LG 37HIZ22 Service Manual Download Page 2

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LGE Internal Use Only

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CONTENTS

CONTENTS............................................................................................... 2

SAFETY PRECAUTIONS ..........................................................................3

SPECIFICATION ........................................................................................6

ADJUSTMENT INSTRUCTION................................................................11

TROUBLE SHOOTING ............................................................................16

BLOCK DIAGRAM...................................................................................22

EXPLODED VIEW....................................................................................24

EXPLODED VIEW PARTS LIST ..............................................................25

REPLACEMENT PARTS LIST ................................................................26

SVC. SHEET ................................................................................................

Summary of Contents for 37HIZ22

Page 1: ...R LCD TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LP62F MODEL 37HIZ22 37LC2RHA ZH website http biz LGservice com Internal Use Only ...

Page 2: ... for training and service purposes LGE Internal Use Only 2 CONTENTS CONTENTS 2 SAFETY PRECAUTIONS 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 11 TROUBLE SHOOTING 16 BLOCK DIAGRAM 22 EXPLODED VIEW 24 EXPLODED VIEW PARTS LIST 25 REPLACEMENT PARTS LIST 26 SVC SHEET ...

Page 3: ...fe 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 term...

Page 4: ... 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 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...

Page 5: ...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 replac...

Page 6: ...manded other specification Safety CE IEC Specification EMC CE IEC SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General TV Specification No Item Specification Remark 1 Video input applicable system PAL D K B G I NTSC M SECAM NTSC 4 43 2 Receivable Broadcasting System 1 PAL SECAM BG 2 PAL SECAM DK 3 PAL I I 4 SECAM L L only ZH 5 PAL N M 6 NTSC M...

Page 7: ...ure 5 Reset 4 Component Jack Y Pb Pr 1EA ZH 480i 576i 480p 576p 720p 1080i Y Pb Pr 2EA TH 5 Power ON LED Power consumption White 140W 32 190W 37 250W 42 Stand by BRAND RED 1W COMMERCIAL RED 2W 6 LCD Module Outline 32 760 0 x450 0 x 48 0 Dimension 37 877 0 x 516 8 x 55 5 H mmx V mmx D mm 42 1006 x 610 x 56 Pixel Pitch 32 0 1702 x0 5107 x RGB 37 0 200 x 0 600 x RGB 42 0 227 x 0 681 x RGB Pixel Forma...

Page 8: ... 4 EA PC Audio Component 1EA AV 2EA L R Input 12 Wired Control 1EA 13 Speaker out 1EA Stereo Phone Jack 14 RJP Interface 1EA RJ 45 jack interface for RJP RJP Remote Jack Pack 7 Component Video Input Y PB PR No Resolution H freq kHz V freq kHz Pixel clock MHz Remarks 1 720 x 480 15 73 59 94 13 500 SDTV DVD 480I 525I 2 720 x 480 15 75 60 00 13 514 SDTV DVD 480I 525I 3 720 x 576 15 625 50 00 13 500 S...

Page 9: ... 1 720 x 480 31 47 59 94 27 000 SDTV 480P 2 720 x 480 31 50 60 00 27 027 SDTV 480P 3 720 x 576 31 25 50 00 27 000 SDTV 576P 4 1280 x 720 44 96 59 94 74 176 HDTV 720P 5 1280 x 720 45 00 60 00 74 250 HDTV 720P 6 1280 x 720 37 50 50 00 74 25 HDTV 720P 50Hz 7 1920 x 1080 33 72 59 94 74 176 HDTV 1080I 8 1920 x 1080 33 75 60 00 74 250 HDTV 1080I 9 1920 x 1080 28 125 50 00 74 250 HDTV 1080I 50Hz 10 HDMI ...

Page 10: ... 74 25 HDTV 720P 50Hz 7 1920 x 1080 33 72 59 94 74 176 HDTV 1080I 8 1920 x 1080 33 75 60 00 74 250 HDTV 1080I 9 1920 x 1080 28 125 50 00 74 250 HDTV 1080I 50Hz No Item Content Remark 1 Product Width Length Height Unit Dimension Before Packing 944 286 729 mm SET With Stand After Packing 1052 383 858 mm 2 Product Weight Only SET 29 5 Kg With BOX 35 5 Kg 3 Container Loading Individual or 20ft 40ft Qu...

