manualshive.com logo in svg

LG DU-37LZ30, Service Manual

Share
Download
LG DU-37LZ30 Service Manual Download Page 39

2004.03.19

Summary of Contents for DU-37LZ30

Page 1: ... TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS AL 03HA MODEL DU 37LZ30 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ... 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 9 SVC REMOTE CONTROLLER 12 TROUBLE SHOOTING 13 BLOCK DIAGRAM 16 WIRING DIAGRAM 18 EXPLODED VIEW 19 EXPLODED VIEW PARTS LIST 20 REPLACEMENT PARTS LIST 21 SVC SHEET ...

Page 3: ...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 ...

Page 4: ...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 Altern...

Page 5: ...d 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 th...

Page 6: ... Input voltage Screen Size Aspect Ratio Tuning System LCD Module Operting environment Storage Environment ATSC 64 256 QAM NTSC M VHF 02 13 UHF 14 69 CATV 01 135 DTV 02 69 AC 100 260V 50Hz 60HZ 37 inch wide 16 9 FS LC300W02 C5 K1 1280 x 768 1 Temp 0 40 deg 2 Humidity 10 90 1 Temp 20 50 deg 2 Humidity 10 90 Item Specification Remark No SILM VSB LG Philips LCD 5 LCD Module 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 7: ...4 x 480 1280 x720 1280 x 720 1920 x 1080 1920 x 1080 H freq kHz 31 468 31 469 37 927 31 469 37 861 37 500 43 269 35 156 37 879 48 077 46 875 53 674 48 363 56 476 60 023 31 47 45 00 44 96 33 75 33 72 V freq kHz 70 09 70 08 85 03 59 94 72 80 75 00 85 00 56 25 60 31 72 18 75 00 85 06 60 00 70 06 75 02 59 94 60 00 59 94 60 00 59 94 Proposed EGA DOS DOS VESA VGA VESA VGA VESA VGA VESA VGA VESA SVGA VES...

Page 8: ...156 37 879 48 077 46 875 53 674 48 363 56 476 60 023 31 47 45 00 44 96 33 75 33 72 V freq kHz 70 09 70 08 85 03 59 94 72 80 75 00 85 00 56 25 60 31 72 18 75 00 85 06 60 00 70 06 75 02 59 94 60 00 59 94 60 00 59 94 Proposed EGA DOS DOS VESA VGA VESA VGA VESA VGA VESA VGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA SVGA VESA XGA VESA XGA VESA XGA SDTV 480P HDTV 720P HDTV 720P HDTV 1080I HDTV 1080I ...

Page 9: ...table 4 2 AdjustAD9883A Set 4 2 1Overview AD9883A Set adjustment is a function to automatically set the optimum black level and gain in the analog to digital converter and compensate for RGBdeviation 4 2 2DevicesUsed Adjustment remote controller and 801GF 802B 802F 802R pattern generator The latter should be capable of outputting the 720P vertical 100 color bar pattern as shown below and its outpu...

Page 10: ... adjustment will reduce color difference between the main and sub displaysinPIP POP andSPLITscreenmodes 1 Input the in house signal wait one second or longer after signal reception get to Ez Adjust by pushing ADJ KEY select 2 VPX3226 and get to the adjustment mode by pushing the right hand side key 2 Get to the adjustment mode and the display will automatically become a TV6CHSPLITscreen Awindowwil...

Page 11: ... OFF ON OFF ON 11 Figure 1 Cable Connection Windows EDID V1 0 User Manual Operating System MS Windows 98 2000 XP Port Setup Windows 98 Don t need setup Windows 2000 XP Need to Port Setup This program is available to LCD Monitor only 1 Port Setup a Copy UserPort sys file to c WINNT system32 drivers folder b Run Userport exe c Remove all default number d Add 300 3FF e Click Start button f Click Exit...

Page 12: ...nt input To check 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 ...

Page 13: ...oard P810 pin no 1 Fail Pass Pass Measure digital reference voltage 24V at Power Board CN304 pin no 15 Measure standby voltage 6V at A_board P818 pin no 6 Fail Pass Measure analog reference voltage 24V at Power Board CN303 pin no 15 Does the set turn on normally Fail Pass Pass Check the POWER ON signal level D_board P811 pin no 2 and 3 0 8V Measure D_board supply voltage 3 3V at P810 pin no 7 6V a...

Page 14: ... Pass Measure standby voltage 5V at A_board P820 pin no 1 Fail Pass Pass Replace A_board Measure Supply voltage 3 3V at D_board P810 pin no 7 6V at pin no 11 12V at pin no 4 Check no power Go to No power Fail Pass Replace D_board Replace A_board Measure module T con voltage 12V at D_board C1401 Fail Pass Replace D_board Measure analog supply 6V and 3 3V at A_board P818 pin no 9 and 8 respectively ...

