LG Flatron L3020T Service Monitor Download Page 16 | Manualshive

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TROUBLESHOOTING GUIDE

1. NO POWER

NO POWER

(POWER INDICATOR OFF)

CHECK POWER BOARD

CHECK J601

VOLTAGE

(18V, 12V, 5V)?

NO

CHECK POWER BOARD

CHECK

J602 VOLTAGE

(LPL: 24V,

CMO: 12V) ?

NO

CHECK KEY

CONTROL BOARD

YES

YES

YES

YES

CHECK X401

CHECK

X401

(14.318MHz) ?

NO

CHECK MICOM(U402)

SUB POWER PORT(R419)

CHECK

J601

(SUB POWER) ?

NO

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Summary of Contents for Flatron L3020T

Page 1: ...ebsite http biz LGservice com E mail http www LGEservice com techsup html CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO CL 49 MODEL L3020T L3020AL AL T L3020A L3020AL AL A Same model for Service ...

Page 2: ... Output PC 8W AV 8W 3 3 Sync Input Horizontal 30 66kHz Digital 30 63kHz Vertical 56 85Hz Input Form Separate TTL Positive Negative Digital 4 POWER SUPPLY 4 1 Power Adaptor Input AC 100 240V 50 60Hz 2 0A Output DC 5V 0 9A DC12V 1 5A DC18V 1 0A DC24V 5 0A 4 2 Power Consumption 5 ENVIRONMENT 6 1 Operating Temperature 10 C 35 C 50 F 95 F 6 2 Operating Humidity 10 80 6 3 MTBF 50 000 Hours Min 6 DIMENSI...

Page 3: ...c T M D S Data1 T M D S Data1 T M D S Data1 3 Shield T M D S Data3 T M D S Data3 5V Power Ground return for 5V H Sync and V Sync Pin Signal DVI D 1 8 9 17 24 16 16 17 18 19 20 21 22 23 24 Hot Plug Detect T M D S Data0 T M D S Data0 T M D S Data0 5 Shield T M D S Data5 T M D S Data5 T M D S Clock Shield T M D S Clock T M D S Clock T M D S Transition Minimized Differential Signaling DVI D Connector ...

Page 4: ... such as pencil or pen as this may result in damage to the panel Protect the module from the ESD as it may damage the electronic circuit C MOS Make certain that treatment person s body are grounded through wrist band Do not leave the module in high temperature and in areas of high humidity for a long time The module not be exposed to the direct sunlight Avoid contact with water as it may a short c...

Page 5: ...52 V 85 061 631 600 1 3 27 H 49 725 1152 832 32 64 224 V 74 55 667 624 1 3 39 H 48 363 1344 1024 24 136 160 V 60 0 806 768 3 6 29 H 60 123 1312 1024 16 96 176 V 75 029 800 768 1 3 28 H 63 981 1688 1280 48 112 248 V 60 02 1066 1024 1 3 38 H 47 7 1680 1280 66 134 200 V 60 795 768 1 3 23 Mode H V Sort 1 2 3 4 5 6 7 8 9 10 11 12 13 25 175 28 321 25 175 31 5 36 0 40 0 49 5 56 25 57 283 65 0 78 75 108 0...

Page 6: ...menufromyourPC ThecableforRS 232Cterminalconnectionisnotan accessoryincludedintheproduct Pleasepurchase thecable 2 DVIDigitalSignalConnector 3 D SUBAnalogSignalConnector 4 TVTunerJack Connecttheantenna L3020T Option 5 Connectthepowercord 6 SpeakerTerminal Connectthespeaker PC Audio InputTerminal Connecttheaudiocable totheLINEOUTjackinthe PCsoundcard Headphone earphone ConnectionTerminal S VideoInp...

Page 7: ...ted AUTO SELECT Button 1 2 3 4 5 6 8 7 This function allows you to secure the current control settings so that they cannot be inadvertently changed Press and hold the MENU button and right button for 3 seconds the message CONTROLS LOCKED appears You can unlock the OSD controls at any time by pushing the MENU button and right button for 3 seconds the message CONTROLS UNLOCKED will appear Use this b...

