LG L1510SL, 1510S Service Manual

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E-mail:http://www.LGEservice.com/techsup.html

COLOR MONITOR

SERVICE MANUAL

CHASSIS NO. : CL-32

MODEL: L1510S (L1510SL-AL**R)

*( ) **Same model for Service

CAUTION

BEFORE SERVICING THE UNIT,

READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

*To apply the Mstar Chip.

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 ..............................	10
PRINTED CIRCUIT BOARD...................................	14
EXPLODED VIEW...................................................	17
REPLACEMENT PARTS LIST ...............................	19
PIN CONFIGURATION............................................	21
SCHEMATIC DIAGRAM.........................................	23

SPECIFICATIONS

1. LCD CHARACTERISTICS
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
	(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
2-1. Viewing Angle by Contrast Ratio ≥ 10
Left	: 55° min.	Right	: 55° min.
Top	: 40° min.	Bottom	: 40° min.

2-2. Luminance

: 200(min.), 250(typ.) at Center point

2-3. Contrast Ratio :250(min.), 350(typ.)

3.SIGNAL (Refer to the Timing Chart)

3-1. Sync Signal

1)	Type	: Separate Sync. (Horizontal & Vertical)
2)	Input Voltage Level : Low=0~0.8V, High=2.1~5.5V
3)	Sync Polarity		: Positive or Negative
3-2. Video Input Signal
1)	Type		: R, G, B Analog
2)	Voltage Level		: 0~0.7 V
a) Color 0, 0			: 0 Vp-p
b) Color 7, 0			: 0.35 Vp-p
c) Color 15, 0			: 0.7 Vp-p
3)	Input Impedance		: 75 Ω
3-3. Operating Frequency
Horizontal			: 30 ~ 63kHz
Vertical			: 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
POWER ON (NORMAL)	ON/ON	ACTIVE	less than 25	W	GREEN
STAND-BY	OFF/ON	OFF	less than 3 W		AMBER
SUSPEND	ON/OFF	OFF	less than 3 W		AMBER
DPM OFF	-	-	less than 3	W	AMBER

5.ENVIRONMENT

5-1. Operating Temperature: 10°C~35°C (50°F~95°F)

		(Ambient)
5-2. Relative Humidity		: 10%~80%
		(Non-condensing)
5-3. MTBF	: 50,000 Hours (Min.)
Lamp Life	: 40,000 Hours (Min.)
6. DIMENSIONS (with TILT/SWIVEL)
Width		: 356mm (14.01'')
Depth		: 151.7mm (5.97'')
Height		: 359.8mm (14.16'')
7. WEIGHT (with TILT/SWIVEL)
Net. Weight		: 4.0kg (8.82 lbs)
Gross Weight		: 5.5kg (12.13 lbs)

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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.

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TIMING CHART

VIDEO

B	A
C	E

F

D

SYNC

MODE	H / V	Sync	Dot	Frequency	Total	Video	Blanking	Sync	Back	Front	Resolution
		Polarity	Clock		Period	Active	Time	Duration	Porch	Porch
					( E )	Time ( A )	( B )	( D )	( F )	( C )
1	H (Pixels)	+	25.175	31.468 KHz	800	640	160	96	48	16	640 x 350
	V (Lines)	–		70.0 Hz	449	350	99	2	60	37
2	H (Pixels)	–	28.322	31.468 KHz	900	720	180	108	55	17	720 x 400
	V (Lines)	+		70.0 Hz	449	400	49	2	34	13
											(TEXT)
3	H (Pixels)	–	25.175	31.469 KHz	800	640	160	96	48	16	640 x 480
	V (Lines)	–		60.0 Hz	525	480	45	2	33	10
4	H (Pixels)	–	30.24	35.00 KHz	864	640	224	64	96	64	640 x 480
	V (Lines)	–		66.67 Hz	525	480	45	3	39	3
5	H (Pixels)	–	31.5	37.861 KHz	832	640	192	40	128	24	640 x 480
	V (Lines)	–		72.8 Hz	520	480	40	3	28	9
6	H (Pixels)	–	31.5	37.50 KHz	840	640	200	64	120	16	640 x 480
	V (Lines)	–		75.0 Hz	500	480	20	3	16	1
7	H (Pixels)	+	36.0	35.156KHz	1024	800	224	72	128	24	800 x 600
	V (Lines)	+		56.25 Hz	625	600	25	2	22	1
8	H (Pixels)	+	40.0	37.879 KHz	1056	800	256	128	88	40	800 x 600
	V (Lines)	+		60.3 Hz	628	600	28	4	23	1
9	H (Pixels)	+	50.0	48.077 KHz	1040	800	240	120	64	56	800 x 600
	V (Lines)	+		72.188 Hz	666	600	66	6	23	37
10	H (Pixels)	+	49.5	46.875 KHz	1056	800	256	80	160	16	800 x 600
	V (Lines)	+		75.0 Hz	625	600	25	3	21	1
11	H (Pixels)	–	57.2832	49.725 KHz	1152	832	320	64	224	32	832 x 624
	V (Lines)	–		74.55 Hz	667	624	43	3	39	1
											(MAC)
12	H (Pixels)	–	65	48.363 KHz	1344	1024	320	136	160	24	1024 x 768
	V (Lines)	–		60.0 Hz	806	768	38	6	29	3
13	H (Pixels)	–	75	56.476 KHz	1328	1024	304	136	144	24	1024 x 768
	V (Lines)	–		70.0 Hz	806	768	38	6	29	3
14	H (Pixels)	+	78.75	60.023 KHz	1312	1024	288	96	176	16	1024 x 768
	V (Lines)	+		75.0 Hz	800	768	32	3	28	1

