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LCD-D1506 -- Service Manual

1. 4 4 SG gt A 4 Holder 5 Stand Fig 01 L4531DC 4 2 12 Front Cabinet 10 Speaker Speaker Holders S 11 8 LCD Main CBA Unit amp Liquid Crystal Panel Unit 6 Jack Holder S 6 4 3 L4531DC TV Cable Wiring Diagram Function CBA To Liquid Crystal Panel Unit LCD Main CBA Unit Gw CN311 CN312 Main CBA CN103B CN102B CN101B L 34 Me CN103A CN102A 101 To Liquid Crystal Panel Unit gt To Speaker CN801 NY C To Speaker IR Sensor CBA CLM53 Fig 03 4 4 L4531DC HOW TO INITIALIZE THE LCD TELEVISION To put the program back at the factory default initialize the LCD television as the following procedure How to initialize the LCD television 1 Turn the power on Use main power on the TV unit 2 To enter the service mode press STANDBY 2 7 1 and MUTE buttons on the remote control unit in that order within 5 seconds To cancel the service mode press STANDBY button on the remote control 3 Toinitialize the LCD television press DISPLAY button on the remote control unit 4 Confirm FF indication on the upper right of the screen 5 1 L4620INT ELECTRICAL ADJUSTMENT INSTRUCTIONS General Note CBA 15 abbreviation for Circuit Board Assem bly NOTE Electrical adjust
2. Mm VI4 lt ro 81215510 e H El H WE E 5 LCD MAIN 1 2 ED LCD MAIN 1 2 NY 0971 IMZ4T 108 097 6972 L45205CL2 Main CBA Top View CAUTION Fixed voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply NOTE Otherwise it may cause some components in the power supply circuit to fail CAUTION For continued protection against fire hazard replace only with the same type fuse Because a hot chassis ground is present in the power supply circut an isolation transformer must be used Also in order to have the ability to increase the input slowly when troubleshooting this type power supply circuit a variable isolation transformer 15 required The voltage for parts in hot circuit is measured using hot GND as a common terminal dios quu BO w 2 B 3 0433 y R418 lt 4 o 5 4 I 1 M 1 5 JK1 701 E st a MG 2 52 E 0805 a gt 4 55466 0502 3 23 J331 2 B L ADJ COL 4
3. eoe doJj pJezeu 1sureDe penunuoo 10 4 i NOILOVO 01 Aj ddns Jamod y ui sjueuodujoo esneo y Ajddns Oy eui eui 12euuoo 810190 JOU 13 10921 v V II 2090 V E V 3141 SENIE 350I99 8090 9090 1091 V V 1 Vr 1 1094 _ ________ __ _ gt __ __ ________3 gt gt _ __ ________ _ _ __ _ ___ ___ __ _ ___ ___ ___ _ _ _ gt _ ____ _ _ gt _ ___ _ _ gt __ ___ _ 1 93 V LINDYID LOH Ajddns Jamod 60 ui sjueuoduuoo IC yey ees o 998 9 SI 1094 9574 UIEN yun 14 u pesn 1 1I II Ajddns Jemod 9 C1 8 85 01 V 10 i ss 8 OV L09 V V L4520BLP 1 5 LCD Backlight Block Diagram LHS 5 01 3109 10410 1N3434N9 H3AO 39VL10A H3AO ScvO 2 Lo 8 DE 6 10410 H3AO c v zcvo O ot Us v 1 4 4 LAS 09 6 V89 NIVIN OH LNOO 5 2 0 2 VCV
4. 19 Note of Capacitors ML Mylar Cap LL Metallized Film Cap SC Semiconductor Cap L Low Leakage type Temperature Characteristics of Capacitors are noted with the following 10 0 60 ppm C CSL 350 1000 ppm C Tolerance of Capacitors are noted with the following Z 80 20 Note of Resistors Cement Res MTL Metal Res F Fuse Res Capacitors and transistors are represented by the following symbols CBA Symbols Schematic Diagram Symbols Top View Bottom View Digital Transistor 1 Electrolytic Capacitor is Que Bottom View x x Transistor or Digital Transistor E C B Top View Top View 3 Transistor PNP Transistor ECB ECB Top View Top View NPN Digital Transistor SS PNP Digital Transistor ECB ECB 8 1 LCAP SC LIST OF CAUTION NOTES AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOWING PAGES 1 CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE ONLY WITH THE SAME TYPE FUSE 2 CAUTION Fixed Voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown first check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail 3 Note 1 Do not use the part number shown on the drawings for o
5. 2124 o 01660 ee 3368 n 2 5 D639 s 6 ez _ The ALE Paes ae SP GND 32 ei e lt 00 977 FAL e ole GND 1 0 5 ME R1664 o 3164 5 a ao X 124 lt 2 5 2 lt Sasa TR g C1602 6 1 lt 20 i 7149 qu E ry 2 P ON H 5 2 e a 25 9 1666 9 3 gt lt 61654 ee 7 5 GND 2 25 2137 10 12 e gt S o 653 GND 2 R660 o gt 1 IM lt 81681 J131 o d On w Zin 1674 GND e 1355 SSS 2 R1680 usd 5 9 00 6 P ON 5V1 Namma A J 99 88 2 2 1124 E 2 B 2 29 Orne a JF TE 4 3122 IP AN amp es Des E gt Amon 101652 1657 sm 849 A MUTE L834 e e C1804 eee 8807 e D655 T D1612 am 9 7 MERA NN 3 20 BO R1808 PROTECT 1 E 0 0658 gt 2 o 2 9 S mls 18124 rH A EE B ACA e f sao NEM
6. ep gt A A 7 2 15 0559 1359 m 000 N exe i 5 gt WARNING TO PREVENT ELECTRIC 95559 JL s E 2547 1091 f 10975 1 801 0807 2097 6601 BROWN 5 CM53 PI N 1 4 F SHOCK AND FIRE HAZARD 0 250 V Fo 601 DISCONNECT MAINSPLUG BEFORE FUSE REPLACEMENT AND REPLACE C 0 0 ONLY WITH MARKED IC801 FH602 p 4 e 8 11 BL4520F01012 1 Function CBA Top View m s CH DOWN POWER SW32 55 1 ol 1 H5 BLES 5 34 5V33 VOL DOWN V0L UP A cH up 9 dP ES R33 _ 22 2 30 N Y J330 ALL 5V __ Function CBA Bottom View SS DOWN R29 5 32 2 N 2 wz zm Oz ac A 4 5131 533 5434 UP 4520201012 2 e 4 os AS 11v oeer 82 BL4520F01012 2 8 12 IR Sensor CBA Top Bottom View 89 gt BL4520F01012 3 WAVEFORMS WF8 Waveforms to be observed at Waveform check points Shown in Schematic Diagram Input PAL Color Bar Signal with 1kHz Audio Signal E Pin 14 of IC801 MZ Pin 3 of CN103A Pin 9 of CN103A Pin 1 of IC781 Pin 2 of CN103A S VIDEO Y 0 2V MA Pin 13 of IC781 E Pin 1 of CN103A S VIDEO C 0 2V 20us 9 1 L4620WF WF9 WF
7. 2 gt A 5 19 ZENER DIODE DZ 22BSBT265 NDTBOODZ22BS 2 DIODE DZ 6 2BSBT265 NDTBODZ6R2BS 20060712 13 4 L4520EL Ref No No Description PartNo No E 5754 MM NY p mj EN o AN QPEL561L11AV PHOTO COUPLER PS2561L1 1 A V L VOLTAGE REGULATOR LD1117SC R or NSZBAOTSS229 VOLTAGE REGULATOR LM1117S ADJ NSZBAOT2T001 IC VOLTAGE REGULATOR 5V KIA7805API P or NSZBAOSJY041 VOLTAGE REGULATOR KA7805A NSZBAOSF3052 IC VOLTAGE REGULATOR 5V KIA7805API P or NSZBAOSJYO41 VOLTAGE REGULATOR KA7805A NSZBAOSF3052 IC SWITCH TC4053BF EL QSZBAOTTS163 IC AN17812A QSZBAOSMSO017 IC AUDIO PROCESSOR MSP3417G QG B8 V3 NSZBAOSP3005 IC SWITCHING TC4052BF ELNF or QSZBAOTTS162 IC SWITCHING CD4052BCSJX NL or NSZBAOTF3137 IC SWITCHING CD4052BNSR NSZBAOT TYO91 COILS A C Ni 2 2 0 O gt GOO O O L632 INDUCTOR 22uH J 26T LLAXJATTU220 L741 INDUCTOR 12uH J 26T LLAXJATTU120 L781 INDUCTOR 22uH J 26T LLAXJATTU220 L831 L832 L833 L834 INDUCTOR 18uH J 26T INDUCTOR 10uH J 26T INDUCTOR 47uH K 5FT PCB JUMPER 00 6 5 0 INDUCTOR 10uH J 26T PCB JUMPER 00 6 5 0 PCB JUMPER 00 6 5 0 INDUCTOR 2 24 H K 5FT INDUCTOR 2 24 H K 5FT 840 INDUCTOR 2 24 H K 5FT TRANSISTORS TRANSISTOR 2SA1576A T106R NPN TRANSISTOR POWER 25 4881 LLAXJAT TU180 LLAXJAT TU100 LLARKBSTU470 JW5 0T LLAXJATTU100 JW5 0T
8. _ gt gt gt waw ww w m wr w gt gt gt __ gt X 6 H3HA g HHHA 9 H3HA S H3HA 3438 LO Y CN CV CN N 95 5 5 O clo ikku S H3HA gt ae L06 4 70 9 4 969 SET Ef 3 1000VI 921 6 268 0 8 ISBAO S 8 L 8 0LNO VEOLNO 3908 OACIA Al OL L4520BLLCD Power Supply Block Diagram C L 3109 o INVHOVIG 19019 1 193108d WALSAS OL NO ASZ d H NO d 0 AOv V o 1 00101 L AZZ ANI 83 IV 4 AS NO d 9 IV o AS 7 IV o AG C IV 94 AEE IV o N A M98 3MV 5 18188 9 pore 01 AE EFTINVW neroL taNve o 1 86019399 1 e 3 8 IVI0IM P LL 8 20121 1 53 LAE Art elk L0L2I AS 1V AE ETT AEEHTV OL 990LM VEOLND L LINN 89 NIVIN 037 Jeu WIS e 10 paunseau si INDIO joy ui sued ay LON A80L DIY i v esnj ad owes ay
9. CHIP CERAMIC CAP 1608 0 01uF 50V LCD B1506 0430 CAP METALIZED FILM 0 056 250V J ECWF2 CT2E563MS041 00156 LCD D1506 CAP METALIZED FILM 0 056 250VDC J MPEF CT2E563DT051 C431 ELECTROLYTIC CAP 22uF 50V M or CE1JMASDL220 ELECTROLYTIC 22uF 50V M or CA1J220SP085 PARTS produced in CHINA CHIP CERAMIC CAP 1608 K 0 01uF 50V C C CHIP CERAMIC CAP 1608 K 0 014 F 50V IN A IPTE CRYSTAL PANEL UNIT CHIP CERAMIC CAP 1608 B K 0 014F 50V gt CHIP CERAMIC CAP 1608 K 0 01uF 50V C MMA CBA 00 Description Part No ACER C469 CHIP CERAMIC CAP 1608 B K 0 01uF 50V CHD1JK30B103 M 1ESA13359 TA Consists of the following y C470 CAP METALIZED FILM 0 056uF 250V J ECWF2 CT2ES63MS041 MAIN CBA FUNCTION CBA Lm CAP METALIZED FILM 0 056 250VDC J MPEF CT2E563DT051 IR SENSOR CBA 0471 ELECTROLYTIC CAP 224 F 50V M or CE1JMASDL220 ELECTROLYTIC 224F 50V M or CA1J220SP085 MAIN CBA ELECTROLYTIC CAP 22uF 50V CE1JMASTM220 0501 ELECTROLYTIC 22uF 50V M H7 or CE1JMAVSL220 pescription PartNo ALUMINUM ELECTROLYTIC 224F 50V H7 CE1JMAVSM220 gt C502 CHIP CERAMIC 1608 B K 0 01uF 50V CHD1JK30B103 OnSISIS Of the TONOWINO 0503 ELECTROLYTIC CAP 2204F 18V M H7 or CE1CMASSL221 ELECTROLYTIC 220uF 16V M H7 CE1CMASSM221 CHD1JK30B103 CERAMIC CAP IEDR 010060 CHIP