Page 8: ...lly adjusts the image Press this button repetitively to set the intended screen CAPTION Button L3020T Only U S A There is not a function which is supported L3020A Menu Button Exit Button Auto Channel Button TV Automatic TV channel setup Applicable to the model equipped with the TV tuner Option L3020T PC Automatic adjustment function Operational for the analog signal only Channel Number Select Butt...

Page 9: ...will be changed with the following order Set the signal type you want POP ON PBP FULL PBP 4 3 Input Select Button TV AV Button 3 Swap Button You can swap the main screen and the sub screen when the PIP POP PBP function is used When Input Signal 1 comes on in the main screen only Input Signal 2 can be displayed on the sub screen On the contrary if the main screen displays Input Signal 2 the sub scr...

Page 10: ...802 J803 J804 Connector Ass y P N 6631T11016A Connector Ass y P N 6631T20029C Connector Ass y P N 6631T20028D Connector Ass y P N 6631T20028C Connector Ass y P N 6631T12002P Connector Ass y P N 6631T12002N Connector Ass y P N 6631T20029B Connector Ass y P N 6631T20028E Connector Ass y P N 6631T20028B ...

Page 11: ...03 J804 J403 Connector Ass y P N 6631T11016K Connector Ass y P N 6631T20029C Connector Ass y P N 6631T20028E Connector Ass y P N 6631T20028B Connector Ass y P N 6631T20028D Connector Ass y P N 6631T20028C Connector Ass y P N 6631T20020T Connector Ass y P N 6631T120020S Connector Ass y P N 6631T20029B ...

Page 12: ...lash Memory 29LV040B Data OCMD 0 7 OCMA 0 19 3 3V 1 8V Serial Port H V Sync MAX232C RXD TXD Video Signal Processor gm1501 Caption V Chip M37136 64Mb SDRAM HY57V643220 PCB_PWR INV_PWR LCM_PWR AMP_PWR Analog Signal Analog Switch BA7657F Digital Signal YUV Deinterlacer FLI2310 HDTV EEPROM DDC A EEPROM DDC D Video Signal 3D CombFilter UPD64083 Video Decoder VPC3230 Y C out CVBS PAL C out 16 Bit 24Bit ...

Page 13: ...es The function of the audio amplifier is that to amplify audio L R signal transmitted from audio decoder The audio signal is amplified according to pre defined DC volume control curve Also Headphone amplifier Tpa6110 U501 is controlled through Line out 6 De interlacer This block is composed of FLI 2310 U301 and peripheral devices GM1501 U402 controls this IC through IIC Line And this IC converts ...

Page 14: ... procedure only when there is some problem on Analog EDID data 2 Run alignment program for L3020AL on the IBM compatible PC 3 Select EEPROM Analog EDID write command and Enter 4 This will write the Analog EDID data to EEPROM 3 DDC Data Write Procedure Digital 1 Use this procedure only when there is some problem on Digital EDID data 2 Run alignment program for L3020AL on the IBM compatible PC 3 Sel...

Page 15: ...E 21 H WB 0 SETUP NVRAM INITIAL MICOM VERSION Ver 49 VCHIP TEST OFF OFF L3020AL MODEL ELAPSED T IME 21 H WB 1 SETUP 3 Then move SETUP You can see SVC OSD ADJUST WHITE BALANCE 4 Press Down key to move WB 5 Input Full Black signal through D Sub and the number beside WB changes 1 NVRAM INITIAL MICOM VERSION Ver 49 VCHIP TEST OFF OFF L3020AL MODEL ELAPSED T IME 21 H WB 2 SETUP 7 Input Full White signa...

Page 16: ...NDICATOR OFF CHECK POWER BOARD CHECK J601 VOLTAGE 18V 12V 5V NO CHECK POWER BOARD CHECK J602 VOLTAGE LPL 24V CMO 12V NO CHECK KEY CONTROL BOARD YES YES YES YES CHECK X401 CHECK X401 14 318MHz NO CHECK MICOM U402 SUB POWER PORT R419 CHECK J601 SUB POWER NO ...

