LG FLATRON L1719S Service Manual Download Page 9 | Manualshive

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DISASSEMBLY-Stand

[TYPE A]

1. In assembly state, Twist Stand Body to

Right side.

2. Pull Stand and Separate Stand from

Monitor set.

3. Push the four latches on the bottom to the

outside and Separate Stand Body & Base.

(Reference the #3-2)

# 1

# 2

# 3-1

# 3-2

# 4

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Summary of Contents for FLATRON L1719S

Page 1: ...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 82 MODEL L1719S L1719S FS A EP L1919S L1919S FS A EP To apply the MSTAR Chip Same model for Service ...

Page 2: ...tical 56 75Hz 4 Max Resolution D sub Analog 1280 x 1024 75Hz 5 POWER SUPPLY 5 1 Power AC 100 240V 50 60Hz 0 6A 5 2 Power Consumption 6 ENVIRONMENT 6 1 Operating Temperature 10 C 35 C 50 F 95 F Ambient 6 2 Relative Humidity 10 80 Non condensing 6 3 MTBF 50 000 HRS with 90 Confidence Lamp Life 50 000 Hours Min 7 DIMENSIONS with TILT SWIVEL L1719S Width 364 0 mm 14 33 Depth 180 mm 7 09 Height 378 0 m...

Page 3: ... 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 circuit within the module If the surface of panel become dirty pl...

Page 4: ...st receiver ground lead to the receiver chassis ground before connecting the test receiver positive lead Always remove the test receiver ground lead last 9 Use with this receiver only the test fixtures specified in this service manual CAUTION Do not connect the test fixture ground strap to any heat sink in this receiver Electrostatically Sensitive ES Devices Some semiconductor solid state devices ...

Page 5: ...tip as the solder melts 2 Draw away the melted solder with an anti static suction type solder removal device or with solder braid before removing the IC Replacement 1 Carefully insert the replacement IC in the circuit board 2 Carefully bend each IC lead against the circuit foil pad and solder it 3 Clean the soldered areas with a small wire bristle brush It is not necessary to reapply acrylic coati...

Page 6: ...onnection 4 Route the jumper wire along the path of the out away copper pattern and let it overlap the previously scraped end of the good copper pattern Solder the overlapped area and clip off any excess jumper wire At Other Connections Use the following technique to repair the defective copper pattern at connections other than IC Pins This technique involves the installation of a jumper wire on t...

Page 7: ...ls 57 283 49 725 1152 832 32 64 224 832 x 624 V Lines 74 55 667 624 1 3 39 8 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 0 806 768 3 6 29 9 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 10 H Pixels 100 0 68 681 1456 1152 32 128 144 1152 x 870 V Lines 75 062 915 870 3 3 39 11 H Pixels 92 978 61 805 1504 1152 18 134 200 1152 x 900 V Lines 65 9...

Page 8: ......

Page 9: ... TYPE A 1 In assembly state Twist Stand Body to Right side 2 Pull Stand and Separate Stand from Monitor set 3 Push the four latches on the bottom to the outside and Separate Stand Body Base Reference the 3 2 1 2 3 1 3 2 4 ...

Page 10: ... TYPE B 1 In assembly state Twist Stand Body to Right side 2 Pull Stand and Separate Stand from Monitor set 3 Push the four latches on the bottom to the outside and Separate Stand Body Base Reference the 3 2 1 2 3 1 3 2 4 ...

Page 11: ... E 1 S D V L B G R g o l a n A b u S D l o r t n o C y e K o T V 5 V 3 3 r o t a l u g e R r o t a l u g e R V 3 3 V 8 1 n o i s r e v C D O y l n o B G R l a t i g i D D I V D r e t r e v n I r e t r e v n I r e t p a d A V 8 1 S D M T S D M T U C M U C M C D A C D A r e l a c S r e l a c S L L P L L P D S O D S O V 2 1 y r o m e m h s a l F y r o m e m h s a l F ...

