LCD TV SERVICE MANUAL
Contents
1. Tum 30V COMP2_Y THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC ANALOG 1 3V_HDMI 5V HOMI 1 gt HDMI B gt HDMI G 1 BV HDMI 12300 CM2024 00TR OPTION m HDMI HS HDMI DE MAIN TUNE JUDCA SCL 50 JUDCH SCL JDDCB SDA SDA LS 45V HOMI i C HPOCTRL 5V HOMI 4 HDMI VS 3 3V HDMI 00 0 3 3V HOMI A370 4 7K TUAOO 801 R371 47K 1 BV HDMI gt l AFT WOO3D 2012 900 2 1 4 CLKA m 3845045 zt L304 ACM H 2P 1 4 NDS CND TMDS DoF C404 2 407 0405 HOS ENDT CN400 10uF 25038755 NOSeDIF A02 0915 101 L HH 1M3218 501 gt 500 ohm 988 16V V SUPPLY 5VST 0051 502. m SMW250 03 10800 7 L800 1896 P_12V HH 1M3216 501 HH 1M32 167501 4 AN p The LC filter should be placed close to the nutputs IC808 AZ1117H 1 1 50D0 onm 500 ahm bene HH 1M32 18 501 INPUT ADJ GND CDU 3 1a 1 16V 2 1 ad OUTPUT u Chanese Hotel 18505WR 08A00 L 35088758 AGND amp HGND 502 L608 uN 25038755 HH AN LEO 1 233216750 1 c600 6800pF iov 3 9603 2k VARIABLE AUDIO OUT D JK 600 REO a 25039795 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC 5 En 07 AMP MUTE 5988 P 4 SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES 200 07 SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM FILAE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS E
3. RXO4 AXO RX44 RX4 2 RX2 AX3 RX4 RX4 AXCLK RXCLK g 2 ug SB amp 58 B IDE 2 AR526 D 55 82111 gt J 85 TT n 6 A m 3 5 amp BA a 2 M am Bails a v gt gt e gt gt 2 gt gt gt 2 g s ts AN md cmm SS ETE 5 9 4 4 4 63 wo 58191212182 2 2222258 1212228 mouseogarunuuosm D m ID iD yaa on HIST 3535 MET YG Loss NORMAL BEE 39 CN Fr J Age H gt u 2 md m rw I 1 1 O z et LTE EEE tn HEH iad d gt S05 gt gt gt Pe m Hr ZZ 2 E P gt m gt 3VST_DVCTP gt DIMMINGL gt scL cPIO gt SDA GPIG gt INVERT_ON VAVS_ON B531AAA 00 B532 A AA LC BE33AAAALK DSORA 405 05064 107 08001 106 05068 105 03063 DSOR4 114 3101 1 RAM 46 DVS 47 DULK DRI7 ORI
4. DC1RO19WDH 0303 C305 JK300 oer OPT AVDD33 6 OPTION OPTION HDMIO CLKN HDMIO CLKP 10400 01 40 LON Ji SSMEN15FU NDA C405 IBN DVDD18 B 0 DVS5 14 vos vos DVSS_13 DVDU33 6 VD7 1 COMMERCAL SOURCE2 010 SDA GPIO voit DVDD18 7 Dvss_12 O 08114 vo13 V014 RCIAL 0 vD15 DVDD33 5 VD CLK DVSS_11 VD16 047 vD18 v019 DVSS 10 DVDD18 5 120 0hm 1 0404 vo22 5328 5 15045 vo23 DVDD33 4 B AVDD33 7 HOMIO DON HOMIO DOP AVSS 7 HDMIO_DAN DRI O 71 SOURCE 1 DRAIN ony SCL GPIO SECAM L COMMERCAL DET 0403 23638755 6425 106 5V_HDMI_2 06110 7 BEBI5ERERESHHN HDMIO_D2N HDMIO D2P IC301 AVSS_9 1 0 MPO OPTION AVOD33_10 ASVDA 11 08110 7 _ HDMI1 CLKP JUDCB SUA am AVDD33 12 HOMI 4 DON HDMI 1 D0P AVSS_12 0033 HDMI CLK gt ACM2012 800H 2P 1 4 HOMI4_D4N HDMI 1 D1P AVSS_13 AVD
5. SCL_LS SDA_LS 2 5V_AVD 3 3V AVDRLL SW RESET I 3 3V VDDE ESSENTIAL E CHITIC B HE AND ELECTRICAL SHOCK 2 5V_VDD PIP DECODER 5 SCALER 3VST S a K 3VST AVCTP LCD AAA NW AAA r lt d 3 3VST_DVCTP gt sg aLvos4 LVUSH 1P 153 N03 3 vgs 3 LVUSB 2N LVUSB 2P VSUP3 3LVOS3 LVOSB_CLKN LVOSB CLKP 147 GNO3 a vgs_2 LVOSB aN LVOSA_3P LVDSB 4N 1 155 154 152 151 150 148 14B 146 145 N iD Sca ID SC1 ID KEY1 gt 100 Mim FAN CTAL MDDULE DET T MUTE LINE E TER 5580 9575 8 220 Ka Nm HS i PC B VIN24 PC_6C gt VIN2D PC R 5 1 SC B COMP Pb C505 SC G COMP_Y SC_R COMP_Pr C508 VIN13 HOMI_G VIN42 HDMI R VIN11 SIDE CVBS 1 VINO SIDE C VINB SIDE Y VINZ ND Sc2_v E 6 aci vi 515 VIN3 N INA TV MAIN EE lt SUP PIP_V ypur2 SV 3 3VST_AVCT vo BE 1 AAZLOO VnLIT4 180 254 15045 0502 MNT_VOUT CH E 25415045 0504 IN SY BOL MARK OF THIS
6. 797 pq GE RINA CER AAA 1 a 0 VDDE 3 1036 E 3V_VDDE 0 f c VSSE COMP2_Pr C1037 gt VDI 0 7 SC1 FB FED aan 181 vols 1001 3 VD 9 AZ21117H 2 1 lt eo YBOUT 10 Ee 44 E a MUX3 VD 11 AR1001 CNSOO T 0 tu DI1 a lt 5 ur UXe v55 4 1 15W xL un tur UX 4 1 2 KAA VDI 0 a icono ue SU gor R1008 a A D Qe 2 VOLIS M A BEER YES xut C1010 L 10u Femme O 10 100 0 AUF iev T 16V 1 3216 501 E E ee le ei lt vised gt 2 5V VDD 4 21963 gt 2 5V AVD 5 mM 16V T ev i3 513 lt en Se a HE N SY BOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES at s PECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION E ILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS le T EAS ARK OF THIS 5 DIAGRAM INCO SSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED 208 H IH ma CRITICAL COMPONENTS IN N SYMBOL MARK OF THE SCHEMETIC H HEN SERVICI HAT ONLY MANUFATU TED PARTS BE COMPONENTS IN 1 OL MARK OF
7. 4 SPEAKER NONEU NONEU NONEU ENS 4 NDNEU scs 4 _SHUTDOWNZ 51 ROUTN 1 l a Ol Ol N 6824 IC601 650 TPA3107D2 d ax 5 HGND 7 625 K 5625 K 2 RI 2 he 7 64200 R528 3K ADDR 9A C621 00 C622 C507 v E 4 46V 4 7uF e 14 Si 166 x HB 1S2012 121JT 1 PC_RIN 2 18998 L5 1515 ev 1062 T 9627 Ic801 MR2355DN 2a SMN250 04 CN601 OTHERS 14 5v 5V TUL480mA 4 5V BUFF SIDE R 2 PANEL 800mA LBD1 P 6V HH 1M3216 501 4 10802 zi 500 ahm AZ10858 3 3TR E4 807 ee cm 9 16 501 0 047 818 2 1887 5 BE AV AUDID H LOUT2 LOUTN 4 5 SAV AUDID U Short Cirtuit detect fault output FAULT hagh short carcuat detected FAULT 10w normal operation CN801 SMW250 10 Treaur 18V ato fi Br 0 O1uF MBRS340 DB03 CB43 0 4uF Table 4 Gain Setting 1 C542 54 a C646 47uF
8. BC 52 DO 1E 20 BB 28 55 40 4 0000 21 00 00 1E 0019020 40 31 20 0 40 55 00 00 C4 21 00 00 18 01 10 100 72 51 00 1E 20 6E 28 OOFO 55 00 21 00 00 00 100 00 00 00 100 00 14 gt Detail EDID Options are below a b d Model Analog H2 XGA XGA RGB B57 ANA Analog Digital nen pE 00 FF FF FF FF FF FF 00 Herds 00 FF FF FF FF FF FF OO Wander Product ID Freud 10 Name DEC HEX EDID table Handsome D 67 wes Week re 30113 A 75A1 A175 Product 07 07 or 0T 01 0 1007 fm 30114 0 75A2 A275 en MILAN Version EDID Version 01 00 Verior 03 D Page a 5575 ma wu gri Paanan Lola Charscienstses Coler Charachernhies r3 AT 54 42 26 OF 48 Charsctenibes 31 AT 47 AA E itabkikesd g FE 5 FF FE Timing E Garda Timang GI 5E 4 ma 7r 40 71 aF 50818 31 45 61 59 40 71 81 20 B1 80 Tirang Detaded Timing Di sc pi
