LG 37LC2D Series Service Manual Download Page 36 | Manualshive

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Summary of Contents for 37LC2D Series

Page 1: ...ICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LT61A FACTORY NAME 37LC2D DA MODEL 37LC2D website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 TROUBLE SHOOTING 13 BLOCK DIAGRAM 16 EXPLODED VIEW 18 REPLACEMENT PARTS LIST 20 SVC SHEET ...

Page 3: ...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 ...

Page 4: ...vely 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 unit under test 2 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 3 Use only a ground...

Page 5: ...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 boa...

Page 6: ...th BOM 5 The receiver must be operated for about 20 minutes prior to the adjustment 3 Test method 3 1 Performance LGE TV test method followed 3 2 Demanded other specification Safety CNS Specification EMC CNS Specification 4 General Specification No Item Specification Remark Min Typ Max Unit 1 Broadcasting system Analog NTSC M DTV DVB T 2 Available Channel 1 VHF 2 13 2 UHF 14 69 3 CATV 1 125 4 DTV ...

Page 7: ...0i 2 720 480 31 47 31 50 59 94 60 00 27 00 SDTV 480p 3 1280 720 44 96 45 00 59 94 60 00 74 25 HDTV 720P 4 1920 1080 33 72 33 75 59 94 60 0 74 25 HDTV 1080i 7 RGB HDMI DVI input DTV PC No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks DTV 1 720 480 31 47 31 50 59 94 60 00 27 00 SDTV 480p 2 1280 720 44 96 45 00 59 94 60 00 74 25 HDTV 720P 3 1920 1080 33 72 33 75 59 94 60 0 74 25 HDTV 1080i...

Page 8: ... 267 2 m Storage Shipment 0 40 000 feet 12 192 0 m 13 Lamp Life Time 50 000 min Hrs 25 2 C No Parameter Symbol Value Unit Remark Min Typ Max 1 Contrast Ratio CR 600 1 800 1 It measured at center point CR with AI 1200 1 1600 1 2 Surface Luminance 400 500 Cd m2 Full white white 3 Luminance Variation 1 3 d white 5P 4 Response Time Tr Rising time 8 14 msec 5 Color coordinate RED X Typ 0 640 Typ Full P...

Page 9: ...ed 4 2 Adjustment of Component Required Equipments l Remote controller for adjustment l MSPG 925F Pattern Generator e Model 217 Pattern 33 Which has 720p YPbPr output Pattern shown in Fig 2 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF 00 1E 6D 00 00 01 01 01 01 10 00 10 01 03 68 52 2F 96 EA D9 B0 A3 57 49 9C 25 20 11 49 4B AF CE 00 31 4F 45 4F 61 4F 01 01 01 01 30 01 01 ...

Page 10: ...nt is completed Before White balance the AV ADC should be done Notice Before White balance change input mode Move to VIDEO1 by using Remote controller 5 White Balance Caution System control RS 232 Host should be PC for adjustment VIDEO ADC VIDEO1 should be done before White balance Press FRONT AV on control R C before Automatic Adjustment Test Equipment Color Analyzer CA 110 PC for communication t...

Page 11: ...DTV 4 Main Last Channel 5 Mute Off 6 Screen Size Auto 7 Station Auto Program Manual Program Favorite Channel None 8 Picture EZ PICTURE Clear Clear Contrast 100 Brightness 45 Color 50 Sharpness 50 Tint 0 Activate depend on Color sys ACC Cool XD On ACM Fleshtone 1 Greentone 1 Bluetone 1 No Item Condition Remark 9 Sound EZ SOUND FLAT AVL Off Balance 0 Treble 50 Bass 50 TV Speaker On 10 Timer Clock AM...

Page 12: ...k the front AV To move channel up down or to select a function displayed on the screen To adjust the volume or accurately control a specific function To set a specific function or complete setting To move the channel down in the PIP screen To use as a red key in the teletext mode To move the channel in the PIP screen To use as a green key in the teletext mode To switch between the main and sub scr...

Page 13: ...POWER INDICATOR OFF REPLACE POWER BOARD CHECK POWER BOARD CHECK CN804 VOLTAGE P ST_5V No CHECK CRYSTAL X800 CHECK CRYCTAL X800 19 6608MHZ No Yes CHECK IC806 CHECK IC806 VOLTAGE 5V No Yes CHECK Q1001 CHECK Power on off 5V No Yes Yes ...