Page 12: ...trol IC P ch N ch Inverter Trans SMPS Lamp Current Feedback Over Voltage Protection Power Control IC Feedback Line Filter L N Drive Block 12V 13V 5V Inverter On OFF 3 3V Dimming Lamp Current Control Aux Drive Start Module Vcc Main Board Scaler DC DC converter 12V 5V ...

Page 13: ...n signal and outputs 8 bit R G B signal to transmitter 2 Power Part This part consists of the one 3 3V and one 1 8V regulators to convert power which is provided 5V in Power board 12V is provided for inverter 5V is provided for LCD panel Also 5V is converted 3 3V and 1 8V by regulator Converted power is provided for IC in the main board The inverter converts from DC12V to AC 700Vrms and operates b...

Page 14: ...DC voltage through a bridge rectifier and a bulk capacitor 3 Energy Transfer This part function is for transfer the primary energy to secondary through a power transformer 4 Output rectifier and filter This part function is to make a pulse width modulation control and to provide the driver signal to power switch to adjust the duty cycle during different AC input and output loading condition to ach...

Page 15: ... 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 button 2 EDID Read Write 1 Run WinEDID exe 2 Edit Week of Manufacture Year of Manufacture Serial Number a Input User Info Data b Click Update button c Click Write button ...

Page 16: ...display 2 Wait for about 5 seconds and press MENU POWER switch with 1 second interval 3 The SVC OSD menu contains additional menus that the User OSD menu as described below a Auto Color W B balance and Automatically sets the gain and offset value b NVRAM INIT EEPROM initialize 24C08 c CLEAR ETI To initialize using time d AGING Select Aging mode on off e R G B 9300K Allows you to set the R G B 9300...

Page 17: ...RT POINT AS OPENING EACH POWER LINE NO PROBLEM 1 Waveforms U201 96 CHECK KEY CONTROL CONNECTOR ROUTINE CHECK U201 NO NO CHECK 3 3V LINE OPEN CHECK CHECK 3 3V LINE NO CHECK X TAL YES CHECK J703 VOLTAGE PIN5 PIN6 5V CHECK U601 PIN2 VOLTAGE 3 3V IS U201 PIN75 3 3V VOLTAGE CHECK U201 PIN 96 PULSE 1 YES YES YES ...

Page 18: ...OARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK MICOM INV ON OFF PORT 1 CONFIRM BRIGHTNESS OSD CONTRL STATE 2 CHECK MICOM DIM ADJ PORT LIPS J703 PIN5 PIN6 5V J703 PIN9 5V J703 PIN10 5V CHECK PULSE AS CONTACTING SCOPE PROBE TO CAUTION LABEL CONTACT PROBE TO CAUTION LABEL CAN YOU SEE PULSE AT YOUR SCOPE YES YES YES YES ...

Page 19: ...CHECK C509 C510 SOLDERING CONDITION 2 CHECK X501 3 TROUBLE IN U201 CHECK CONNECTION LINE FROM D SUB TO U201 U201 PIN96 97 OSCILLATE AS 14 31MHZ U201 PIN27 IS 48KHz H SYNC PIN28 IS 60Hz V SYNC IS PULSE APPEARED AT SIGNAL PINS AT MODE 12 1 2 1 2 Waveforms U201 96 97 U201 27 H SYNC 2 U201 28 V SYNC YES YES YES U201 PIN 16 75 3 3V ...

Page 20: ...ROUBLE IN DPM TROUBLE IN DPM NO NO TROUBLE IN U201 CHECK PC PC IS NOT GOING INTO DPM OFF MODE CHECK H V SYNC LINE CHECK R730 R731 CHECK U201 PIN 27 28 SYNC PULSE 3 3 Waveforms R442 H Sync 3 R443 V Sync YES YES ...