Page 11: ...tion line c Month Year Controlled on production line ex Monthly 03 03 Year 2005 0F d Model Name Monitor Name e Checksum Changeable by total EDID data 11 ADJUSTMENT INSTRUCTION 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00 00 FF FF FF FF FF FF FF 1E 6D 10 01 03 80 46 27 78 EA D9 B0 A3 57 49 9C 25 20 11 49 4B A5 6E 80 31 40 01 01 01 01 45 40 01 01 30 61 40 01 01 01 01 1B 21 50 A0 51 00 1E 30 48...

Page 12: ... Auto Component Color Balance 1 Input the Component 720p 100 Color Bar MSPG 925FA model 217 pattern 33 signal into Component ZH component TH MH component 1 or 2 2 Set the PSM to Standard mode in the Picture menu 3 Press the INSTART key on remote control for adjustment 4 Press the G Vol key to operate the set then it becomes automatically 5 Auto RGB OK means the adjustment is completed 5 3 Adjustme...

Page 13: ...and service purposes LGE Internal Use Only Fig 2 216 Level 85IRE Command1 Command2 Set ID Data Min Max Input Select XB B 00 00h 90h R Gain J A 00 00h E0h G Gain J B 00 00h E0h B Gain J C 00 00h E0h R Offset J D 00 00h 90h G Offset J E 00 00h 90h B Offset J F 00 00h 90h Command1 Command2 Set ID Data Min Max Input Select XB B 00 00h 90h R Gain J A 00 00h E0h G Gain J B 00 00h E0h B Gain J C 00 00h E...

Page 14: ... 0 3F 0 3F 01 0 C7 0 C7 F0 Min 00 Max fe Min 00 Max fe 0 0 3F 3F FF the state marking 0 0 3F 3F FF the state marking 0 0 3F 3F FF the state marking 0 0 3F 3F FF the state marking 0 0 3F 3 FF the state marking 0 0 3F 3F FF the state marking If Auto Adjust Condition is not send the NACK 0 Pr 0 C7 Pr 199 0 Pr 0 C7 Pr 199 IR CODE 0 BITMASK 0X01 Initial data red 0x79 blue 0x6f green 0x80 Initial data r...

Page 15: ...rogramme Manual Programme Programme Edit Favorite Programme None 8 Picture PSM Dynamic Dynamic Contrast 100 Brightness 50 Colour 50 Sharpness 50 CSM Normal XD Auto Advanced Reset 9 Sound SSM Flat Off AVL Off Balance 0 50 50 Speaker On 10 Time Clock User control Off time Off On time Off Auto sleep Off 11 Special Language English Area management Child Lock Off Set ID 1 XD Demo To start 12 Screen Aut...

Page 16: ... circuit Yes Yes No No No Yes No 11 Check the Y B D Module output circuit Yes No Yes No No No Doesn t the screen whole come out It is identical with power off condition Is the Interface signal operated Doesn t the 5V monitor signal come out Doesn t the VSC signal RL_ON come out Doesn t the VSC Low pressure output come out Doesn t the Vs Va voltage output come out Doesn t the St by 5V signal come o...

Page 17: ... 2 Check follow Is the Power Cord plug in Plug in Power Cord No No No No Yes Is the Line Filter and PSU connected Connect Cable SC100 Yes Is the Fuse F100 of PSU is normal Replace Fuse Yes Is it connect that PSU and 13Pin cable in VSC board After remove the cable connect to Power Board except the CN101 connection cable authorizes the AC voltage marking on manual When ST BY 5V does not operate repl...

Page 18: ...rd Off No Is the inverter 24V on power board normal No No No No Is output the normality Low High voltage except stand by 5V No Inverter_On Signal is High of 5th pin in P1000 on Main board Yes On Yes Is the link cable normal 1 Check the Inverter connector 2 Check the LCD Module Yes 1 Check the Main Board 1 Reconnect the link cable in P804 No 1 Check the Main board 1 Change the Power Board 1 Change ...

