LG Electronics MODEL: 42LF66 42LF66-ZE manuale d’uso

LCD TV SER VICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CHASSIS : LD75A MODEL : 42LF66 42LF66-ZE website:http://biz.LGservice.com Downloaded From TV-Manual.com Manuals[...]

- 2 - CONTENTS CONTENTS .............................................................................................. 2 SAFETY PRECAUTIONS ..........................................................................3 SPECIFICA TION ........................................................................................6 ADJUSTMENT INSTRUCTION ......[...]

- 3 - SAFETY PRECAUTIONS Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by i n t h e Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent Shock, F[...]

- 4 - 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 t[...]

- 5 - 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 the 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 techni[...]

- 6 - 1. Application range This spec sheet is applied to the 37", 42", 47" LCD TV used LD75A chassis. 2. Specification Each part is tested as below without special appointment. (1) Temperature : 25 ± 5°C(77 ± 9°F), CST : 40 ± 5°C (2) Relative Humidity : 65% ± 10% (3) Power Voltage : Standard input voltage (100-240V~, 50/60Hz) [...]

- 7 - 5. Chroma & Brightness 5-1. FHD Module-47LF66 Item Min Typ Max Unit Measurement Result Remark Viewing Angle R/L 178 Viewing R/L 178 <CR>10> U/D 178 Angle<CR>10> U/D 178 White average 47LF65 450 550 - cd/m 2 - 100IRE Full White Pattern(255gray) brightness - Picture : Dynamic (Cool) Brightness uniformity 1.3 0 1.3 cd/m 2 -[...]

- 8 - 5-2. FHD Module-42LF66 Item Min Typ Max Unit Measurement Result Remark Viewing Angle R/L 178 Viewing Angle R/L 178 <CR>10> U/D 178 <CR>10> U/D 178 White average 42LF65 450 550 - cd/m 2 - 100IRE Full White Pattern (255gray) brightness - Picture : Dynamic (Cool) Brightness uniformity 1.3 0 1.3 cd/m 2 - 100IRE Full White Patter[...]

- 9 - 5-3. FHD Module-37LF66 Item Min Typ Max Unit Measurement Result Remark Viewing Angle R/L 178 Viewing Angle R/L 178 <CR>10> U/D 178 <CR>10> U/D 178 White average 37LF65 400 500 - cd/m 2 - 100IRE Full White Pattern (255gray) brightness - Picture : Dynamic (Cool) Brightness uniformity 1.3 0 1.3 cd/m 2 - 100IRE Full White Patter[...]

- 10 - 6. Component Video Input (Y, P B , P R ) No Resolution H-freq(kHz) V-freq.(kHz) Pixel clock(MHz) Proposed 1 720*480 15.73 59.94 13.500 SDTV, DVD 480I(525I) 2 720*480 15.75 60.00 13.514 SDTV, DVD 480I(525I) 3 720*576 15.625 50.00 13.500 SDTV, DVD 576I(625I) 4 720*480 31.47 59.94 27.000 SDTV 480P 5 720*480 31.50 60.00 27.027 SDTV 480P 6 720*57[...]

- 11 - 01 2 3 4 5 6 7 8 9 A B C D E F 00 F F FF FF FF FF FF 0 1E 6D 72 75 1 1 1 1 10 9 10 1 3 1 46 27 78 EA D9 B0 A3 57 49 9C 25 20 11 49 4B A5 6E 0 31 40 45 40 61 40 81 80 90 40 30 D1 C0 1 1 1 1 1A 36 80 A0 70 38 1F 40 30 20 40 35 0 E8 26 32 0 0 1A DA 2F 78 E0 51 1A 25 40 50 58 98 14 0 E8 26 32 0 0 1A 0 0 0 FD 0 39 60 4B 1F 54 12 0 0A 20 20 20 20 [...]

- 12 - 8. HDMI Input (PC) No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remarks 1. 720*400 31.468 70.08 28.32 If change DTV 2. 640*480 31.469 59.94 25.17 VESA 480p Display 37.500 75.00 31.50 848*480 60Hz, 852*480 60Hz : No signal 3 800*600 37.879 60.31 40.00 VESA 46.875 75.00 49.50 4. 832*624 49.725 74.55 57.283 Macintosh 48.363 6[...]

