LG W1941S free download

File name W1941S Service Manual.pdf

Internal Use Only Website:http://biz.LGservice.com E-mail:http://www.LGEservice.com/techsup.html COLOR MONITOR SERVICE MANUAL CHASSIS NO. : LM84K MODEL: ( W1941S(W1941S-PFT.A***QF) ) **Same model for Service CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. CONTENTS SPECIFICATIONS ... 2 PRECAUTIONS ... 3 TIMING CHART ... 7 DISASSEMBLY ... 8 BLOCK DIAGRAM ... 9 DESCRIPTION OF BLOCK DIAGRAM...11 ADJUSTMENT ... 12 TROUBLESHOOTING GUIDE ... 14 WIRING DIAGRAM ... 18 EXPLODED VIEW...19 REPLACEMENT PARTS LIST ...21 SCHEMATIC DIAGRAM ... 25 SPECIFICATIONS 1. LCD CHARACTERISTICS Type : TFT Color LCD Module Active Display Area : 18.5 inch diagonal Pixel Pitch : 0.10*RGB (H) x 0.30 (V)mm Size : 430.4(H) x 254.6(V) x 13.0(D) Color Depth : 16.7M colors Electrical Interface : LVDS Surface Treatment : Anti-Glare, Hard Coating(3H) Operating Mode : Transmissive mode,Normally White Backlight Unit : 2 CCFL 2. OPTICAL CHARACTERISTICS 2-1. Viewing Angle by Contrast Ratio 10 Left : -88°(Typ) Top : -85°(Typ) 2-2. Luminance Right : +88°(Typ) Bottom : +85°(Typ) : 180(Typ) (Typ. ±30) : 250(min), 300(Typ)-6500K : 150(min)-9300K : 6000(min) DFC -> 8000 : 1(Typ) 4. MAX. RESOLUTION Analog : 1360 x 768@60Hz 5. POWER SUPPLY 5-1. Power Adaptor(Built-in Power) Input : AC 100-240V~, 50/60Hz, 0.8A 5-2. Power Consumption MODE POWER ON (NORMAL) STAND BY SUSPEND DPMS OFF POWER S/W OFF H/V SYNC VIDEO POWER CONSUMPTION LED COLOR ON/ON OFF/ON ON/OFF OFF/OFF ACTIVE OFF OFF OFF less than 24 W(max) less than 21 W(typ) less than 1 W less than 1 W less than 1 W less than 1 W BLUE AMBER AMBER AMBER OFF 2-3. Contrast Ratio 6. ENVIRONMENT 6-1. Operating Temperature : 10°C~35°C (50°F~95°F) 6-2. Relative Humidity : 10%~80% (Non-condensing) 6-3. MTBF : 50,000 HRS with 90% Confidence level Lamp Life : 40,000 Hours (Min) 7. DIMENSIONS (with TILT/SWIVEL) Width Depth Height : 448.4 mm (17.65'') : 198.4 mm (7.81'') : 357.9 mm (14.09'') 3. SIGNAL (Refer to the Timing Chart) 3-1. Sync Signal · Type : Separate Sync, SOG 3-2. Video Input Signal 1) Type 2) Voltage Level a) Color 0, 0 b) Color 7, 0 c) Color 15, 0 3) Input Impedance 3-3. Operating Frequency Horizontal Vertical : R, G, B Analog : 0~0.71 V : 0 Vp-p : 0.467 Vp-p : 0.714 Vp-p : 75 : 30 ~ 61kHz : 56 ~ 75Hz 8. WEIGHT (with TILT/SWIVEL) Net. Weight Gross Weight : 2.9 kg (6.44 lbs) : 3.6 kg (8 lbs) Copyright 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes -2- LGE Internal Use