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E-mail:http://www.LGservice.com/techsup.html COLOR MONITOR SERVICE MANUAL MODEL: L222WS (L222WS-SNQ/BNQ.AxxAQP. xx:sales marketing, Mstar scaler, CPT Module) CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. *To apply the MSTAR Chip.
PRECAUTION WARNING WARNING FOR THE SAFETY-RELATED COMPONENT. BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or marked on the schematic diagram and the inverter circuit, must disconnect the AC adapter...
SERVICING PRECAUTIONS CAUTION: Before servicing receivers covered by this 9. Use with this receiver only the test fixtures specified in service manual and its supplements and addenda, read this service manual. and follow the SAFETY PRECAUTIONS on page 3 of this CAUTION: Do not connect the test fixture ground strap publication.
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General Soldering Guidelines Replacement 1. Use a grounded-tip, low-wattage soldering iron and 1. Carefully insert the replacement IC in the circuit board. appropriate tip size and shape that will maintain tip 2. Carefully bend each IC lead against the circuit foil pad and solder it.
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Circuit Board Foil Repair At Other Connections Excessive heat applied to the copper foil of any printed Use the following technique to repair the defective copper circuit board will weaken the adhesive that bonds the foil pattern at connections other than IC Pins. This technique to the circuit board causing the foil to separate from or involves the installation of a jumper wire on the "lift-off"...
TIMING CHART Video Total Sync Front Blanking Sync Active MODE H / V Frequency Period Duration Porch Time Resolution Polarity Clock Time ( E ) ( D ) ( C ) ( B ) ( A ) H(Pixels) 31.468 28.321 V(Lines) 70.08 720 X 400...
DISASSEMBLY-Set Put the monitor on a soft flat. Remove the four screws and disassemble the stand. Disassemble the rear cover from the bezel with Disassemble the connector. a thin card. There are 7 clips on the button & top and 5 clips on the left/right side. Disassemble the bezel.
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Remove the 2 screws. Disassemble the LVDS cable. Main board & power board The panel...
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DISASSEMBLY-Stand Pull the Base 2 ea Latches to inside until losing elasticity. Synchronously, take one finger to push the base. Consequently, pull the stand body directly. Separate Stand Body & Stand Base. Fix Stand Base & Stand Body. -10-...
DESCRIPTION OF BLOCK DIAGRAM 1. Video Controller Part. This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock. The pixel clock for each mode is generated by the PLL. The range of the pixel clock is from 25MHz to 135MHz.
LIPS Board Block Diagram Operation description_LIPS 1. EMI components. This part contains of EMI components to comply with global marketing EMI standards like FCC,VCCI CISPR, the circuit included a line-filter, across line capacitor and of course the primary protection fuse. 2.
ADJUSTMENT Windows EDID V1.0 User Manual 2. EDID Read & Write 1) Run WinEDID.exe Operating System: MS Windows 98, 2000, XP Port Setup: Windows 98 => Doesn’t need setup Windows 2000, XP => Need to Port Setup. This program is available for LCD Monitor only. 1.
SERVICE MODE 1) Turn off the power switch at the front side of the 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) CLEAR ETI: To initialize using time.
TROUBLESHOOTING GUIDE 1. NO POWER No Power (Power Indicator Off) Check the Adapter/Inverter Please reinsert and section make sure the AC of 100-240 is normal Measure U702 Check CN401 or replace PIN2=1.8V U701 U702, U701 PIN2=3.3V Check X201 oscillate Replace X201 waveforms are normal Replace U401 -17-...
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2. NO RASTER (OSD IS NOT DISPLAY)-LIPS No Raster (OSD Is Not Displayed) Check power board and find out a Check U701 short point as penning each power PIN 3 =5V? line Check U701 Check U701 Check C408 PIN 2 =3.3V? 1.
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2. NO RASTER (OSD IS NOT DISPLAY)-MSTAR No Raster (OSD Is Not Displayed) SCALER PIN96 1. Check C221 C222 97 OSCILLATES 2. Check X401 AS 14.318MHZ? 3. TROUBLE IN SCALER IC CHECK CONNECTION SCALER IC LINE FROM D-SUB TO PIN27 H SYNC ? SCALER PIN28 V SYNC? TROUBLE IN CABLE OR...
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4. TROUBLE IN DPM TROUBLE IN DPM SCALER IC PIN27 H SYNC? CHECK H/V SYNC LINE PIN28 V SYNC? TROUBLE IN CABLE OR LCD MODULE -20-...
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5. POWER No Power (Power Indicator Off) Check AC line volt Check AC line 100V or 220V Check F901, BD901 Check the voltage of C905(+) Check voltage of Check R909, D902, C901 pin7 C907,C908,IC901 Check the output of Check D901,L905,Q903,R914 IC901 pin6 1) Check IC901,T901 2) Check D906, D907, ZD901, ZD902, ZD903...
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6. RASTER NO Raster (Lamp Off) Check C811 (+) Check power section =12V Check Interface section or Check ON/OFF main board signal Check Q801 Q802 Q803 CheckIC801 pin ZD801 2=5V? Check IC801 Check IC801 pin 5/pin6 Pin1/pin15 have the output of sawtooth wave at short time Replace IC801 Cut all the pin connector of...
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EXPLODED VIEW PARTS LIST Ref. No. TPV part no. LGE part no. Description A34G0462ABNA1B0130 ACQ35565301 Bezel (Front cabinet) Silver color A34G0462 B6A1B0130 ACQ35565302 Bezel (Front cabinet) Black color 750GLCB6WA112M000K EBU41363801 CPT PANEL CLAA220WA01 PWPC7C42CQA1 EBU41368101 CPT POWER BOARD(L222WS LIPS) MAIN METAL FRAME FOR L222WS A15G0259102 ADV35565701 KEY BOARD HARNESS(Main to...
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C926 065G306M3322BP 3300PF 20% C905 067G 31510115K EC 105℃ 100UF M 450V KINGNICHI C923 067G215V1023HS CAP L105℃ 1000UF M 16V C922 067G215V471 3H CAP L105℃ 470UF M 16V C921 067G215V471 4H CAP 105℃ 470UF M 25V C815 067G215V471 4H CAP 105℃ 470UF M 25V C811 067G215V471 4H CAP 105℃...
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C931 065G 2K152 1T GP CERAMIC CAP C930 065G 2K152 1T GP CERAMIC CAP C914 065G 2K152 1T GP CERAMIC CAP C912 065G 2K152 1T GP CERAMIC CAP C907 067G 5152207HT CAP 105℃ 22UF M 50V C925 067G215S10915T3964 EC CAP 1.0uF 450V 8*11mm DIODEs BD901 093G 50460900...