- 13 - 9. MODULE 9-1. General specifications-47LF66: LC470WU1-SLB2 No Item Min Typ Max Unit Remark 1 Display area 1039.68 (H) * 584.82(V) mm 2 Outline dimension 1096 (W) x 640 (H) x 48.1 (D) mm with inverter 3 Number of Pixels 1920 (H) x 1080(V) 1Pixel=3RGB Cells 4 Cell pitch 541.5um (H) x 541.5um (V) um G cell 5 Color arrangement RGB stripe arrang[...]

- 14 - 10. Mechanical specification 10-1. 47LF66 No Item Content Remark 1 Product Width (W) Length (D) Height (H) Dimension Before Packing 1144.5 331 825.6 With Stand After Packing 1230 410 912 2 Product Only SET 37.46 kg With Stand Weight With BOX 44.7 kg 10-2. 42LF66 No Item Content Remark 1 Product Width (W) Length (D) Height (H) Dimension Befor[...]

- 15 - ADJUSTMENT INSTRUCTION 1. Application Range This spec. sheet is applied to all of the LD75A chassis manufactured at LG TV Plant all over the world. Ex.) LD75A : 37/42/47LB5DF-ZC, 37/42/47LY3DF-ZA 2. Specification 1.1 Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transfor[...]

- 16 - 5. Method of T ool Option setting 5.1. Press ADJ Key in the Adjust remocon. 5.2. Select "Tool Option1 and 2" by using (CH+/-) key, and Press Number Key. 5.3. Model Table. 5.4. After changing, push the EXIT Key. 6. ADC Calibration * Before adjusting White-balance , the AV ADC should be done. * Caution : - System control RS-232 Host [...]

- 17 - 3) Press the IN-START key on R/C for adjustment. [Fig.3] 4) Press the (Vol.+) key to operate the set , then it becomes automatically. 5) After downloading complete, the ‘OK’ word appears. 6) Auto-RGB OK means adjustment is completed. 7. White Balance * Test Equipment Color Analyzer (CA-210, CA-100+ / CH.9) -> When you adjust LCD color[...]

- 18 - 5) When the R/G/B GAIN is 80 on OSD, it is the FULL DYNAMIC Range of the Module. In order to control white balance without the saturation of FULL DYNAMIC Range and DATA, one of R Gain / G Gain / B Gain should be kept on 80, and other two is controlled lowering from 80. * Color Temperature: Cool, Medium, Warm 1. When R GAIN is set to 80 - Con[...]

- 19 - TROUBLESHOOTING 1. No power (1) Symptom 1) Doesn't minute discharge at module. 2) Non does not come in into the front LED. (2) Check follow Plug in power cord No Yes Is plug in power cord? Connect cable. No Is connect the Line Filter and Power Board Cable? Replace fuse. No Is normal the Fuse(F100) on Power Board? Connect Cable. After re[...]

- 20 - 2. Protect mode (1) Symptom 1) After once shining, it does not discharge minutely from module. 2) The relay falls.(The sound is audible “Click”.) 3) It is converted with the color where the front LED is red from green. (2) Check follow Is normal the Power Board? Replace Power Board. Is output the normality Low/High voltage except Stand-b[...]

- 21 - 3. No Raster (1) Symptom 1) No OSD and image occur at screen. 2) It maintains the condition where the front LED is green (2) Check follow Does minute discharge At Module? Is output the normality Low/High voltage except stand-by 5V? Is the inverter on? Check the LCD Module Yes No Yes Replace the Power board. No No Is the LVDS cable normal? Re[...]

- 22 - 4. In case of occur strange screen into specific mode 1) In case of does't display the OSD (1) Symptom 1) LED is green. 2) The minute discharge continuously becomes accomplished from module (2) Check follow Is normal the LVDS cable? Replace Power Board. Is the LVDS cable connected well? Cable inserts well. Yes No No Replace FIL8548 IC(I[...]

- 23 - 2 ) In case of does't display the screen into specific mode (1) Symptom - The screen does not become the display from specific input mode (RF, AV, Component, RGB, DVI). (2) Check follow (1) Check the all input mode should become normality display. (1) Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become normality displa[...]

- 24 - (4) In the case of becomes unusual display from side S-video/AV mode Is Video input of the AV Jack (P1400) normal? Check the input source. Is normal the Input voltage, IICCommunication and HV sync? Yes No No Replace IC No Replace IC No Is normal the CXA2069Q? Yes Same as Block A (5) In the case of becomes unusual display from Component, RGB [...]

- 25 - (7) In the case of becomes unusual display from SCART1 mode Is Video input of A/V jack normal? (J1200) Yes Check the input source. No Same as Block A (8) In the case of becomes unusual display from SCART2 mode Is Video input of A/V jack normal? (J1201) Yes Check the input source. No Same as Block A Downloaded From TV-Manual.com Manuals[...]