Page 15: ...put 4V at D_power_board P815 pin no 4 Fail Pass Fail Pass Replace D_power_board Check if A_board 18V is short circuited Resistance between A_board P821 pin no 2 and 3 infinity Fail Check output to the speaker Does P601 no 1 waveform exist NO Pass Replace A_board Replace A_board Replace Speaker ...

Page 16: ...BLOCK DIAGRAM 16 ...

Page 17: ...ilter with Y C divided The video decoder VPX3226E is a chip that decodes input signals HD II is a chip that controls nearly all video related functions including brightness sharpness video formatting and scaling If digital broadcasting is available it comes through TP which can be controlled from HD II Video SW CXA2151 is an IC that outputs video signals selectively The selected one is outputted t...

Page 18: ...R INVERTER IR 2 3 4 5 15P 15P 10P 12P 12P 12P 5P 4P DVI WIRING DIAGRAM No Part No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Wiring Part List 6631T11020E 6631V00042B 6631T20032P 6631T25019P 6631T25019X 6631T20037A 6631T20030F 6631T20028K 6631T25019V 6631T20033M 6631T25019W 6631V20023A 6631T20032Q 6631T25019U 6631V10004A 6631T11017J ...

Page 19: ... 19 EXPLODED VIEW 001 002 005 006 007 008 009 010 011 012 013 014 015 016 017 018 003 004 ...

Page 20: ...1TST623A PWB PCB ASSEMBLY SUB DN 37LZ30 ETC TOTAL BRAND IR BOARD 10 6871TST624A PWB PCB ASSEMBLY SUB DN 37LZ30 SUB TOTAL BRAND SIDE A V 11 4951TKS162C METAL ASSEMBLY FRAME METAL MAIN ASSY DN 37LZ30 4951TKS162E METAL ASSEMBLY FRAME MAIN DN DU 37LZ30 12 6871TPT283B PWB PCB ASSEMBLY POWER 37 42INCH PSU POWER TOTAL BRAND HAVE IR JACK 13 3313TD3014A MAIN TOTAL ASSEMBLY DU 37LZ30 BRAND AL 03HA DIGITAL 3...

Page 21: ...TION SPECIFICATION C1858 0CH3103K516 10000PF 50V 10 B Y5P 2012 C1861 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1863 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1864 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1866 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1867 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C601 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C603 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C605 0CH3104K566 0 1UF 5...

Page 22: ...8 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C749 0CH3103K516 10000PF 50V 10 B Y5P 2012 DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C773 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C774 0CH3103K516 10000PF 50V 10 B Y5P 2012 C784 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C786 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C787 0CH3103K516 10000PF 50V 10 B Y5P 2012 C854 0CH3104K566 0 1UF 50V 10 X7R 2012...

Page 23: ... SOD323 ZD112 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD113 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION ZD115 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD128 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD101 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD102 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD120 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 ZD121 0DZ5...

Page 24: ...TR387500AA CHIP 2SC3875S ALY BK KEC Q811 0TR387500AA CHIP 2SC3875S ALY BK KEC Q820 0TR387500AA CHIP 2SC3875S ALY BK KEC Q821 0TR387500AA CHIP 2SC3875S ALY BK KEC Q822 0TR387500AA CHIP 2SC3875S ALY BK KEC Q823 0TR387500AA CHIP 2SC3875S ALY BK KEC DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q824 0TR150400BA CHIP 2SA1504S ASY BK KEC Q827 0TR387500AA CHIP 2SC3875S ALY BK KEC Q828 0TR38...

Page 25: ...603 0RH4702D622 47K 1 10W 5 D R TP R1801 0RH1000D622 100 1 10W 5 D R TP R1802 0RH1000D622 100 1 10W 5 D R TP DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1809 0RH0752D622 75 1 10W 5 D R TP R1810 0RH5100D622 510 1 10W 5 D R TP R1813 0RH2200D622 220 1 10W 5 D R TP R1815 0RH0752D622 75 1 10W 5 D R TP R1820 0RH1000D622 100 1 10W 5 D R TP R1825 0RH0102D622 10 1 10W 5 D R TP R1826 0RH010...

Page 26: ...2 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R143 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R144 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R149 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R150 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R151 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R152 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R153 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R154 0RH0000D622 0 OHM 1 10 W 2012 5 00 D R163 0RH0000D622 0 OHM 1 ...

Page 27: ...BAND T804 6200J00011A H354LAI K5202 TOKO R TP BAND JAV1 6613V00024A PPJ152 01 PARK ELEC AV JACK DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION JDAU1 6613V00023A PPJ151 01 PARK ELEC PIN JACK JRCA1 6613V00024B PPJ152 02 PARK ELEC DVD JACK JA101 6612BBBHN4A TOTX179 TOSHIBA OPTIC TX MOD JA102 6612BBBHN4B TORX179 TOSHIBA S PDIF OPTIC JA103 6612BBBHN4B TORX179 TOSHIBA S PDIF OPTIC JSA1 380 ...

Page 28: ...7R 2012 R TP C265 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C266 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C267 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C268 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C269 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C276 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C277 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C278 0CH3104K566 0 ...

