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Servicer i |
Guidei |
Specificationifi ti |
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PARK |
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KIM J. O |
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1. Model Description |
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H. J |
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04.02.06 |
04.02.06 |
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MODEL |
L1520BM |
BRAND |
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LG |
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Part No. |
3828TSL097G |
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SUFFIX |
ALEUR |
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Product Name |
FLATRON L1520B |
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2. |
Printing Specification |
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1. |
Trim Size (Format) : 215mm x 280 mm |
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2. |
Printing Colors |
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• Cover : LG COLOR |
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• Inside : Black |
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3. |
Stock (Paper) |
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• Cover : Snow white paper 150 g/ |
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• Inside : Snow white paper 100 g/ |
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4. |
Printing Method : |
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5. |
Bindery : Saddle stitch |
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6. |
Language : English |
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7. |
Number of pages : 24(Including blank 1page) |
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3. |
Special Instructions |
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4. |
Changes |
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1 |
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REVNO.. MM/DD/YY |
CHANGE NO. |
CHANGE |
CONTENTS |
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Paginationi ti sheett
P/NO.3828TSL097G
Total pages : 24pages
Front |
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Front cover |
English |
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English |
English |
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English |
English |
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English |
English |
Cover |
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Inside |
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(Blank) |
2 |
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4 |
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……. |
….. |
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20 |
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English |
Rear Cover |
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Rear |
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Inside |
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Cover |
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21 |
22 |
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Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CL-61
MODEL: 
L1520B (L1520BM-AL**R)
( ) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
*Same looking with new chassis.
Issue Date; 2004. 2
- 1 -
CONTENTS
SPECIFICATIONS ................................................... |
2 |
PRECAUTIONS ....................................................... |
3 |
TIMING CHART ....................................................... |
4 |
OPERATING INSTRUCTIONS ................................ |
5 |
WIRING DIAGRAM ................................................. |
6 |
BLOCK DIAGRAM ................................................... |
7 |
DESCRIPTION OF BLOCK DIAGRAM |
................... 8 |
ADJUSTMENT ........................................................ |
9 |
TROUBLESHOOTING GUIDE .............................. |
11 |
EXPLODED VIEW................................................... |
15 |
REPLACEMENT PARTS LIST ............................... |
17 |
SCHEMATIC DIAGRAM......................................... |
19 |
SPECIFICATIONS
1. LCD CHARACTERISTICS |
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Type |
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: TFT XGA LCD Module |
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Size |
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: 352.0(H) x 263.5(V) x 14.0(T) |
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Pixel Pitch |
: 0.297mm x 0.297mm |
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Color Depth |
: 6bits(with FRC)/ 16M colors |
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Active Video Area |
: 15.0inch |
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(304.128 x 228.096) |
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Surface Treatment |
: Anti-Glare, Hard Coating (3H) |
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Backlight Unit |
: 2CCFL |
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Operating Mode |
: Transmissive mode, Normally white |
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Electrical Interface |
: LVDS interface |
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2. OPTICAL CHARACTERISTICS |
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2-1. Viewing Angle by Contrast Ratio ≥ |
10 |
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Left |
: 55° min. 65° typ. |
Right: |
55° min. 65° typ. |
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Top |
: 40° min. 45° typ. |
Bottom: |
50° min. 55° typ. |
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2-2. Luminance
: 200(min.), 250(typ.) at Center point
2-3. Contrast Ratio : 300(min.), 400(typ.)