Page 17: ...STER OSD IS NOT DISPLAYED CHECK THE PERIPHERAL IC U402 CHECK U402 NO CHECK THE PERIPHERAL IC U402 CHECK LVDS OUTPUT J403 NO CHECK INVERTER YES YES YES YES CHECK U604 AND THE PERIPHERAL IC U604 CHECK INVERTER POWER LPL J604 J605 CMO J606 J607 NO ...

Page 18: ...IPHERAL IC OF GM1501 U402 CHECK UPD64083 U6 I O SIGNAL CHECK VPC3230 U1 I O SIGNAL CHECK FLI2310 U301 AND SDRAM U302 I O SIGNAL CHECK GM1501 U402 AND SDRAM U401 POWER CHECK OF CXA2040 U3 L3 9V POWER CHECK OF UPD64083 U6 U5 3 3V L17 2 5V POWER CHECK OF FLI2310 U301 L307 3 3V L302 3 3V L308 1 8V L301 1 8V POWER CHECK OF GM1501 U402 NO INPUT SIGNAL NO INPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO ...

Page 19: ... CHECK UPD64083 U6 I O SIGNAL CHECK VPC3230 U1 I O SIGNAL CHECK FLI2310 U301 AND SDRAM U302 I O SIGNAL CHECK GM1501 U402 AND SDRAM U401 POWER CHECK OF TUNER TU701 C714 3 3V C716 5V POWER CHECK OF CXA2040 U3 L3 9V POWER CHECK OF UPD64083 U6 L17 2 5V L20 2 5V POWER CHECK OF VPC3230 U16 L18 5V L9 3 3V POWER CHECK OF FLI2310 U301 L302 3 3V L307 3 3V L301 1 8V L308 1 8V POWER CHECK OF GM1501 U402 NO IN...

Page 20: ...CK CONNECTION OF SPEAKER ON MONITOR CHECK SOUND INPUT PC SOUND J804 VIDEO DVD DTV SOUND RED WHITE OF J809 J808 CHECK THE PERIPHERAL IC OF MSP3420G U503 CHECK MSP3420G U503 I O SIGNAL CHECK TPA3004 U505 I O SIGNAL CONNECTOR CHECK POWER CHECK OF MSP3420G U503 L514 8V L509 5V L512 5V POWER CHECK OF TPA3004 U505 C587 18V NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO INPUT SIGNAL NO INPUT SIGNAL...

Page 21: ...PERIPHERAL IC OF GM1501 U402 CHECK THE PERIPHERAL IC OF D SUB J103 CHECK I O SYNC OF BA7657 U103 CHECK ADC I O SIGNAL IN GN1501 U402 CHECK GM1501 U402 I O SIGNAL CHECK LVDS I O SIGNAL POWER CHECK OF BA7657 U103 L102 5V POWER CHECK OF GM1501 U402 POWER CHECK OF LVDS OUTPUT J403 NO OUTPUT SIGNAL NO INPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL ...

Page 22: ...CONNECTOR J102 CHECK CHECK THE PERIPHERAL IC OF GM1501 U402 CHECK THE PERIPHERAL IC OF GM1501 U402 CHECK GM1501 U402 I O SIGNAL CHECK LVDS I O SIGNAL POWER CHECK OF GM1501 U402 POWER CHECK OF LVDS OUTPUT J403 NO OUTPUT SIGNAL NO OUTPUT SIGNAL NO INPUT SIGNAL NO INPUT SIGNAL ...

Page 23: ... 23 1 2 3 4 5 7 9 6 17 18 19 20 21 22 10 23 15 16 8 12 11 24 24 13 14 EXPLODED VIEW ...