10. 2 e TA ee 8 73 e C718 1277 H S pes ALL5V 8735 Toe 2 R775 8 494 1 gt 5 S 0461 211 olv 0504 D669 5 e lt ee 9 ASIA lt e TTB osse 41 UE a o AA C462 0463 EE or D n o s mu i x JaA r 22V c gt S mis R872 oe 908 o 3 r15 560 R511 N o Sa VD H NZ 5 14 2 oo 5 mo 206 J250 L761 e 2 C 212722 B C 55 9 5670 5 781 3 NE R509 2 m Pi 2 E ALLsDe5V 2 1 5 8 h 2 NN RE 5 98 akel e sou amp 2 aHa 6 55 E 514 ali oa Ts es m 16602 2 LI ee 2 B J372 E cer el R522 R507 J24 o Cm n A R467 E R523 crm AI E 2 53 ee j 5 20V e z o 664 0632 m MU EM 52 oj DN J226 RS PIN 1 3 OF R470 5 E 559 C ee 20 INPUT 0 J220 Y 5 2 6 3 0976 WIL IM I I 0213 3t o 354 om Un M RS e 20 IC781 GND J202 co 2 e te e XM 0633 Oe o
11. 85 S Sie SES gt gt II 223 5 Jise SP Lch 5 R875 E als 3176 29 TAEA al al a E z es J175 C J177 ea 335 NOM E ill 5 er NUT 5 5 5 2 01653 C i H V CAUTION R795 a a Ems 7154 JK723 J190 R663 E gt 4 lt VOLUME T nr R1656 1 1 E R662 0660 0712 Teo Na nm 3119 2 J164 l al 6525 wdc gt X 0661663 8 2 lt 1158 6 LI 5 CL XC THs D663 Bor 25 CL um E 2 33 ES ES 22 AJT s 0087 871 gt gt a UCONN II II gt BIG itt 52 5 Ae 2 E 62 II ol Je e o z Ta PIM gt 6887 ob ES 8515 2 H 76 JE 2112 L1 gt e S Sala 76606 61 602 RI FA Sel 90 0 Yos D 5 gt 1 E 7 8 I 0705 P AA gt o 6632 R631 L 5 ____143 GND GND NS x 4 2255 7 4 3 C a JK724 CO rare e S 4 4 ES Ke C ds 2 AN oN y e gt oi J135 7 011 zw A CNI 651 131 Sle 2 2 GND 1355 zje 4 2 A
12. NN 5 L S IN N N O E 4 S999 IIIS 8888 9999 lt O 555552255 Sos 5 1 7 20 SL E 5 44 7 d 7 B18 El E 08 O rs S 8 1 gt o lt i too c c x SE 2i a D 6 SESS m LO O tO O Mo aale 7 gt Ns 6 9 O O IO O gt 4 4 4 4 L4520EX 11 1 Packing 2 16 2 17 NUN X5 X3 gt A D gt cms 1 A A 3 1 X2 2 o Ti pi Comparison Chart of TOO A 2 8 X29 Models and Marks X2 5 X2 6 2 2 X2 3 2 10 2 11 A IX2 7 2 12 X2 1 2 4 I I Some Ref Numbers are not in sequence 11 2 L4520PEX MECHANICAL PARTS LIST PRODUCT SAFETY NOTE Products marked with a N have special characteristics important to safety Before replacing any of these components read carefully the product safety notice in this service manual Don t degrade the safety of the product throug
13. CAUTION 1 The Flat Pack IC shape may differ by models Use an appropriate hot air flat pack IC desoldering machine whose shape matches that of the Flat Pack IC 2 Do not supply hot air to the chip parts around the flat pack IC for over 6 seconds because damage to the chip parts may occur Put masking tape around the flat pack IC to protect other parts from damage Fig S 1 2 3 The flat pack IC on the CBA is affixed with glue so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it Hot air Flat Pack IC Desoldering Machine Masking Tape Tweezers Flat Pack IC Fig 5 1 2 5 With Soldering 1 Using desoldering braid remove the solder from all pins of the flat pack IC When you use solder flux which is applied to all pins of the flat pack IC you can remove it easily Fig S 1 3 Desoldering Braid Flat Pack IC Soldering Iron Fig S 1 3 Lift each lead of the flat pack IC upward one by one using a sharp pin or wire to which solder will not adhere iron wire When heating the pins use a fine tip soldering iron or a hot air desoldering machine Fig S 1 4 Fine Tip Soldering Iron Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 Release the flat pa
14. 285 to 295 Color analyzer y 295 to 305 Figure It carries out in a darkroom Perpendicularity gt LI INPUT WHITE 80 Color Analyzer 1 Operate the unit for more than 20 minutes 2 Input the White Purity 3 Setthe color analyzer to the CHROMA mode and bring the optical receptor to the center on the CD Panel surface after zero point calibration as shown above Note The optical receptor must be set perpendicularly to the LCD Panel surface 4 RF AV2 CVBS Enter the Service mode Press VOL w button on the remote control unit and select C D S 1 mode AV1 RGB Enter the Service mode Press VOL w button on the remote control unit and select C D S 2 mode 5 RF AV2 CVBS APL 80 Press 6 button to select DB C D S 1 for Blue adjustment Press 4 button to select DR C D S 1 for Red adjustment When value and value are not within specification adjust DB C D 5 1 or DR C D S 1 Refer to 1 Initial Setting RF AV2 CVBS APL 40 Press 3 button to select COB C D S 1 for Blue adjustment Press 1 button to select COR C D S 1 for Red adjustment When x value and value are not within specification adjust COB C D S 1 or COR C D S 1 Refer to 1 Initial Setting 6 3 AV1 RGB APL 80 Press 6 button to select C DB C D S 2 for Blue adjustment Press 4 button
15. 58 955 al CN103A 6 56 l C955 C954 68 C 68P 0000 TP335 D TP333 D ojoj gt 53 Y m pa C903 68P D d C904 10308 SB g 0907 68P WF 14 12908 8908 56 WF 13 C352 C364 0 1 IL 51 D 11177 LCD_MAIN 2 2 CLKV STV1 m D m m 20 D F1 _ 8394 100 S VIDEO C ne pem C X i AAA OA R396 100 A 10301 LOU lO li 2222 4 2 Hay O E mo e p El REGULATOR LCD SIGNAL PROCESS 5999299559595585859555559585855555959858 amp P558558888585888558888 00033 Nm M 5V 0 12 H345 56 12 24 hee cena METE IL RAPI
16. CBA 10 Speaker s 1 Rear Cabinet 2 Stand A 6 Jack Holder x 8 Bracket x y 7 Main CBA 4 Holder 1 8 LCD Main CBA Unit amp Liquid Crystal Panel Unit 5 Stand B 9 Function CBA 12 Front Cabinet LL 2 Disassembly Method Removal Step Remove Unhook Loc Unlock Release No Unplug Unclamp Desolder Rear Baws KJ D2 Main CBA CN53 CN101B CN102B CN103B CN401 CN403 CN801 802 LCD Main CBA Unit amp Liquid 11 S 9 CN106 5 S 10 Crystal Panel Unit Function CBA Removal Remove Unhook Unlock Release Unplug Unclamp Desolder S 11 Speaker Holder 10 Speaker s ESE 12 y 1 Note 1 Order of steps in procedure When reassembling follow the steps in reverse order These numbers are also used as the Identification location No of parts in figures 2 Parts to be removed or installed 3 Fig No showing procedure of part location 4 Identification of parts to be removed unhooked unlocked released unplugged unclamped or desoldered P Spring L Locking Tab S Screw CN Connector z Unhook Unlock Release Unplug or Desolder e g 2 S 2 two Screws 5 2 2 L 2 two Locking Tabs L 2 b Refer to the following Reference Notes in the Table Front _ 2 3 4 1 L4531DC 1 Rear Cabinet 3 Bracket
17. m 1 LINN V8 0301 0 aa C lt NOILO3NNOO ON gt 09 6 AHOLOV LV inawisnray N3do sn8 uovausn elano 05 51901 0 2 2 lt NOLLO3NNOO ON gt 0105 LSZAP QNS 3 e 208 S 1120 1 19245 C08M LO8NO 108 S Gra 108M19 V 9V mos d1 vv oa ms 0 3 gd 084 83 093 0 g3 Lv 9 9V VV LY N stis TANVd 66 pae M 6 13MV9 LE AND lse NODA 06 c H3HA 82 294444 09012 090 92 g 2390 62 9 H3HA edo 438 ez 89439 990126 z 0439 0 8O 02 0210 ao 8 2 9 90 91 AFO 0190 1 344 0 Jor 9 IMV9 6 6 0N 8 1 0 9 H ASZ T3NVd 6 S 1531 Qua t 1 12 LLENO 10 1 EXPLODED VIEWS Cabinet
18. 01 3109 IV L L 5109 ICV ILI5I IX V 8 NV49VI0 5 H3MOd OL INVHOvIG 39018 TOYLNOOD WALSAS OL L4520BLLB 7 6 SCHEMATIC DIAGRAMS CBA S AND TEST POINTS Standard Notes Many electrical and mechanical parts in this chassis have special characteristics These characteristics often pass unnoticed and the protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage wattage etc Replacement parts that have these special safety characteristics are identified in this manual and its supplements electrical components having such features are identified by the mark AN in the schematic diagram and the parts list Before replacing any of these components read the parts list in this manual carefully The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock fire or other hazards Notes 1 Do not use the part number shown on these drawings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared All resistance values are indicated in ohms 10 M 10 Resistor wattages are 1 4W or 1 6W unless otherwise specified All capacitance values are indicated in uF P 1079 LL All voltages are DC voltages unless otherwise specified
