Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
COLOR MONITOR
SERVICE MANUAL
CHASSIS NO. : CL-61
MODEL: L1515S (L1515SM-AL**R, AG**R)
L1515S(S) (L1515SM-AG**S)
L1515S(K) (L1515SM-AG**B)
( ) **Same model for Service
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
*Same looking with new chassis
CONTENTS
SPECIFICATIONS ................................................... |
2 |
PRECAUTIONS ....................................................... |
3 |
TIMING CHART ....................................................... |
4 |
OPERATING INSTRUCTIONS ................................ |
5 |
WIRING DIAGRAM ................................................. |
6 |
BLOCK DIAGRAM ................................................... |
7 |
DESCRIPTION OF BLOCK DIAGRAM |
................... 8 |
ADJUSTMENT ...................................................... |
10 |
TROUBLESHOOTING GUIDE .............................. |
12 |
EXPLODED VIEW................................................... |
17 |
REPLACEMENT PARTS LIST ............................... |
18 |
SCHEMATIC DIAGRAM......................................... |
20 |
SPECIFICATIONS
1. LCD CHARACTERISTICS |
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Type |
: TFT XGA LCD Module |
Size |
: 352.0(H) x 263.5(V) x 14.0(T) |
Pixel Pitch |
: 0.297mm x 0.297mm |
Color Depth |
: 6bits(with FRC)/ 16M colors |
Active Video Area |
: 15.0inch |
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(304.128 x 228.096) |
Surface Treatment |
: Anti-Glare, Hard Coating (3H) |
Backlight Unit |
: Top/Bottom edge side 2CCFL |
Electrical Interface |
: LVDS interface |
2. OPTICAL CHARACTERISTICS |
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2-1. Viewing Angle by Contrast Ratio ≥ 10 |
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(LPL Module) |
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Left |
: 55° min. 65° typ. |
Right: 55° min. 65° typ. |
Top |
: 45° min. 45° typ. |
Bottom: 50° min. 55° typ. |
(CMO Module) |
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Left |
: 50° min. 60° typ. |
Right: 50° min. 60° typ. |
Top |
: 30° min. 40° typ. |
Bottom: 50° min. 60° typ. |
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 |
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 |
GREEN |
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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 |
1 W |
AMBER |
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POWER S/W OFF |
- |
- |
less than |
1 W |
OFF |
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5. ENVIRONMENT
5-1. |
Operating Temperature: 10°C~35°C (50°F~95°F) |
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5-2. |
Operating Humidity |
: 10%~80% |
5-3. MTBF |
: 50,000 Hours (Min.) |
Lamp Life |
: 40,000 Hours (Min.) |
6. DIMENSIONS (with TILT/SWIVEL)
(FULL Up Position)
Width |
: 350mm (13.78'') |
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Depth |
: 133mm (5.24'') |
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Height |
: 318mm (12.52'') |
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(Folded Position) |
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Width |
: 350mm (13.78'') |
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Depth |
: 64mm (2.52'') |
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Height |
: 334mm (13.15'') |
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7. WEIGHT (with TILT/SWIVEL) |
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Net. Weight |
: 2.5kg (5.51 lbs) |
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Gross Weight |
: 5.5kg (12.13 lbs) |
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- 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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(TEXT) |
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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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(MAC) |
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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 |
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Power Connect |
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D-Sub Signal |
See Front Control Panel |
Connect |
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Front Control Panel
2 |
3 |
1.Power ON/OFF Button
Use this button to turn the monitor on or off.
Power Indicator
This indicator lights up green when the monitor operates normally. If the display is in DPM(Energy Saving)mode, this indicator color change to amber.
2.MENU Button
Use this button to enter or exit the On Screen Display.
3. Button
Use these buttons to choose or adjust items in the On Screen Display.
100
100 |
Bring up Contrast and Brightness adjustment. |
4 1
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.)
4.SELECT/ AUTOButton
Use this button to enter a selection in the On Screen Display.
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.
- 5 -
CONTROLS LOCKED/UNLOCKED
: MENU and
This function allows you to secure the current control settings, so that they cannot be inadvertently changed. Press and hold the MENU button and button for 3 seconds: the message “CONTROLS LOCKED” appears.
You can unlock the OSD controls at any time by pushing the MENU button and button for 3 seconds: the message “CONTROLS UNLOCKED” will appear.
WIRING DIAGRAM
Connector Ass’y P/N:
6631T11012R-LPL Module
6631T11021V-CMO Module
CN1 |
J8 |
J704 J706
J707
CN2
Connector Ass’y P/N:
J1
- 6 -
- 7 -
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5V |
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LCD Module |
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5V |
3.3V |
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LVDS |
R,G,B differential
(Low Voltage
Differential Signaling)
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3.3V |
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Diode |
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Reg. |
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KDS184 |
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3.3V |
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2.5V |
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2.5V |
MST9111B |
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3.3V |
including |
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(ADC/LVDS/SCALER ) |
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12V |
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5V |
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AC Input |
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LIPS |
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R,G,B, H/V Sync |
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D-SUB
MTV312
Micom
DIAGRAM BLOCK
DESCRIPTION OF BLOCK DIAGRAM
1. Video Controller Part.
This part amplifies the level of video signal for the digital conversion and converts from the analog video signal to the digital video signal using a pixel clock.
The pixel clock for each mode is generated by the PLL. The range of the pixel clock is from 25MHz to 135MHz. This part consists of the Scaler, ADC, LVDS transmitter.
The Scaler gets the video signal converted analog to digital, interpolates input to 1280 X 1024 resolution signal and outputs 8-bit R, G, B signal to transmitter.
2. Power Part.
This part consists of the one 3.3V regulator, and two 2.5V drop diodes to convert power which is provided 12V, 5V in Power board.
5V is provided for LCD panel and Micom.
Also, 5V is converted 3.3V by regulator and 3.3V is converted 2.5V by drop diode. Converted power is provided for IC in the main board.
3. MICOM Part.
This part consists of EEPROM IC which stores control data, Reset IC and the Micom.
The Micom distinguishes polarity and frequency of the H/V sync are supplied from signal cable. The controlled data of each modes is stored in EEPROM.
- 8 -