9. Optimum Color Temp Normal 2 Changing to the av mode by pushing the input or front av key 3 Display the internal pattern of the VCT Pro IC by pushing the IN START 4 Stick sensor to center of the screen and select each items Red Green Blue Gain and Offset using A V key on R C 5 Adjust R Gain B Gain using 4 key on R C 6 Adjust it until color coordination becomes as below Initially R G B gain and R G B offset values are fixed as below Red Gain 80 Green Gain 80 Blue Gain 80 Hed Offset 80 Green Offset 80 Blue Offset 80 Target Value Picture Mode Standard ZA TA Optimum MA Color Temp Normal Normal 9300K x 0 283 0 003 0 298 0 003 Luminance Y AV upper 150 cd m Typ 350 cd m z gt Reference Value Automatically fixed Cool 11000K 0 274 0 003 y 0 286 0 003 Warm 7200K x 0 303 0 003 y 0 319 0 003 Internal pattern of VCT PRO Pattern for Adjustment of White Balance 7 When adjustment is completed Exit adjustment mode using EXIT key on R C 6 4 Input the Shipping Option Data 1 Push the ADJ key in a Adjust Remote control 2 Input the Option Number that was specified in the BOM into the Shipping area 3 The work is finished Push Bl Key 7 Default Value in Adjustment mode Default values maybe modified the module condition 7 1 White Balance White Bdance RED Gain Offset Green Off
10. De cB feq ES Seal l LEID DS Plea es l a2 2 8 Click OK button the edit window 4 Execute Download vi2c program in PC then a main 9 Under Downloading process widow will be opened EB Progress Loadiog up to bytes 15 2819 Coe Weed Ins ewe Window nep Riera BamnRead C On fF sw Eon CDooum ents Aid en ifs ment Tee Dat Go pol Boca Version n 10 If download is failed for example No acknowledge Double click from slave Execute download again from 1 2 Download method 2 AV Plate Ass y 5 Double click the blue box and confirm Bootloader Version as 42 download vi2c isualI2C3 File Edit Watch Inits Views Window Help Add Watch Remove AutoRead On Off gt Pini C Documents and Settings Administrator Desktopinstallivetp_dowrn bootloader bat 2 Bootloader Version Erase Flash Erase Flash _ O EE ee oe AN Load Hex gt Flash 1 Push S W ON connect SCL to GND using switch at Jig and connect the download jig to D sub jack 6 Click the Erase Flash button download vi2c Yisuall2C3 loj x File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off 4 bini D a C Documents and SettingstAdministrator Des
11. FAN_ALRAM EN Toni Ti _0 BABA AK lt 7 AGC FB VSUPS SFI BV RV gt ne ERE Add to remove the 1 8V ripple noise ND 3VST DVCTP Er 1 AV 1 4 FS gt VSUP 1 8016 uuu ____ sionn gar aur csse al n 8538 AA AK Bi N KOUT PI u T _ 5510 TAL QLIT 5 1 192216750047 1 25mA antenne IN gs on gt HH ND DM 3VST DVCTR 23 DNCTP ND DB 0 1 E 3 2 VSURS OSIF 5 7 x x 0 L512 HH 1M3216 501 5 VSUPB OAU I UF gt 500 onm 15 Zur n 999 a pm T 12501 al x 4 1031 27 A T b 3 DA m g 2 DH m m C 18CL GPIO 27 HOMI ELK lt 1 SDA GPIO HOMI DE vs lt 3 3VST_DVCTP SCL GPIO SDA GPIO lt VoL Ee OP IN JTAG OPTION GIL G O3 S3T2 Pi 1 SCL YFOW254 145 e 3 BND LG Electronics Inc Mar 2007 P NO MFL36696905 Printed in Korea
12. Servicing Precautions 1 Always unplug the receiver AC power cord from the AC power source before a Removing or reinstalling any component circuit board module or any other receiver assembly b Disconnecting or reconnecting any receiver electrical plug or other electrical connection c Connecting a test substitute in parallel with an electrolytic capacitor in the receiver CAUTION A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard 2 Test high voltage only by measuring it with an appropriate high voltage meter or other voltage measuring device DVM FETVOM etc equipped with a suitable high voltage probe Do not test high voltage by drawing an arc 3 Do not spray chemicals on or near this receiver or any of its assemblies 4 Unless specified otherwise in this service manual clean electrical contacts only by applying the following mixture to the contacts with a pipe cleaner cotton tipped stick or comparable non abrasive applicator 10 by volume Acetone and 90 by volume isopropyl alcohol 9026 9996 strength CAUTION This is a flammable mixture Unless specified otherwise in this service manual lubrication of contacts in not required 5 Do not defeat any plug socket B voltage interlocks with which receivers covered by this service manual might be equipped 6 Do not apply AC power to this instrument and or any of its electrical assemblies unless al
13. normal FS2 FS3 on the Yes 15 Z Board Site Is appropriate Soma fuse FS1 FS2 on Output voltage norma after removing the P100 110 200 210 connector of 15 the X Board normal 18 Replace the Y Board the Z Board After removing the P100 110 and the output voltage is normal Replace the Right X B D voltage is normal Replace the Left X B D 3 No Raster 1 Symptom 1 No OSD or image are displayed on the screen 2 The front LED remains green 2 Follow check Start Check Does minute discharge at Module 15 the inverter VaVs on Check the PDP Module Reconnect the link cable in P803 Plasma Yes Is there a fault with the link cable Yes Is the output for the IC500 normal gt Replace the VSC video output of the Tuner normal Check input voltage normal Check 15 the LVDS Cable connected Is output the normal gt Low High voltage except for the Stand by 5V Yes 15 the 2 communication normal Check 9 Pin10 Check the Tuner Replace the Power board 5 In the case of an unusual display in rear mode Is video input of the A V jack normal Check R172 Yes Sam as Block A 6 In the case of an unusual display in Side AV mode Is the video input of the A V j
14. the AC power line Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks It will also protect the receiver and it s components from being damaged by accidental shorts of the circuitry that may be inadvertently introduced during the service operation If any fuse or Fusible Resistor in this TV receiver is blown replace it with the specified When replacing a high wattage resistor Oxide Metal Film Resistor over 1W keep the resistor 10mm away from PCB Keep wires away from high voltage or high temperature parts Before returning the receiver to the customer always perform an AC leakage current check on the exposed metallic parts of the cabinet such as antennas terminals etc to be sure the set is safe to operate without damage of electrical shock Leakage Current Cold Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return path to the chassis the measured resistance should be between 1MQ and 5 2MQ When the exposed metal has no return path to the chassis the reading must be infinite An other abn
