LG Flatron W1934S, Service Manual

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2
CONTENTS
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 7
DISASSEMBLY........................................................ 9
BLOCK DIAGRAM...................................................11
DISCRIPTION OF BLOCK DIAGRAM ................... 12
ADJUSTMENT ...................................................... 14 SERVICE OSD ............................................... .........16
TROUBLESHOOTING GUIDE .............................. 17
WIRING DIAGRAM ............................................... 24
EXPLODED VIEW ................................................... 25
REPLACEMENT PARTS LIST ............................... 27
SCHEMATIC DIAGRAM ......................................... 43
SPECIFICATIONS
1. LCD CHARACTERISTICS
Type : TFT Color LCD Module
Active Display Area : 19 inch
Pixel Pitch : 0.285(H) x 0.285(V)
Color Depth : 16.7M colors
3-3. Operating Frequency: 40~80 KHz
4. Max. Resolution
D-sub Analog: 1440 x 900 @ 75Hz
5. POWER SUPPLY
5-1. Power: AC 90~264V, 47.5~63Hz, <0.8A
5-2. Power Consumption
Size : 410.4mm (H)*256.5mm (V)
Electrical Interface : LVDS
Surface Treatment : Hard-coating (3H),
Haze=25% Anti-Glare
treatment
Operating Mode : Normally White, Transmissive mode
Backlight Unit : Top/Bottom edge side 4-CCFL
(Cold Cathode Fluorescent Lamp)
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio
(a) For InnoLux MT190AW01 V.5
Left 70°/Right 70°; Top 70°/Bottom 70°
at Min CR ≥ 10
(b) For CMO M190A1-L07 panel
Left 75°/Right75°; Top 70°/Bottom 70°
at Min CR ≥ 10
(c) For IVO M190MWW1-201 panel
H 140(min),160(typ),V 140(min) 160(typ)CR ≥ 10
2-2. Luminance
(a) For InnoLux MT190AW01 V.5 panel: 300cd/m
2
(Typ.)
220cd/m
2
(Min.) (6500k);170 cd/m
2
(Min.)(9300k)
(b) For CMO M190A1-L07 panel: 300cd/m
2
(Typ.)
220cd/m
2
(Min.) (6500k);170 cd/m
2
(Min.)(9300k)
(b) For IVO M190MWW1-201 panel: 300cd/m
2
(Typ.)
220cd/m
2
(Min.) (6500k);170 cd/m
2
(Min.)(9300k)
2-3. Contrast Ratio
(a) For InnoLux MT190AW01 V.5 1000:1 Typical
(b) For CMO M190A1-L07 panel: 1000:1 Typical
(c) For M190MWW1-201 panel: 800:1 Typical
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal Type : Separate Sync, Composite, and
SOG (Sync On Green)
3-2. Video Input Signal
1) Type : R, G, B Analog
2) Voltage Level : 0~0.71 V
3) Input Impedance : 75
6. ENVIRONMENT
6-1. Operating Temperature : 0°C to 40°C
6-2. Relative Humidity
: 20% to 90%
6-3. MTBF : 60,000 HRS with 90% Confidence
Lamp Life : 60,000 Hours (Min)
7. DIMENSIONS (with TILT/SWIVEL)
Width: 434.8mm
Depth: 180mm (W Base), 75.5mm (W/O
Base)
Height: 370mm (W Base), 287.8mm (W/O Base)
8. WEIGHT (with TILT/SWIVEL)
Net. Weight : 3.615+/-0.5Kg(IVO);3.655+/-
0.5Kg(V5);3.355+/-0.5Kg(INL)
Gross Weight: 4.7+/-0.5Kg (IVO); 4.7+/-0.5Kg (V5); 4.4+/-
0.5Kg (INL)