3.SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
1) |
Type |
: Separate Sync. (Horizontal & Vertical) |
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2) |
Input Voltage Level : Low=0~0.8V, High=2.1~5.5V |
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3) |
Sync Polarity |
: Positive or Negative |
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3-2. Video Input Signal |
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1) |
Type |
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: R, G, B Analog |
2) |
Voltage Level |
: 0~0.7 V |
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a) Color 0, 0 |
: 0 Vp-p |
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b) Color 7, 0 |
: 0.35 Vp-p |
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c) Color 15, 0 |
: 0.7 Vp-p |
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3) |
Input Impedance |
: 75 Ω |
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3-3. Operating Frequency |
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Horizontal |
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: 30 ~ 63kHz |
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Vertical |
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: 56 ~ 75Hz |
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4. POWER SUPPLY
4-1. Power
100-240V~, 50/60Hz 0.6A
4-2. Power Consumption
MODE |
H/V SYNC |
VIDEO |
POWER CONSUMPTION |
LED COLOR |
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POWER ON (NORMAL) |
ON/ON |
ACTIVE |
less than 25 W |
BLUE |
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STAND-BY |
OFF/ON |
OFF |
less than 1 W |
AMBER |
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SUSPEND |
ON/OFF |
OFF |
less than 1 W |
AMBER |
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DPM OFF |
OFF |
OFF |
less than |
1W |
AMBER |
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POWER S/W OFF |
- |
- |
less than |
1W |
OFF |
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5.ENVIRONMENT
5-1. Operating Temperature: 10°C~35°C (50°F~95°F)
5-2. |
Operating Humidity : 10%~80% |
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5-3. |
MTBF |
: 50,000 Hours (Min.) |
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Lamp Life |
: 40,000 Hours (Min.) |
6.DIMENSIONS (with TILT/SWIVEL) FullUp Position
Width |
: 363.8mm (14.32'') |
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Depth |
: 220mm (8.66'') |
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Height |
: 330.7mm (13.02'') |
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Folded Position |
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Width |
: 363.8mm (14.32'') |
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Depth |
: 113.7mm (8.66'') |
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Height |
: 358mm (14.09'') |
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7. WEIGHT (with TILT/SWIVEL)
Net. Weight |
: 3.2kg |
(7.05 lbs) |
Gross Weight |
: 5.5kg |
(12.13 lbs) |
- 2 -
PRECAUTION
WARNING FOR THE SAFETY-RELATED COMPONENT.
•There are some special components used in LCD
monitor that are important for safety. These parts are marked 
on the schematic diagram and the replacement parts list. It is essential that these critical parts should be replaced with the manufacturer’s specified parts to prevent electric shock, fire or other hazard.
•Do not modify original design without obtaining written permission from manufacturer or you will void the original parts and labor guarantee.
TAKE CARE DURING HANDLING THE LCD MODULE WITH BACKLIGHT UNIT.
•Must mount the module using mounting holes arranged in four corners.
•Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen.
•Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel.
•Protect the module from the ESD as it may damage the electronic circuit (C-MOS).
•Make certain that treatment person’s body are grounded through wrist band.
•Do not leave the module in high temperature and in areas of high humidity for a long time.
•The module not be exposed to the direct sunlight.
•Avoid contact with water as it may a short circuit within the module.
•If the surface of panel become dirty, please wipe it off with a softmaterial. (Cleaning with a dirty or rough cloth may damage the panel.)
CAUTION
Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.
WARNING
BE CAREFUL ELECTRIC SHOCK !
•If you want to replace with the new backlight (CCFL) or inverter circuit, must disconnect the AC adapter because high voltage appears at inverter circuit about 650Vrms.
•Handle with care wires or connectors of the inverter circuit. If the wires are pressed cause short and may burn or take fire.
- 3 -
TIMING CHART
VIDEO
B |
A |
C |
E |
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F
D
SYNC
MODE |
H / V |
Sync |
Dot |
Frequency |
Total |
Video |
Blanking |
Sync |
Back |
Front |
Resolution |
Polarity |
Clock |
Period |
Active |
Time |
Duration |
Porch |
Porch |
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( E ) |
Time ( A ) |
( B ) |
( D ) |
( F ) |
( C ) |
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1 |
H (Pixels) |
+ |
25.175 |
31.468 KHz |
800 |
640 |
160 |
96 |
48 |
16 |
640 x 350 |
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V (Lines) |
– |
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70.0 Hz |
449 |
350 |
99 |
2 |
60 |
37 |
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2 |
H (Pixels) |
– |
28.322 |
31.468 KHz |
900 |
720 |
180 |
108 |
55 |
17 |
720 x 400 |
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V (Lines) |
+ |
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70.0 Hz |
449 |
400 |
49 |
2 |
34 |
13 |
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3 |
H (Pixels) |
– |
25.175 |
31.469 KHz |
800 |
640 |
160 |
96 |
48 |
16 |
640 x 480 |
