LG L1510SFK, L1510SF, LB500K-VL Schematic

COLOR MONIT OR
CHASSIS NO. : CL-32 F ACTORY MODEL: L1510SFK
MODEL: L1510SF (LB500K-VL)
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
L1510SF
MENU
A U
TO/
SE
LECT
CONTENTS
SPECIFICATIONS
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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
:
160(min.), 200(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 : 0~0.714 V
a) Color 0, 0 : 0 Vp-p b) Color 7, 0 : 0.467 Vp-p c) Color 15, 0 : 0.714 Vp-p
3) Input Impedance : 75
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
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 : 4.4kg (9.70 lbs) Gross Weight : 5.9kg (13.01 lbs)
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 4
OPERATING INSTRUCTIONS ................................ 5
WIRING DIAGRAM ................................................. 6
BLOCK DIAGRAM ................................................... 7
DESCRIPTION ........................................................ 8
ADJUSTMENT ...................................................... 10
TROUBLESHOOTING GUIDE .............................. 11
PRINTED CIRCUIT BOARD................................... 15
EXPLODED VIEW...................................................16
REPLACEMENT PARTS LIST ...............................18
PIN CONFIGURATION............................................21
SCHEMATIC DIAGRAM ........................................ 23
MODE
POWER ON (MAX)
POWER ON (NORMAL)
STAND-BY
SUSPEND
DPMS OFF
H/V SYNC
ON/ON
ON/ON OFF/ON ON/OFF
-
POWER CONSUMPTION
less than 30 W less than 28 W
less than 3 W less than 3 W
less than 3 W
LED COLOR
GREEN GREEN AMBER AMBER AMBER
VIDEO ACTIVE ACTIVE
OFF OFF
-
- 3 -
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.)
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.
PRECAUTION
CAUTION
Please use only a plastic screwdriver to protect yourself from shock hazard during service operation.
TIMING CHART
- 4 -
VIDEO
SYNC
B
D
C
F
E
A
H / V
H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines) H (Pixels) V (Lines)
Sync
Polarity
+
– –
+
– – – – – – – –
+ + + + + + + +
– – – – – –
+ +
Dot
Clock
25.175
28.322
25.175
30.24
31.5
31.5
36.0
40.0
50.0
49.5
57.2832
65
75
78.75
Frequency
31.468 KHz
70.0 Hz
31.468 KHz
70.0 Hz
31.469 KHz
60.0 Hz
35.00 KHz
66.67 Hz
37.861 KHz
72.8 Hz
37.50 KHz
75.0 Hz
35.156KHz
56.25 Hz
37.879 KHz
60.3 Hz
48.077 KHz
72.188 Hz
46.875 KHz
75.0 Hz
49.725 KHz
74.55 Hz
48.363 KHz
60.0 Hz
56.476 KHz
70.0 Hz
60.023 KHz
75.0 Hz
Resolution
640 x 350
720 x 400
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
832 x 624
1024 x 768
1024 x 768
1024 x 768
Total
Period
( E )
800 449 900 449 800 525 864 525 832 520 840 500
1024
625
1056
628
1040
666
1056
625
1152
667
1344
806
1328
806
1312
800
Video
Active
Time ( A )
640 350 720 400 640 480 640 480 640 480 640 480 800 600 800 600 800 600 800 600 832 624
1024
768
1024
768
1024
768
Blanking
Time
( B )
160
99
180
49
160
45
224
45
192
40
200
20
224
25
256
28
240
66
256
25
320
43
320
38
304
38
288
32
Sync
Duration
( D )
96
2
108
2
96
2
64
3
40
3
64
3
72
2
128
4
120
6
80
3
64
3
136
6
136
6
96
3
Back
Porch
( F )
48 60 55 34 48 33 96 39
128
28
120
16
128
22 88 23 64 23
160
21
224
39
160
29
144
29
176
28
Front
Porch
( C )
16 37 17 13 16 10 64
3
24
9
16
1
24
1
40
1 56 37 16
1 32
1 24
3 24
3 16
1
MODE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
(MAC)
(TEXT)
EEPROM
24LC16
ADC/PLL/Scaler
(GMZAN2)
MICOM
(MTV312)
Schmitt Trigger
(74HCT14A)
Panel
Interface
20 Pin
Connector
RGB
H.V
D­Sub 15P
E-DDC
Control
SCLK SDATA
CON
8P
3.3VD
3.3V_PL
Module Power 3.3V
3.3V_PL3.3VD
5VR
3.3V_AD
Regulator
BA033
Regulator
BA033
3.3V_A
+3.3V
Regulator
BA033
Hsync2 Vsync2
Hsyncm Vsyncm
2.5V_A 2.5V_D
Regulator
RC117
+2.5V_A
2.5V_D
5VR
LVDS
Filter
BD
SMPS
5VR
CON 8P
Inverter block
12VS
LIPS
CON 2P
EEPROM
24LC02
24 Bit
Inverter on/off
DIMADJ
Inverter on/off
DIMADJ
Inverter on/off
DIMADJ
Inverter on/off
DIMADJ
CON 2P
PWM
Controller
DESCRIPTION OF BLOCK DIAGRAM
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1. Scaler One chip IC(GMZAN-2, U201)
GMZAN-2 (U201) is one chip IC which it supports four internal function blocks of Video Amp, PLL, A/D converter and Video processor. Video signal (0.7Vp.p) clamped through C207, 208, 209 with matching ICs proper cut off voltage. This signal is processed as a proper 8 bit digital signal by U201s amplifying, phase locking, A/D converting,
and scaling operations. U201 outputs 24bit RGB data and control signals(Clock, Horizontal and Vertical sync, and Data Enable) as LVDS ICs input signals.
2. System Controller (Microprocessor) Circuit
1) Microprocessor (U501) distinguishes polarity and frequency by calculating horizontal and vertical sync input
from signal source.
2) Microprocessor (U501) carries out power control by sending power-down trigger signal to each IC.
3) Microprocessor (U501) communicates with EEPROM (U502), and GMZAN-2 (U201)
through IIC(2 lines) or 4 bit bus line. It makes all devices operated properly.
4) Microprocessor (U501) let User adjust screen by OSD function.
3. LVDS(Low Voltage Differential Signal, U411)
LVDS transmitter (U411) delivers digital signal to the receiver inside LCD module by method of abstraction. The abstracted signals are pairs of RIN0+-, RIN1+-, RIN2+-, RIN3+-, and RCLKIN+- of which voltage swing is 0.5V each. When SHUTON pins input is High, transmitter goes to power down mode.
4. DC/DC block
This block is composed of regulators which supplies 2.5V and 3.3V. Each regulators source power is 5VR from LIPS(LCD Inverter and Power Supply) block. U806 supplies 2.5VD and 2.5VA and U802 supplies 3.3VD, 3.3V_AD, and 3.3V_PL powers to GMZAN-2’s internal PLL, ADC, Pre-amp, and scaler by dropping down 5VR. U805 supplies MODPWR-3.3V for LCD modules operation by dropping down 5VR.
5. LIPS Block (LCD Inverter and Power Supply)
This block supplies DC voltages of 5VS to interface board and 12V to inverter by converting AC input voltage of 100~240Vac. Converting method is SMPS(Switching Mode Power Supply). Inverter on/off signal from microprocessor makes inverter turned on or off . DIMADJ signal from microprocessor does inverters current adjustment for Brightness control.
USB Touchscreen Constroller Block Diagram
- 9 -
4-Wire
Touch Panel
EEPROM
Burr-Brown
ADS7846
Masked OTP
or
Processor
Main System
Processor
PDIUS
BD12
Chip
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