19. 03359 A WITCHING B P 1 2 5W m 15 CONTINUE L 150 MAIN 2 4 AL 12V 1 6 BK LCD MAIN CBA CN101A UNIT CN101B E 5 GND 6 PANEL 25V 7 GN HE PANEL 6V D D 0502 KRC103M AT P SWITCHING OND OD OD OI OM OM OO OO OO AO AO Ah AW 8608 8607 180 180 0503 11 4 25016668 10 REGULATOR 0 9603 2862120 0 SWITCHING 5 221732 2 4 25 0 7 AL 3 5V_REGULATOR 0656 0665 L 5V 0 2 ura MAIN 4 4 AL 40V 8659 0649 A 10K 4 0649 I MAIN_1 4 D637 L de PS2561L1 1 A V L 3 OK P ON 5V ERROR AL 33V 3 9 1 BK VOLTAGE DET n aa MAIN 4 4 PROTECT 2 VOLTAGE CHART CN101A Pin No Voltage L4520SCM3 Main 4 4 8 IR Sensor Schematic Diagram A Pa MAIN CBA D403 MTZJT 7718B D405 MAIN 1 4 155400 2 4 INPUT 1 INPUT O UNIT CN102B 11 LIL Jj MM 0421 HAT2215R01 EL CURRENT CONTROL SWITCH VOLUME 7 S INPUT 0 INPUT 1 AFT IN AGC IN PROTECT 1 PROTECT 2 gt E m Z c 1 1 1 1 PROTECT 3 NU 0461 2215 01 EL E 3 CURRENT CONTROL SWITCH GND no 02 2010726 I CIC CI I gt gt M S OJO 0
20. 22uF 25V E a 201 NN E ELECTROLYTIC CAP 47uF 6 3V 5 470 C761 ELECTROLYTIC CAP 1004 F 6 3V H7 or CEOKMAVSL101 ALUMINUM ELECTROLYTIC CAP 100uF 6 3V CEOKMAVSM101 ELECTROLYTIC CAP 104F 50V M H7 or CE1JMAVSL100 H7 0000000 ALUMINUM ELECTROLYTIC CAP 10 50 H7 1 100 C762 CHIP CERAMIC CAP 1608 BK 0 01uF 50V CHD1JK30B103 T N e 20060712 13 2 L4520EL Ref No No Description PartNo No Ref No Description PartNo No C766 ELECTROLYTIC CAP 1004 F 16V M H7 or CE1CMAVSL101 C848 CHIP CERAMIC CAP 1608 Z 0 1uF 50V CHD1JZ30F104 1 ALUMINUM ELECTROLYTIC CAP 1004F 16V CE1CMAVSM101 C850 ELECTROLYTIC CAP 10uF 16V M or CE1CMASDL100 H7 ELECTROLYTIC 10uF 16V M or CA1C100SP085 C767 CHIP CERAMIC CAP 1608 0 1uF 50V CHD1JK30B104 ELECTROLYTIC CAP 10uF 16V M CE1CMASTM100 C768 ELECTROLYTIC CAP 330u F 6 3V M H7 or CEOKMAVSL331 C851 ELECTROLYTIC CAP 3 3uF 50V M or CE1JMASDL3R3 _ 1 ALUMINUM ELECTROLYTIC CAP 3304 F 6 3V CEOKMAVSM331 H7 ELECTROLYTIC CAP 3 3u F 50V M or CA1J3R3SP085 C781 CHIP CERAMIC CAP 1608 0 01uF 50V CHD1JK30B103 ALUMINUM ELECTROLYTIC CAP 50 M CE1UMASTM3R3 C852 CHIPCERAMICCAP 1608 FZ 0 1uF S0V ___ CHD1JZ30F104 853 CHIPCERAMICCAP 1608 FZ 0 1uF S0V CHD1JZ30F104 C854 ELECTROLYTIC 104F 16V Mor CETCMASDL100 wama ELECTRO
21. 2504081T1060 1 8758 0752 C753 JS708 A752 0 100 Al 5 8751 075 75 MI7 0751 1 47 16V JT 776 2B JS710 0 a a RAPID SW A MAIN 4 4 1 RAPID SW ALT5V DIN INSEL MUTE 1 862 10K INPUT 1 8863 10K INPUT O 2 1 4 L 5V AUDIO L IN2 AUDIO R IN2 INPUT O INV INPUT 1 INV TU VIDEO P 0N 5V 3 MAIN 4 4 CONTINUE MAIN 1 4 0 00 gt VOLTAGE CHART CN103A Pin No Voltage L4520SCM2 Main 3 4 Schematic Diagram CAUTION NOTE CAUTION For continued protection against fire hazard The voltage for parts in hot circuit is measured using Fixed voltage or Auto voltage selectable power supply circuit is used in this unit replace only with the same type fuse hot GND as a common terminal If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail 188400 I MAIN 2 4 I m ALT5V 668 525 mus m ag Ae 80 I KIA BOBAPI P 30533 SEES 45V REGULATOR 2862120 0 0083 52556 6 3V 5 8 5V REGULATOR Ji l C D653 TRANS 155400 F601 0666 lt 860 IL 250V MTZJT 775 1B b 6408111060 Y
22. 3 SERVICE MANUAL COLOR LCD TELEVISION LCD A1506 LCD B1506 15 LCD C1506 LCD D1506 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000900000000000000000000000000000000000000000090000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000009000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 900000000090000000000000900000000000000000000000000000000000000000000000000000000000000000000000000 900000000000000000000000000000000000000000000000009000
23. CERAMIC CAP 1608 B 0 014 F 50V CHIP CERAMIC CAP 1608 B 0 01uF 50V ALUMINUM ELECTROLYTIC CAP 100uF 10V CETAMAVSM101 CHP CERAMIC CA 8 KG FS LI CHIP CERAMIC 660608 ELECTROLYTIC CAP 100uF 10V M or CA1A101SP085 C512 CHIP CERAMIC CAP 1608 KO 01uF 50V CHD1JK30B103 ELECTROLYTIC CAP 100uF 10V CE1AMASTM101 513 ELECTROLYTIC CAP 2201 6 3 M H7 or CEOKMAVSL221 CHIP CERAMIC CAP 1608 B K 0 01uF 50V CHD1JK30B103 ALUMINUM ELECTROLYTIC CAP 2204 F 6 3V CEOKMAVSM221 ELECTROLYTIC CAP 1uF 50V CE1JMASDL1RO sli LL ELECTROLYTIC 1uF 50V M or CA1J1ROSP085 C517 ELECTROLYTIC CAP 100uF 16V M H7 CE1CMAVSL101 __ ELECTROLYTIC CAP tuFISOV M DEM ALUMINUM ELECTROLYTIC CAP 100uF 16V CE1CMAVSM101 CHIP CERAMIC CAP 1608 01 50 CHDIJK30B103 C527 ELECTROLYTIC CAP 10uF 50V M H7 or CE1JMAVSL100 20060712 13 1 L4520EL Ref No No Description PartNo No Ref No No Description PartNo No p ALUMINUM ELECTROLYTIC 330uF 6 3V 1 MEN CHIP CERAMIC CAP 1608 B K 0 01uF 50V 21 l 2 1 CHIP CERAMIC CAP 1608 K 0 01uF 50V NE HEN LI FILM CAP P 0 014F 50V J or FILM CAP P 0 0068 50 J or FILM CAP P 0 01uF 50V J or FILM CAP P 0 0068uF 50V J or POLYESTER FILM PB FREE 0 01uF _ CA2A103DTO18 EE POLYE
24. L4520SCL1 LCD Main 2 2 Schematic Diagram Sessa 77 a CN LCD MAIN CBA UNIT LCD MAIN 1 2 AL 5V 21 2 30181 106 RAPID SW ak 3 3 id INSEL MUTE 1426 ome S C JACK MUTE 2DVP RESET BR24L64F WE2 0153 12 63 MEMORY 25 30187106 3 3V lt gt 5V 29 CONVERTER R124 14 63 4 7K PST9129NR 11 64 RESET Q154 eSK3018T106 3 3V 5V CONVERTER 15 63 0155 25K3018T106 20 5 PART CONVERTER FOR CN301 CONTINUE LCD MAIN 1 2 roy 6 16 63 5 K3018T106 TP106 TP105 TP104 TP103 p 22444444 3V gt 5V ONVERTER ii 01 25 8138 3 100 AC REET eD o gt oul C gt gt E EEP SCL gt 9 E 8 EEP SDA c Z2 8 5 3 gt 5 6 lt C7 B SCL SDATA 12145 8 8 SDA LATCH O TP 144 NU AVCC TP143 C174 NU VREF 0 1 ed C Or Or D M gt NU AGC IN 26 02 M AVSS PD o gt oo 2 09 2 2 08 6 EEP SDA KEY IN 1 ED o gt on eD ONU ON Rel roD Mea AN TO FUNCTION EEP SCL KEY IN 2 Cba CM348 CN106 KEY IN 2 ME TP109 NU AFT IN KEY IN 1 2 2 7 N
25. VIDEO I BUFFER SW 3 C707 A708 A 250408171060 0732 1000P 100 725 2SC4081T1050 57801 4 7K MUTE 46 1 9707 SPEAKER 75 R CH 2 2UH 180 C711 A714 47 16V 100 JK722 i ledge pe VIDEO1 HEADPHONE 0784 783 8903 R90 1468 5213 IN 1 JACK 256408114060 75 81 33 10 50v 106 0 10K 1 BUFFER 220 16V T 6720 8795 0713 0747 i ue 42 723 E 1 ing AUDIOA L 57802 A718 712 8716 IN 18K 56000 47K SPEAKER TC4053BF EL N F L CH INPUT SELECT 1 4 gt 1129 CONTINUE A MAIN 3 4 ALt12V VY NY 77 SS El 0872 25C4081T 1060 INVERTER al 4 N CBA UNIT CN103B VIDEO VIDEO VIDEO GN S VIDEO C S VIDEO Y GND 7 TO LCD r s CN103A WF gt O 081T106Q ERTER A780 0 N 4 0 R785 8797 CD Wisk 470 al 0743 R799 100 JK751 SCART_JACK 5 rw 2 00 R775 10K CE INE 1 C 2e 8777 2 2 48k C76 8764 310 3V 75 El i RAPID SW SLOW SW SP MUTE 19 NICAM RESET FBIN 1 MAIN 3 4 AL 5V AL 7 5V 4 3 4 25 0 25A157BAT 1068 BUFFER IC801 AN17812A Fog AMP 0792 25A1576AT106R BUFFER Q791
26. a metering system that complies with American 2 1 National Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL 1410 50 7 With the instrument AC switch first in the on position and then in the off position measure from a known earth ground metal water pipe conduit etc to all exposed metal parts of the instrument antennas handle brackets metal cabinet screw heads metallic overlays control shafts etc especially any exposed metal parts that offer an electrical return path to the chassis Any current measured must not exceed 0 5 milli ampere Reverse the instrument power cord plug in the outlet and repeat the test LEAKAGE CURRENT TESTER READING SHOULD NOT BE ABOVE 0 5 mA DEVICE BEING TESTED TEST ALL EXPOSED METAL SURFACES ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED EARTH GROUND ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES Read and comply with all caution and safety related notes on or inside the receiver cabinet on the receiver chassis or on the LCD module Design Alteration Warning Do not alter or add to the mechanical or electrical design of this LCD TV receiver Design alterations and additions including but not limited to circuit mod
27. rx 3128 GND C2 101651 1580 5 a E SONS 85 E EI I FF am m D632 2 JUL 262 HE sa m 4 0831 GND 15 E C854 1124 e se 354 R635 25803 0M 5V SNE E et GND o a n 9 3 Pi 807 223 1349 PROTECT 1 L i D658 L602 D H J3 f RE 2 56 0806 4 1 CI53 WARNING TO PREVENT ELECTRIC o 0 SHOCK AND FIRE HAZARD BROWN 0601 TLAH 250V DISCONNECT MAINSPLUG BEFORE C6 J101 FUSE REPLACEMENT AND REPLACE 25 ONLY WITH MARKED 56 I FH602 On o C660 D616 C612 8 10 BL4520F01012 1 Main CBA Bottom View CAUTION CAUTION Because a hot chassis ground is present in the power For continued protection against fire hazard Fixed voltage or Auto voltage selectable power supply circuit is used in this unit supply circut an isolation transformer must be used replace only with the same type fuse If Main Fuse F601 is blown check to see that all components in the power supply Also in order to have the ability to increase the input circuit are not defective before you connect the AC plug to the AC power supply slowly when troubleshooting this type power supply Otherwise it may cause some components in the power supply circuit to fail circuit a variable isolation transformer is required N
28. to select C DR C D 5 2 for Red adjustment When value and value are not within specification adjust C DB C D S 2 or C DR C D S 2 Refer to 1 Initial Setting AV1 RGB APL 40 Press 3 button to select C COB C D S 2 for Blue adjustment Press 1 button to select C COR C D S 2 for Red adjustment When value and y value are not within specification adjust C COB C D S 2 or C COR C D S 2 Refer to 1 Initial Setting Turn the power off and on again Main power button on the TV unit L4520EA L4520BLS BLOCK DIAGRAMS System Control Block Diagram ee VT OU e veo 803 qasn SI SOLNO gt EE vas Z 5 21706 a sasa 0I0 V OL I3S3H WVOIN 02 13538 AVON 02 E 90LM NOLLO3NNOO ON lames 1 2 atm co D Ea ore EIC a os 4 MT won i p 12 12 Ns Wvuovia X 019 O3QIN310L EE HH EET maras gt OO 25706 4 112 84 2 i SL MS S 91 i 2 e T a
29. 0 011 CI 0D I0 I gt 1C 25 4881 SWITCHING G402 254950 0 SWITCHING 8403 R415 R416 8417 R419 8420 33 33 33 33 33 WIRE 35 3 _ 35 4 03 0 8 256408111060 3 PWM CONTROL T401 INVERTER TRANS 0425 295904081 I 1060 2207 CURRENT PROTECTOR 1402 INVERTER TRANS Q464 25C4081T 1060 SWITCHING 0406 28C2120 0 SWITCHING D409 MTZJT 7710B 1 VOLTAGE PROTECTOR 0422 25 408171060 ue VOLTAGE PROTECTOR Q432 25C40841 1060 Cue VOLTAGE PROTECTOR Q462 25C4081T 1060 I VOLTAGE PROTECTOR Q463 25C4081T1060 20 PROTECTOR 8 6 CM404 Y BACK 1 LIGHT 1 2 BACK 1 LIGHT LED ES MODULE MAIN 3 4 INV 22V AL 40V MAIN 2 4 VOLUME PROTECT 1 3 2 PROTECT 2 CONTINUE L632 MAIN 2 4 AL 5V IH SENSOR CBA 5 6025 2 2 SENSOR VOLTAGE CHART CN102A Pin No Voltage L4520SCM4 Function Schematic Diagram FUNCTION CBA SW30 SN31 SW3e SW33 5V34 5V36 PONER CH_UP CH DOWN VOL UP VOL DOWN AN LCD MAIN 80 UNIT CN106 I CN31B AS UNLESS OTHERWISE SPECIFIED SWITCHES ARE SKHHARAO10 L 8 7 L4520SCF LCD Main 1 2 Schematic Diagram VIDEO SIGNAL 391 100P LCD MAIN CBA UNIT TP322 TP323 C392 C393 CN1038 C384 A391 100 a
30. 0000000000 900000000000 000000000000 000000000000 000000000000 000000000000 000000000000 6000000000000 000000000000 o o 9 9 9 9 o 990 990 990 990 000 990 990 000 990 990 990 0000000000000 99 99 99 99 9 9 9 9 9 9 9 9 9 9 9 o o o 15 COLOR LCD TELEVISION LCD A1506 LCD B1506 LCD C1506 LCD D1506 TABLE OF CONTENTS 836C 68 0 5 ISA AA 1 1 Important Safety Precautions 4 odes doe el tate dc 2 1 Standard Notes for 3 1 Cabinet Disassembly Instructions 4 1 How to Initialize the LCD 5 1 Electrical Adjustment Instructions ria ii a aa 6 1 166809805 sit SUR AA Mb Nate S tard J aie 7 1 Schematic Diagrams CBA s and Test 5 8 1 tibio 9 1 Winnog Diagram stars 10 1 Exploded VIEW uu 11 1 Mechanical 12 1 EISE 2 49 knees 13 1 The LCD panel i
31. 00000000000000000000 0000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000 0000000000000000900000000000000000000000000000000000009000 0000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000 000000000 0000000000000000000 0000000000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 00000000000 00000000000 90000900000 00000000000 60000000000 00000000000 00000000000 000000000000 000000000000 00000000000 00000000000 000000000000000000 000000000000000000 000000000000 000000000000000000 000000000000000000 9900000000000 000000000000 900000000000 900000000000 900000000000 000000000000 000000000000 900000000000 900000000000 900000000000 900000000000 00
32. 0000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 000000000000000000 900000000000000000 000000000000000000 900000000000000000 0000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000 00000000000000000000000000000000000000
33. 002 CHIP RES 1608 1 10W or RRXAZR5Z0000 RRXAJR5Z0222 CHIP RES 1608 1 10W or RRXAZR5Z0000 gt HHE FEE 5 5 822235 5 22258 2 2225 3 2283 gt 55526 20060712 13 L4520EL 2 Ref No No Description PartNo No Ref No No Description PartNo No A604 C E EN REN 221 Es A LC CHIP 8685 1608 1 10W F 2 2k or RRXAFR5Z2201 E CHP RES 1608 NON 00 21 CHIP 1608 1 10W 3 9k Q or RRXAFR5Z3901 CHP 1608 110 00 o CHIP 869 1608 1 10VV 3 9k or RRXAFR5Z3901 MEN CHIP RES 1608 1 10W F 4 7k or RRXAFR5Z4701 7771 CHIP 869 1608 1 10W 4 7k Q or RRXAFR5Z4701 E 1 CHIP RES 1606 11010010 L E 52252 82522 25222288 JE 20060712 13 L4520EL N Ref No No Description PartNo No Ref No No Description PartNo No RRXA101YF002 CHIP RES 1608 1 10W Q or RRXAZR5Z0000 CHIP RES 1608 1 10W Q or RRXAZR5Z0000 RRXA102YF002 CHIP RES 1608 1 10W or RRXAZR5Z0000 2221 RRXA223YF002 5 22223222 21225322 z s 2 s 5 s s 522252 22522222265 555222525 525 2 5 22228 20060712 13 L4520EL 00 PartNo No RRXAJR5Z0103 RRXA103YF002 RRXAJR5Z0103 RRXA103Y
34. 14 gt Waveforms to be observed at Waveform check points Shown in Schematic Diagram Input PAL Color Bar Signal with 1kHz Audio Signal R997 MAA R904 R907 9 2 L4620WF 31naow 921 NI NI NI NI 5 HOSN3S VI 09 0 53 093 V89 NIVIN L4520WI WIRING DIAGRAMS _______09 9 9 y 7 0 6 9 8101 8 0LNO GND c UND 9 IV L 9 IV SN IO 69M A9 13Nvd 6 o QNO 8 4 ONS 7 ASc MV 9 9 A AS OL TANVd a ss se a Z O LO 2 O NO ASc d LC 0 CI CV CON CV CV I3SagH INVOIN s armas 5 00501 WS didvt i EEES ARR ILNIN A9VP 9 S XL ei _ fer 1 LL A Ol 6 8 ND 9 _ AO3OWS 9 9 9 090V 9 r VI0IM V OLNO VcOLNO LINN YANAL LAL QNO 12 mje 61 vas 61 7 59 m 21 91 9310 4 er En MS S 61 19310 4 I L0310 15L 21 29 21 Im NI L4Y LL L LNadNI OL LL 0L D 8 M9L VI CI V 8 2 3W0TOA
35. 199195 18291 0576 9078 1091M0 WALSAS OL MS GldvH NILAY 108 4 9 0 vas 933234089 LLO eZ 27 INVHOVIG 7 2018 oL I 22 JIS LINN Y3NN1 V82 NIVIN INL _ _ __ ____ ___ ___ _ _ ____ ___ _ _ ____ __ _ ____ __ _ _ _ _ _ _____ __ _ mwa www wa s a s ww www s wawam wawa www warwa w r r Olanv ZZ L4520BLIF WVHSVId ANI I 1ndNI o vaNvd H31H3ANOO 79 62 YOSS3208d ANNOS 16821 TvNSIS PZ 30018 soa ol L ANDO LMANI 100 2H u344ng 0 d eolanv 3INNTOA X 018 2 2 2 10 1003 3LNN MOVT OIS o 9 WALSAS OL 31 nNW 1T3SNI ALNW dS o NI 9 4 199 0895 995 08 3 I ovr V t ez 122 o 90MVL5 MI L08XL e TIA tion s pE MI 4 7 Lolany lt eel yr dV 10821 113 1237395411914 14821 89 0M9 1945 Z08N19 20845 rds ZO8NO 4 H3IH3AN TANNVHO _ 3VI010 OL 1031385 LNdLNO G BY 4 o O
36. 2A PROCESSOR 0617 2 2 17313 se 2210 TS AVSSA2 00L6 29 i vIn es 19 ca zn _ e E 9 0 18 368 06131 24 AVSSA1 0V0033 fD 06141 23 CONTINUE 1 i uud DGND GGL2 H 0617 RESET Q6L1 LCD MAIN 2 2 oB 2 GOECTL NU E 0 x m CONTINUE VDIN2 H 4225555555 5 NU Kron MAIN 2 2 08151 15 gt D 0 D ooo o0 oO god Do a C g 0815 0V00334 9609 8 O 968 iD iD io iD iD 0 2 C DVDD33 14 22288885 5888888888 3 2 398511 252 Sass in E 1 0 13 11 01 gs CC c CC gt Q 6 5 gt O gt gt 6 _ 6 _ 6 gt O 0 gt O a o gt ND gt gt 220 gt gt gt gt gt 00 gt gt gt gt gt gt gt gt gt gt D gt x x gt gt o lt Pa 2 DVP CS ace FOP PTET TTT eT PECL PETTITTE TET oe I I i m s m 2 2 LLL Eb gt LL C U T E 8 8
37. 2SD1666R or TRANSISTOR 2SD1666S or TRANSISTOR KTD2059 Y P or TRANSISTOR KTD2059 O P TRANSISTOR 2SA1175 F or TRANSISTOR KTA1267 GR AT P or TRANSISTOR KTA 1266 GR AT P or TRANSISTOR 2SA1318 T AANP or TRANSISTOR 2SA1318 U AANP NPN TRANSISTOR KRC103M AT P or RES BUILT IN TRANSISTOR BA1F4M T TRANSISTOR 2SC2785 F or TRANSISTOR 2SC2785 H or TRANSISTOR 2SC2785 J or TRANSISTOR KTC3199 GR AT P or TRANSISTOR KTC3198 GR AT P TRANSISTOR 2SC4081 T106 TRANSISTOR 25 2120 2 or TRANSISTOR 28C2120 Y TE2 T MOS FET 2SK3798 Q TRANSISTOR 2SC2785 F or TRANSISTOR 2SC2785 H or TRANSISTOR 2SC2785 J or TRANSISTOR KTC3199 GR AT P or TRANSISTOR KTC3198 GR AT P TRANSISTOR 28C2120 O TE2 T TRANSISTOR 28C2120 Y TE2 T TRANSISTOR 2 4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 RES BUILT IN TRANSISTOR KRA103M AT P or RES BUILT IN TRANSISTOR BN1F4M T TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 28A1576A T106R TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 28A1576A T106R TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 RESISTORS PartNo No E CHIP RES 1 10W J 100 or RES CHIP 1608 1 10W J 100 Q CHIP RES 1 10W J 100 or RRXAJR5Z0101 RRXA101YF002 RRXAJR5Z0101 L4520EL Ref No No Description PartNo No Ref No Description PartNo No Esc RRXA220YF