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OPERATING INSTRUCTIONS

FRONT VIEW	REAR VIEW
	Power Connector
See front control panel	D-Sub Signal Connector

Front Control Panel

3

2

1.Power Button

Use this button to turn the display on or off.

<Power (DPMS) Indicator>

This Indicator lights up green when the display operates normally. If the display is in DPM (Energy Saving) mode, this indicator color changes to amber.

2. Button

Use these buttons to choose or adjust items in the

On Screen Display.

This function optimizes the brightness, contrast or color value to the surrounding conditions and settings and enables you to enjoy the most suitable picture by adjusting the surroundings (DAY/NIGHT/USER MODE).

• TEXT: For viewing letters

• MOVIE: For viewing movies

• PHOTO: For viewing pictures or the photographs

• USER MODE: This function memorizes the

	manual adjustment -Brightness, Contrast and
	Color value on the On Screen Display.
100
100	Bring up Contrast and Brightness adjustment.
	:

41

3.Menu Button

Use this button to enter or exit the On Screen Display.

4.AUTO/SELECT Button

Use this button to enter 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.

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WIRING DIAGRAM

		Connector Ass’y :
		P/N: 6631T11016C
			Connector Ass’y :
			P/N: 6631T20022G
	J706	J704
CN2		J705
	CN3		J1
		- 6 -

5V 5V

3.3V			2.5V
Reg.			Reg.
3.3V			2.5V

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	12V		5V
AC Input		LIPS

5V			LCD Module

	R,G,B	LVDS
		(Low Voltage
	differential
		Differential Signaling)

2.5V
		MST9011			MTV312
					Micom
		including
3.3V
		(ADC/LVDS/SCALER )

R,G,B, H/V Sync

D-SUB

DIAGRAM BLOCK

DESCRIPTION OF BLOCK DIAGRAM

1.Video Controller Part & Display Data Transmitter Part.(MST9011)

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 80MHz. This part consists of the Scaler.

The Scaler gets the video signal converted analog to digital, interpolates input to 1024 x 768 resolution signal and outputs 8-bit R, G, B signal to transmitter.

Especially pre-amp / ADC / Video controller/ Transmitter are merged to one chip “MST9011” by MSTAR. This part transmit digital signal from the Scaler to the receiver of module.

2.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.

3.Power Part

This part consists of the one 3.3V and one 2.5 regulators to convert power which is provided 5V in LIPS Board. 5V is provided for LCD Panel and Micom part.

Also, 5V is converted 3.3V and 2.5V by regulator. Converted power is provided for IC in the main board.

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ADJUSTMENT

	All adjustment are thoroughly checked and corrected	2. Adjustment for White Balance
	when the monitor leaves the factory, but sometimes	1)	Display color 0,0 pattern at Mode 12.
	several minor adjustment may be required.	2)	Set External Bright to MAX position and Contrast to
	Adjustment should be following procedure and after		MAX Position.
	warming up for a minimum of 10 minutes.	3)	Select PRESET START → BIAS CAL command
	Alignment appliances and tools.		and Enter.
	- IBM Compatible PC	4)	No attempt to manually adjust, BIAS data is auto-
			matically adjusted and saved to the EEPROM.
	- Programmable Signal Generator.
		5)	Display color 15,0 pattern at Mode 13.
	(eg. VG-819 made by Astrodesign Co.)
		6)	Select DRIVE CAL command and Enter.
	- E(E)PROM with each mode data saved.
		7)	Color 1 (9300K) and Color 2 (6500K) are
	- Alignment Adapter and Software.
			automatically adjusted and saved to the EEPROM.
	1. Adjustment for Factory Preset Mode	8) Select PRESET EXIT command and Enter.

1)Run alignment program for L1510SL on the IBM compatible PC.

2)Select EEPROM All Init. command and Enter.

3)Display cross hatch pattern at Mode 1.

4)Select EDID WRITE command and Enter.

										A
Video Signal									IBM
									Compatible PC
Generator
										C
				used					PARALLEL PORT
			Not		RS232C
									OFF	ON
			PARALLEL						5V
Line	C								F
Control
									Power inlet (required)
									220
				VGS				POWER	Power Select Switch	ON
									(110V/220V)
										E
		A			MONITOR			ST	Power LED
							- SYNC			OFF
						V
					B				E ST Switch
										B
								F	V-Sync On/Off Switch
									(Switch must be ON.)

Figure 1. Cable Connection

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