Page 19: ...e normal Is the LVDS cable connected well Replace cable Replace VSC B D No No Yes Replace Ctrl Board in Plasma panel No Replace LCD Module No Yes Yes Is the LCD Module normal Yes Plasma LCD TV No Cable inserts well No Replace FIL8668 IC IC800 2 3 In case of occur strange screen into specific mode 2 3 1 In case of doesn t display the OSD 1 Symptom 1 LED is White 2 The minute discharge work continuo...

Page 20: ...al situation from RF mode Is the Tuner normal No Yes Yes Cable inserts well Replace Tuner Replace IC300 No No No No No Is the IC300 normal Replace IC800 No No Is the IC800 normal Is the Tuner Cable connected well Is normal the Input voltage IIC Communication and CVBS output Is the Input voltage IIC Communication and HV sync normal Is the Input voltage IIC Communication and HV sync normal Yes Repla...

Page 21: ...voltage IIC Communication and HV sync normal 2 4 In case of no sound 1 Symptom 1 LED is White 2 Screen existent but Sound isn t 2 Check follow No No No All input mode is no sound Only HDMI is no sound Only AV input is no sound Replace IC400 Replace IC401 Replace IC300 Replace VSC B D Set on speaker in menu Download the EDID data Check the speaker cable No Only RF is no sound Check the Tuner In Out...

Page 22: ...RIN LIN TV_L R OUT S AV COMP_Y Pb Pr A V AVIN4_RIN LIN TPA3100 AV_LR SUB_V o r Y C OUT MAIN_V o r Y C OUT 31P_LVDS Tx0 1 2 3 4 C DISP_EN SCL SDA_Part HY5DU281622ETP DDRRAM 128MB X2 AT49BV160C F ROM 2MB V_OUT1 Y_IN1 L_SPK_OUT L SPK_OUT I 2 S 24C02 I 2 C I 2 C I 2 C HDMI_L R RX 0 1 2 CLK HDMI PC DTV SCART1 SCART2 SCART1 2_RIN LIN SCART1 2_ID DS_VS DS_HS SCART_RGB FB SCART_RGB FB SIL9011 24C02 HDMI H...

Page 24: ...pyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 24 EXPLODED VIEW 300 200 800 810 811 530 510 500 820 120 520 540 830 610 600 840 400 900 910 ...

Page 25: ... ZH 530 EBR35302901 PCB Assembly Sub SUB T T LP62F 37LC2RHA ZH AEULLHX Side AV for DMS COMMERCIAL 540 6200J000151 Filter AC Line ID N06AESL6 1 3mH 250VAC 6A 0 1uF 1000pF UL CSA TUV HOUSING RING BK DONGJI ELECTRONICS 600 6709900016D SMPS AC DC LGLP2637HEP 37INCH 90VTO264V 215W 47TO63HZ UL CSA SEMKO YY AT HE YUYANG TELECOM CO LTD 610 EBU35295203 Main Total Assembly 37LC2RHA BRAND LP62F 800 MGJ321115...

Page 26: ...VC100M 100uF C1135 0CE476WF6DC Capacitor AL Chip MVK6 3TP16VC47M 47uF 2 C1137 0CE476WF6DC Capacitor AL Chip MVK6 3TP16VC47M 47uF 2 C1146 0CE476WF6DC Capacitor AL Chip MVK6 3TP16VC47M 47uF 2 C1147 0CE107WF6DC Capacitor AL Chip MVK6 3TP16VC100M 100uF C1149 0CE107WF6DC Capacitor AL Chip MVK6 3TP16VC100M 100uF C1151 0CE107WF6DC Capacitor AL Chip MVK6 3TP16VC100M 100uF C1152 0CE107WF6DC Capacitor AL Ch...

Page 27: ...hip 0603F474Z250CT 470nF C1002 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C1003 0CK474CH94A Capacitor Ceramic Chip 0603F474Z250CT 470nF C1004 0CK103CK56A Capacitor Ceramic Chip 0603B103K500CT 10nF 10 C1006 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C1006 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C1008 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 1...