Page 29: ...P 2012 C861 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C876 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C877 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C880 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C883 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C900 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C901 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C902 0CH3104K566 0 1UF 50...

Page 30: ...00PF 50V 10 B Y5P 2012 R C357 0CH2474F566 0 47UF 16V 10 X7R 2012 R TP C358 0CH2102K516 1000PF 50V 10 B Y5P 2012 R DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C838 0CH2334F566 0 33UF 16V 10 X7R 2012 R TP C845 0CH2334F566 0 33UF 16V 10 X7R 2012 R TP C850 0CH2334F566 0 33UF 16V 10 X7R 2012 R TP C825 0CE227DK618 220UF STD 50V M FL TP5 C829 0CE227DK618 220UF STD 50V M FL TP5 C1201 0CH81...

Page 31: ...SPECIFICATION IC105 0IKE702900G KIA7029AF SOT 89 TP 2 9V VOL IC300 0ILNRMN005A VPX3226E MICRONAS 44 QFP TRA IC308 0ILNRMN005A VPX3226E MICRONAS 44 QFP TRA IC103 0IMMRSS041D K4S641632H TL75 SAMSUNG ELEC IC104 0IMMRSS041D K4S641632H TL75 SAMSUNG ELEC IC107 0IAL242561B AT24C256W 10SI 2 7V 8P SOIC IC210 0IMMRSS041D K4S641632H TL75 SAMSUNG ELEC IC211 0IMMRSS041D K4S641632H TL75 SAMSUNG ELEC IC212 0IMMR...

Page 32: ...875S ALY BK KEC Q600 0TR830009BA BSS83 TP PHILIPS NON N CHANN Q601 0TR830009BA BSS83 TP PHILIPS NON N CHANN Q602 0TR387500AA CHIP 2SC3875S ALY BK KEC Q800 0TR387500AA CHIP 2SC3875S ALY BK KEC Q801 0TR387500AA CHIP 2SC3875S ALY BK KEC Q802 0TR150400BA CHIP 2SA1504S ASY BK KEC Q810 0TR387500AA CHIP 2SC3875S ALY BK KEC DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q811 0TR387500AA CHIP ...

Page 33: ...0W 5 D R TP R329 0RH1602D622 16K 1 10W 5 TA R331 0RH3300D622 330 1 10W 5 D R TP R332 0RH4702D622 47K 1 10W 5 D R TP DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R333 0RH4702D622 47K 1 10W 5 D R TP R334 0RH4702D622 47K 1 10W 5 D R TP R335 0RH4702D622 47K 1 10W 5 D R TP R336 0RH4702D622 47K 1 10W 5 D R TP R337 0RH4702D622 47K 1 10W 5 D R TP R338 0RH4702D622 47K 1 10W 5 D R TP R339 0RH...

Page 34: ...0RH0222D622 22 OHM 1 10 W 2012 5 00 D R354 0RH0222D622 22 OHM 1 10 W 2012 5 00 D DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R361 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R362 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R395 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R398 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R399 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R411 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R...

Page 35: ...HM 1 10 W 2012 5 00 D R317 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R318 0RH0222D622 22 OHM 1 10 W 2012 5 00 D DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R319 0RH0331D622 3 3 OHM 1 10 W 2012 5 00 R320 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R321 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R322 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R323 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R324 0RH2201D622 2...

Page 36: ...22 22 OHM 1 10 W 2012 5 00 D R902 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R906 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R907 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R908 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R910 0RH0222D622 22 OHM 1 10 W 2012 5 00 D DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R912 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R913 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R914 0RH02...

Page 37: ...10W 5 D R TP R1258 0RH4701D622 4 7K 1 10W 5 D R TP R1260 0RH4701D622 4 7K 1 10W 5 D R TP DATE 2004 7 7 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1261 0RH4701D622 4 7K 1 10W 5 D R TP R1262 0RH1500D622 150 1 10W 5 D R TP R1263 0RH4701D622 4 7K 1 10W 5 D R TP R1266 0RH4701D622 4 7K 1 10W 5 D R TP R1267 0RH4701D622 4 7K 1 10W 5 D R TP R1268 0RH1500D622 150 1 10W 5 D R TP R1275 0RH3302D622 33K 1 1...

Page 38: ...0 R2101 0RH0472D622 47 1 10W 5 D R TP R2102 0RH0752D622 75 1 10W 5 D R TP R2103 0RH0752D622 75 1 10W 5 D R TP R2104 0RH0752D622 75 1 10W 5 D R TP R2105 0RH0752D622 75 1 10W 5 D R TP R2106 0RH0752D622 75 1 10W 5 D R TP R2108 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R2109 0RH0222D622 22 OHM 1 10 W 2012 5 00 D 38 ...

Page 39: ...2004 03 19 ...

Page 40: ......

Page 41: ......

Page 42: ......

Page 43: ......

Page 44: ......

Page 45: ...Jul 2004 Printed in Korea P NO 3828TSL104C ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands