LG DU-30LZ30 Service Manual Download Page 16 | Manualshive

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No Sound

Check

sound supply:

18V at A_board P821

pin no. 3

Measure

A_power board trans

output:

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

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Summary of Contents for DU-30LZ30

Page 1: ... TV SERVICE MANUAL CAUTION BEFORE SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS AL 03HA MODEL DU 30LZ30 website http biz LGservice com e mail http www LGEservice com techsup html ...

Page 2: ...PRODUCT SAFETY 3 SPECIFICATION 6 TIMING CHART 9 ADJUSTMENT INSTRUCTION 10 SVC REMOCON 13 TROUBLE SHOOTING 14 BLOCK DIAGRAM 17 WIRING DIAGRAM 19 EXPLODED VIEW 21 EXPLODED VIEW PARTS LIST 22 REPLACEMENT PARTS LIST 23 SVC SHEET ...

Page 3: ...erform 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 o...

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: ...Testing Standard 2 Another Required Standard EMI Following CE Standard EN55020 EN55013 SAFETY Following CB Standard EN60065 SPECIFICATION NOTE Specifications and others are subject to change without notice for improvement 4 General Specification 1 2 3 4 5 6 7 8 9 Receiving system Available Channel Input voltage Screen Size Aspect Ratio Tuning System LCD Module Operting environment Storage Environm...

Page 7: ...ent1 Component2 RGB DTV DVI DTV DTV Analog Video1 Video2 Off On 1 99 Off Normal Digital Preset Night Time Movie Weak Signal VideoGame Sports Contrast Brightness Color Sharpness Tint Off On Warm Medium Cool Factory Preset English Spanish French Off On Off Normal Stadium Theater Music Balance Treble Bass Off 3D EchoSound System SRS TruSurround XT Off On Off On Time Zone Year Data Time Off On Time Of...

Page 8: ...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 9: ...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 10: ... 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 outp...

Page 11: ...dSubColor This 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 TV6CHSPLITscr...

Page 12: ... 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 13: ...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 14: ...at D_board P810 pin no 1 Fail Pass Pass Measure digital reference voltage 24V at line filter P810 pin no 1 Measure standby voltage 6V at D_board P818 pin no 6 Fail Pass Measure analog reference voltage 24V at A_board P818 pin no 15 Does the set turn on normally NO 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 at p...

Page 15: ... 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 16: ...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 17: ...BLOCK DIAGRAM 17 ...

Page 18: ...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 19: ...IN Digital POWER LED P SW CONTROL SPEAKER SPEAKER A V INVERTER INVERTER WIRING DIAGRAM No Part No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Wiring Part List 6631V00006Q 6631T20032L 6631T20032K 6631T25019T 6631T20028J 6631T20034A 6631T20030E 6631T20033M 6631T25019S 6631T25019Q 6631T25019U 6631V20023A 6631V10004A 6631T11017J 6851V00022D 6851V00022B ...

Page 20: ...MEMO 20 ...

Page 21: ... 21 EXPLODED VIEW 1 2 3 4 11 12 16 20 19 18 17 13 14 15 10 7 9 8 5 6 ...

Page 22: ... 3551TKS051C COVER ASSEMBLY DN 30LZ30 SPEAKER NON C SKD 11 3551TKS052A COVER ASSEMBLY DN 30LZ30 SPEAKER NON ASSY L 3551TKS052C COVER ASSEMBLY DN 30LZ30 SPEAKER NON C SKD 12 4950TKS277D METAL FRAME MAIN DU 30LZ30 4950TKS277E METAL FRAME MAIN C SKD 13 6871TPT279B PWB PCB ASSEMBLY POWER DN 30LZ30 POWER TOTAL BRAND AL 03HA 14 3313TD3006A MAIN TOTAL ASSEMBLY DU 30LZ30 BRAND AL 03HA DIGITAL 3313TD3015A ...

Page 23: ...RT NO DESCRIPTION SPECIFICATION C1818 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1854 0CH3103K516 10000PF 50V 10 B Y5P 2012 R C1856 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C1858 0CH3103K516 10000PF 50V 10 B Y5P 2012 R 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 ...

