LG Flatron L206WU Service Manual Download Page 22 | Manualshive

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Copyright

2007 LG Electronics. Inc. All right reserved.

Only for training and service purposes

LGE Internal Use Only

CHECK IC303,304,305

NO

YES

IC303_3.3V
IC304_2.5V
IC305_1.8V

CHECK X500

NO

YES

X500=24Mhz

CHECK IC504

NO

YES

IC502 P77(HSYNC)

P78(VSYNC)

CHECK IC502

NO

YES

IC502 P34(2RXC-)

P35(2RXC+)

*IC504

(Video processors_display link

USB =>TLL)

*IC502(Silicon image)

TLL=>TMDS

CHECK IC301,306

NO

YES

IC301=3.3V
IC306=1.5V

CHECK IC702

NO

IC702 P18(PXC-)

*IC702(Analog

switch)

YES

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Summary of Contents for Flatron L206WU

Page 1: ...OR SERVICE MANUAL Website http biz LGservice com CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS NO LM62C MODEL L206WU L206WU WFS A MAP Same model for Service Internal Use Only ...

Page 2: ...eparate Sync SOG Digital 3 2 Video Input Signal 1 Type R G B Analog 2 Voltage Level 0 0 7 V 3 Input Impedance 75 Ω 3 3 Operating Frequency Horizontal 30 83kHz Vertical 56 75Hz 4 MAX RESOLUTION Analog 1680 x 1050 60Hz Digital 1680 x 1050 60Hz 5 POWER SUPPLY 5 1 Power Adaptor Built in Power Input AC 100 240V 50 60Hz 1 2A 5 2 Power Consumption 6 ENVIRONMENT 6 1 Operating Temperature 10 C 35 C 50 F 95...

Page 3: ...ata4 T M D S Data4 DDC Clock DDC Data Analog Vertical Sync 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 Tra...

Page 4: ... 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 circuit within the ...

Page 5: ...eat sinks are correctly installed 8 Always connect the test 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 Sen...

Page 6: ... by gently prying up on the lead with the soldering iron 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 b...

Page 7: ... and carefully crimp it around the IC pin Solder the IC connection 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 ...

Page 8: ...1 3 21 6 H Pixels 65 0 48 363 1344 1024 24 136 160 1024 x 768 V Lines 60 0 806 768 3 6 29 7 H Pixels 78 75 60 123 1312 1024 16 96 176 1024 x 768 V Lines 75 029 800 768 1 3 28 8 H Pixels 108 0 67 500 1600 1152 64 128 256 1152 x 864 V Lines 75 000 900 864 1 3 32 9 H Pixels 108 0 63 981 1688 1280 48 112 248 1280 x 1024 V Lines 60 02 1066 1024 1 3 38 10 H Pixels 135 0 79 976 1688 1280 16 144 248 1280 ...

Page 9: ...rvice purposes LGE Internal Use Only DISASSEMBLY Set Pushing Latch inside Take the stand base from stand body 1 2 Remove the screws Remove the screws 1 4 2 3 5 1 Pull the front cover upward 2 Then let the all latches are separated 3 Put the front face down 6 Disassemble back cover ...

Page 10: ... System 3 3 V EEPROM EDID Crystal 14 318MHz 140Mhz Analog R G B D Sub EEPROM EDID Switch DVI TMDS Dual Interface Engine Display Processing Engine Response Time Enhancement LVDS Panel Interface OSD Clock Generator MCU DRAM T T T T S S S S U U U U M M M M O O O O 5 5 5 5 8 8 8 8 C C C C W W W W H H H H J J J J 3 3 V USB HUB USB2504 USB UP USB DN X2 DL 160 SIL1160 SMI321 Controller Nand Flash 64MB Cr...

Page 11: ... to digital interpolates input to 1680X1050 L206WU resolution signaland 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 15V is provided for inverter in L206WU Also 5V is converted 3 3V and 1 8V by regulator Converted power is provided for IC in the main board The inverter converts...

Page 12: ... is for transfer the input AC voltage to a 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 A...

Page 13: ...need setup Windows 2000 XP Need to Port Setup This program is available for 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 Upda...

Page 14: ...switch at the right side of the display 2 Wait for about 5 seconds and press MENU POWER switch for 1 second interval 3 The SVC OSD menu contains additional menus that the User OSD menu as described below a CLEAR ETI To initialize using time c Auto Color W B balance and Automatically sets the gain and offset value press key for over 3 sec d AGING Select Aging mode on off b Module To select applied ...

Page 15: ...O POWER NO POWER POWER INDICATOR OFF CHECK IC200 NO NO CHECK POWER BOARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK IC702 1 8V IC703 3 3V LINE NO CHECK CRYSTAL X501 YES YES YES CHECK P703 VOLTAGE PIN5 6 5V IS IC302 PIN2 1 8V IC301 PIN2 3 3V CHECK X200 PIN201 PULSE 1 2 1 3 1 4 Waveforms 1 P703 5 6 2 IC302 2 3 IC301 2 4 X200 201 ...