- 26 - 5. In case of no sound (1) Symptom 1) LED is green. 2) Screen display but sound is not output (2) Check follow All input (mode) is no sound? Is the speaker On it men? Set on speaker in menu. Is the speaker Cable normal? Check the Speaker Cable IC1300 operates Normal? Replace IC1300 (MSP4450) IC1301 operates Normal? Replace IC1301 (STA335BW) [...]

- 27 - Common Interface L VDS 51P AV 1 DTV Out MNT Out RGB RS-232 PC AUDIO ST i5100 MPEG Decoder 1.2V 2.5V 3.3V 5V 8V FLI8548H-LF (CORTEZ Plus) Digital Video Processor 1.8V 2.5V 3.3V HDMI HDMI S/W 3.3V Power 3.3V ST 5V 12V 6V 19V R L CXA2069Q AUDIO/VIDEO SW 9V MSP4450K Sound Processor 9V 5V ST A333BW Audio IC 18V Bu[...]

MEMO - 28 - Downloaded From TV-Manual.com Manuals[...]

- 29 - 120 120 121 520 510 500 300 200 802 807 820 830 840 900 804 530 600 610 810 400 800 803 805 806 801 EXPLODED VIEW Downloaded From TV-Manual.com Manuals[...]

- 30 - EXPLODED VIEW P ARTS LIST No. PART NO. DESCRIPTION 120 EAB33775101 Speaker,Full Range, EN1562C-6712 ND 10W 8OHM 82DB 100HZ 193.5 X 42 X 39.9 LUG KOREA TOPTONE 121 EAB33893101 Speaker,Tweeter, EN10D-6714 ND 10W 8OHM 82DB 0HZ 68 X 23 X 22.7 LUG KOREA TOPTONE 200 EAJ37267701 LCD,Module-TFT, LC420WU2-SLB2 FULLHD 42.0INCH 1920X1080 550CD COLOR 72[...]

- 31 - A1 MFL36914902 "Manual,Owners" PRINTING USER PD75A LG A2 MKJ32022835 Remote Controller COMPLEX LD75A 47LB5DF- A21 3550V00590A Cover MOLD ABS BA TTERY TN-5 A3 6410TEW010A Power Cord "CEE,LP-34A&H05VV -FX3C," A4 341-746B Holder MOLD ABS CABLE Holder A6 SAC30033608 Title 60PY3DF-ZA CD MANUAL P C101 0CE107SF6DC "Capa[...]

- 32 - C1 0CH3104K566 "Capacitor ,Ceramic,Chip" 0805B104K500CT 100nF 1 C100 0CC101CK41A "Capacitor ,Ceramic,Chip" C1608C0G1H101JT 100pF C100 0CC101CK41A "Capacitor ,Ceramic,Chip" C1608C0G1H101JT 100pF C100 0CC470CK41A "Capacitor ,Ceramic,Chip" C1608C0G1H470JT 47pF 5 C1003 0CK103CK56A "Capacitor,Ceramic,C[...]

- 33 - C1342 0CK104CK56A "Capacitor,Ceramic,Chip" 0603B104K500CT 100nF 1 C1346 0CK474CH94A "Capacitor,Ceramic,Chip" 0603F474Z250CT 470nF - C1347 0CK474CH94A "Capacitor,Ceramic,Chip" 0603F474Z250CT 470nF - C135 0CK104CF56A "Capacitor ,Ceramic,Chip" 0603B104K160CT 100nF 1 C1351 0CK104CK56A "Capacitor,Ceram[...]

- 34 - C184 0CK104CF56A "Capacitor ,Ceramic,Chip" 0603B104K160CT 100nF 1 C185 0CK104CF56A "Capacitor ,Ceramic,Chip" 0603B104K160CT 100nF 1 C186 0CK104CF56A "Capacitor ,Ceramic,Chip" 0603B104K160CT 100nF 1 C187 0CK104CF56A "Capacitor ,Ceramic,Chip" 0603B104K160CT 100nF 1 C188 0CK103CK56A "Capacitor ,Ceram[...]

- 35 - C715 0CK104CK56A "Capacitor ,Ceramic,Chip" 0603B104K500CT 100nF 1 C716 0CK104CK56A "Capacitor ,Ceramic,Chip" 0603B104K500CT 100nF 1 C717 0CK104CK56A "Capacitor ,Ceramic,Chip" 0603B104K500CT 100nF 1 C718 0CK104CK56A "Capacitor ,Ceramic,Chip" 0603B104K500CT 100nF 1 C720 0CC120CK41A "Capacitor ,Ceram[...]