15. 2 X 0223 BR 10204 ICL3232CBNZ PDP POP PDP A02 0815 101 RO R IN D108 9302 2000020021 TV VOUT IN MNT VOUT 9400 549 C116 80 x GND 220uF 16 lt YL VZIN DN 0920 CZU Ol 02 ZU 1 DSUB SDA x 0209 Peo NORMAL R220 1 9 TV ROUT T AS232C AXD 0212 CDS3C30GTH OPTION XXPUO 27 2 0 CDS3C308TH 0243 OPTION 1 As232c_TxD TRUVEO Q 00 OUXDU c202 OPT 8855 0105 25038755 EU 0107 9 e 7 5 0199 8 CDS3C30GTH TV LOUT T 848 En 71 gt RCA2 VEND aii TV LOUT EU 104 EU 75NONEU 0 DSUB SCL 9511 AZ 2812 27 0211 Dd m m CDS3C30GTH oom oc IC202 74 2538 MNT ROUT T MC 74HCAOG6BA PC AU C 0105 8105 3 MNT ROUT p JK204 CD53C30GTI 75 PEJO24701 EU SDA_HW E SPRING a 1c200 25638755 CAT24W F COBJ TE43 OSUB SDA T TERMINAL4 MNT LOUT_T Ras DSUB SQL cy CONTROE D B_TER
16. 56K C 612K Change File Save File NVM Update Address 0200000000 2 Help Num of Bytes 1 n TUE Update from Exit 4 4 Tool Option Area Option Change Before PCB check have to change the Tool option and Area option Option values are below If on changed the option the input menu can differ model spec The input methods are same as other chassises Use adj Key on the Adjust Remote control mn fa m Area Option Depend on PR 4 5 Color carrier Adjustment Inspection process 1 Tuning the RF signal ZA TA PAL Philips Pattern with color Bar MA NTSC Digital Pattern with color Bar 2 push the adj key in the adjustment remote control 5 the Extended Display Identification Data DDC Data Channel download Caution Use the proper signal cable for EDID Download Never connect HDMI amp D SUB Cable at the same time Use the proper cables below for EDID Writing For RGB EDID For HDMI EDID EDID Data Data Manufacturer ID 1E6D Version 01 03 lt EDID DATA Analog Set 128bytes gt Revision 00 01 02 103 04 05 06 07 08 09 OA OD OE OF 0000 00 FF 00 1 601 0010 01 03 08 46 27 78 09
17. 57 49 9C 25 0020 11 49 4B 1 08 00 31 40 01 01 01 01 45 40 01 01 0030 61 40 01 01 01 01 1B 21 50 51 00 30 48 88 0040 35 00 88 21 00 00 1C 4 00 80 51 00 30 0050 40 80 37 0 88 21 00 00 18 00 00 00 00 0060 32 09 00 20 20 20 20 20 20 0070 00 lt EDID DATA HDMI Set 256bytes gt 00 01 02 03 04 105 06 07 108 109 OD OE OF 0000 00 FF FF FF FF FF FF 00 6 gt 0010 01 3 80 34 196 30 7 54 42 AA 26 0020 OF 48 4 00 100 00 01 01 01 101 01 01 101 01 01 101 0030 01 101 01 101 101 01 8C 0A 00 8A 20 2D 10 10 0040 96 QU C4 8 21 00 00 18 d 0050 d 00 00 00 FD 00 2D 0060 41 19 32 8 100 0A 20 20 20 20 20 20 00 00 00 100 0070 00 00 00 00 oo 100 100 00 100 01 0080 02 03 172 23 09 07 02 48 10 1F 07 16 81 103 05 0090 14 13 12 04 83 101 00 100 65 103 0 100 110 100 101 1D 00A0 80 18 fl 15118 20 58 2 25 00 CA SE 21 00 00 SE 00BO 01 110 180 00 72 1 16 20 10 2 25 80 4 21 00 00CO 00 9E 01 1D 00
18. ACT scia c DE f N TV ROUT B 7 MNT ROUT R112 M 9888 20 11 Lane C120 TN RD 1 2 COMP2_L COMP 1_Pb EU EU EU 0109 RIN 25038758 40uF J 100086 285 COMP2_Pb choo WH C LUG L gt c201 7 0110 1000pF WH C LUG L y PER 25038755 INHIIP CAN 053 05 gt 053 058 L NONEU IROIC LUG L COMP2 Pr C Eu RDIC LUS L NIV RO14P CAN1 RD 1 1 5 THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES D _ 20003701 SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION k JK400 FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS JK 104 LIE 1 bugie ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Lee eei d GNI CONTACT THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC v Le BN 4 GN 4P CAN gt 0204 n 8 75 NONEU WH 1P CAN SC P COMP Pr 2 0216 NONEU COMP 1_Pb BLIG LuG L gt COMP2 Pb L101 fs GND Bohn
19. Carefully remove the transistor from the heat sink of the circuit board 4 Insert new transistor in the circuit board 5 Solder each transistor lead and clip off excess lead 6 Replace heat sink Diode Removal Replacement 1 Remove defective diode by clipping its leads as close as possible to diode body 2 Bend the two remaining leads perpendicular y to the circuit board 3 Observing diode polarity wrap each lead of the new diode around the corresponding lead on the circuit board 4 Securely crimp each connection and solder it 5 Inspect on the circuit board copper side the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the replaced component and adjacent components and the circuit board to prevent excessive component temperatures Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board causing the foil to separate from or lift off the board The following guidelines and procedures should be followed whenever this condition is encountered At IC Connections T
20. D33 14 HDMI 1 D2N HDMI1 D2P AVSS_14 101 15 gt Tv vour DEVAD CI KAAR Q411 25415045 3 3V SUPPLY 3 3V_HDMI N SUPPLY gt svsT DC ARO 19WDH C306 C304 301 OPTION OPTION 9400 i 25 38755 DMI T 0 027 C308 C310 C408 R410 1BpF 180F 1K E gt 1K 1 027uF AOV j 5V HOMI 1 5VST 5V HOMI 2 5VST 10304 1050 1 8 AT2ACO2EN 105U 1 8 Dana KDS184 comp_sw I HDMI LRCH HDMI LRCK HDMI Sck TI 247 Contains 1 H _ THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES En JAGRAM ENDE DE 1 DDCA SDA DDCB SDA SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM NPUT als ECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIA EEC FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS LE ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR PU THE CRITICAL COMPONENTS IN THE N SYMBOL
21. G 51 DRIS PWM SIGNAL TINVERT PUSH PULL SWITCH I25 DEL WS 4 T2S_DEL_CL 43 VSUP3 3RAM I25 DEL IN 42 eng 3l 3 9 Bee rv 0505 m OPTION Bes R570 e DIMMING L DIMMING_Vbr eC 9505 Bese 25638755 DPTIDN 2 gt 1 21 1 3 351 PI 3 3VST AVCTP 4 ur 3 DER EM E OCDE 75 10 Tu 0 10 To 10 pe gt 7 6353 cosa a d c 0508 54 an EFANTS Venet E ayat 13215 501 3 3VST_DVCTP d Fa gt SECAM L COMMERCAL DET lt dam OF 1ur aur o uF urto Fto dur fo 0 iue ac 1 gt et asoc W 2543 AAA K 860 0258 S J seat eae p p 3 30ST DVCTP GNO g NSDH R544 ANAL OSD R54 K S 508 gt SW_RESET 216 00 7 55 100 AS232C AXD 1 330mA p pr gt RS554AAA 10D gt RS232C_TXD P2_2 555 pa 1 U 100 lt EYE
22. MARK OF THE SCHEMETIC HE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC Joss A310 SR311L T O Amplifier D 12803 9800 d jr AZ1085S 3 1 2SC3875S 8 25 14 7 INPUT fa 2 OUTPUT 1802 1 HH 1H3216 500JT 50 ohm 0803 B AA 2838798 RE ON oir BF The LC filter should be placed close to the outputs 7 0549 1 100470 O4uF 20 5 CSW BESET 2 20884 55290 5 CAMP MUTE SAM2333 POP 200 e LD4086DT48TR dud SV MNT DIMMING SEL 9801 INPUT 1 LECT 2338758 PDP 4 7K LCD 0 Legos i ii E 0804 en 8 2 INVERT ON VAVS ON cer LCD 1 DIMMING Vbr 50415 4 UR errance F 22uF 1 Auf vs 8682 69 ESI 1548 4 gt iets es LAD 1 9503 AB49 1 Gce2_Lin 91 4 SPEAKER RED4 1 Cem ET m TEE IE E
23. MINAL4 1 Co don MNT LOUT T SPR Bos SOL HW R SPRING 4 40K Kostas T SPRING R201 CONTROL B reds gt SCL BPID DOWNLOAD B_TERMINAL2 8 26 i e 1 DSUB SCL CONTROL C lt gt SDA_GPID T_TERMINAL2 14 1000pF EU 100 1 DSUB_SDA SHTELD_PLATE D111 9407 SDA_HW CDS3C30GTH EU EU EU75NDNEUO Y SC1_LIN SC2_LIN 8 a 10 SYNC SEL FUNCTION Shim 9598 1 D104 B B HIGT HDMI CDS3COEGTA d EU EU 5 an 8589 1068886 Low Der I B L107 COMPONE DON 2 Compnont Option 8 TV LOUT MNT LOUT 114 IC807 Lioa STMAV340 8 ae J209 02 T BOR za 41 1 SC1_AIN w EU COMP1 Y 0112 8109 106 7150 HA ensacoseta 220K 1000pF gt 220K 1000pF RD 10 SPAING R204 RD D SPRING COMP2 Y m S END S END GND 2 EU yo D200 2 220K mE 38 U cos 27 7e s gt RD CONT
24. SC SPECIAL FEATURES IMPORTANT FO FILRE AND ELECTRICAL SHOCK HA ESSENTIAL THAT ONLY MANUFATUR THE CRITICAL COMPONENTS IN TH ES SPECFI R D 3 3VST DVCTP voo 2 VO PE FUE N qm N D VD gt VDICLK VDI O 7 ie LKI DIMMING2 C 55607 1208 ETIC DIAGRAM INCORPORATES HOTECTION FROM X HADIATION EN SERVICING IF IS ED PARTS BE USED FOR N SYMB OL MARK OF THE SCHEMETIC vr gmo un vr uwmo o QJ 0 988 ed 2 7 Zm n lt lt lt lt 4 cio a gt lt lt lt lt mim e gt gt 0 wn lt lt 2 2 Ww 1 gt H a ul gt a v n VSUP8 OAU 22003 KO 4S FE 5 un 5 053 HT BELA p A00 TCLKAS 18 AA 100 As a uos 659 1 DOWNLOAD CI SYNC SEL lt AMP MUTE AV_AUDID_L 1 COMP4 L
25. SSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC AUDIO H RXQ AX 1 4 2 2 AXCLK CN703 SMAWZOD 12 CN700 19507WR 30 3 3VST 9700 AUD amp EMD a SI48250Y i508 SIDE C 9920 1 3216 501 x 3 500 2 4 0 SIDE S SW 3 L704 8 PANEL DISP EN 5 a ms 5 500 5 a7 5 8 TR 4 pav 9 18 p 501051 PANEL DISP EN SIDE_CVBS u 5 5 OPTION 1 zi 1 0 VIBE DECODER 5 gt EYE FAN ALRAM E e m zu 5 qi Jm HH ubi P _ c103 1033 OPT EL OPTION 22pF n i e Ble gt 81007 ora e 1M We e 1 10 CN702 N Pus 12505WS 08A00 LI CU LX ob 4 704 II O J O A ulli Qo I II Il gt x crt 4 m gt 0 D 0 Oo
26. ack normal Check CN703 Sam as Block A 7 In the case of an unusual display in Side S Video mode video input of the A V jack normal Check CN703 Pin1 Pin3 20 8 In case of an unusual display in SCART 1 mode Is the video input of the A V jack normal Check R172 Sam Block 9 In the case of an unusual display in SCART 1 RGB mode video input of the A V jack normal Check R110 R170 R171 R173 Yes Sam as Block A 10 In the case of an unusual display in SCART 2 mode Is the video input of the A V jack normal Check R174 Sam Block 11 In the case of an unusual display in component 1 mode input of the A V jack normal Check R248 R249 R250 Change the IC IC500 12 In the case of an unusual display in component 2 mode input of the A V Jk202 normal Check R241 R242 R243 Change the IC IC500 13 In the case of an unusual display in RGB mode H G B input and H V sync of the JK201 normal Check R220 R221 R253 R254 Change the IC IC500 22 14 Sound 1 Symptom 1 LED is green 2 There is a picture but no sound 2 Follow check 15 there sound in any mode Set speaker on Is the speaker on in the menu Is there no sound only fo
27. de wach Ints rep AdiWatn C om Ex pa x 5 t and us es stil meto dewierntbootieoer Dat jo shortcut to Bunker Version a download Ernar Flash Double click 10 3 Double click the blue box and confirm Bootloader Version as 42 oix File Edit Watch Inits Views Window Add Watch Remove AutoRead C On Off 4 pini D a C Documents and Settings amp dministrator Desktopinstallivetp_dowrn bootloader bat 7 Bootloader Version Erase Flash Erase Flash 2 OSA a VAR lee A Load Hex gt Flash EZ 4 Click the Erase Flash button download vi2c Yisuall2C3 loj x File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off bini D a C Documents and Settings 4dministrator Desktop installctp_downibootloader bat Go 2 Bootloader Version az Erase Flash 5 Double click the download file low then edit window will be opened oix File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off 4 pini Ou C Documents and Settings Administrator iDesktop installwctp_dowenibootloader bat Go 2 Bootloader Version 4 SEE eo 6 Click the choice button in the edit window then file choice window will be opened Walch item CMVIZCHicttvetiwx
28. e Pec onm 24 vem Mwst he PII Vete DER he ud 24 Vete atem x 24 ER he 24 Ver EDIE rem vo ur 2 Vote 53009 tet dv 2 Vete Yrs he sos 28 Vet 6S8 1 2 poster 23 vete DX te nm potior g DE ward Watch fileMYctp 051103 ES finabhex 1 Witch Item Display Init DAL VCTO_Lond_Hex via imertace Address Offset Fram eet mer Te Walch Memory Flash Options Mw Mritahle delay on 120 error Readable Acther Hide in graphic mode tI gt Controls abemys on EE Script Name eee 11 Under Downloading progress Fl Progress Loading up to byles lene 1h 12 If download is failed for example No acknowledge from slave execute download again from 1 yctq_tvt vi2c Visuall2C3 File Edit Watch Inits Views YCT69xyP Window Help n Add Watch Remove AutoRead Off Pini o bootloader bootloader B1 bat Bootloader Version Erase Flash Erase Flash eo LoadHex Flash Load Bin gt Flash CWl2Cicwct6wxyPthex_file ctp_051103_ES_final hex CWil2Cicwct
29. e performed in the circumstance of 25 5 C of temperature and 65 10 of relative humidity if there is no specific designation 4 The input voltage of the receiver must keep 100 220V 50 60Hz 5 Before adjustment execute Heat Run for 30 minutes at RF no signal 3 Adjustment items 3 1 PCB assembly adjustment items 1 Download the VCTP main software 16500 VCT Pro 2 Channel memory IC501 EEPROM 3 Color carrier Adjustment 3 2 SET assembly adjustment items 1 DDC Data input 2 Adjustment of White Balance 3 Factoring Option Data input 4 PCB assembly adjustment method Using VCTP Download program 4 1 Download program installation 1 Extract a Zip file setu visus rc fe Satu 02001 XP 2000 vem i n lr Channal Fia Frider Install the LPT Driver Install the Visual I2C 4 2 87 Computer E LPT Port Driver LptDrv Setups Program Files Micronas Visual I2C gt Port Driver Use for Windows 95 98 Setup LptDrv v0104 9x exe Use for Windows 2000 XP Setup LptDrv v0202 XP 2000 exe for Windows NT Setup LptDrv v0104 NT exe 3 Verification Start gt Programs gt Micronas gt Visual I2C or LptDrv wu tame erip je Erase Flan je NOD Loud gt Flash e Double click Version 2 2 1 LPT Post LPT 1 Demy LPT SETTING Timeout pow mE D