Page 28: ...CT 100nF 1 C1215 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C1216 0CK102CK56A Capacitor Ceramic Chip 0603B102K500CT 1nF 10 C1217 0CK102CK56A Capacitor Ceramic Chip 0603B102K500CT 1nF 10 C1218 0CK102CK56A Capacitor Ceramic Chip 0603B102K500CT 1nF 10 C1219 0CK102CK56A Capacitor Ceramic Chip 0603B102K500CT 1nF 10 C122 0CC331CK41A Capacitor Ceramic Chip C1608C0G1H331JT 330pF C1220 0CK10...

Page 29: ...c Chip C1608C0G1H100JT 10pF 5 C2008 0CK103CK56A Capacitor Ceramic Chip 0603B103K500CT 10nF 10 C201 0CH5330K416 Capacitor Ceramic Chip C2012C0G1H330JT 33pF 5 C2010 0CH5221K416 Capacitor Ceramic Chip 0805N221J500LT 220pF 5 C2011 0CH5221K416 Capacitor Ceramic Chip 0805N221J500LT 220pF 5 C2020 0CK104DK56A Capacitor Ceramic Chip 0805B104K500CT 100nF 1 C219 0CC820CK41A Capacitor Ceramic Chip C1608C0G1H8...

Page 30: ...6A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C560 0CC470CK41A Capacitor Ceramic Chip C1608C0G1H470JT 47pF 5 C562 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C563 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C600 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C800 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C803 0CK104CK56A Capacitor Ceramic C...

Page 31: ...nF 10 C922 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C923 0CK103CK56A Capacitor Ceramic Chip 0603B103K500CT 10nF 10 C924 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C925 0CK103CK56A Capacitor Ceramic Chip 0603B103K500CT 10nF 10 C926 0CK104CK56A Capacitor Ceramic Chip 0603B104K500CT 100nF 1 C927 0CK103CK56A Capacitor Ceramic Chip 0603B103K500CT 10nF 10 C928 0CK104CK56A...

Page 32: ... Diode Zener UDZS5 1B 5 1V 4 98TO5 ZD2202 0DZRM00178A Diode Zener UDZS5 1B 5 1V 4 98TO5 ZD2203 0DZRM00178A Diode Zener UDZS5 1B 5 1V 4 98TO5 ZD2204 0DZRM00178A Diode Zener UDZS5 1B 5 1V 4 98TO5 ZD400 0DZRM00248A Diode Zener RLZ8 2B 8 2V 7 78TO8 1 IC2002 0IZZ9H9051A IC Assembly PIC16F819 I SO 0IMCR02 IC300 0ISO206900A IC Analog Switch CXA2069Q 8 5TO9 5V IC411 0IPRP00700A IC Audio Amplifier TPA3100D...

Page 33: ...1M3216 501JT 500OHM L2001 6210TCE001G Filter Bead HH 1M3216 501JT 500OHM L2002 6210TCE001G Filter Bead HH 1M3216 501JT 500OHM L205 6210TCE001G Filter Bead HH 1M3216 501JT 500OHM L2200 0LCML00003B Filter Bead MLB 201209 0120P N2 12 L2201 0LCML00003B Filter Bead MLB 201209 0120P N2 12 L2202 0LCML00003B Filter Bead MLB 201209 0120P N2 12 L308 6210TCE001G Filter Bead HH 1M3216 501JT 500OHM L309 6210TC...

Page 34: ...01 0TR387500AA TR Bipolar 2SC3875S ALY NPN 5V 6 Q800 0TR102009AJ TR Bipolar KRC102S NPN 30V 0V 50V Q801 0TR150400BA TR Bipolar 2SA1504S ASY PNP 5V AR1200 0RJ1000C687 Resistor Array RCA86TRJ100R 100OHM 5 AR1201 0RJ1000C687 Resistor Array RCA86TRJ100R 100OHM 5 AR1202 0RJ1000C687 Resistor Array RCA86TRJ100R 100OHM 5 AR1203 0RJ1000C687 Resistor Array RCA86TRJ100R 100OHM 5 AR1204 0RJ1000C687 Resistor A...