Page 24: ...822K516 8200PF 2012 50V 10 B Y5P R C942 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C943 0CH3103K516 10000PF 50V 10 B Y5P 2012 R C951 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C969 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C971 0CH3103K516 10000PF 50V 10 B Y5P 2012 R C980 0CH3103K516 10000PF 50V 10 B Y5P 2012 R C988 0CH3104K566 0 1UF 50V 10 X7R 201...

Page 25: ...TP ROHM K SOD323 2 ZD111 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD112 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION ZD113 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD115 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD120 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD121 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD122 0DZ510009EE UDZ S 5 1B TP ...

Page 26: ... BK KEC Q826 0TR150400BA CHIP 2SA1504S ASY BK KEC Q827 0TR387500AA CHIP 2SC3875S ALY BK KEC Q828 0TR387500AA CHIP 2SC3875S ALY BK KEC Q829 0TR150400BA CHIP 2SA1504S ASY BK KEC Q830 0TR387500AA CHIP 2SC3875S ALY BK KEC DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q832 0TR387500AA CHIP 2SC3875S ALY BK KEC Q833 0TR150400BA CHIP 2SA1504S ASY BK KEC Q834 0TR387500AA CHIP 2SC3875S ALY BK...

Page 27: ...01D622 1 8K 1 10W 5 D R TP R1856 0RH3301D622 3 3K 1 10W 5 D R TP R1857 0RH8200D622 820 1 10W 5 D R TP DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1858 0RH4700D622 470 1 10W 5 D R TP R1859 0RH5600D622 560 1 10W 5 D R TP R1860 0RH4701D622 4 7K 1 10W 5 D R TP R1861 0RH4701D622 4 7K 1 10W 5 D R TP R1862 0RH0000D622 0 1 10W P TYPE TAPPING R1863 0RH4700D622 470 1 10W 5 D R TP R1864 0RH...

Page 28: ...9 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R884 0RH2200D622 220 1 10W 5 D R TP R885 0RH4702D622 47K 1 10W 5 D R TP R886 0RH5601D622 5 6K 1 10W 5 D R TP R887 0RH2200D622 220 1 10W 5 D R TP R888 0RH5601D622 5 6K 1 10W 5 D R TP R891 0RH4703D622 470K 1 10W 5 D R TP R893 0RH4703D622 470K 1 10W 5 D R TP R895 0RH4702D622 47K 1 10W 5 D R TP R896 0RH2200D622 220 1 10W 5 D R TP R898 0RH3303D622 330K 1 ...

Page 29: ...2 6200C000009 H354LAI K5225 KOREA TOKO R TP T803 6200C000010 H354LAI K5202 KOREA TOKO R TP T804 6200C000010 H354LAI K5202 KOREA TOKO R TP X801 6212AB2015A HC 49 SM4H BUBANG 4MHZ 30 X802 6212AB2015B HC 49 SM5H BUBANG 20MHZ 3 DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION X902 6202VDT002H SX 1 SUNNY 18 432000MHZ 30 jack 6612BBBHN4A TOTX179 TOSHIBA OPTIC TX MODU JA102 6612BBBHN4B TORX17...

Page 30: ...F 50V 10 X7R 2012 R TP C227 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C228 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C229 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C230 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C231 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C232 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C233 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C234 0CH...

Page 31: ... 2012 R TP C413 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C414 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C415 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C417 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C421 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C423 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C425 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C431 0CH3104K566 0 1...

Page 32: ...6 0 1UF 50V 10 X7R 2012 R TP C925 0CH3103K516 10000PF 50V 10 B Y5P 2012 R DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C926 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C301 0CH2102K516 1000PF 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 C838 0CH2334F566 0 33UF 16V 10 X7R 2012 R TP C845 0CH2334F566 0 33UF 16V 10 X7R 2012 R T...

