 11 TUNER FM AM EXCEPT AEP UK 04 1 555 795 00 CORD POWER EXCEPT TW KR Ref No Part No Description Remark Ref No Part No Description Remark 04 1 769 079 12 CORD POWER KR 04 1 783 53...

Page 33: ...E51 60 A 4734 835 A CONTROL BOARD COMPLETE AUS SP TW KR 61 4 245 219 01 BUTTON FUNCTION 62 4 245 222 01 BUTTON CD 63 4 231 841 01 SPRING HEART CAM B 64 4 242 318 01 OIL DMPR 70 65 1 796 351 51 MECHANISM SINGLE CASSETTE 66 4 245 225 01 PANEL R 67 4 247 752 01 RUBBER FOOT 68 4 245 227 01 WINDOW DISPLAY EXCEPT AEP UK 68 4 245 227 11 WINDOW DISPLAY AEP UK 69 4 231 825 01 CAM B HEART 2 7 685 647 79 SCR...

Page 34: ... EXCEPT AEP UK KR 2 7 685 647 79 SCREW BVTP 3X10 TYPE2 N S 4 7 682 561 09 SCREW B 4X8 Ref No Part No Description Remark Ref No Part No Description Remark not supplied not supplied PT801 not supplied not supplied not supplied not supplied 101 103 104 108 2 2 4 2 2 2 2 7 3 Chassis Section The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part nu...

Page 35: ...1 PULLEY LDG 158 4 221 816 01 BELT CDM55 159 4 227 598 01 SPACER 55 160 4 220 238 01 GEAR B 161 4 220 229 02 LEVER SW 162 4 220 239 01 SPRING TORSION 163 A 4728 536 A CD BOARD COMPLETE 164 A 473 508 2A MAGNET 165 4 231 777 02 SHEET KH2 166 4 244 962 01 HOLDER C213 167 4 985 672 01 SCREW PTPWH M2 6 FLOATING 168 4 229 358 01 SHAFT BU21 169 4 227 549 11 INSULATOR 170 4 244 959 01 SPRING T213 COMPRESS...

Page 36: ...ECTION KSM 213D 0601 A 4735 357 A BASE ASSY OP KSM 213D Ref No Part No Description Remark The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified 601 Ver 1 2 2003 11 ...

Page 37: ...ERAMIC CHIP 33PF 5 50V C140 1 115 156 11 CERAMIC CHIP 1uF 10V C143 1 164 360 11 CERAMIC CHIP 0 1uF 16V C145 1 164 360 11 CERAMIC CHIP 0 1uF 16V C146 1 107 826 11 CERAMIC CHIP 0 1uF 10 00 16V C153 1 164 360 11 CERAMIC CHIP 0 1uF 16V C159 1 162 969 11 CERAMIC CHIP 0 0068uF 10 25V C162 1 126 382 11 ELECT 100uF 20 00 16V C163 1 126 933 11 ELECT 100uF 20 00 16V C165 1 164 360 11 CERAMIC CHIP 0 1uF 16V ...

Page 38: ... 11 ELECT 22uF 20 00 25V C613 1 164 156 11 CERAMIC CHIP 0 1uF 25V C614 1 164 156 11 CERAMIC CHIP 0 1uF 25V C615 1 164 156 11 CERAMIC CHIP 0 1uF 25V C616 1 162 918 11 CERAMIC CHIP 18PF 50V AEP UK E51 C616 1 162 912 11 CERAMIC CHIP 7PF 50V AUS SP TW KR C617 1 162 919 91 CERAMIC CHIP 22PF 5 00 50V C618 1 162 921 11 CERAMIC CHIP 33PF 5 50V C620 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C621 1 162 970 11...

Page 39: ... 1 249 417 11 CARBON 1K 5 1 4W F R618 1 249 417 11 CARBON 1K 5 1 4W F R619 1 216 845 11 METAL CHIP 100K 5 1 10W R620 1 216 829 11 METAL CHIP 4 7K 5 1 10W R621 1 216 821 11 METAL CHIP 1K 5 1 10W R622 1 216 835 11 METAL CHIP 15K 5 1 10W R623 1 216 817 11 METAL CHIP 470 5 1 10W R624 1 216 073 91 RES CHIP 10K 5 1 10W R625 1 216 825 11 METAL CHIP 2 2K 5 1 10W R626 1 216 833 11 METAL CHIP 10K 5 1 10W R6...

Page 40: ...CHIP 1 5K 5 1 10W R723 1 216 824 11 METAL CHIP 1 8K 5 1 10W R724 1 216 826 11 METAL CHIP 2 7K 5 1 10W R725 1 249 424 11 CARBON 3 9K 5 1 4W F R726 1 218 867 11 METAL CHIP 6 8K 5 1 10W R727 1 216 845 11 METAL CHIP 100K 5 1 10W R728 1 249 425 11 CARBON 4 7K 5 1 4W F R729 1 249 425 11 CARBON 4 7K 5 1 4W F R730 1 249 417 11 CARBON 1K 5 1 4W F R731 1 216 833 11 METAL CHIP 10K 5 1 10W R732 1 216 830 11 M...

Page 41: ...F 10 50V C333 1 126 933 91 ELECT 100uF 20 00 16V C334 1 162 963 11 CERAMIC CHIP 680PF 10 50V C335 1 164 230 11 CERAMIC CHIP 220PF 5 00 50V C338 1 126 960 11 ELECT 1uF 20 00 50V C339 1 126 960 11 ELECT 1uF 20 00 50V C344 1 126 933 11 ELECT 100uF 20 00 16V C345 1 104 665 11 ELECT 100uF 20 00 10V C351 1 126 963 11 ELECT 4 7uF 20 00 50V C352 1 126 956 91 ELECT 0 1uF 20 00 50V C353 1 126 956 91 ELECT 0...

Page 42: ... L301 1 456 094 11 COIL OSC 85KHZ BIAS L401 1 414 142 21 INDUCTOR MICRO 1 0uH L402 1 414 142 21 INDUCTOR MICRO 1 0uH L403 1 414 142 21 INDUCTOR MICRO 1 0uH CONNECTOR PN401 CONNECTOR 7P TRANSISTOR Q201 8 729 230 49 TRANSISTOR 2SC2712L TE85R Q203 6 550 294 01 TRANSISTOR 2SB1342 Q204 6 550 333 01 TRANSISTOR 2SC5343GL Q205 6 550 333 01 TRANSISTOR 2SC5343GL Q206 6 550 333 01 TRANSISTOR 2SC5343GL Q207 8...

Page 43: ...P 1 2K 5 1 10W R262 1 216 825 11 METAL CHIP 2 2K 5 1 10W R263 1 244 367 81 METAL OXIDE 0 22 5 1W R264 1 216 809 11 METAL CHIP 100 5 1 10W R265 1 216 821 11 METAL CHIP 1K 5 1 10W R266 1 216 822 11 METAL CHIP 1 2K 5 1 10W R267 1 216 835 11 METAL CHIP 15K 5 1 10W R268 1 249 417 11 CARBON 1K 5 1 4W F R269 1 216 809 11 METAL CHIP 100 5 1 10W R270 1 216 833 11 METAL CHIP 10K 5 1 10W R271 1 216 015 00 ME...

Page 44: ... R398 1 216 809 11 METAL CHIP 100 5 1 10W R399 1 216 815 11 METAL CHIP 330 5 1 10W R402 1 249 398 11 CARBON 27 5 1 4W F R403 1 216 838 11 METAL CHIP 27K 5 1 10W R404 1 216 838 11 METAL CHIP 27K 5 1 10W R405 1 218 446 11 METAL CHIP 1 5 1 10W R406 1 249 381 11 CARBON 1 5 1 4W F R407 1 218 446 11 METAL CHIP 1 5 1 10W R408 1 218 446 11 METAL CHIP 1 5 1 10W R412 1 216 833 11 METAL CHIP 10K 5 1 10W R413...

Page 45: ... AM AEP UK 3 1 693 620 11 TUNER FM AM EXCEPT AEP UK 04 1 555 795 00 CORD POWER EXCEPT TW KR 04 1 769 079 12 CORD POWER KR 04 1 783 531 32 CORD POWER TW 65 1 796 351 51 MECHANISM SINGLE CASSETTE 173 1 757 055 11 WIRE PARALLEL FFC 16 CORE 0601 A 4735 357 A BASE ASSY OP KSM 213D M102 X 2625 769 1 GEAR ASSY MB RP MOTOR SLED M901 A 4735 337 A MOTOR LD ASSY TRAY 0PT801 1 439 658 11 TRANSFORMER POWER AEP...