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V (Lines) |
– |
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60.0 Hz |
525 |
480 |
45 |
2 |
33 |
10 |
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4 |
H (Pixels) |
– |
30.24 |
35.00 KHz |
864 |
640 |
224 |
64 |
96 |
64 |
640 x 480 |
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V (Lines) |
– |
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66.67 Hz |
525 |
480 |
45 |
3 |
39 |
3 |
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5 |
H (Pixels) |
– |
31.5 |
37.861 KHz |
832 |
640 |
192 |
40 |
128 |
24 |
640 x 480 |
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V (Lines) |
– |
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72.8 Hz |
520 |
480 |
40 |
3 |
28 |
9 |
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6 |
H (Pixels) |
– |
31.5 |
37.50 KHz |
840 |
640 |
200 |
64 |
120 |
16 |
640 x 480 |
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V (Lines) |
– |
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75.0 Hz |
500 |
480 |
20 |
3 |
16 |
1 |
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7 |
H (Pixels) |
+ |
36.0 |
35.156KHz |
1024 |
800 |
224 |
72 |
128 |
24 |
800 x 600 |
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V (Lines) |
+ |
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56.25 Hz |
625 |
600 |
25 |
2 |
22 |
1 |
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8 |
H (Pixels) |
+ |
40.0 |
37.879 KHz |
1056 |
800 |
256 |
128 |
88 |
40 |
800 x 600 |
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V (Lines) |
+ |
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60.3 Hz |
628 |
600 |
28 |
4 |
23 |
1 |
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9 |
H (Pixels) |
+ |
50.0 |
48.077 KHz |
1040 |
800 |
240 |
120 |
64 |
56 |
800 x 600 |
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V (Lines) |
+ |
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72.188 Hz |
666 |
600 |
66 |
6 |
23 |
37 |
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10 |
H (Pixels) |
+ |
49.5 |
46.875 KHz |
1056 |
800 |
256 |
80 |
160 |
16 |
800 x 600 |
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V (Lines) |
+ |
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75.0 Hz |
625 |
600 |
25 |
3 |
21 |
1 |
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11 |
H (Pixels) |
– |
57.2832 |
49.725 KHz |
1152 |
832 |
320 |
64 |
224 |
32 |
832 x 624 |
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V (Lines) |
– |
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74.55 Hz |
667 |
624 |
43 |
3 |
39 |
1 |
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12 |
H (Pixels) |
– |
65 |
48.363 KHz |
1344 |
1024 |
320 |
136 |
160 |
24 |
1024 x 768 |
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V (Lines) |
– |
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60.0 Hz |
806 |
768 |
38 |
6 |
29 |
3 |
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13 |
H (Pixels) |
– |
75 |
56.476 KHz |
1328 |
1024 |
304 |
136 |
144 |
24 |
1024 x 768 |
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V (Lines) |
– |
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70.0 Hz |
806 |
768 |
38 |
6 |
29 |
3 |
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14 |
H (Pixels) |
+ |
78.75 |
60.023 KHz |
1312 |
1024 |
288 |
96 |
176 |
16 |
1024 x 768 |
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V (Lines) |
+ |
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75.0 Hz |
800 |
768 |
32 |
3 |
28 |
1 |
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- 4 -
OPERATING INSTRUCTIONS
FRONT VIEW |
REAR VIEW |
D-sub Connect
Power Connect
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1 |
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1. |
Power Button |
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3. |
Menu Button |
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Use this button to turn the display on or off. |
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Use this button to enter or exit the On Screen |
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<Power (DPMS) Indicator> |
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Display. |
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This Indicator lights up blue when the display |
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operates normally. If the display is in DPM (Energy |
4. |
AUTO/SELECT Button |
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Saving) mode, this indicator color changes to |
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Use this button to enter a selection in the On |
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amber. |
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Screen Display. |
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2. |
Button |
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Use these buttons to choose or adjust items in the On Screen Display.
This feature lets you easily select the best desired image condition optimized to the environment (ambient illumination, image types etc.).
• DAY : Bright ambient illumination
• NIGHT : Dark ambient illumination
• TEXT : For text images (Word processing etc.)
• MOVIE : For animation images in videos or movies
• PHOTO : For pictures or drawings
• USER MODE : For use under user setup image conditions (Brightness, contrast and color tint are selected by the user in OSD Screen Setup Menu.)
When adjusting your display settings, always press the AUTO/SELECT button before entering the On Screen Display(OSD). This will automatically adjust your display image to the ideal settings for the current screen resolution size (display mode).
The best display mode is 1024x768/60Hz.
100
100
Bring up Contrast and Brightness adjustment. : 
- 5 -
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