30. ead of the nearest component on the other side Carefully crimp and solder the connections CAUTION Be sure the insulated jumper wire is dressed so the it does not touch components or sharp edges SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 1 Application range 4 Specification and performance of each parts are followed This specification is applied to LP78A chassis each drawing and specification by part number in accordance with BOM 2 Requirement for Test 5 The receiver must be operated for about 20 minutes prior Testing for standard of each part must be followed in below to the adjustment condition 3 Test method 1 Temperature 25 5 C 77 9 F CST 40 5 C 2 Humidity 65 10 3 1 Performance LGE TV test method followed 3 Power Standard input voltage 100 240V 50 60Hz 3 2 Demanded other specification Standard Voltage of each products is marked by models Safety CE IEC Specification CE 4 General Specification LCD Module tem Measurement 26 27 32 37 42 wide Color Display Module asana LOD Module ______ ____ O o Temp 0 40 Humidity 0 85 1 Storage Enwronment Temp 20 60 deg Humiaty 0 65 _ p a NEN WAKERINUOGMORRUGPT LGE SPEC E Input Voltage 100 240V 50 60Hz Power on Green Power Consumptio
31. elay gt 1 Time out gt 500 ms LL RS 5 Exchange the bootloader bat file T Frise erase teen CaDocuments and Getting MAdmin nator IDE downers Load Her gt Flash tte Watch Wem Mame boolloader bat Watch Item Display Init Value DAL Walch aunch a Flle via Detault Interface m 4 Writable Aleadable delay IZC error Aive 7 Hide in graphic mode F F Cnnirnlz always nn Script Lance __ Double click the Red area ltem sc to name of file se sx vetpdown download download Ei download cs ONU bootaader DE 47 All Files 27 gt Select the Bootloader bat file install gt VCTP_download gt Bootloader gt Push OK 3 downlaad_cs vi2c Visuall2C 7 Save the file download cs vi2c P before closing Don t Save Cancel gt Finish the program after saving the file download_cs vi2c if you click X the massage appears automatically 4 2 S W program download 1 Download method 1 PCB Ass y 1 Connect the download jig to D sub jack 2 Execute Download vi2c program in PC then a main window will be opened downloader File Pie p
32. elp Add Watch Remove AutoRead C On Off 4 bini D a C Documents and Settings amp dministratorDesktopinstallivotp_down bootloader bat Go 2 Bootloader Version 4 Erase Flash Erase Flash E Load Hex gt Flash F C Documents and Settings amp dministratoriDesktop26_32LC2R_ZU 7 Double click the download file low then edit window will be opened o File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off D pini C Documents and Settings V amp dministrator Desktop installctp downWootloader bat Go 2 Bootloader Version Erase Flash ge ER Er er m OPTED D RHEIN Documents and Settings amp dministratoriDesktop26_32LC2R_ZJ_VYCTP_Y2 od Load Hex gt Flash 8 Chick the choice button the edit window then file choice window will be opened Watch Watch Display Init Value DAL DAL Watch Launch File Default Interlace mul Extra Side 0 From Era 1 150 Gide 1 fl Eira 7 Options Readable Motreadehle User apered Fin No delay on 126 crror Actives F Hide in graphic mode Shee Checkbox E Show Name Controls ahways on Heme In separate window Show geript Name Cancel Ok 9 Choose the Hex file in f
33. he slotted type the following technique should be used to remove and replace the IC When working with boards using the familiar round hole use the standard technique as outlined in paragraphs 5 and 6 above Removal 1 Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Heplacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coating to the areas Small Signal Discrete Transistor Removal Replacement 1 Remove the defective transistor by clipping its leads as close as possible to the component body 2 Bend into a U shape the end of each of three leads remaining on the circuit board 3 Bend into a U shape the replacement transistor leads 4 Connect the replacement transistor leads to the corresponding leads extending from the circuit board and crimp the U with long nose pliers to insure metal to metal contact then solder each connection Power Output Transistor Device Removal Replacement 1 Heat and remove all solder from around the transistor leads 2 Remove the heat sink mounting screw if so equipped 3
34. hwxyPibiniyctp_fyy_unable bin 3 Download method 3 SET 1 Push the Tilt button in an Adjust Remote control Then the LCD TV will change a slave mode slave 12 101 War ints _ AddWateh nemoe C n 4 AUT E KALTE amp nd us Hop ssl oto Tee bat Go Bundkascer Versioni az E download a Ernan Flash Erase fish 2 2 Connect Zig to TV using a D sub cable 3 Execute Download_CS vi2c program in PC then a main widow will be opened Double click 4 Click GO button and op Acn wa e ctor If you don t push the go the Hex file would not be downloaded although the download proceeds normally at first glance 5 Double click the blue box and confirm Bootloader Version as 42 o download vi2c Yisuall2C3 10 x File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off Pini C Documents and Settings amp dministratorDesktopinstallivetp_down bootloader bat Bootloader Version Erase Flash 2 Erase Flash BI oad Hex gt Flash 2 6 Click the Erase Flash button download vi2c Yisuall2C3 lal x File Edit Watch Inits Views Window H