Page 24: ...IN_L3020A LPL METAL ASSEMBLY FRAME MAIN_L3020A CMO METAL ASSEMBLY FRAME MAIN_CMO_CKD PWB PCB ASSEMBLY SUB L3020AL SOUND TOTAL BRAND SPEAKER SUB B D COVER L3020A CABLE AV PWB PCB ASSEMBLY POWER L3020A POWER TOTAL IPT FOR LPL PWB PCB ASSEMBLY POWER L3020A POWER TOTAL IPT FOR CMO MAIN TOTAL ASSEMBLY L3020AL BRAND CL 49 L3020T LPL MAIN TOTAL ASSEMBLY L3020AL BRAND CL 49 L3020A LPL MAIN TOTAL ASSEMBLY ...

Page 25: ...OC NO PART NO DESCRIPTION SPECIFICATION C68 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C69 0CH8106F691 10UF 16V 20 105STD CYL R T C70 0CH6102K406 1000PF 50V J SL 2012 R TP C71 0CK105CF94A 1UF 1608 16V 80 20 R TP F C72 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C73 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C74 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C75 0CK105CF94A 1UF 1608 16V 80 20 R TP F C76 0CK104CK56A 0 1...

Page 26: ...R TP X7R C267 0CK105CF94A 1UF 1608 16V 80 20 R TP F C284 0CC101CK41A 100PF 1608 50V 5 R TP NP0 DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C285 0CC101CK41A 100PF 1608 50V 5 R TP NP0 C286 0CK105CF94A 1UF 1608 16V 80 20 R TP F C287 0CH6201K416 200PF 50V J NP0 2012 R TP C288 0CH6201K416 200PF 50V J NP0 2012 R TP C289 0CH6102K406 1000PF 50V J SL 2012 R TP C290 0CK104CK56A 0 1UF 1608 ...

Page 27: ...5 0CK474CH94A 0 47UF 1608 25V 80 20 R TP C508 0CK474CH94A 0 47UF 1608 25V 80 20 R TP DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C509 0CK104CK56A 0 1UF 1608 50V 10 R TP X7R C510 0CK474CH94A 0 47UF 1608 25V 80 20 R TP C512 0CC102CK41A 1000PF 1608 50V 5 R TP NP0 C513 0CK105CF94A 1UF 1608 16V 80 20 R TP F C514 0CK103CK51A 0 01UF 1608 50V 10 R TP B Y5 C515 0CC102CK41A 1000PF 1608 50V...

Page 28: ...2012 R TP C675 0CH8106J691 10UF 35V 20 105STD CYL R T C680 0CE476EK638 47UF KMG 50V M FM5 TP 5 C690 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C691 0CE227BF638 220U KME 16V M FM5 TP5 C692 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C693 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C694 0CH3104K566 0 1UF 50V 10 X7R 2012 R TP C701 0CH3104K566 0 1UF 50V ...

Page 29: ...018A PACDN004 CAMD R TP SOT143 5V U201 0IFA754207A KA75420ZTA KA7542ZTA 3P TO 9 LPL DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION U202 0IZZTSZ302A MITSUBISHI 52P SDIP ST V CHIP LPL U301 0IMCRGN001B FLI2310BC GENESIS 208P PQFP T U302 0IMMRHY033A HY57V643220C L T 6 HYNIX 86P U401 0IMMRHY051A HY5DU283222AQ 4 HYNIX 100P LQ U402 0IPRPGN011A GM1501 GENESIS 406P TRAY UXG U403 0IZZTSZ301A ...

Page 30: ...C3875S ALY BK KEC Q2 0TR150400BA CHIP 2SA1504S ASY BK KEC Q3 0TR387500AA CHIP 2SC3875S ALY BK KEC Q4 0TR390409AE FAIRCHILD KST3904 LGEMTF TP DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION Q5 0TR390409AE FAIRCHILD KST3904 LGEMTF TP Q9 0TR150400BA CHIP 2SA1504S ASY BK KEC Q10 0TR390409AE FAIRCHILD KST3904 LGEMTF TP Q11 0TR390409AE FAIRCHILD KST3904 LGEMTF TP Q14 0TR390609FA KST3906 MT...