38. 329 gt S C431 PROTECT 21 Q501 S 4327 0502 LI C501 4 I 2 E 3 ok gt eu J322 1362 BL4520F01012 1 5 ALL 5V O a 1321 2319 gt o gt 1320 EN 14 D 7 92 3 5 6M0 2 5 3361 GND 24 P ON H gt e 40 9 3315 x E J309 ARA AA Sd 15 23 5 15 102 23 gt 85669 9 i 202 J307 xl um gt E J306 gt PROTECT 1 e 5 1 4 J304 2 R419 22V 10 CNI03A 9374 20 22 10 gt Z PASS Wi CNIOIA 4302 ALL 3 3V C527 Pi 3 3V L631 273 GND 4 e I HIT ooo 0010 K a 4284 29 7286 15103 Mi f SIN lt lt gt 6860 A J276 1283 ce mi LL 3 3V Je ANULAN Bci I 4 C536 hx GAL R46 D FSI J299 a MO J297 z 15 3 5 J289 GND B 0734 ALL 3 3V 415 AF 2 D o 35704 R72 Il al b a e R722 1295 GND ee pun ame e N J212 SPiLch GND 263 d MANO TTM ALL 5V J293 3217 N e CN1701 9 MER P ON 5V2 1265 DVD H GND 3351 J268 PN WE ON EBEN 1 0669 gt L781 J254 ko J261 J260 al Sa e
39. 6 06 B8 V3 SOUND PROCESSOR gt o TC4052BF ELNF INPUT SELECT 1 8876 0 8878 8880 22 224 22K AHVSS AGND 831 1 2K 2 4 42 AUDIO L IN2 P 0N 5V 3 LOUD SPEAKER SOUND_PROCESSING E 100 100 6 VATN 4 2 C18 TU 6 19 01 TUNER UNIT 0731 0730 RAPID SW A Q 256408171060 250640811 1060 AGC OUT RAPID SW SWITCHING 19731 C730 0 SWITCHING MB 10K 0 04 FBIN INSEL MUTE TU 1 011 lt 0 25 1576 1406 CB BUFFER CONTINUE 10 MMIM 3 4 P ON 5V AL 33V 114 0712 WIRE AUDIO OUT m SIF OUT 0734 6 KRA103M AT P ND CONTINUE CHING Gran 2 NICAM RESET D730 SDA c 188400 DEA gt Mi 8 3 45205 1 Main 2 4 Schematic Diagram VIDEO SIGNAL Z AUDIO SIGNAL MAIN CBA 52 2 __ j TAN OO TR AUDIO R OUT ED 2 AUDIO L IN14 E AN C723 R796 Iria 2 2 10K 2 2 que A 1 8720 1K JK724 um AUDIO1 A IN 2 4 1 4 EN AUDIO R IN4 I E qa 07775 A702 SP AUDIO L 0UT 2 100 8749 SP AUDIO R OUT 2 39K a el 0742 C702 3701 2504081 to i ve m 11060 4 S
40. 7 Be sure this mark matches the 1 on the PCB when positioning for installation Then presolder the four corners of the flat pack IC See Fig S 1 8 Solder all pins of the flat pack IC Be sure that none of the pins have solder bridges Example Pin 1 of the Flat Pack IC is indicated by a e mark Presolder DU Pack IC 3 3 Instructions for Handling Semi conductors Electrostatic breakdown of the semi conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 MQ that is properly grounded to remove any static electricity that may be charged on the body 2 Ground for Workbench Be sure to place a conductive sheet or copper plate with proper grounding 1 on the workbench or other surface where the semi conductors are to be placed Because the static electricity charge on clothing will not escape through the body grounding band be careful to avoid contacting semi conductors with your clothing Incorrect Correct Band K Sheet or Copper Plate TVP_SN CABINET DISASSEMBLY INSTRUCTIONS 1 Disassembly Flowchart This flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain access to item s to be serviced When reassembling follow the steps in reverse order Bend route and dress the cables as they were 11 IR Sensor
41. D SW 890 159 m RAPID SW EBP T 10319 10404 2 ss 13 36 002046810 158 LL ue pes i 6942 24 Mee I E VRPD 0605 53 2940 VROD VBI 0684 TAE de E 833 56 3 VAMO DECODER dci 202 1414 8888 8937 56 0814 VIND 4 c rs C337 lt opis 80 AVDDD2 DvoD33 149 FE i CONTINUE AVSSD2 C DGND 1 LCD MAIN 2 2 VBS 49 6373 0 aysso VIDEO oon 99 SIGAN 6 ps 5 PROCESS 9001 SP MUTE OUTPUT gt n A gt in IET 9 S C JACK MUTE AVSSC2 GRL4 osr R929 56 AVDDC1 INPUT NTSC PAL GRL3 CONTROL x vonas AVSSC1 0V0033 DVDD TV Deo 3 I 5 SIGNAL 0 1 TO LCD MODULE CN311 LV5 PROCESS 0V0018 136 PROCESS 8928 56 VAPB 39 44 gt 1 sisi S CT VRMB LOCKED GRLO 25 2 99h s 6 VIN1B 08L7 32 R925 56 103417 CHROMA 1 A DDB2 i 09 66 EBD R924 56 A D DECODER 0524 ee exz acr C923 922 56 Estel 2 m os R921 56 3 E 0081 08 3 a AVSSB1 08L2 Es VI SECAM 2 OR 1 VROA DGND 0 12 VAMA DVDD18 mal SYNC 2 6 6919 1516 T DUETO 0814 AVDDA2 SYN SER SOR C 5 VIN
42. F002 RRXAJR5Z0103 RXA103YF002 RRXAJR5Z0103 RRXA103YF002 RCXAJATZO103 RXAJR5Z0103 RRXA103YF002 Ref No No Description 904 CHIP RES 1 10W J 10k Q or RES CHIP 1608 1 10W J 10k CHIP RES 1 10W J 10k Q or RES CHIP 1608 1 10W J 10k CHIP RES 1 10W J 10k Q or RES CHIP 1608 1 10W J 10k CHIP RES 1 10W J 10k Q or RES CHIP 1608 1 10W J 10k CARBON RES 1 4W J 10k Q CHIP RES 1 10W J 10k or RES CHIP 1608 1 10W J 10k MISCELLANEOUS JJ JJ JJ JJ JJ cO cO co co co gt e O 00 Ol F601 N FUSE 4A 250V PB FREE 0215004 MXP PBGZ20BAGO 1 FUSE HOLDER MSF 015 LF B110 FUSE HOLDER MSF 015 LF B110 JACK SW DIN PCB L DIN 435C or Y C JACK 1P SW DMDC1 01 021 JK722 JACK RCA PCB L RCA 112 2 04 YL JK723 JACK RCA PCB L RCA 112 2 04 WH JK724 JACK SW RCA PCB L RCA 112 03 RD JYRLO10YUQO2 JK751 JACK RGB PCB L MRC 021V 26 ABS B11 JXGL210LYO10 JK801 MINIATURE JACK PB FREE CKX 035 318AZ4 JYSLO10SNJO1 XHO1Z00LY002 XHO1Z00LY002 JYELO40YUQO2 JYELO40RP001 JXRLO10YUQ10 JXRLO10YUQ1 1 JK721 JACK SW HPEP SML PCB L PJ 350 PCB JUMPER DO 6 P7 0 PCB JUMPER DO 6 P5 0 PCB JUMPER DO 6 P5 0 PCB JUMPER 00 6 10 0 PCB JUMPER 00 6 10 0 JS603 PCB JUMPER 00 6 10 0 JS604 PCB JUMPER 00 6 10 0 45703 CHIP RES 1608 1 10VV or RES CHIP 1608 1 10W J 0 Q CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q JS707 CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q CHIP RES 1608 1 10W 0 Q
43. JW5 0T LLARKBSTU2R2 LLARKBSTU2R2 LLARKBSTU2R2 L836 L837 rir o 1 00 O CO co QQ1R2SA1576A QQWZ2SCA881F TRANSISTOR 254950 or QQS002SA950F TRANSISTOR 2SA950 Y TE2 F T or QQSY02SA950F TRANSISTOR PB FREE KTA1271 Y AT P NQSYKTA1271P TRANSISTOR 2504081 1106 Q CC10C025C4081 TRANSISTOR 2SC2785 F or QQSF02SC2785 TRANSISTOR 2SC2785 H or QQSHO 2SC2785 TRANSISTOR 2SC2785 J or QQSJO2SC2785 TRANSISTOR KTC3199 GR AT P or NQS4KTC3199P TRANSISTOR KTC3198 GR AT P NQS4KTC3198P TRANSISTOR 2SA1175 F or QQSF02SA1175 TRANSISTOR KTA1267 GR AT P or NQS1KTA1267P 2 5 Q O 20060712 21 si EL 2 1 42 C43 C46 C46 N O gt C2 N E EA 2 p p 2 E p E p gt de E Description TRANSISTOR KTA 1266 GR AT P or TRANSISTOR 2SA1318 T AANP or TRANSISTOR 2SA1318 U AANP TRANSISTOR 25 2120 2 F T or TRANSISTOR 28C2120 Y TE2 T FET MOS SMD HAT2215R01 EL E TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 25C4081 T106 Q TRANSISTOR 2SC4081 T106 FET MOS SMD HAT2215R01 EL E TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 2SC4081 T106 TRANSISTOR 2SA1175 F or TRANSISTOR KTA1267 GR AT P or TRANSISTOR KTA 1266 GR AT P or TRANSISTOR 2SA1318 T AANP or TRANSISTOR 2SA1318 U AANP NPN TRANSISTOR KRC103M AT P or RES BUILT IN TRANSISTOR BA1F4M T TRANSISTOR
44. LYTIC CAP 1 6 M or CA1C100SP085 C784 CHIP CERAMIC CAP 1608 B K O TuFISOV ELECTROLYTIC CAP TOuF 16V M 100 855 _ CHIP CERAMIC CAP F Z 047uF 16V CHD1CZ30F474 C860 ELECTROLYTIC CAP 224F 50V MH7or CEIJMAVSL2R2 ALUMINUM ELECTROLYTIC 224F50V CENIMAVSMAR2 2 1 C861 CHIP CERAMIC CAP 1608 1000pF 50V 102 C871 ELECTROLYTICCAP 104F 50V Mor CE1JMASDL100 C792 ELECTROLYTIC CAP 100uF 6 3V H7 CEOKMAVSL101 ELECTROLYTIC CAP 10uF 50V M or CA1J100SP085 1 eoe ALUMINUM ELECTROLYTIC CAP 10uF 50V M CE1JMASTM100 C872 CHIP CERAMIC CAP 1608 0 1uF 50V CHD1JK30B104 1 C873 CHIP CERAMIC CAP Z 1uF 10V CHD1AZ30F105 E C874 CHIP CERAMIC CAP Z 1u F 10V CHD1AZ30F105 C875 CHIP CERAMIC 1608 Z 0 1uF 50V CHD1JZ30F 104 C876 CHIP CERAMIC CAP 1608 B K 1000pF 50V CHD1JK30B102 E C877 CHIP CERAMIC CAP 1608 B K 1000pF 50V CHD1JK30B102 CONNECTORS CN53 08 5 5 J3PHC05JG029 EA awas CHIP CERAMIC CAP 1608 B K 1000pF 50V CHIP CERAMIC CAP 1608 B K 1000pF 50V CHIP CERAMIC CAP 1608 CH J 68pF 50V EA SWITCHING DIODE KDS160E RTK P C838 CHIP CERAMIC CAP 1608 CH J 100pF 50V CHD1JJ3CH101 5207 SWITCHING DIGDE 155408 C839 CHIP CERAMIC CAP 1608 CH J 100pF 50V CHD1JJ3CH101 E a TRIS T E A C844 CHIP CERAMIC CAP 1608 B 0 014 F 50
45. OTE The voltage for parts in hot circuit is measured using hot GND as a common terminal 6 JK1701 22 1703 gt UNE 2 e 7 9090 4 1312 g M 8 PIN1 OF 2 enp CN103A CM103 CN103A CN103A 103 e 5 EN 503 917058 ul Fere 8502 640 gt G O 1 e 5753 ro i M 758 765 O E 4 6502 4 O Scoto 79 gt BL4520F01 012 1 1362 1 C ee Ly 10107 LL 5V JS703R739 3 C743 17291 E El M Te J319 e 2 2 55 gt Exit z GNDA2 Furs e e e 5 48507 lt gro n J307 al 5 y C Ss e R419 GND 9 2 ets P 3 9 10 22 eo 3 52 28 p 3 EA a Aa C Sal J299 PE 5 HM Riis LI gt 23 gt o 5 15V 1297 e E 3 m m e e 22V XI O GND 7289 cA e m E E PA N D fs 1B HV 3 x9 AAA 243 a Es en 5 9 m 11 ente y R741 R723 15704 2 7 232179 US pane 2515111 ie gt