Page 14: ...PLACE LCD MODULE CHECK THE PERIPHERAL IC800 CHECK LVDS Output P3 PIN 21 PIN 22 No CHECK THE PERIPHERAL IC1 DOWN LOAD ISP DATA or REPLACE MAIN BOARD Check L2 12V No Yes CHECK L1022 24V CHECK R898 3 3V No Yes Yes Yes No ...

Page 15: ...CABLES WELL IS THE SPK CABLE CONNECTED WELL No CHECK IC302 OR CHANGE DOES IC302 OPERATE No Yes CHECK IC301 OR CHANGE DOES IC301 OPERATE No Yes CHECK X300 OR CHANGE DOES IC300 OPERATE DOES IC400 OPERATE No Yes Yes Yes CHECK X400 OR CHANGE No ...

Page 16: ... from Digital Module RX TX_STI D_COMP_YPbPr LVDS 31P MODULE_ON OFF DISP_EN RGB SDA COMP1_Rear Y Pb Pr V V Y C AV1_Rear AV2_Side Monitor out_Rear S Video Rear TU_Main_CVBS MAIN_V Y MAIN_DE SYNC_DE SUB_V Y C RGB_Rear RGB CVBS RX TX RX TX_HUDSON RX TX_STI 24Bit_B 12C UART DTuner 12C ATuner STC3232 CM2021 CAT24WC02 74F14SCX CAT24WC02 LA7217 TC74LCX157 24C32 24C256 HY5DU281622 FLI8125AA LP HUDSON 0X6C ...

Page 17: ... 3 3V 1 8V 5V 9V 3 3V 2 5V 1 8V 3 3V 2 5V HY5DU281622 MX 29LV16 FLI8532 Cortez Audio Decoder MSP4410K Audio SW Tone Control 0X80 CAX2069 A V SW 0X09 Sil9011 TMDS Rx HDCP 0X62 Sound Control NSP 2100A PWM MOD 0X6C TAS5112 Digital Amp HY5DU281622 19V ...

Page 18: ... 18 010 050 051 020 100 110 120 140 140 030 060 070 080 090 150 160 040 EXPLODED VIEW ...

Page 19: ...68719ST934A PCB Assembly Sub SUB T T LP61A 26LC2R ZJ LOCAL EBR30716801 PCB Assembly SUB S T LT61A 37LC2D DA Taiwan IR main assy 4950TKA361Q Plate FRAME MAIN 37LC2D DA 6709900016D SMPS AC DC LGLP2637HEP 90 0VTO264 0V 215W 47TO63HZ UL CSA SEMKO YY AT HE or 6709900016B Power Supply Assembly FREE H3 E2 LCD MODEL LCD LG ELECTRONICS LB LC 37INCH 31419MNV37A Chassis Assembly MAIN LT61A TAIWAN DTV 37LC2D ...

Page 20: ...20 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C1148 0CE477WF6DC MVK10TP16VC470M 470uF 20 1 C1151 0CE107WF6DC MVK6 3TP16VC100M 100uF 20 C1152 0CE107WF6DC MVK6 3TP16VC100M 100uF 20 C1157 0CE107WF6DC MVK6 3TP16VC100M 100uF 20 C1158 0CE107WF6DC MVK6 3TP16VC100M 100uF 20 C1161 0CE476WF6DC MVK6 3TP16VC47M 47uF 20 16 C1168 0CE476WF6DC MVK6 3TP16VC47M 47uF 20 16 C1170 0CE107WF6DC MVK6 3...

Page 21: ... C2012Y5P1H103KT 10nF 10 50 C1032 0CH3104K566 0805B104K500CT 100nF 10 50 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C1036 0CH3104K566 0805B104K500CT 100nF 10 50 C1038 0CH3104K566 0805B104K500CT 100nF 10 50 C1039 0CH3103K516 C2012Y5P1H103KT 10nF 10 50 C1041 0CH3104K566 0805B104K500CT 100nF 10 50 C1043 0CH3104K566 0805B104K500CT 100nF 10 50 C1044 0CH3103K516 C2012Y5P1H103KT 10nF 1...

Page 22: ...F 10 50 C1225 0CH3104K566 0805B104K500CT 100nF 10 50 C1226 0CH3104K566 0805B104K500CT 100nF 10 50 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C1227 0CH3104K566 0805B104K500CT 100nF 10 50 C1228 0CH3104K566 0805B104K500CT 100nF 10 50 C1229 0CH3104K566 0805B104K500CT 100nF 10 50 C123 0CH3103K516 C2012Y5P1H103KT 10nF 10 50 C1232 0CH3104K566 0805B104K500CT 100nF 10 50 C1234 0CH3104K56...