Page 33: ...ESCRIPTION SPECIFICATION IC103 0IMMRSS041D K4S641632H TL75 SAMSUNG ELECT IC104 0IMMRSS041D K4S641632H TL75 SAMSUNG ELECT IC105 0IKE702900G KIA7029AF SOT 89 TP 2 9V VOLT IC106 0IPH741400E 74HC14D 14SOP TP SHITTER TRIG IC107 0IAL242561B AT24C256W 10SI 2 7V 8P SOIC S IC109 0IMCRPH026A PCA9516PW PHILIPS 16P TSSOP R IC110 0IMCRSG010A ST3232CDR SGS THOMSON SOP16 R IC200 0ICTMLG009A LGDT1102 HD2 LG IC SB...

Page 34: ...BK KEC Q552 0TR150400BA CHIP 2SA1504S ASY BK KEC Q553 0TR150400BA CHIP 2SA1504S ASY BK KEC Q554 0TR150400BA CHIP 2SA1504S ASY BK KEC Q600 0TR830009BA BSS83 TP PHILIPS NON N CHANNE Q601 0TR830009BA BSS83 TP PHILIPS NON N CHANNE Q602 0TR387500AA CHIP 2SC3875S ALY BK KEC Q800 0TR387500AA CHIP 2SC3875S ALY BK KEC DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q801 0TR387500AA CHIP 2SC387...

Page 35: ...NG R394 0RH0000D622 0 1 10W P TYPE TAPPING R396 0RH0682D622 68 1 10W 5 D R TP DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R397 0RH0272D622 27 1 10W 5 D R TP R430 0RH0000D622 0 1 10W P TYPE TAPPING R431 0RH0000D622 0 1 10W P TYPE TAPPING R432 0RH0000D622 0 1 10W P TYPE TAPPING R491 0RH0000D622 0 1 10W P TYPE TAPPING R492 0RH3300D622 330 1 10W 5 D R TP R502 0RH1201D622 1 2K 1 10W 5 ...

Page 36: ... 1608 5 R TP AR403 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR404 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR405 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR600 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR601 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR602 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR603 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR604 0RRZVTA001D 22 OHM 1 16 W 1608 5 R TP AR611 0RRZVTA001D 22 OHM 1 16 W 160...

Page 37: ... W 2012 5 00 D R323 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R324 0RH2201D622 2 2K OHM 1 10 W 2012 5 00 DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R325 0RH2201D622 2 2K OHM 1 10 W 2012 5 00 R326 0RH2201D622 2 2K OHM 1 10 W 2012 5 00 R327 0RH2201D622 2 2K OHM 1 10 W 2012 5 00 R330 0RH1002D622 10K OHM 1 10 W 2012 5 00 D R341 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R342 0RH1001D622 1K OH...

Page 38: ...5 00 D R910 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R911 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R912 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R913 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R914 0RH0222D622 22 OHM 1 10 W 2012 5 00 D DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R915 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R916 0RH0222D622 22 OHM 1 10 W 2012 5 00 D R917 0RH1001D622 1K OHM 1 10 W ...

Page 39: ...W 5 D R TP R1278 0RH1000D622 100 1 10W 5 D R TP R1279 0RH0000D622 0 1 10W P TYPE TAPPING R1280 0RH0000D622 0 1 10W P TYPE TAPPING R1281 0RH0000D622 0 1 10W P TYPE TAPPING R1282 0RH0000D622 0 1 10W P TYPE TAPPING DATE 2004 4 29 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R1283 0RH0000D622 0 1 10W P TYPE TAPPING R1284 0RH0000D622 0 1 10W P TYPE TAPPING R1285 0RH0000D622 0 1 10W P TYPE TAPPING R128...

Page 40: ...5 D R TP ZD2101 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD2102 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 ZD2103 0DZ510009EE UDZ S 5 1B TP ROHM K SOD323 2 PA1000 6726VV0006J TSOP2238MQ1 VISHAY 38KHZ MC00 JA2101 6613V00010F PMJ 016 06 PARK ELEC MUTI JAC LD1201 6301T00004A YANGWOO LED ASEMBLY ATSC 30 R CONTROLLER 6710T00009B DU 42LZ30 ACPLKX NA 6710V00 P CORD 6410VUH003A PS204 001 VOLEX UL CSA 1800...

Page 41: ...2004 03 19 ...

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Page 47: ...Apr 2004 Printed in Korea P NO 3828TSL101Y ...

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