46. STER FILM PB FREE 0 0068uF CA2A682DTO18 100V J 100V J C613 FILM CAP P 0 0684 F 50V J or CMA1JJS00683 C663 CHIP CERAMIC CAP 1608 BK0 22uF 25V CHD1EK30B224 FILM CAP P 0 068 F 50V J or CA1J683MS029 C664 ELECTROLYTIC 330uF 6 3VMH7or CEOKMAVSL331 POLYESTER FILM PB FREE 0 068uF CA2A683DT018 2 ALUMINUM ELECTROLYTIC 330uF 6 3V 5 331 100V J H7 C614 FILM CAP P 0 0011 F 50V J CMA1JJS00102 C702 CHIP CERAMIC CAP 1608 CH J 100pF 50V CHD1JJ3CH101 FILM CAP P 0 0011 F 50V J or CA1J102MS029 C703 ELECTROLYTIC 47uF 16V M or CE1CMASDL470 POLYESTER FILM PB FREE 0 001uF 1020 018 ELECTROLYTIC 471 16 Mor CA1C470SP085 100V J 5 ALUMINUM ELECTROLYTIC 47uF 16V M CE1CMASTM470 0631A ELECTROLYTIC CAP 22004 F 25V M or CE TEMAT DL C707 CHIP CERAMIC CAP 1608 CH J 1000pF 50V CHD1JJ3CH102 C710 CHIP CERAMIC 1608 CH J 100pF 50V CHD1JJ8CH101 C632 2 1 CHIP CAP 1608 8 K 5600pF 50V CHIP CERAMIC 1608 B 5600pF 50V 08357 NS C636 C637 CHIP CERAMIC 1608 0 0474 F 50V CAA 0643 CHIP CERAMIC CAP 1608 0 22uF 25V C645 ALUMINUM ELECTROLYTIC 8305 639 5 9 1 FILM 00824 550 J or EA FILM 0082 F 50V J or gt POLYESTER FILM PB FREE 0 082uF CHIP CERAMIC CAP 1608 K 0
47. T M3X8 DISH HEAD GDJP3080 SP801 gt SPEAKER 5040710 DSD0807XQ002 SP802 PERI SPEAKER S0407F10 DSD0807XQ002 ACCESSORY X3 REMOTE CONTROL NFOO7RD 192 NFOO7RD ERCOO1 NFOO7RD 20060712 PARTS produced in EU Ref No Mark Description Part No RATING LA SCREW P TIGHT 3X12 WASHER HEAD SCREW P TIGHT M3 10 WASHERHEAD 855060 a 8155060 L 2 2 1 5 CEG 1 OWNERS MANUAL EN L4520EA 1EMN21927 OWNERS MANUAL NL L4520EA 1EMN21932 OWNERS MANUAL CS L4523RD OWNERS MANUAL AR 1452380 S S S5 5 5 5 X1 X2 d L4520CA ELECTRICAL PARTS LIST PRODUCT SAFETY NOTE Products marked with a Ref No No Description PartNo No have special characteristics important to safety Before replacing any of these components read 22201 carefully the product safety notice in this service p manual Don t degrade the safety of the product through improper servicing EL NOTES CHIP CERAMIC 1608 B 5600pF 50V 1 Parts that are not assigned part numbers are not available 2 Tolerance of Capacitors and Resistors are noted with the following symbols CHIP CERAMIC CAP 1608 B K 0 01uF 50V C23 0 25 IJ 0 596 Eu 1 CHIP CERAMIC CAP 1608 K 0 011 F 50V 2 5 10 20 N 30 Z 80 20 CHIP CERAMIC CAP 1608 B K 0 01uF 50V Comparison Chart of Models and Marks 2 71
48. U 10151 PROTECT 3 80 R175 8172 2 22 746 1007 100 ND MICRO COMPUTER 1 e p gt NU PROTECT 2 I ON 2 Or AN NU RAPID SW IN TO MAIN CBA 6 CM102 CN102B on cp 00 tH NU NU 94 67 9 ens 22 8 42 nu INSEL MUTE 84 5239 T EZA 43 nu SC VIDEO MUTE 83 1525 100 w AUDIO MUTE NU T 45 NU 89 ma 0602 47 2DVP RESET 79 8960 COMPARATOR 1 2 3 4 EP mE 660 10784 ua 150 48 s s 76 3227 29 62 R961 1 25 9 _ AUDIO MUTE 77 via 100 EE SENT EEA 5 _ 18880 E ESPECIE 39 60 10138 via 620 30 2 E R963 3 i usi gt rii Trazo 18423 2 TP 33 8965 10148 101499 147 TP130 132 18134 v 7 109 TO MAIN CBA 4 enota 1018 ESA AH 24 B pose 6967 88600 85 oe E R983 K VIDED SIGNAL CONTINUE LCD MAIN 1 2 EG 0 5 EB 0 5 LCD MODULE 2 2 EG 3 EG 4 EG 5 GND 8L0 1 EB 2 EB 3 EB 4 EB 5 GND VC0M VC0M 4 PANEL 10 4 1 E VREF 5 REF 6 4 7 VREF 8 VREF 9 GND NU i M wi 01001 ATA gt IK 41 3
49. V CHD1JK30B103 CHIP CERAMIC CAP 1608 B K 0 01 F 50V O m 1 5425 SWITCHING DIODE 15519977 007200195123 D426 SWITCHING DIODE 185400 or QDTBOMTZJ6R8 NDTBODZ6R8BS QDTBOMTZJ6R8 NDTBODZ6R8BS 001700155400 ND1ZKDS160EP 001700155400 ND1ZKDS160EP QDTBOOMTZJ18 NDTBOODZ18BS 901200155400 ND1ZKDS160EP 201700155400 ND1ZKDS160EP 901200155400 ND1ZKDS160EP 901200155400 ND1ZKDS160EP QDTBOMTZJ6R2 NDTBODZ6R2BS QDTBOOMTZJ10 21085 901200155400 ND1ZKDS160EP QDTZ001SS133 001700155400 ZENER DIODE DZ 6 8BSBT265 ZENER DIODE MTZJT 776 8B or ZENER DIODE DZ 6 8BSBT265 SWITCHING DIODE 155400 or SWITCHING DIODE KDS160E RTK P SWITCHING DIODE 155400 or SWITCHING DIODE KDS160E RTK P ZENER DIODE MTZJT 7718B or ZENER DIODE DZ 18BSBT265 SWITCHING DIODE 155400 or SWITCHING DIODE KDS160E RTK P SWITCHING DIODE 155400 or SWITCHING DIODE KDS160E RTK P SWITCHING DIODE 155400 or 12 ZENER DIODE DZ 6 2BSBT265 ZENER DIODE MTZJT 7710B or ZENER DIODE DZ 10BSBT265 SWITCHING DIODE 155400 or SWITCHING DIODE KDS160E RTK P SWITCHING DIODE 155133 I 77 SWITCHING DIODE 155400 or 001700155400 20060712 13 3 L4520EL Ref No No Description PartNo No Ref No Description PartNo No p E 2 2 2201 G EA 243 E DIODE 120030 46 MN e o G EA E L os E EA gt E 2 0 Em d 0504 EA EA 5 21 PNE _
50. ck IC from the CBA using tweezers Fig S 1 6 With Iron Wire 1 Note Using desoldering braid remove the solder from all pins of the flat pack IC When you use solder flux which is applied to all pins of the flat pack IC you can remove it easily Fig S 1 3 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 While heating the pins using a fine tip soldering iron or hot air blower pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig S 1 5 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 Release the flat pack IC from the CBA using tweezers Fig S 1 6 When using a soldering iron care must be taken to ensure that the flat pack IC is not being held by glue When the flat pack IC is removed from the CBA handle it gently because it may be damaged if force is applied Hot Air Blower Iron Soldering Iron To Solid Mounting Point Fig S 1 5 le Fine Tip d Soldering Iron Flat Pack IC Tweezers TVP SN N Installation 1 Using desoldering braid remove the solder from the foil of each pin of the flat pack IC on the CBA SO you can install a replacement flat pack IC more easily The mark on the flat pack IC indicates pin 1 See Fig S 1
51. design specifications All units should be able to approximate these Some will exceed and some may drop slightly below these specifications Limit specifications represent the absolute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifications 1 1 L4520SP 1 IMPORTANT SAFETY PRECAUTIONS Prior to shipment from the factory our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold However in order to maintain such compliance it is equally important to implement the following precautions when a set is being serviced Safety Precautions for LCD TV Circuit Before returning an instrument to the customer always make a safety check of the entire instrument including but not limited to the following items a Be sure that no built in protective devices are defective and have been defeated during servicing 1 Protective shields are provided on this chassis to protect both the technician and the customer Correctly replace all missing protective shields including any removed for servicing convenience 2 When reinstalling the chassis and or other assembly in the cabinet be sure to put back in place all protective devices including but not limited to nonmetallic control knobs insulating fishpapers adjustment and compartment covers shields and isolation resistor capacitor networks Do not operate
52. eter High Impedance One side of Power Cord Plug Prongs One side of power cord plug prongs B to RF or Antenna terminals A V Input Output Note This table is unofficial and for reference only Be sure to confirm the precise values LTVP_ISP STANDARD NOTES FOR SERVICING Circuit Board Indications 1 The output pin of the 3 pin Regulator ICs is indicated as shown Bottom View our C 2 For other ICs pin 1 and every fifth pin are indicated as shown Top View 10 The 1st pin of every male connector is indicated as shown Pin 1 C 000000 Pb Lead Free Solder Pb free mark will be found on PCBs which use Pb free solder Refer to figure For PCBs with Pb free mark be sure to use Pb free solder For PCBs without Pb free mark use standard solder D Pb free mark 3 1 How to Remove Install Flat Pack IC 1 Removal With Hot Air Flat Desoldering Machine 1 Prepare the hot air flat pack IC desoldering machine then apply hot air to the Flat Pack IC about 5 to 6 seconds Fig S 1 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 Release the flat pack IC from the CBA using tweezers Fig S 1 6
53. h improper servicing NOTE Parts that are not assigned part numbers are not available Comparison Chart of Models and Marks LCD A1506 A LCD B1506 LCD C1506 C LCD D1506 PARTS produced in CHINA Ref No No Mark Description PartNo No I FRONT CABINET L4520EA 1EM121696 ANS CONTROL PLATE L4520EA 1EM322201 REAR CABINET L4520EA 1EM021436 MEE RUUBBER FOOT L3201UB 1EM320183 LLY FUNCTION KNOB L4520EA 1EM322200 E PHOTO STAND ASSEMBLY L4520EA 1ESA13353 FRONT PLATE L4520EA 1EM322199 STAND B 15V L4520EA 1EM121703 21 STAND A 14520 1EM221419 FOOT L4520EA 1EM423649 STAND HOLDER L2500UA 1EM321428 2221 JACK HOLDER L4520EA 1EM121697 CLOTH 10X30XTO 5 B5900UA 0EM404486 BS INSULATION SHEET L4520EA 1EM423590 SPEAKER HOLDER L4520EA 1 423570 CLOTH 10X190XTO 3 LO200UA 1EM420019 10X150XT1 0 1 421092 ESE BRACKET L4520EA 1EM322218 LATCHL4520EA 1EM322221 CLIP L4520EA 1EM423647 1 SHAFT L4520EA 1EM423648 2221 HOLDER L4520EA 1 423650 221 LATCH SPRING L4520EA 1EM423652 CLN801 WIRE ASSEMBLY 2PIN 2PIN 300MM WX1L4520 003 AWG26 CLN802 WIRE ASSEMBLY 2PIN 2PIN 130MM WX1L4520 004 AWG26 L4 SCREW P TIGHT M3 10 GCJP3100 WASHERHEAD 21 SCREW S TIGHT 4 18 BIND HEAD GBHS4180 SCREW 3X10 HEAD _ GBHP3100 SCREW P TIGHT M3X8 BIND HEAD GBJP3080 hoy ASSEMBLED SCREW M3X10 1EM420633A SCREW P TIGH