- 36 - C865 0CK104BF56A "Capacitor ,Ceramic,Chip" C1005X7R104KET 100nF 1 C866 0CK104BF56A "Capacitor ,Ceramic,Chip" C1005X7R104KET 100nF 1 C867 0CK104BF56A "Capacitor ,Ceramic,Chip" C1005X7R104KET 100nF 1 C868 0CK104BF56A "Capacitor ,Ceramic,Chip" C1005X7R104KET 100nF 1 C869 0CK104BF56A "Capacitor ,Ceram[...]

- 37 - IC502 0IMCRSJ001B "IC,LDO Voltage Regulator" SC1565IST -2.5TR 2.2TO5 IC503 0IPMGKE030A "IC,LDO V oltage Regulator" KIA78R05F 6TO12V 5V 8W IC504 0IPMGKE031A "IC,LDO V oltage Regulator" KIA78R33F 4TO10V 3.3V IC505 0IPMGKE031A "IC,LDO V oltage Regulator" KIA78R33F 4TO10V 3.3V IC900 0IPMGF A061A "IC,L[...]

- 38 - L1307 0LCTO00019A "Inductor ,Wire Wound,Chip" D75C-646CY -220M=P3 22U L600 0LCT A00003A "Inductor,Wire W ound,Chip" LEMC3225T6R8M 6.8UH 20 L601 0LCT A00003A "Inductor,Wire W ound,Chip" LEMC3225T6R8M 6.8UH 20 L605 0LCT A00003A "Inductor,Wire W ound,Chip" LEMC3225T6R8M 6.8UH 20 IC803 EBK32753101 FET SI49[...]

- 39 - R103 0RJ0472D677 "Resistor ,Chip" MCR03EZPJ470 47OHM 5% R103 0RJ2002D677 "Resistor ,Chip" MCR03EZPJ203. 20KOHM 5 R103 0RJ2203D677 "Resistor ,Chip" MCR03EZPJ224 220KOHM 5 R1038 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R1039 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R104 0RH9[...]

- 40 - R1215 0RJ1001D477 "Resistor,Chip" MCR03EZPF102 1KOHM 1% R1216 0RJ1001D477 "Resistor,Chip" MCR03EZPF102 1KOHM 1% R1219 0RJ0752D677 "Resistor,Chip" MCR03EZPJ750 75OHM 5% R122 0RJ0472D677 "Resistor ,Chip" MCR03EZPJ470 47OHM 5% R1220 0RJ2203D677 "Resistor,Chip" MCR03EZPJ224 220KOHM 5 R1221 0RJ075[...]

- 41 - R1357 0RJ0122D677 "Resistor,Chip" MCR03EZPJ120 12OHM 5% R1358 0RJ0122D677 "Resistor,Chip" MCR03EZPJ120 12OHM 5% R1359 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R136 0RJ0472C678 "Resistor ,Chip" MCR01MZPJ470 47OHM 5% R1360 0RJ0000D677 "Resistor,Chip" MCR03EZPJ000 0OHM 5% 1 R1361 0RJ00[...]

- 42 - R1728 0RJ0332D677 "Resistor,Chip" MCR03EZPJ330 33OHM 5% R1729 0RJ0332D677 "Resistor,Chip" MCR03EZPJ330 33OHM 5% R173 0RJ0472D677 "Resistor ,Chip" MCR03EZPJ470 47OHM 5% R1730 0RJ0332D677 "Resistor,Chip" MCR03EZPJ330 33OHM 5% R1731 0RJ0332D677 "Resistor,Chip" MCR03EZPJ330 33OHM 5% R1732 0RJ0332[...]

- 43 - R230 0RJ1000D677 "Resistor ,Chip" MCR03EZPJ101 100OHM 5% R231 0RJ1000D677 "Resistor ,Chip" MCR03EZPJ101 100OHM 5% R232 0RJ1000D677 "Resistor ,Chip" MCR03EZPJ101 100OHM 5% R233 0RJ1000D677 "Resistor ,Chip" MCR03EZPJ101 100OHM 5% R234 0RJ1000D677 "Resistor ,Chip" MCR03EZPJ101 100OHM 5% R235 0RJ[...]