Page 31: ...8 R TP R126 0RJ3301D677 3 3K OHM 1 10 W 5 1608 R TP R127 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R128 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP R129 0RJ4701D677 4 7K OHM 1 10 W 5 1608 R TP R130 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP R131 0RJ8200D677 820 OHM 1 10 W 5 1608 R TP R132 0RJ0472D677 47 OHM 1 10 W 5 1608 R TP R133 0RJ1002D677 10K OHM 1...

Page 32: ... 0RJ2202D677 22K OHM 1 10 W 5 1608 R TP R447 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R448 0RJ1002D677 10K OHM 1 10 W 5 1608 R TP R450 0RJ4700D677 470 OHM 1 10 W 5 1608 R TP R451 0RH0000D622 0 1 10W P TYPE TAPPING R453 0RH4700D622 470 1 10W 5 D R TP R457 0RH3302D622 33K 1 10W 5 D R TP R458 0RJ0000D677 0 OHM 1 10 W 5 1608 R TP CMO R463 0RJ...

Page 33: ...HM 1 10 W 5 1608 R TP R655 0RH3301D622 3 3K 1 10W 5 D R TP R656 0RJ1001D677 1K OHM 1 10 W 5 1608 R TP R701 0RH0000D622 0 1 10W P TYPE TAPPING DATE 2003 12 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION R702 0RH0000D622 0 1 10W P TYPE TAPPING R703 0RH1001D622 1K OHM 1 10 W 2012 5 00 D R705 0RH2703D622 270K 1 10W 5 D R TP R706 0RH1502D622 15K 1 10W 5 D R TP R707 0RH1001D622 1K OHM 1 10 W 2012 5 00...

Page 34: ...3 5MHZ 30 PP X401 6202TST001A SX 1 SUNNY SMS 14 31818MHZ X501 6202TST003B HC 49 SM5H KONY CHIP 18 432MH SW10 140 058B EVQ PB2 05K MATUSHITA NON 12 SW2 140 058B EVQ PB2 05K MATUSHITA NON 12 SW4 140 058B EVQ PB2 05K MATUSHITA NON 12 SW5 140 058B EVQ PB2 05K MATUSHITA NON 12 SW6 140 058B EVQ PB2 05K MATUSHITA NON 12 SW7 140 058B EVQ PB2 05K MATUSHITA NON 12 SW8 140 058B EVQ PB2 05K MATUSHITA NON 12 S...

Page 35: ... Red 1 input HD Sync Signal detector Green 1 input Ground Blue 1 input Ground Red 2 input Ground Green 2 input Ground Blue 2 input VD 1 input HD 1 input HD 2 input HD output Red output Vcc Green output Composite video input Sync on Green Composite sync output CTL H IN L IN2 Blue output VD output VD 2 input 1 24 BLOCK DIAGRAM ...

Page 36: ...nd Measure ment Test Pattern Generator Triple ADC and PLL Ultra Reliable DVI Rx Clock Generation 14 318 MHz Grystal Reference 8 16 24 bit video 4 4 4 4 2 2 CCIR656 8 16 bit video 4 2 2 CCIR656 DVI Compliant Input DDC2Bi DVI DDC2Bi analog Analog RGB Input Image Capture and Measure ment Video Shrink Filter Motion Adapt 3 2 2 2 detection OSD Controller Video Zoom Filter Frame Store Control DDR SDRAM ...

Page 37: ...SCHEMATIC DIAGRAM 37 1 TUNER AV PC INPUT ...

Page 38: ... 38 2 VIDEO DEC CAPITION ...

Page 39: ... 39 3 FLI2310 HY57V643220 ...

Page 40: ... 40 4 SCALER GM1601 ...

Page 41: ... 41 5 AUDIO CTL AMP RS232 ...

Page 42: ... 42 6 POWER CONNECTOR ...

Page 43: ... 43 7 TUNER ...

Page 44: ... 44 8 AV IN OUT JACK ...

Page 45: ... 45 9 KEY CONTROL ...

Page 46: ...Jan 2004 P NO 3828TSL093C Printed in Korea ...

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