54. heat sinks oxide metal film resistors fusible resistors etc C Check that replaced wires do not contact sharp edged or pointed parts H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it Also check areas surrounding repaired locations J Usecare that foreign objects screws solder droplets etc do not remain inside the set K Crimp type wire connector The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer When replacing the transformer follow these steps carefully and precisely to prevent shock hazards Replacement procedure 1 Remove the old connector by cutting the wires at a point close to the connector Important Do not re use a connector discard it 2 Strip about 15 mm of the insulation from the ends of the wires If the wires are stranded twist the strands to avoid frayed conductors 3 Align the lengths of the wires to be connected Insert the wires fully into the connector 4 Use the crimping tool to crimp the metal sleeve at the center position Be sure to crimp fully to the complete closure of the tool L When connecting or disconnecting the internal connectors first disconnect the AC plug from the AC supply outlet 2 3 ISP Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration Observe that screws parts and wi
55. ifications and the addition of items such as auxiliary audio and or video output connections might alter the safety characteristics of this receiver and create a hazard to the user Any design alterations or additions will void the manufacturer s warranty and may make you the servicer responsible for personal injury or property damage resulting therefrom LTVP ISP 4 5 Hot Chassis Warning a Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord and maybe safety serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source To confirm that the AC power plug is inserted correctly with an AC voltmeter measure between the chassis and a known earth ground If a voltage reading in excess of 1 0V is obtained remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground b Some TV receiver chassis normally have 85V AC RMS between chassis and earth ground regardless of the AC plug polarity This chassis can be safety serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source for both personnel and test equipment protection c Some TV receiver chassis have a secondary ground system in addition to the main chassis ground This secondary ground syste
56. j 0505 J262 SSS P DOWN 8 J be 9 J D702 2 215 RAPID SW Z N GND BS a gt 3 J256 4 9 29 J235 A SPDIF C9 5 LG L633 2 I E Z 1761 J250 ww D EN 1248 721 LL 5V 5 S S GFF 2 o 9 E 325 gt C782 T ALLED 5V 247153 R509 i L 7 1244 SCL a M o a S J240 29 LE Z 4 655 6 6 5 o E J234 gt 3812 PRISES 42 2 GND 5 3 8507 R522 3371 PANEL 10 8V EI 59 J228 2 651 do D701 DVD C 3 m 22722 1224 ES 21 4 0632 64 912 20V R713 5 C787 22222225 SP Lch gt Sje R524 GND J216 x 1211 E 2220 INPUT 0 WE 669 E 7 22143 INPUT 1 3197 GND jc e R670 o siz AV 7 A POSSE Jmm J208 lt oF 5 E 208 P Z 4202 GND gt SS E ALL 5V 412 671 e gt o z J229 9633 E aL 5 E 2 368 E 45 a 7 8 gl AGC 1N EHE r v 9 Y 0V gt te Nant Re NL 1 EI wo a R672 7199 gt o o FR o ata 5 Jest 25 5 gt 93 LER gt 2 7 ASN Ad 3191 gt
57. lanv x _ 90018 O o IS OL 65 1393 13S3E NVOIN VIV9 VIC O 2 708100 a WALSAS OL 109198 WYOIN QNnos 6 OLIVINOLNV 9 d V89 nN L4520BLA 7 3 iagram LCD Block D 5 r LLI LLI LLI 2 L 23 53 5 5 93 07 93 aa V V V V V 00 N O 0 93 08 ZLENO O LLI CC LLI LLI LLI CL LLI LLI S CC LLI a C ORS r gt 1 090 81 980 61 0 8O 02 990 22 090 0 2 00 C C JC U3 3 6309 DSO moon 9 1 1 AS OL THNVd 10 1 09 7 WALSAS 55390 5 G9 69 OL TVNOIS TVNOIS ML LNOX NIX NVIIS 4300930 VINOHHO a3x901 1Syna NOILVHVd3S Wd OSLN TOYLNOOD 553 0 5 LINN V8 NIVIN 921 E gt 1 91 9 WOODA 1 60 18691
58. m is not isolated from the AC power line The two ground systems are electrically separated by insulation material that must not be defeated or altered Observe original lead dress Take extra care to assure correct lead dress in the following areas a near sharp edges b near thermally hot parts be sure that leads and components do not touch thermally hot parts c the AC supply d high voltage and e antenna wiring Always inspect in all areas for pinched out of place or frayed wiring Check AC power cord for damage Components parts and or wiring that appear to have overheated or are otherwise damaged should be replaced with components parts or wiring that meet original specifications Additionally determine the cause of overheating and or damage and if necessary take corrective action to remove any potential safety hazard 2 2 Product Safety Notice Some electrical and mechanical parts have special safety related characteristics which are often not evident from visual inspection nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage wattage etc Parts that have special safety characteristics are identified by a AN on schematics and in parts lists Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock fire and or other hazards The product s safety is under review conti
59. ments are required after replacing circuit components and certain mechanical parts It is important to perform these adjustments only after all repairs and replacements have been completed Also do not attempt these adjustments unless the proper equipment is available Test Equipment Required 1 DC Voltmeter 2 Pattern Generator 3 Color Analyzer How to Set up the Service mode 1 Turn the power on Use main power on the TV unit Press STANDBY 2 7 1 and MUTE buttons on the remote control unit in that order within 5 seconds To cancel the service mode press STANDBY button on the remote control 6 1 1 Initial Setting General Enter the Service mode Set the each initial data as shown on table 1 below Table 1 Initial Data ITEM BRT PAL CNT PAL CLR R PAL CLR B PAL SHR PAL S BRT PAL S CNT PAL S CLR R PAL S CLR B PAL S SHR PAL C BRT PAL C CNT PAL C CLR R PAL C CLR B PAL C SHR PAL BRT SECAM CNT SECAM CLR R SECAM CLR B SECAM SHR SECAM S BRT SECAM S CNT SECAM S CLR R SECAM S CLR B SECAM S SHR SECAM C BRT SECAM C CNT SECAM C CLR R SECAM C CLR B SECAM C SHR SECAM BRT NTSC CNT NTSC CLR R NTSC CLR B NTSC TNT NTSC SHR NTSC S BRT NTSC S CNT NTSC S CLR R NTSC S CLR B NTSC S TNT NTSC S SHR NTSC NO O 00 E CO CO 4 4 4 al N O O 00 5 NJ on the remote con
60. ne I 93M0 OL 8 6 19310 4 gt gt 4 423 689 A NM CENE e WvH ovid 2018 lt De rdaY LH NTYOY AS lt gt A8 u V20LM 920LM 09 C6 1 L 6 2 HOSN3S HI T N H3MOd HOSN3S V ASHIV O 7 L E 25 19599 4 67 vad HO LIMS 1 SSIDOUd TVNDIS 13538 097 3180 NR 10631 6912 i INVHOVIG X 0 19 aol OL AS IV IE 550308 5 085940 91 1 OHOIN BERE 1813 s emo 8 24413938 9 00 NOLLO3NNOO ON IF Video Block Diagram 8 0 eR LSIAD IV95VI0 A OACIA S 01 sos 6 8 9 9 090V __ _ nn w w w w w w w w w ns NI O3GIA 5 03C0IV VEOLNO En 1907198 AND L LNdNI INVHOVIO 49019 oianv lt 1 1 WALSAS 1 0 030IV OL ANDOLNaNI 2 85 OL MS GldvH 8 7 MS S 7 0 E MS MO1S 31nWoOvr o s L 7 900
61. nuously and new instructions are issued whenever appropriate Prior to shipment from the factory our products are strictly inspected to confirm they comply with the recognized product safety and electrical codes of the countries in which they are to be sold However in order to maintain such compliance it is equally important to implement the following precautions when a set is being serviced LTVP ISP Precautions during Servicing A Parts identified by the symbol are critical for M When installing parts or assembling the cabinet safety parts be sure to use the proper screws and Replace only with part number specified tighten certainly B In addition to safety other parts and assemblies are specified for conformance with regulations applying to spurious radiation These must also be replaced only with specified replacements Examples RF converters RF cables noise blocking capacitors and noise blocking filters etc C Use specified internal wiring Note especially 1 Wires covered with PVC tubing 2 Double insulated wires 3 High voltage leads D Use specified insulating materials for hazardous live parts Note especially 1 Insulation Tape 2 PVC tubing 3 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before soldering F Observe that the wires do not contact heat producing parts
