LG L1950B, Руководство по обслуживанию

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CONTENTS
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 4
TIMING CHART ....................................................... 8
DISASSEMBLY ....................................................... 9
BLOCK DIAGRAM ................................................. 10
DESCRIPTION OF BLOCK DIAGRAM....................11
ADJUSTMENT ...................................................... 13 SERVICE OSD ...................................................... 14
TROUBLESHOOTING GUIDE .............................. 15
WIRING DIAGRAM ................................................19
EXPLODED VIEW...................................................20
REPLACEMENT PARTS LIST ...............................22
SCHEMATIC DIAGRAM ......................................... 24
SPECIFICATIONS
1. LCD CHARACTERISTICS
Type : TFT Color LCD Module
Active Display Area : 17inch diagonal - L1750B
: 19inch diagonal - L1950B
Pixel Pitch : 0.264(H) x 0.264(V) - L1750B
: 0.294(H) x 0.294(V) - L1950B
Size : 358.5(W) x 296.5(H) x 17.0(D) - L1750B
: 404.2(W) x 330(H) x 22.0(D) - L1950B
Color Depth :16.2M colors
Electrical Interface : LVDS
Surface Treatment : Anti-Glare, Hard Coating(3H)
Operating Mode : Normally White, Transmissive mode
Backlight Unit : 4-CCFL (Cold Cathode Fluorescent Lamp)
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio
≥
10
L1750B
Left : -60°(min.), -70(Typ) Right : +60°(min.), +70(Typ)
Top :+45°(min.), +60(Typ) Bottom : -50°(min.), -60(Typ)
L1950B
Left : -70°(min.), -80(Typ) Right : +70°(min., +80(Typ)
Top :+75°(min.), +85(Typ) Bottom : -75°(min., -85(Typ)
2-2. Luminance : 185(min.), 250(Typ)
2-3. Contrast Ratio : 300(min.), 450(Typ) - L1750B
: 300(min.), 500(Typ) - L1950B
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
• Type : Separate Sync, Digital, SOG (Sync On Green)
3-2. Video Input Signal
1) Type : R, G, B Analog
2) Voltage Level : 0~0.7 V
a) Color 0, 0 : 0 Vp-p
b) Color 7, 0 : 0.35 Vp-p
c) Color 15, 0 : 0.7 Vp-p
3) Input Impedance : 75
Ω
3-3. Operating Frequency
Horizontal(Analog) : 30 ~ 83kHz
Horizontal(Digital) : 30 ~ 71kHz
Vertical : 56 ~ 75Hz
4. MAX. RESOLUTION
D-sub Analog : 1280 x 1024@75Hz
DVI Digital : 1280 x 1024@60Hz
5. POWER SUPPLY
5-1. Power Adaptor(Built-in Power)
Input : AC 100~240V, 50/60Hz , 1.0A
5-2. Power Consumption
6. ENVIRONMENT
6-1. Operating Temperature : 10°C~35°C
6-2. Relative Humidity : 10%~80%
6-3. MTBF
: 50,000 HRS with 90% Confidence level
Lamp Life : 50,000 Hours(Min) - L1750B
: 40,000 Hours(Min) - L1950B
7. DIMENSIONS (with TILT/SWIVEL)
L1750B
Width
: 368 mm (14.49'')
Depth : 242.6 mm (9.55'')
Height : 421.8 mm (16.61'')
L1950B
Width
: 413 mm (16.26'')
Depth : 242.6 mm (9.55'')
Height : 437.2 mm (17.21'')
8. WEIGHT (with TILT/SWIVEL)
L1750B
Net. Weight
: 6.0kg (13.23 lbs)
Gross Weight : 7.9kg (17.42 lbs)
L1950B
Net. Weight
: 6.7kg (14.77 lbs)
Gross Weight : 9.4kg (20.73 lbs)
MODE
POWER ON (NORMAL)
STAND-BY
SUSPEND
DPMS OFF
POWER S/W OFF
H/V SYNC
ON/ON
OFF/ON
ON/OFF
OFF/OFF
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POWER CONSUMPTION
less than 35 W-L1750B
less than 39 W-L1950B
less than 1 W
less than 1 W
less than 1 W
less than 1W
LED COLOR
GREEN
AMBER
AMBER
AMBER
OFF
VIDEO
ACTIVE
OFF
OFF
OFF
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