Page 21: ...e NO NO Check BD101 Check U101 Pin7 9 10V Check D102 Trouble in Q101 NO Trouble in D201 D202 YES CHECK Fuse F101 OK CHECK C101 Voltage AC110V 160Vdc AC220V 304Vdc CHECK U101 Pin6 Waveform Square wave Come out Check Q101 Drain Waveform Check D201 D202 D203 Voltage YES YES YES YES NO ...

Page 22: ...302 Check the waveform of U301 Pin1 15 Check the waveform of U301 Pin2 3 NO If waveform is no problem Check D302 D308 Or Trouble in U303 U304 YES CHECK P201 Pin9 3 3V Check U301 Pin2 5V Check U301 Pin6 VSEN Less than 3V Check U301 Pin12 SSTCMT Less than 1V Check U303 U304 Drain waveform YES YES YES NO ...

Page 23: ... 22 WIRING DIAGRAM 11P 6P 3P 30P 6631900011H 6631T20023J EAD37414501 17 EAD37413101 19 6631T20010E ...

Page 24: ... 23 EXPLODED VIEW 010 040 060 020 070 080 100 110 130 050 170 160 190 180 140 150 030 ...

Page 25: ...60 160 lamp wire length 150mm CHUNGHWA PICTURE TUBES LT ACQ33172001 BACK COVER ASSY ANALOG FOR LPL CI TLL1 2 3 ACQ33172002 BACK COVER ASSY ANALOG FOR AUO 5ms ACQ33172003 BACK COVER ASSY ANALOG FOR HYDIS ACQ33172005 BACK COVER ASSY ANALOG FOR CPT 040 3043900045F BASE L1x19 MB03CD L1x19 STAND BASE ASSY ND LOCAL 050 35509K0267A L1719 STAND BODY COVER 060 3520900044A LED LX19 PC NON LENS 49509K0266A S...

Page 26: ... COVER ASSY ANALOG FOR AUO 5ms ACQ33163604 BACK COVER ASSY ANALOG FOR HSD 040 3043900045F BASE L1x19 MB03CD L1x19 STAND BASE ASSY ND LOCAL 050 35509K0268A L1919 STAND BODY COVER 060 3520900044A LED LX19 PC NON LENS 49509K0267F PRESS SPTE C 0 3 LAMP SPTE SHI MGJ37924403 PRESS SPTE 0 3 LAMP SPTE SHIELD 19 FOR LPL CI MODULE ND LOCAL EBR37001701 CONTROL T T LM72A BAIKAL II 19 INCH GREEN RD 19 SERIAL E...

Page 27: ...ILKOR ELECTRONICS C518 0CK104CK56A 0603B104K500CT 100nF 10 50V X7R 55TO 125C 1608 TP PILKOR ELECTRONICS C519 0CK104CK56A 0603B104K500CT 100nF 10 50V X7R 55TO 125C 1608 TP PILKOR ELECTRONICS C520 0CK104CK56A 0603B104K500CT 100nF 10 50V X7R 55TO 125C 1608 TP PILKOR ELECTRONICS C521 0CK104CK56A 0603B104K500CT 100nF 10 50V X7R 55TO 125C 1608 TP PILKOR ELECTRONICS C522 0CK104CK56A 0603B104K500CT 100nF ...

Page 28: ...ST 8P WINBOND ELECTRONICS U503 0IMMR00203A FM24C08 8KBIT 1KX8BIT 2 7VTO5 5V 100NSEC SOIC R TP 8P FAIRCHILD SEMICONDUCTOR CORP U601 0IPMGA0010A AZ1117H 3 3 4 75TO10V 3 3V 0W SOT223 R TP 3P ADVANCED ANALOG CIRCUITS U602 0IPMG00049A AZ1117H 1 8TR E1 H13A 3 2TO10V 1 8V 0W SOT223 R TP 3P ADVANCED ANALOG CIRCUITS Q501 0TRKE80046A 2N3904S NPN 6V 60V 40V 200MA 50NA 100TO300 350MW SOT23 R TP 3P KEC CORPERA...