Page 35: ...HM 5 R1224 0RJ1000D677 Resistor Chip MCR03EZPJ101 100OHM 5 R1226 0RJ0122D677 Resistor Chip MCR03EZPJ120 12OHM 5 R1227 0RJ0122D677 Resistor Chip MCR03EZPJ120 12OHM 5 R1228 0RJ0122D677 Resistor Chip MCR03EZPJ120 12OHM 5 R1229 0RJ0122D677 Resistor Chip MCR03EZPJ120 12OHM 5 R123 0RJ2203D677 Resistor Chip MCR03EZPJ224 220KOHM 5 R1230 0RJ0122D677 Resistor Chip MCR03EZPJ120 12OHM 5 R1231 0RJ0122D677 Resi...

Page 36: ...1810 0RJ4701D677 Resistor Chip MCR03EZPJ472 4 7KOHM 5 R1816 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R1817 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R1818 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R182 0RJ0752D677 Resistor Chip MCR03EZPJ750 75OHM 5 R1828 0RJ1000D677 Resistor Chip MCR03EZPJ101 100OHM 5 R1829 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R1829 0RJ0000D677 Resist...

Page 37: ... 470OHM 5 R219 0RJ0822D677 Resistor Chip MCR03EZPJ820 82OHM 5 R220 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R2200 0RJ0222D677 Resistor Chip MCR03EZPJ220 22OHM 5 R2201 0RJ0222D677 Resistor Chip MCR03EZPJ220 22OHM 5 R2202 0RJ0222D677 Resistor Chip MCR03EZPJ220 22OHM 5 R2203 0RJ0222D677 Resistor Chip MCR03EZPJ220 22OHM 5 R2204 0RJ1000D677 Resistor Chip MCR03EZPJ101 100OHM 5 R2205 0RJ1000D677 R...

Page 38: ...0 0OHM 5 1 R408 0RJ2001D677 Resistor Chip MCR03EZPJ202 2KOHM 5 R409 0RJ0432D677 Resistor Chip MCR03EZPJ430 43OHM 5 R410 0RJ0622D677 Resistor Chip MCR03EZPJ620 62OHM 5 R411 0RJ2402D677 Resistor Chip MCR03EZPJ243 24KOHM 5 R412 0RJ1501D677 Resistor Chip MCR03EZPJ152 1 5KOHM 5 R413 0RJ4700D677 Resistor Chip MCR03EZPJ471 470OHM 5 R416 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R417 0RJ0000D677 Res...

Page 39: ...MCR03EZPJ272 2 7KOHM 5 R819 0RJ0000D677 Resistor Chip MCR03EZPJ000 0OHM 5 1 R820 0RJ4701D677 Resistor Chip MCR03EZPJ472 4 7KOHM 5 R821 0RJ5601D677 Resistor Chip MCR03EZPJ562 5 6KOHM 5 R822 0RJ4701D677 Resistor Chip MCR03EZPJ472 4 7KOHM 5 R823 0RH0202D622 Resistor Chip MCR10EZHJ200 20OHM 5 R825 0RH0202D622 Resistor Chip MCR10EZHJ200 20OHM 5 R827 0RH0202D622 Resistor Chip MCR10EZHJ200 20OHM 5 R829 0...

Page 40: ...Resistor Chip MCR01MZPJ680 68OHM 5 R976 0RJ2700C678 Resistor Chip MCR01MZPJ271 270OHM 5 R977 0RJ2700C678 Resistor Chip MCR01MZPJ271 270OHM 5 R1890 0RS0470K607 Resistor Metal Oxide Film RSD02T3JR470 0 47OHM 5 R1891 0RS0470K607 Resistor Metal Oxide Film RSD02T3JR470 0 47OHM 5 X1200 6202TST001H Crystal SX 1 27MHZ 30PPM 27MHZ X400 156 A02M Crystal HC 49 U 18 432MHZ 30PP X800 6212AB2015J Crystal HC 49S...

Page 41: ... Single SMH200 4P SMH200 4P 20 C6 6631900050C Harness Single SMH200 SMH200 1200mM 2 C7 6631900092A Harness Single PHR PHR 800mM 2 00MM 1 C8 6631900108C Harness Single SMH200 SMH200 350mM 2 LOC NO PART NO DESCRIPTION SPECIFICATION LOC NO PART NO DESCRIPTION SPECIFICATION Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 45: ...Jul 2007 Printed in Korea P NO MFL36483001 ...

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