Table Of Contents; Specifications - LG FLATRON L1721B Service Manual

SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 7
BLOCK DIAGRAM ................................................... 8
DESCRIPTION OF BLOCK DIAGRAM.....................9
ADJUSTMENT ...................................................... 13
1. LCD CHARACTERISTICS
Type : TFT Color LCD Module
Active Display Area : 17 inch diagonal - L1721B
: 19 inch diagonal - L1921B
Pixel Pitch : 0.264 (H) x 0.264 (V) - L1721B
: 0.294 (H) x 0.294 (V) - L1921B
Size : 358.5 (H) x 296.5 (V) x 17.0 (D) - L1721B
: 404.2 (H) x 330 (V) x 20.0 (D) - L1921B
Color Depth : 16.2M colors - L1721B
: 8bits,16,777,216 colors - L1921B
Electrical Interface : LVDS
Surface Treatment : Hard-coating(3H), Anti-Glare
Operating Mode : Normally White, Transmissive mode - L1721B
: Normally Black, Transmissive mode - L1921B
Backlight Unit : 4-CCFL (Cold Cathode Fluorescent Lamp)
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio ≥ 10
L1721B
Left : -60° min., -70°(Typ) Right
Top :+45° min., +60°(Typ) Bottom : -50°min., -60°(Typ)
L1921B
Left : -85° min., -88°(Typ) Right
Top :+85° min., +88°(Typ) Bottom : -85°min., -88°(Typ)
2-2. Luminance : 200(min), 250(Typ)
2-3. Contrast Ratio : 300(min), 450(Typ) - L1721B
: 350(min), 500(Typ) - L1921B
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
• Type : Separate Sync, Composite Sync
SOG (Sync On Green)
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

SPECIFICATIONS

: +60° min., +70°(Typ)
: +85° min., +88°(Typ)
: R, G, B Analog
: 0~0.71 V
: 0 Vp-p
: 0.467 Vp-p
: 0.714 Vp-p
: 75 Ω
: 30 ~ 83kHz
: 56 ~ 75Hz
CONTENTS
SERVICE OSD ...................................................... 14
TROUBLESHOOTING GUIDE .............................. 15
WIRING DIAGRAM ............................................... 19
EXPLODED VIEW...................................................20
REPLACEMENT PARTS LIST ...............................24
SCHEMATIC DIAGRAM ......................................... 26
4. Max. Resolution
Analog
5. POWER SUPPLY
5-1. Power : AC 100-240V~, 50/60Hz , 1.0A
5-2. Power Consumption
MODE
POWER ON (NORMAL)
STAND-BY
SUSPEND
DPMS OFF
6. ENVIRONMENT
6-1. Operating Temperature: 10°C~35°C (50°F~95°F)
6-2. Relative Humidity
6-3. MTBF
Lamp Life
7. DIMENSIONS (with TILT/SWIVEL)
L1721B
Width
Depth
Height
L1921B
Width
Depth
Height
8. WEIGHT (with TILT/SWIVEL)
L1721B
Net. Weight
Gross Weight
L1921B
Net. Weight
Gross Weight
- 2 -
: 1280 x 1024 / 75Hz
H/V SYNC VIDEO POWER CONSUMPTION
less than 43 W-L1721B
ON/ON
ACTIVE
less than 45 W-L1921B
OFF/ON OFF less than 1 W
ON/OFF less than 1 W
OFF
OFF
OFF/OFF less than 1 W
(Ambient)
: 10%~80% (Non-condensing)
: 50,000 HRS with 90% Confidence level
: 50,000 Hours(Min)
: 394 mm (15.51'')
: 232 mm (9.13'')
: 379 mm (14.92'')
: 440 mm (17.32'')
: 261 mm (10.28'')
: 423 mm (16.65'')
: 4.5 kg (9.92 lbs)
: 6.5 kg (14.33 lbs)
: 6.5 kg (14.33 lbs)
: 9.5 kg (20.95 lbs)
LED COLOR
BLUE
AMBER
AMBER
AMBER