Page 29: ...608 R TP ROHM R708 0RJ1000D677 MCR03EZPJ101 100OHM 5 1 10W 1608 R TP ROHM R709 0RJ2001D677 MCR03EZPJ202 2KOHM 5 1 10W 1608 R TP ROHM R710 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R TP ROHM R711 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R TP ROHM R726 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R TP ROHM R727 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10W 1608 R TP ROHM R728 0RJ0332D677 MCR03E...

Page 30: ...000uF 20 16V 1 4A 40TO 105C GP 2000HR 10X20MM 5MM STRAIGHT TP C206 0CZZ9ST021A EGF108M1EG20TCSA 1000uF 20 25V 1 4A 40TO 105C GP 2000HR 10X20MM 5MM STRAIGHT TP C207 0CZZ9ST019A EGF477M1EG16TCSA 470uF 20 25V 1 21A 40TO 105C GP 2000HR 10X16MM 5MM STRAIGHT TP C208 0CKZTTA002B DG3AHR331K959 330pF 10 1000V Y5R 25TO 85C 7 5X4 5MM 5MM TP C208 0CKZTTA002E DG3AHR102K959 1nF 10 1000V Y5R 25TO 85C 9 5X4 5MM 5...

Page 31: ...PG63L0E0 100pF 10 250V Y5P 25TO 85C 6 5X5MM 10MM TP CY102 0CZZ9ST024A DCF101K26Y5PG63L0E0 100pF 10 250V Y5P 25TO 85C 6 5X5MM 10MM TP CY104 0CZZ9ST023A DCF472M46Y5VG63L0E0 4 7nF 20 250V Y5V 25TO 85C 11 5X5MM 10MM TP D101 0DRDI00234A PR1007 1KV 1 3V 5UA 30A 500NSEC DO41 TA52 2P 1 D102 0DRDI00244A IN4007 L 1KV 1V 5UA 30A 500NSEC DO41 TA52 2P 1 D103 0DSGF00019A 1N4148 1V 100V 150MA 500MA 4NSEC 500MW D...

Page 32: ...NE AXIAL TA52 SMART ELECTRONICS R110 0RX1003K607 RSD02T3J100K 100KOHM 5 2W 12 0X4 0MM AXIAL TA62 R111 0RD0471Q609 RDM94T1J4R70 4 7OHM 5 1 4W 3 2X1 8MM NONE AXIAL TA52 SMART ELECTRONICS R112 0RJ1302E472 MCR10EZHF 1302 13KOHM 1 1 8W 2012 R TP R115 0RJ4703G676 MCR18EZHJ474 470KOHM 5 1 4W 3216 R TP R116 0RJ4703G676 MCR18EZHJ474 470KOHM 5 1 4W 3216 R TP R117 0RH2403D622 MCR10EZHJ244 240KOHM 5 1 8W 2012...

Page 33: ...H1004D622 MCR10EZHJ105 1MOHM 5 1 8W 2012 R TP ROHM R311 0RH5602D422 0805S8F5602T5E 56KOHM 1 1 8W 2012 R TP UNIOHM UNIROYAL ELECTRONICS INDUSTRY CO LTD R312 0RH0512D622 MCR10EZHJ510 51OHM 5 1 8W 2012 R TP ROHM R313 0RH0512D622 MCR10EZHJ510 51OHM 5 1 8W 2012 R TP ROHM R314 0RH0512D622 MCR10EZHJ510 51OHM 5 1 8W 2012 R TP ROHM R319 0RH1004D622 MCR10EZHJ105 1MOHM 5 1 8W 2012 R TP ROHM R320 0RH3002D422 ...

Page 34: ...SCHEMATIC DIAGRAM 1 SCALER 30 ...

Page 35: ... 31 2 POWER WAFER ...

Page 36: ... 32 3 INVERTER ...

Page 37: ... 33 4 POWER 1 3 2 4 ...

Page 38: ...Mar 2007 P NO MFL37893408 Printed in China ...

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