35. ktop installwetp_dowmbootloader bat Go Bootloader Version Erase Flash 7 Double click the download file low then edit window will be opened download vi2c Yisuall2C3 File Edit Watch Inits Views Window Help Add Watch Remove AutoRead C On Off 4 Pini D a C Documents and Settings Administrator iDesktop installctp_dowenibootloader bat Go Bootloader Version eo Flash eo Load Hex gt Flash n 8 Chick the choice button n the edit window then file choice window will be opened Watch 3 Push the S W off Disconnect SCL to GND using switch bentlonder bat Watch Display Init Value DAL a DALS jig Watch Launch a Defaultinterlace it ko Options Weitable Nendable 1000 1 ush S W delay on 12 crror Active Hide in graphic mode Show Active Checkb 2 SI None Controls always on I ind m si t Script Name Cancel Ok 11 9 Choose the Hex file in folder and execute downloading with click open button um 2 hes Me j eco stepbystep S w Vem DESC y fw ide a d patch 2 ute ee e vem 2 vr kh em ENT vik M Vet
36. l solid state device heat sinks are correctly installed 7 Always connect the test receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 8 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices can be damaged easily by static electricity Such components commonly are called Electrostatically Sensitive ES Devices Examples of typical ES devices are integrated circuits and some field effect transistors and semiconductor chip components The following techniques should be used to help reduce the incidence of component damage caused by static by static electricity 1 Immediately before handling any semiconductor component or semiconductor equipped assembly drain off any electrostatic charge on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the 2 unit under test After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charge buildup or exposure of the assembly Use on
37. ly a grounded tip soldering iron to solder or unsolder ES devices Use only an anti static type solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ES devices Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices Do not remove a replacement ES device from its protective package until immediately before you are ready to install it Most replacement ES devices are packaged with leads electrically shorted together by conductive foam aluminum foil or comparable conductive material Immediately before removing the protective material from the leads of a replacement ES device touch the protective material to the chassis or circuit assembly into which the device will be installed CAUTION Be sure no power is applied to the chassis or circuit and observe all other safety precautions Minimize bodily motions when handling unpackaged replacement ES devices Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device General Soldering Guidelines 1 Use a grounded tip low wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range or 500 F to 600 F Use an appropriate gauge of RMA
38. n TBD 42 max 26 27 32 37 Red ____________ LCD Module Outline Dimension H x V x D with inverter w foss sr exo Wxwm CMO Outline Dimension mm H x V x D with inverter UT fg pem em Pixel Pitch mm H x V Dm fg ER LPL Outline Dimension 626 x 373 x 44 1 mm 760 0 x 450 0 x 48 0 Volume 1 8 volume of sound distortion point 877 0 x 516 8 x 55 5 1006 x 610 x 56 Display Colors 16 7 16 777 216 LPL 26 5 Model Specification EU Specification Broadcasting system PAL BG DK PAL SECAM L L Available Channel BAND C1 C69 SCART Input 2EA PAL SECAM NTSC Full Scart 1EA Harf 1EA ress 5 mwoy pM Variable Audio out 1EA 6 Component Video Input Y CENE 7 RGB Input Analog PC wewe sss m _ pm 8 HDMI input DTV ADJUSTMENT INSTRUCTION 1 Application Range This spec sheet is applied all of the 26 32 37 42 LCD TV LP78A by manufacturing LG TV Plant all over the world 2 Specification 1 Because this is not a hot chassis it is not necessary to use an isolation transformer However the use of isolation transformer will help protect test instrument 2 Adjustment must be done in the correct order 3 The adjustment must b
39. o repair a defective copper pattern at IC connections use the following procedure to install a jumper wire on the copper pattern side of the circuit board Use this technique only on IC connections 1 Carefully remove the damaged copper pattern with a sharp knife Remove only as much copper as absolutely necessary 2 carefully scratch away the solder resist and acrylic coating if used from the end of the remaining copper pattern 3 Bend a small U in one end of a small gauge jumper wire and carefully crimp it around the IC pin Solder the IC connection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on the component side of the circuit board 1 Remove the defective copper pattern with a sharp knife Remove at least 1 4 inch of copper to ensure that a hazardous condition will not exist if the jumper wire opens 2 Trace along the copper pattern from both sides of the pattern break and locate the nearest component that is directly connected to the affected copper pattern 3 Connect insulated 20 gauge jumper wire from the lead of the nearest component on one side of the pattern break to the l
40. older and execute downloading with click open button 1 na LE ge sump Shen 4 Zi ven hes SVr 2a 2 Vep oniy f Vete 251009 suba dd patch WBS ag Vem 2 hen GO hex 59 3 gd ven DEM prisur tw gd Vete 051 101 hr gl ve Pec onfroliee hes ven EM Vers HC set hee 21 Vete EDE ence check han Seara Iz 2 vete emos check hox 059008 hes vete ES01 050914 e gd ven LEE hw hes onen ner vep tet cade hes eS conten MOTS hes tet 2 Vite sontion ENTE hes 69008 hen gl cto sovtion BOT has E ee hw has 8 ce poston EORR has uut Be lt gt D NN 051103 ES eal DE ta Ad Fies 10 Click OK button the edit window Name C MVI2CWictivetBwacyPtthex_filelVctp 051103 ES final hex Watch ltem Display Init Value DAL fan DALs Watch Load Hex Detoutt Interface Address Oftset Flash From 0x0 Offset 0 XRAM To Ox Extra oxo Options v Writable Readable User spoon 700 T delay on 120 error r F Hide in graphic mode uw Active Checkbox Pe Controls always on eparate window Show subi