Page 16: ...SD IS NOT DISPLAYED CHECK POWER BOARD LIPS CHECK P703 VOLTAGE PIN5 6 5V NO NO NO NO 1 CONFIRM BRIGHTNESS OSD CONTRL STATUS 2 CHECK SCALER DIM ADJ PORT 3 CHECK SCALER LAMP ADJ PORT CHECK P703 PIN11 POWER BOARD LIPS CHECK PULSE AS CONTACTING PROBE TO THE LAMP WIRE OF THE LCD MODULE REPLACE LCD MODULE YES 1 3 2 4 YES YES YES Waveforms 1 P703 5 6 2 P703 9 4 LAMP CURRENT 3 3 P703 11 Brightness 100 P703...

Page 17: ...7 128 SOLDERING CONDITION 2 CHECK X200 3 TROUBLE IN IC200 CHECK IC200 PIN8 14 20 3 3V PIN21 104 1 8V NO NO NO CHECK IC702 1 8V IC703 3 3V IC200 PIN 127 128 14 3MHZ CHECK CONNECTION LINE FROM D SUB TO IC502 TROUBLE IN CABLE OR LCD MODULE YES YES NO RASTER OSD IS NOT DISPLAYED CHECK IC200 PIN32 H SYNC AND PIN33 V SYNC IS PULSE APPEARED AT SIGNAL PINS YES 1 Waveforms 1 U502 201 ...

Page 18: ...training and service purposes LGE Internal Use Only 4 TROUBLE IN DPM TROUBLE IN DPM TROUBLE IN IC502 CHECK PC PC IS GOING INTO DPM MODE NO CHECK H V SYNC LINE NO YES CHECK R704 AND R705 SYNC APPEARED CHECK IC200 PIN 32 33 SYNC PULSE YES 1 H SYNC 2 V SYNC Waveforms 1 2 ...

Page 19: ...ly for training and service purposes LGE Internal Use Only 5 USB TROUBLE IN AUTOLOAD CHECK IC300 IC602 HUB IC NO YES IC606 P1 5V_USB 5V CHECK IC606 NO YES IC606 P3 VUSB3 3V 3V CHECK PC NO YES IC602 P52 CHECK X601 NO YES X601 24Mhz CHECK IC602 NO IC602 P8 P9 YES ...

Page 20: ...and service purposes LGE Internal Use Only YES CHECK IC601 NO YES IC601 P3 NANWP CHECK PROGRAM WIRTE NO IC605 P12 P37 3 3V CHECK X500 NO X500 12Mhz IC505 NAND Flash memory CHECK IC300 NO YES IC601 P48 5V 5V_USB CHECK IC601 NO YES IC601 P45 1 8V P47 3 3V IC601 Microcontrollers ...

Page 21: ...d Only for training and service purposes LGE Internal Use Only 6 USB NO RASTER CHECK IC300 IC602 HUB IC NO YES IC606 P1 5V_USB 5V CHECK IC606 NO YES IC606 P3 VUSB3 3V 3 3V CHECK PC NO YES IC602 P52 CHECK X601 NO YES X601 24Mhz CHECK IC602 NO IC602 P5 P6 YES ...

Page 22: ...4 305 NO YES IC303_3 3V IC304_2 5V IC305_1 8V CHECK X500 NO YES X500 24Mhz CHECK IC504 NO YES IC502 P77 HSYNC P78 VSYNC CHECK IC502 NO YES IC502 P34 2RXC P35 2RXC IC504 Video processors_display link USB TLL IC502 Silicon image TLL TMDS CHECK IC301 306 NO YES IC301 3 3V IC306 1 5V CHECK IC702 NO IC702 P18 PXC IC702 Analog switch YES ...

Page 23: ...ht reserved Only for training and service purposes LGE Internal Use Only CHECK IC302 NO YES IC302 1 8V CHECK X200 NO X200 14 3Mhz IC200 SCALOR TMDS RGB LVDS YES CHECK IC200 NO P704 P20 YES DRIVER SET UP CHECK PANEL NO USB DISPLAY DRIVER SET UP YES ...

Page 24: ...EXPLODED VIEW 24 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 300 200 LV1 330 410 510 430 420 400 900 930 920 910 520 310 320 500 440 ...

Page 25: ... 32 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only PRINTED CIRCUIT BOARD MAIN TOP MAIN BOTTOM ...

Page 26: ... 33 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only CONTROL ...

Page 27: ...SCHEMATIC DIAGRAM 34 1 SCALER Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 28: ... 35 2 USB DISPLAY Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 29: ... 36 3 DC DC POWER Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 30: ... 37 4 WAFER Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 31: ... 38 5 USB FLASH Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 32: ...Jun 2007 P NO MFL36713676 Printed in Korea ...

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