62. o RES CHIP 1608 1 10W J 10k RRXA103YF002 TACT SWITCH KSWOS22A TACT SWITCH KSMC622A 55 0101 1 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 ss 55 IR SENSOR CBA Description IR SENSOR CBA Consists of the following CAPACITORS C53 ELECTROLYTIC CAP 474 F 10V M or CE1AMASDL470 ELECTROLYTIC CAP 47uF 10V M or CA1A470SP085 DOD Y _ D51 LED L 53HT NP4Z000L53HT PartNo No ma ma _ me _ me _ JS52 CHIP RES 1608 1 10W 0 or RRXAZR5Z0000 RES CHIP 1608 1 10W J 0 RRXAO00YF002 REMOCON RECEIVE UNIT KSM 602SR2E 2 USESJRSKK045 REMOCON RESEVER MIM OBM8DKL C USESJRSUNTO7 L4520EL PARTS produced in EU Ref No No Mark Description PartNo No MISCELLANEOUS AC601 AC CORD CEE 1800MM BLACK WAE0182LW004 AC601 B 1 AC CORD BS 1800MM BLACK WABO182LWO17 TUNER UNIT BS TMFE6 301A UTUNPLGALO18 TUNER UNIT BS TMFE6 401A UTUNPSGALO11 20060712 13 10 L4520EL LCD A1506 LCD B1506 LCD C 1506 LCD D1506 L4520EA 21BB 22FC 23RD 2006 08 04
63. or RES CHIP 1608 1 10W J 0 Q JS709 CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q JS711 CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q CHIP RES 1608 1 10W 0 Q or RES CHIP 1608 1 10W J 0 Q PCB JUMPER 00 6 15 0 SCREW B TIGHT D3X8 BIND HEAD or SURGE ABSORBER 470V 10PER or VARISTOR 10D 471K SVR TRANS INVERTER ETJV27ZJ22AC TRANS INVERTER ETJV27ZJ22AC TRANS POWER 6740 EYELET TYPE D 1 EYELET TYPE D 1 XTAL 18 432MHz JYSLO10YUQOS3 JS381 JW7 0T JS426 JS466 JS601 JS602 JW10 0T JW10 0T JW10 0T JW10 0T RRXAZR5Z0000 0 02 RXAZR5Z0000 2 RRXAZR5Z0000 0 02 RXAZR5Z0000 2 RXAZR5Z0000 2 RXAZR5Z0000 0 02 RRXAZR5Z0000 2 RXAZR5Z0000 RRXA000YF002 JW15 0T GBJB3080 NVQZ10D471KB NVQZVR10D471 2 5002 2 5002 LTT3PEOKTO12 OVM406868 OVM406868 FXD186LLN001 zz 2 2 2 2 2 2 8 5 3 5 5 O de O JS706 JS708 JS710 JS810 JS813 16 TA T401 N T402 N T601A TM601 TM602 X831 gt T g gm 91 20060712 13 9 Description FUNCTION CBA Consists of the following CAPACITOR C33 CERAMIC CAP AX Z 0 01uF 25V CCA1EZTFZ103 RES CHIP 1608 VON TIKO PartNo N
64. rdering The correct part number is shown in the parts list and may be slightly different or amended since the drawings were prepared 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Voltage indications on the schematics are as shown below Plug the TV power cord into a standard AC outlet gt e Unit Volt 5 0 X 5 0 Power on mode 7 Voltage Indicates that the voltage is not consistent here 5 How to read converged lines 1 D3 L Distinction Area Line Number 1 to 3 digits Examples 1 1 03 means that line number 1 goes to the line number 1 of the area D3 2 1 1 means that line number 1 goes to the line number 1 of the area 81 A B C D MEE AREA 03 AREA 81 6 Test Point Information CI Indicates a test point with a jumper wire across a hole in the PCB Used to indicate a test point with a component lead on foil side e Used to indicate a test point with no test pin Used to indicate a test point with a test pin 8 2 LCAP SC Main 1 4 Schematic Diagram VIDEO SIGNAL lt AUDIO SIGNAL AUDIO R IN1 47 1 MAIN 2 4 ALT5V 4 0854 107164 R835 6 BK S ME Casi L 1 C850 C855 gt 3 3750V 0 1 10 16V 0 47 6 1 ICB31 MSP3417
65. res have been returned to original posi tions Afterwards perform the following tests and con firm the specified values in order to verify compliance with safety standards 1 Clearance Distance When replacing primary circuit components confirm specified clearance distance d and d between sol dered terminals and between terminals and surround ing metallic parts See Fig 1 Table 1 Ratings for selected area AC Line Voltage Clearance Distance d d gt 3mm d SY gt 6 mm d Note This table is unofficial and for reference only Be sure to confirm the precise values 2 Leakage Current Test Confirm the specified or lower leakage current be tween B earth ground power cord plug prongs and externally exposed accessible parts RF terminals an tenna terminals video and audio input and output ter minals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z between B earth ground power cord plug prongs and exposed accessible parts Use an AC voltmeter to measure across both terminals of load 7 See Fig 2 and following table Table 2 Leakage current ratings for selected areas AC Line Voltage Load Z 2kQ RES Connected in parallel 50kQ RES Connected in parallel 230 V Leakage Current I lt 0 7 AC Peak ix0 7mA AC Peak Chassis or Secondary Conductor Primary Circuit y 9 d ATA O Exposed Accessible Part AC Voltm
66. s manufactured to provide many years of useful life Occasionally a few non active pixels may appear as a tiny spec of color This is not to be considered a defect in the LCD screen SPECIFICATIONS lt TUNER gt ANT Input 80 dBuV Video PAL 87 5 Audio 30 kHz dev 1 kHz Sin 400Hz 3096 modulation Condition Ui Nominal Limit Description Picture PAL BG I DK SECAM L SECAM L Sound PAL BG SECAM L SECAM L 2 Video S N White 50 CH 3 3 Audio S N Output Level 500mV lt LCD PANEL gt 1 Intermediate Freq Description Nominal al Limit 1 Number of Pixels Horizontal pixels 640 x 3 Vertical pixels 480 2 Brightness cd m 450 3 Response Time msec 16 4 Support Color 16mil 8bit 5 Viewing Angle Horizontal 85 to 85 Vertical 85 to 70 lt VIDEO gt Description Condition Unit Nomina Limit 1 Over Scan Horizontal 10 5 Vertical 10 5 2 Color Temperature 0 29 0 03 0 30 0 03 3 Resolution Horizontal lt 250 Vertical lt 300 lt AUDIO gt All items are measured across 89 load at speaker output terminal with L P F Description Condition Nomina Limit 1 Audio Output Power 10 THD Lch Rch 0 95 0 95 0 75 0 75 2 Audio Distortion 500mW Lch Rch 0 6 0 6 4 3 Audio Freq Response 6dB 50 to 12K 6 8 50 to 12K 4 Audio S N VIDEO 1 43 40 VIDEO 2 55 40 Note Nominal specifications represent the
67. this instrument or permit it to be operated without all protective devices correctly installed and functioning Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage b Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage Such openings include but are not limited to 1 spacing between the LCD module and the cabinet mask 2 excessively wide cabinet ventilation slots and 3 an improperly fitted and or incorrectly secured cabinet back cover c Antenna Cold Check With the instrument AC plug removed from any AC source connect an electrical jumper across the two AC plug prongs Place the instrument AC switch in the on position Connect one lead of an onmmeter to the AC plug prongs tied together and touch the other onmmeter lead in turn to each tuner antenna input exposed terminal screw if applicable to the coaxial connector II the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrument is returned to the customer Repeat this test with the instrument AC switch in the off position d Leakage Current Hot Check With the instrument completely reassembled plug the AC line cord directly into a 230 V AC outlet Do not use an isolation transformer during this test Use a leakage current tester or
68. trol MENU gt 7 MENU gt 8 DATA VALUE 140 Z 02 5 65 A NO O 00 O A mob A P AB O O SI 7 ok NO 00 7 131 143 L4520EA BUTTON 2 Flicker Adjustment VALUE 1 Enter the Service mode See page 6 1 CBRTINTSC 128 2 Press 2 button on the remote control unit 128 The following screen appears C CNT NTSC C CLR R NTSC MEN C CLR B NTSC _ C TNT NTSC VCOM C SHR NTSC 128 0 o o T If Flicker Adjustment is not fit the screen becomes VCOM 128 I LAST POWER OFF FLASH Go and Off SYSTEM VOL w 4 Press CH a w buttons on the remote control ASPECT OFF unit so that flash stops OFF RUSSIAN 1 PAL BG LCD A1506 PAL I LCD B1506 SECAM L LCD C1506 PAL BG DK LCD D1506 6 2 L4520EA The following adjustment normally are not attempted in the field Only when replacing the LCD Panel then adjust as a preparation 3 White Balance Adjustment Purpose To mix red green and blue beams correctly for pure white Symptom of Misadjustment White becomes bluish or reddish Test Point Adj Point Mode Input RF AV2 CVBS White Purity VOL V C D S 1 APL 80 buttons AV1 RGB or C D S 2 APL 4096 Pattern Generator x

LCD-D1506 -- Service Manual

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