41. ont 40077 A 9C8D 8DIC 07 10 00 72 51 00 zu 28 55 00 Ca 21 00 00 64 19 00 40 41 00 26 30 10 B0 36 00 00 32 00 00 16 42LC7R mr 00 BA zu EO 20 10 10 ae 96 00 ca SE 21 00 00 18 gt 06 09 80 90 20 EO 1D 10 10 60 00 00 32 08 00 10 40078 0 9C8E 8E9C Hx uu FL DU 4L un Ha UU DO UD DU XP 55 45 08 0 DA Z0 00 00 00 FC 00 4C 47 20 54 55 20 20 20 20 20 20 20 wa 00 00 00 FD 00 32 56 45 00 0 20 20 20 20 20 20 Flag amp Check um Check rum E Flag amp Checkaum Checkeum OF Extension Flag 01 b Serial Controlled on production line coro c Month Year Controlled on production line ex Monthly 03 gt 03 Year 2005 gt OF d Model Name Hex EDID DATA 6 Adjustment of White Balance 6 1 Required Equipment 1 Remote control for adjustment 2 Color Analyzer CA 110 or CA 210 or same product 3 Auto W B adjustment instrument only for Auto adjustment Model Name Model Name HEX 32LCAR ZA 00 00 00 FC 00 33 32 4C 43 34 52 20 41 OA 20 20 42LC4R ZA 00 00 00 00 34 32 4C 43 34 52 2D 41 OA 20 20 e Checksum 7EH Changeable by total EDID data 6 2 Connecting diagram of equipment for 5 1 Sequence of Adjustment measu
42. ormality exists that must be corrected before the receiver is returned to the customer Leakage Current Hot Check See below Figure Plug the AC cord directly into the AC outlet Do not use a line Isolation Transformer during this check Connect 1 5K 10watt resistor in parallel with a 0 15uF capacitor between a known good earth ground Water Pipe Conduit etc and the exposed metallic parts Measure the AC voltage across the resistor using AC voltmeter with 1000 ohms volt or more sensitivity Reverse plug the AC cord into the AC outlet and repeat AC voltage measurements for each exposed metallic part Any voltage measured must not exceed 0 75 volt RMS which is corresponds to 0 5mA In case any measurement is out of the limits specified there is possibility of shock hazard and the set must be checked and repaired before it is returned to the customer Leakage Current Hot Check circuit AC Volt meter Good Earth Ground such as WATER PIPE To Instrument s CONDUIT etc exposed METALLIC PARTS 1 5 Kohm 10W SERVICING PRECAUTIONS CAUTION Before servicing receivers covered by this service manual and its supplements and addenda read and follow the SAFETY PRECAUTIONS on page 3 of this publication NOTE If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication always follow the safety precautions Remember Safety First General
43. r HDMI Is the speaker cable normal Check the Speaker cable No gt Download EDID data 15 there no No No a pun pie VR em COM2 PC Replace the IC500 Is the IC500 operating normal Check the signal after IC600 refer to circuit diagram No Check the Tuner In Out Yes Is there no sound only for HF No Replace the IC601 Is the 1 601 operating normal Yes Replace the VSC BD 23 15 HDMI mode Is only video normal Yes Download EDID data each port Ne 1 Check TV input mode Y HDMI 1 port support HDMI and DVI So if you input DVI signal and PC audio from Yes phone jack You can hear PC audio 2 Unplug and plug in the HDMI cable sometimes ESD surge occurred at HDMI port 3 Check the HDMI Mute register 0x68 offset 0x37 4 Check the Audio out channel mute register 0x68 Is only audio normal offset 0x32 is appropriately enabled Check the TMDS line wave R312 E3273 Check HDMI source Change to another source or cable Is the wave continuous Yes 1 Check the HDMI receiver s status register 0x60 offset 0x66 If the value is Oxf 0x8 it is normal 2 Check the HDCP register 0x6 offset 0x32 Enable bit 6 HDCP key loaded Enable bit 5 HDCP decryption active Enable bit 4 HDCP authentica
44. receiving the aging off command F3 00 00 from adjustment equipment Need to transmit the aging off command to TV set after finishing the adjustment Heade 00 FF FF FF 00 Varese Product 60 02 2 Product 0 07 2004 01 01 01 Of 16043009 EINE Version 01 02 Perret Ponte 13 50 24 ume UE Coke Characktrithiep Chassis 77 57 4C 23 Ca 45 50 4 Push the Write Data amp Verify button And confirm Yes 5 If the writing is finished you will see the OK message 15 3 DDC adjustment support command CMD HEX ADR Aging 00 Input select F4 0x10 TV 0x20 AV1 SCART1 0x21 AV2 SCART2 0x23 AV3 Side AV 0x40 0x50 0x60 0x90 Component1 RGB DTV RGB PC HDMI1 DTV RGAN 16 00 GGAN 18 00 GAIN adjustment 6 3 Adjustment of White Balance For Manual adjustment Operate the zero calibration of the CA 110 or CA 210 then stick sensor to LCD module when you adjust For manual adjustment it is also possible by the following sequence 1 Select RF no signal by pressing POWER ON key on remote control for adjustment then operate heat run more than 15 minutes If not executed this step the condition for W B will be differ The W B condition is Picture Mode Standard MA
45. resin core solder composed of 60 parts tin 40 parts lead Keep the soldering iron tip clean and well tinned Thoroughly clean the surfaces to be soldered Use a mall wire bristle 0 5 inch or 1 25cm brush with a metal handle Do not use freon propelled spray on cleaners Use the following unsoldering technique a Allow the soldering iron tip to reach normal temperature 500 F to 600 F b the component lead until the solder melts c Quickly draw the melted solder with an anti static suction type solder removal device or with solder braid CAUTION Work quickly to avoid overheating the circuit board printed foil Use the following soldering technique a Allow the soldering iron tip to reach a normal temperature 500 F to 600 F b First hold the soldering iron tip and solder the strand against the component lead until the solder melts c Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil and hold it there only until the solder flows onto and around both the component lead and the foil CAUTION Work quickly to avoid overheating the circuit board printed foil 9 Closely inspect the solder area and remove any excess splashed solder with a small wire bristle brush IC Remove Replacement Some chassis circuit boards have slotted holes oblong through which the IC leads are inserted and then bent flat against the circuit foil When holes are t
