LG L1753HM, Service Manual

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CONTENTS
1. LCD CHARACTERISTICS
Type : TFT Color LCD Module
Active Display Area : 17 inch - L1753
: 19 inch - L1953
Pixel Pitch : 0.264 (H) x 0.264 (V) - L1753
: 0.294 (H) x 0.294 (V) - L1953
Color Depth : 8bits, 16.2M colors
Size : 358.5 (H) x 296.5 (V) x 17.0(D) - L1753
: 396 (H) x 324 (V) x 17.5(D) - L1953
Electrical Interface : LVDS
Surface Treatment : Hard-coating(3H), Anti-Glare
Operating Mode : Normally White, Transmissive mode
Backlight Unit : 4-CCFL
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio
≥
10
L1753H
Left : -70° min., -80°(Typ) Right : +70° min., +80°(Typ)
Top :+60° min., +75°(Typ) Bottom : -70° min., -85°(Typ)
L1953H
Left : -65° min., -70°(Typ) Right : +65° min., +70°(Typ)
Top :+70° min., +75°(Typ) Bottom : -55° min., -60°(Typ)
2-2. Luminance : 230(min), 300(Typ) (Full White pattern, 0.70V) - 6500K
: 150(min) (Full White pattern, 0.70V) - 9300K
75%(min)
2-3. Contrast Ratio : 600(Typ)
DFC :
20
00 : 1
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
• Type : Separate Sync, Digital, SOG
3-2. Video Input Signal
1) Type : R, G, B Analog
2) Voltage Level : 0~0.71 V
a) Color 0, 0 : 0 Vp-p
b) Color 7, 0 : 0.467Vp-p
c) Color 15, 0 : 0.714Vp-p
3) Input Impedance : 75
Ω
3-3. Operating Frequency
Horizontal : 30 ~ 83kHz
Vertical : 56 ~ 75Hz
4. Max. Resolution
D-sub Analog : 1280 x 1024@75Hz
Digital : 1280 x 1024@60Hz
5. POWER SUPPLY
5-1. Power : AC 100-240V~, 50/60Hz , 0.8A
5-2. Power Consumption
6. ENVIRONMENT
6-1. Operating Temperature : 10°C~35°C (50°F~95°F)
(Ambient)
6-2. Relative Humidity : 10%~80% (Non-condensing)
6-3. MTBF : 50,000 HRS with 90% Confidence
Lamp Life : 50,000 Hours(Min)
7. DIMENSIONS (with TILT/SWIVEL)
L1753
Width : 364.7 mm (15.35'')
Depth : 180.3 mm (9.53'')
Height : 378.1 mm (15.98'')
L1953
Width : 430 mm (16.93'')
Depth : 232 mm (9.13'')
Height : 429 mm (16.89'')
8. WEIGHT (with TILT/SWIVEL)
L1753
Net. Weight : 3.54 kg (9.04 lbs)
Gross Weight : 4 kg (9.92 lbs)
L1953
Net. Weight : 4.6 kg (10.14 lbs)
Gross Weight : 5.1 kg (11.25 lbs)
SPECIFICATIONS
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 7
DISASSEMBLY ........................................................ 8
BLOCK DIAGRAM...................................................10
DISCRIPTION OF BLOCK DIAGRAM ................... 11
ADJUSTMENT ...................................................... 14 SERVICE OSD ........................................................15
TROUBLESHOOTING GUIDE .............................. 16
WIRING DIAGRAM ............................................... 22
EXPLODED VIEW...................................................23
REPLACEMENT PARTS LIST ...............................25
SCHEMATIC DIAGRAM ......................................... 29
MODE
POWER ON (NORMAL)
STAND-BY
SUSPEND
DPMS OFF
POWER S/W Off
H/V SYNC
ON/ON
OFF/ON
ON/OFF
OFF/OFF
-
POWER CONSUMPTION
less than 3
4
W -
L1753
less than 3
8
W - L1953
less than 1 W
less than 1 W
less than 1 W
less than 1 W
LED COLOR
BLUE
AMBER
AMBER
AMBER
OFF
VIDEO
ACTIVE
OFF
OFF
OFF
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