LG Flatron L226WTM-SFQ.A**GQF Скачать руководство пользователя страница 18 | Manualshive

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4. TROUBLE IN DPM

TROUBLE IN DPM

TROUBLE IN IC501

CHECK PC
PC IS GOING
INTO DPM MODE

NO

CHECK H/V SYNC LINE

NO

YES

CHECK R720 AND

R726, SYNC

APPEARED?

CHECK

IC501 PIN89,90

SYNC PULSE

YES

1

H-SYNC

2

V-SYNC

Waveforms

1

2

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Содержание Flatron L226WTM-SFQ.A**GQF

Страница 1: ...UAL Website 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 LM62B MODEL L226WTM L226WTM SFQ A GQF Same model for Service ...

Страница 2: ... Refer to the Timing Chart 3 1 Sync Signal Type Separate 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 ENVIRO...

Страница 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 ...

Страница 4: ...e 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 please wipe i...

Страница 5: ...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 ...

Страница 6: ...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...

Страница 7: ...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...

Страница 8: ...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 x 1024 V Lines 75 035 1066 1024 1 3 38 11 H Pixels 119 6...

Страница 9: ...d push the right 1 Remove the screws 1 Disassemble PCB 2 Put the front face down Disassemble PCB 3 4 5 6 7 Disassemble back cover 1 Pull the front cover upward 2 Then let the all latches are separated with jig 4 5 8 Remove the screws 2 ...

Страница 10: ...lash ROM D Sub DVI D DVI TMDS KEY 1 8V 1 8V 3 3V Module SDA SCL EEPROM EDID EEPROM System 3 3V ADC TMDS Rx Scaler MStarACE LVDS Tx OSD MCU SSC Line Buffer 15V GM5726H EEPROM EDID 1 1 1 1 5 5 5 5 V V V V A A A A u u u u d d d d i i i i o o o o 1 1 1 1 2 2 2 2 V V V V Regulator L226WTM BLOCK DIAGRAM ...

Страница 11: ...lution 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 15V is provided for inverter in L226WT WTM 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 DC 15V to AC 820Vrms and operates back light...

Страница 12: ...ough 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 achieve the dc ou...

Страница 13: ...m 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 Update button c Click Write button ...

Страница 14: ...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 module d NVRAM INIT EEPROM initi...

Страница 15: ... POWER BOARD AND FIND OUT A SHORT POINT AS OPENING EACH POWER LINE CHECK IC601 1 8V IC602 3 3V LINE NO CHECK CRYSTAL X501 YES YES YES CHECK P702 VOLTAGE PIN5 PIN6 5V IS IC601 PIN2 1 8V IC602 PIN2 3 3V CHECK IC501 PIN108 PULSE 1 2 1 3 1 4 Waveforms 1 P702 5 6 2 IC601 2 3 IC602 2 4 IC501 108 ...

Страница 16: ...D CHECK POWER BOARD LIPS CHECK P702 VOLTAGE PIN5 6 5V NO NO NO NO 1 CONFIRM BRIGHTNESS OSD CONTRL STATUS 2 CHECK MICOM DIM ADJ PORT CHECK P702 PIN10 POWER BOARD LIPS CHECK PULSE AS CONTACTING PROBE TO THE LAMP WIRE OF THE LCD MODULE REPLACE LCD MODULE YES 1 2 3 YES YES YES Waveforms 1 P702 5 6 2 P702 10 3 LAMP CURRENT ...

Страница 17: ...01 CHECK IC501 PIN2 3 3V PIN17 1 8V NO NO NO CHECK IC601 1 8V IC602 3 3V U501 PIN 108 109 14 3MHZ CHECK CONNECTION LINE FROM D SUB TO IC501 TROUBLE IN CABLE OR LCD MODULE YES YES NO RASTER OSD IS NOT DISPLAYED CHECK IC501 PIN89 H SYNC AND PIN90 V SYNC IS PULSE APPEARED AT SIGNAL PINS YES 1 Waveforms 4 IC501 108 ...

Страница 18: ...UBLE IN DPM TROUBLE IN DPM TROUBLE IN IC501 CHECK PC PC IS GOING INTO DPM MODE NO CHECK H V SYNC LINE NO YES CHECK R720 AND R726 SYNC APPEARED CHECK IC501 PIN89 90 SYNC PULSE YES 1 H SYNC 2 V SYNC Waveforms 1 2 ...

Страница 19: ...WIRING DIAGRAM 19 6631900109A 28P 6P 4P 11P 6631V12031F 6631T12006E 6631T20034P 6401900160B ...

Страница 20: ...EXPLODED VIEW 20 300 520 310 530 430 330 320 900 910 920 200 210 500 510 420 410 120 400 174 ...

Страница 21: ...ens MOLD PMMA BenQ LENS L225W Eagel Eye ACQ31701702 Cover Assembly Rear L225W LM62A 23 Backcover CMO DVI D SUB SPK MGJ33948901 Plate Metal PRESS SECC 0 8 SUPPORTER SECC L225W Stand Bracket Metal ADV31702002 Frame Assembly L225W LM62A 23 Rear shield assy DVI D SUB SPK ADV32121501 Frame Assembly L226W LM62A 23 Lamp shield assy EBU35030501 Main Total Assembly 12481010 L226WTM BRAND LM 62B LG ELECTRON...

Страница 22: ... C709 0CK104CK56A 0603B104K500CT 100nF 10 50V C710 0CC680CK41A C1608C0G1H680JT 68pF 5 50V C711 0CC680CK41A C1608C0G1H680JT 68pF 5 50V DATE 2006 10 23 S AL LOC NO PART NO DESCRIPTION SPECIFICATION C712 0CK104CK56A 0603B104K500CT 100nF 10 50V C713 0CK104CK56A 0603B104K500CT 100nF 10 50V C714 0CK104CK56A 0603B104K500CT 100nF 10 50V C715 0CK104CK56A 0603B104K500CT 100nF 10 50V C716 0CK104CK56A 0603B10...

Страница 23: ...0RJ0102D677 MCR03EZPJ100 10OHM 5 1 10W R714 0RJ1001D677 MCR03EZPJ102 1KOHM 5 1 10W R715 0RJ1500D677 MCR03EZPJ151 150OHM 5 1 10W R716 0RJ0000D677 MCR03EZPJ000 0OHM 5 1 10W 1 R717 0RJ0332D677 MCR03EZPJ330 33OHM 5 1 10W R719 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10 R720 0RJ0682D677 MCR03EZPJ680 68OHM 5 1 10W R721 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10 R722 0RJ4701D677 MCR03EZPJ472 4 7KOHM 5 1 10 R723...

Страница 24: ...SCHEMATIC DIAGRAM 24 1 SCALER ...

Страница 25: ... 25 2 POWER ...

Страница 26: ... 26 3 WAFER ...

Страница 27: ... 27 4 CONTROL ...

Страница 28: ...Oct 2006 P NO MFL301055 Printed in Korea ...

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