- 44 - R670 0RH0000D622 "Resistor,Chip" MCR10EZHJ000 0OHM 5% 1 R671 0RH0000D622 "Resistor,Chip" MCR10EZHJ000 0OHM 5% 1 R672 0RJ0000D677 "Resistor ,Chip" MCR03EZPJ000 0OHM 5% 1 R673 0RH0000D622 "Resistor,Chip" MCR10EZHJ000 0OHM 5% 1 R674 0RH0000D622 "Resistor,Chip" MCR10EZHJ000 0OHM 5% 1 R675 0RH0000[...]

- 45 - R810 0RJ1001D677 "Resistor ,Chip" MCR03EZPJ102 1KOHM 5% R81 1 0RJ0222D677 "Resistor,Chip" MCR03EZPJ220 22OHM 5% R812 0RJ1002D677 "Resistor ,Chip" MCR03EZPJ103 10KOHM 5% R813 0RJ0222C678 "Resistor ,Chip" MCR01MZPJ220 22OHM 5% R816 0RJ0000D677 "Resistor ,Chip" MCR03EZPJ000 0OHM 5% 1 R818 0RJ100[...]

- 46 - C15 EAD36184801 "Harness,Single" SMH250 SMH250 400MM 2. C16 EAD36608901 "Harness,Single" SMH200-12P SMH200-12PL C3 6631900010N "Harness,Single" 12P 2.0MM 900MM SMH200 C4 6631900012C "Harness,Single" SMH250 SMH250 200mM 2. C5 6631900027C "Harness,Single" SMH250 SMH250 200mM 2. C6 6631900049D &[...]

3V3 3.3V 1.2V 1V2 1V2 1.2V 1.2V 1.2VA 2V5 3V3 2V5 3V3 3V3 1V2 1.2VA 3.3V 1.2VA 3V3 3V3 1V25 1.2VA 3V3 3V3 2.5V I2C_SDA0 004:C5 FMI_D[0-15] I2C_SDA1 003:I1 LDD[0-15] 002:K3 PIO2B6 004:A7 I2C_SCL1 003:I1 LDCAS 002:K4 PIO2B7 004:A8 I2C_SCL0 004:C5 FMILBA 003:J4 OUT_LEFT 005:H8 LDDQM0 002:K4 FMIBE1 003:K5 TS_SEL 003:B4;004:F4 LDCLKN 002:K5 CPU_RST 001:[...]

CVBS 001:L5 DTV_LOUT 013:C5 DTV_ROUT 013:C4 DTV_AUDIO_MUTE_BUF 001:F8 P_6.0V 2.5V 1.8V P_3.3V 5.0V 3.3V P_3.3V 1.2V P_3.3V P_6.0V 1K R523 100 R547 100 R548 2K R527 2K R526 9.31K R522 1% 470uF C524 16V 220uF C528 16V 220uF C534 16V 0.1uF C518 0.1uF C529 0.1uF C530 0.1uF C521 0.1uF C525 0.1uF C537 0.1uF C539 0.1uF C516 0.1uF C526 0.1uF C532 0.1uF C53[...]

FAN_VCC P_12V JP913 P_3.3V P_12V JP910 0.1uF C931 JP912 0.1uF C932 JP911 0.1uF C934 P_6.0V 0.1uF C933 JP909 P_+19V 100uF 16V C937 +5V_MSP4450 0.1uF C935 0.47uF C955 MVK 100uF 16V C969 100uF 16V C959 +5VST 2SC3875S Q903 1 2 3 AC_DET 008:J5 4.7K R927 2SC3875S Q902 1 2 3 2SC3875S Q901 1 2 3 +5VST 100uF 16V C971 0.01uF C909 100uF 16V C958 0.1uF C962 AZ[...]

100pF C1333 +5V_MSP4450 0.01uF C1312 43 R1304 100 R1314 22uF 16V C1313 0.01uF C1330 100 R1309 2SC3875S Q1300 PCMDATA_MUX 43 R1305 COMP_RIN 0 R1310 0.01uF C1322 0.47uF C1321 10uF 25V C1344 3.3uF 50V C1341 100 R1308 SIF +9V_MSP4450 LRCLK_MUX 22uF 16V C1325 OPT C1324 0.01uF C1340 470pF C1338 0.47uF C1320 24K R1301 RLZ8.2B-TE11 ZD1300 PC_AUDIO_R 0.47uF[...]

Apr., 2007 Printed in Korea P/NO : MFL36631016 Downloaded From TV-Manual.com Manuals[...]