Table Of Contents; Block Diagram; Schematic Diagram; Specifications - LG FLATRON L4200A Service Manual

SPECIFICATIONS ..................................................... 2
PRECAUTIONS ......................................................... 4
TIMING CHART ......................................................... 5
OPERATING INSTRUCTIONS .................................. 7
REMOTE CONTROLLER BUTTONS..........................9
WIRING DIAGRAM .................................................. 12
BLOCK DIAGRAM ................................................... 13
1. LCD CHARACTERISTICS
Type : TFT Color LCD Module
Size : 42inch
Pixel Pitch : 0.681 x 0.227 x RGB
Color Depth : 8-bit, 16,777,216 colors
Electrical Interface : LVDS
Size : 1006mm x 610mm x 59mm
Surface Treatment : Anti-Glare, Hard Coating(3H)
Operating Mode : Normally Black
Backlight Unit : 20-CCFL (20 Lamps)
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio ≥ 10
Left : -85° min., -88°(Typ)
Right : +85° min., +88°(Typ)
Top : +85° min., +88°(Typ)
Bottom : -85° min., -88°(Typ)
2-2. Luminance : 380(min), 450(Typ)
2-3. Contrast Ratio : 280(min), 350(Typ)
3. SIGNAL (Refer to the Timing Chart)
3-1. PC & Video Input
1)Signal Input : S-video,RCA, Component
2)Input Form : D-SUB Analog, DVI-D,V1(CVBS), V2(S-VIDEO)
Option : Y/PB/Pr x2 or SCARTx2(Full & Half)
3)Resolution(max) : Analog -1600 x 1200@60Hz
Digital -1360 x 768@60Hz
3-2. Audio AMP
1) Output : 10W + 10W (Reted Out put
2) Freq. Character : 100Hz ~ 10KHz Range (-3dB)
3) T.H.D : Whthin 10%
4) Input Sensitivity : 0.700Vrms
5) S/N : More than 40dB
3-3. Speaker
1) Type : Built-In
2) Impedance : 8
3) Input : Max - 11W, Normal - 10W
3-4. AV
1) Video Level : Input - 0.7 0.15 (75
2) Sync Level : Input - 0.286 0.075 (75
3) Color Level : Input - 0.214 0.072 (75
4) Audio Level : NTSC Input - 0.40 0.1 (600 )
PAL Input - 0.50 0.1 (600 )
PC Input - 0.70 0.1 (600 )
5) Video Cross Talk : 43
3-5. Sync Input
Horizontal : 30 ~ 83kHz(Digital: 30~72kHz)
Vertical : 56 ~ 85Hz
Input Form : Separate, TTL, Positive/Negative Digital
CONTENTS
DESCRIPTION OF BLOCK DIAGRAM.....................17
ADJUSTMENT ......................................................... 18
ADJUST WHITE BALANCE ......................................20
TROUBLESHOOTING GUIDE ................................ 21
EXPLODED VIEW .....................................................27
REPLACEMENT PARTS LIST .................................29
SCHEMATIC DIAGRAM........................................... 40

SPECIFICATIONS

4. POWER SUPPLY
4-1. Power Voltage
4-2. Power Consumption
POWER ON (NORMAL)
CUT-OFF SWITCHOFF
5. ENVIRONMENT
5-1. Operating Temperature
5-2. Operating Humidity
5-3. MTBF
6. DIMENSIONS (with TILT/SWIVEL)
L4200AL / L4200ATL
Width
Height
Depth
L4200APL
Width
Height
10%) Depth
L4200AFL
Width
Height
Depth
7. WEIGHT (with TILT/SWIVEL)
L4200AL / L4200ATL
Net. Weight
Gross Weight
L4200APL
Terminal Resistor) Net. Weight
Terminal Resistor) Gross Weight
Terminal Resistor)
L4200AFL
Net. Weight
Gross Weight
- 2 -
: AC 100~240V, 50/60Hz
MODE H/V SYNC VIDEO
ON/ON ACTIVE
OFF/ON OFF
STAND-BY
ON/OFF
OFF
SUSPEND
OFF
OFF/OFF
POWER OFF
-
-
: 1057 mm (41.61'')
: 702 mm (27.63'')
: 294.5 mm (11.59'')
: 1057 mm (41.61'')
: 653 mm (25.70'')
: 119.1 mm (4.69'')
: 1259 mm (49.57'')
: 702 mm (27.63'')
: 294.5 mm (11.59'')
: 41.4kg (91.28 lbs)
: 44.4kg (97.90 lbs)
: 37.0kg (81.58 lbs)
: 40.0kg (88.20 lbs)
: 44.0kg (97.01 lbs)
: 47.0kg (103.6 lbs)
POWER CONSUMPTION LED COLOR
less than 300 W GREEN
less than 5 W AMBER
less than 5 W
AMBER
AMBER
less than 5 W
OFF
less than 0 W
: 10°C~35°C (50°F~95°F)
: 10%~80%
: 50,000 Hours(Min.)