46. ring For Automatic Adjustment 1 DDC data of Analog RGB 1 Init the data EDID Tester 24058 255 128Byte Analog Digital OUH Model 041022 RGB ANA Analog Digital COLOR ANALYZER 100 LCD CA110 CA210 ion Internal pattern of VCT PRO ee ee Work Data EDID Rte Analog Header 00 FF FF FF FF FF FF DU Verdes Product ID Eda Standard Data id s hians Vac n remi 2 I2C serial communication PC 2 Load the data Open file Analog RGB LP78A_RGB ANA Digital HDMI LP78A HDMI DVI 1 Enter the DDC adjust mode Enter the DDC adjust mode at the same time heat run mode when pushing the power on by power only key Enter the adjust mode and change the input mode to AV3 TA MA AV2 when pushing the Front av key Maintain the DDC adjust mode with same condition of Heat run gt Maintain after AC off on in status of Heat run pattern display 3 Set the S W as below E EDID Tester Var 2 058 256 1 Analog Digital ey YA ZEE Model MEUSbAUATUZZ Analogi Dna Work Data Eje xo Analog Siandard Hes 2 Release the DDC adjust mode Release the adjust mode after AC off on or std by off on in status of finishing the Hear run mode Release the Adjust mode when
47. s ind e L gt lt gt gt gt mI gt gt gt gt FT Im a lt d x 2SC38755 ECIAL FEATURES IMPORTANT ECTION FROM X ee amp B D an COMP1_Pb tor T ION ci 1040 1uF COMP2 PD 0 T A vS 1 V m 4 198 GINO VDIS THE N SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES FL amp Connector y I t sci c Cae yo tur e SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X RADIATION AVS_2 016 FILRE AND ELECTRICAL SHOCK HAZARDS WHEN SERVICING IF IS 1 z v ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR Ry l M tur e GINA VDI7 THE CRITICAL COMPONENTS IN THE N SYMBOL MARK OF THE SCHEMETIC EE I pora AVD 2 VDD_3 5 j S 2 5v Avo 5 010
48. set Blue Offset Gain Gain lt Default Value on OSD gt 8 Internal press test Dielectric Voltage AC lt gt FG 1 5 At 100mA for 1sec Line At 100mA for 1 Dielectric Voltage Without FG At 100mA for 1sec Line At 100mA 1 9 Sound spec Item Min Typ Wax Unt too Audio Practical Max Output L Mono R 16 TROUBLESHOOTING 1 No power 1 Symptom 1 Minute discharge does not occur at module 2 Front LED does not activate 2 Press check Start Check Is the power cord plugged in No gt Plug in the power cord Are the line filter and Connect the cable PSU connected Plasma CN1 Is the correct fuse for the PSU in place LCD F100 No 3 Replace the fuse PSU and 13 14pin cable connected to the VSC board No Connect the 13 14pin cable Next remove all cables connected to the PSU and switch the AV voltage to manual If the ST by 5V does not operate replace the PSU 472 2 Protect mode 1 Symptom 1 After lighting once it does not discharge minutely from the module 2 The relay falls there is an audible Click 3 The color of the front LED turns from green to red 2 Follow check Start Check Is the Power Board normal Are all the connectors normal Is the Y Board n id appropriate fuse
49. tem 11 Downloading Loading up to 574288 bytes bene 716 CC eC Stop 13 12 If download is failed for example No acknowledge from slave execute download again from 1 tvt vi2c Visuall2C3 Add Watch Remove Pini bootloader bat bootloader_B1 Bootloader Version Erase Flash 2CicwctB6wxyPibiniyctp_fyy_unable bin File Edit Watch Inits Views VCTBSxyP Window Help AutoRead On CWl2Cicwct6wxyP hex filevctp 051103 ES final he oft 4 Erase Flash eo Load gt Flash 2l 4 3 Channel memory download 1 Connect the download jig to D sub jack 2 Execute Channel vi2c program in PC then a main window will be opened shortcut to Channal data EEPROM 74cX Version 1 2 4 Check the communication is OK or not gt Push the Read area Ackn Check and check Cyan area is OK message ILU PAN p xi G available MICRONAS EEPROM 24 Version 1 2 5 Push the Update NVM from File Klnvm_main_modified vi2c Visuall2C3 AB tdt Watch Jnits Views Window Help o Add Watch Remove AutoRead C On otf lt MICRONAS Direct Access Fill 4 Address 0 00000000 EEPROM 24cX E 2l 0x00000000 ra Version 1 2 Data 0400000000 of Bytes 1 428K 2
50. tion attempted Yes Reset TMDS power down on register Normal video Normal audio 0x60 offset Ox3f gt Oxff 24 BLOCK DIAGRAM 110 L uo aN o un INO youms 1 9 cdWOO dwy 1 4 1 4 AY O0cv9V3l VH 8 LINO dS _ H Id Od lt ealoleval 5 E pets vou 100 LNW ZEIT CLE i 315 YINNL n 8 Eor 6066ML 8300930 4 219 LNW 3 dSIQ Ieued E ro vie e V o MEME LZ LL SO edWOO YUAS II ee ML E P i OJd LOA E 14 94 A dWOO SGAT 408 d0801 4d 9 dA 493431934 SONL FM10 2 1 0 L206XNV ALG Od PR T 419 2 V1 0 1 SAISH ee ee gt eene SA SH 08933 ALg Og god 25 EXPLODED VIEW 26 2 ANALOG 1 200 pace T pc sER CLK ______ PC SER DATA JK102 JK103 PPU205 04 PPU20B 04 PC_SEA_CLK PC SER DATA D22
51. website http biz LGservice com LG LCD TV CHASSIS LP78A MODEL 32LCA41 AR 32LC41 4R ZA 32LC42 32LC42 ZC 32LC43 32LC43 ZA ZE 32LC44 32LC43 ZB CAUTION BEFORE SERVICING THE CHASSIS HEAD THE SAFETY PRECAUTIONS IN THIS MANUAL CONTENTS CONTENTS 2 SAFETY PRECAUTIONS SPECIFICATION e 6 ADJUSTMENT INSTRUCTION ener 9 TROUBLE SHOOTING esse ee 17 BLOCK DIAGRAM 25 EXPLODED VIEW P 26 EXPLODED VIEW PARTS LIST un ein 27 REPLACEMENT PARTS 28 SVC SHEEI a SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and Replacement Parts List is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock Fire or other Hazards Do not modify the original design without permission of manufacturer General Guidance An isolation Transformer should always be used during the servicing of a receiver whose chassis is not isolated from
52. yPtthex fileliVctp 051103 ES finalhex Witch Item Display Init Value ou gt Match CTO Load Hex via Default Interface Memory Address Offset Flash From fox Ofset pt SRAM Extra ptlans gt Peadable User 00 F delay on 120 enor Active Hide in graphic mode Shoe Ace diaries Controls always on I Erant indem E 1 Script 7 Choose the Hex file in folder and execute downloading with click open button we mi 3j oO dt A stepoystep gi Vow I5 HIS Pn 22 mj 0520007 hex Sj 151009 suba d patch SBM ae ver 2 he Ei Ve ZEN 01 Only Patch Sp Tin hex 59 3 wem 053007 Pw gd vete 051 101 _ _ ____ gi ce chech hex we ne 2 Ver Vete 5 C set hee 23 Vete Ti tech af 21 Vet check h gg vete 2 Vete 059008 21 ve 501 050914 ten 1 if conten he a 53009 tet cade hex gs porion DTS he 2 Vete bt crm Vene 23 eo sonen he 2 ven he porton he 23 vete 059 fw 2 ce has 22
Download Pdf Manuals
Related Search