Page 23: ...H3103K516 C2012Y5P1H103KT 10nF 10 50 C350 0CH3104K566 0805B104K500CT 100nF 10 50 C353 0CH3104K566 0805B104K500CT 100nF 10 50 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C354 0CH3104K566 0805B104K500CT 100nF 10 50 C355 0CH3104K566 0805B104K500CT 100nF 10 50 C356 0CH3104K566 0805B104K500CT 100nF 10 50 C357 0CH3104K566 0805B104K500CT 100nF 10 50 C358 0CH2333K516 0805B333K500CT 33nF ...

Page 24: ...0CH3104K566 0805B104K500CT 100nF 10 50 C929 0CH3103K516 C2012Y5P1H103KT 10nF 10 50 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C931 0CH3104K566 0805B104K500CT 100nF 10 50 C932 0CH3103K516 C2012Y5P1H103KT 10nF 10 50 C933 0CH3104K566 0805B104K500CT 100nF 10 50 C934 0CH3103K516 C2012Y5P1H103KT 10nF 10 50 C935 0CH3104K566 0805B104K500CT 100nF 10 50 C936 0CH3103K516 C2012Y5P1H103KT 10...

Page 25: ... D1005 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION D1006 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N D1009 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N D1014 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N D601 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N D602 0DS226009AA KDS226 1 2V 85V 300MA 2A 4N D201 0DS113379BA 1SS133 1 2V 90V 400MA 600MA D100 0DS226009AA K...

Page 26: ...M 2X1 25 L3009 6210TCE001S HU 1M2012 121 120OHM 2X1 25 L301 6210TCE001G HH 1M3216 501JT 500OHM 3 2X L3010 6210TCE001S HU 1M2012 121 120OHM 2X1 25 DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION L302 6210TCE001G HH 1M3216 501JT 500OHM 3 2X L308 6210TCE001G HH 1M3216 501JT 500OHM 3 2X L309 6210TCE001G HH 1M3216 501JT 500OHM 3 2X L314 6210TCE001G HH 1M3216 501JT 500OHM 3 2X L315 6210TCE...

Page 27: ...002D622 MCR10EZHJ103 10KOHM 5 1 8W DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1020 0RH4701D622 MCR10EZHJ472 4 7KOHM 5 1 8 R1021 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W R1022 0RH1001D622 MCR10EZHJ102 1KOHM 5 1 8W R1028 0RH0222D622 MCR10EZHJ220 22OHM 5 1 8W R107 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R109 0RH2201D622 MCR10EZHJ222 2 2KOHM 5 1 8 R110 0RH1002D622 MCR10EZHJ103 10KOHM 5...

Page 28: ...D622 MCR10EZHJ2R2 2 2OHM 5 1 8W R353 0RH0221D622 MCR10EZHJ2R2 2 2OHM 5 1 8W R354 0RH0221D622 MCR10EZHJ2R2 2 2OHM 5 1 8W DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R355 0RH4701D622 MCR10EZHJ472 4 7KOHM 5 1 8 R356 0RH1000D622 MCR10EZHJ101 100OHM 5 1 8W R359 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R360 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R361 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8...

Page 29: ...0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R162 0RH1800D622 MCR10EZHJ181 180OHM 5 1 8W DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R163 0RH6202D622 MCR10EZHJ623 62KOHM 5 1 8W R164 0RH2201D622 MCR10EZHJ222 2 2KOHM 5 1 8 R165 0RH0822D622 MCR10EZHJ820 82OHM 5 1 8W R1804 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R1805 0RH2702D622 MCR10EZHJ273 27KOHM 5 1 8W R1806 0RH0000D622 MCR10EZHJ000 0OHM 5...

Page 30: ... MCR10EZHJ000 0OHM 5 1 8W 2 R468 0RH0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R6 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R606 0RH4701D622 MCR10EZHJ472 4 7KOHM 5 1 8 R607 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R608 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R609 0RH1000D622 MCR10EZHJ101 100OHM 5 1 8W R610 0RH1000D622 MCR10EZHJ101 100OHM 5 1 8W R619...

Page 31: ...H0000D622 MCR10EZHJ000 0OHM 5 1 8W 2 R929 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R930 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R932 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R933 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W R934 0RH1002D622 MCR10EZHJ103 10KOHM 5 1 8W DATE 2006 07 04 S AL LOC NO PART NO DESCRIPTION SPECIFICATION X300 6202VDT002H SX 1 18 432MHZ 30PPM 18 432 X600 6212AB2845A ABLS 27 000MHZ 16 B...

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Page 37: ...Jul 2006 Printed in Korea P NO MFL30105536 ...

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