LG LC370WXN-SAB1-621 User manual

LC370WXN-SAB1-621
[ RoHS Verified ]
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R
Warning?
Warning statements identify conditions or
practices that could result in injury or loss of life
if the warning is ignored and the product is
handled incorrectly.
Caution?
Caution statements identify conditions or
practices that could result in damage to this
product or other property if the caution is
ignored and the product is handled
incorrectly.
௖N WARNING
(1) Do not supply a voltage higher than that specified to this
product. This may damage the product and may cause a
fire.
(2) Do not use this product in locations where the humidity is
extremely high, where it may be splashed with water, or
where flammable materials surround it.
(3) Do not install or use the product in a location that dose not
satisfy the specified environmental conditions. This may
damage the product and may cause a fire.
(4) If a foreign substance (such as water, metal, or liquid)gets
inside the product, immediately turn off the power.
Continuing to use the product and cause fire or electric
shock.
(5) If the product emits smoke or abnormal noise, immediately
turn off the power. Continuing to use the product cause fire
or electric shock.
(6) Do not disconnect or connect the connector while the
power is on.
(7) Do not pull out or insert the power cable from/to an outlet
with wet hands. It may cause electric shock.
(8) If the power cable is damaged or the connector is loose, do
not use the product : otherwise this can lead to fire or
electric shock.
(9) Backlight Inverter uses a high voltage for Lamp. Do not
touch circuit substrate and caution on electric shock when
handling the LCD Module Backlight Inverter unit.
SAFETY PRECAUTIONS
Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
LCD Module is a display device to be divided into Board Assembly and Backlight Assembly. Board Assembly consists of
electric circuitry, PCB and two sheets of glass. Polarizer films are attached on each surface. The space between two sheets
of glass are filled with Liquid Crystal. And the Backlight Assembly includes Lamp Assembly, optical sheets(Diffuser, Prism),
optical plate, supporter main.
When using / handing this LCD Module, pay attention to the below warning and cautions.
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S
ௗN CAUTION
(1) Do not place this product in a location that is subject to
heavy vibration, or an unstable surface such as an inclined
surface. The product may fall off or fall over, causing
injuries.
(2) Before disconnecting cable from the product, be sure to
turn off the power. Be sure to hold the connector when
disconnecting cables. Pulling a cable with excessive force
may cause the core of the cable to be exposed or break
the cable, and this can lead to fire or electric shock.
(3) This product contains glass. If shock, vibration, heat or
distortion is applied to the product, the glass may be broken.
(4) If glass surface of the display breaks or is scratched, do
not touched the broken pieces or the scratched with bare
hands. You may be injured.
(5) LCD Module requires to be handled with special care. LCD
Module is not to be touched with metal or hard materials.
Must not be stressed by heat or mechanical impact.
(6) There are some particular components on the rear panel of
this product. Skin contact with these components may
cause an electric shock. So, handle with care.
(7) While moving the product, be sure to turn off the power,
disconnect all cables and watch your step. Dropping the
product may cause injuries from electric shock. So, while
moving the product handle with care.
(8) When cleaning the panel is necessary, wipe it with a soft
and moistened cloth a neural detergent. Caution on
connector area. Do not use chemicals such as thinner or
benzene.
(9) LCD Module emits heat from the Lamp, Backlight lamp,
component parts. Therefore, the environmental
temperature must not exceed 50ᴱ. LCD Module Backlight
Inverter system is driven by high voltage, so it must avoid
conductive materials.
(10) If repairing components with a lead line, high voltage or
high temperature components must be put out from a
lead line and fix.
(11) Do not place an object on the surface of the display. The
glass may break or be scratched.
(12) This product may be damaged if it is subject to excessive
stresses (such as excessive voltage, current, or
temperature). The absolute maximum ratings specify the
limits of these stresses.
(13) Do not cover or wrap with any covering materials while
power is applied to the product.
(14) This product is made from various material such as glass,
metal, and plastic. When discarding it, be sure to contact
a purchase place.
(15) If a discrepancy occurs due to any arbitrary modification
or disassembly, LG Display is not responsible for function,
quality or other items.
(16) Within the warranty period, general faults may be charged
for depending on responsibility for the faults. You handle
with care.
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T
SERVICING PRECAUTIONS
௖N@
@System Assembler
(1) Follow power sequence.
ᴌAbnormal power sequence may cause critical malfunction
or electrical damage.
(2) Prevent physical stress.
(3) Prevent overheat.
ᴌHigh temperature on the surface of the screen may cause
poor quality. Please make LCD Module used on specified
temperature.
ᴌLow temperature under 10ᴱmakes LCD Module respond
slowly, make Backlight worse operated and shorten very
much the lifetime accordingly.
(4) Keep LCD Module dust-free.
ᴌLCD Module is sensitive against dust.
Dust can cause visual or functional problem.
(5) Do not touch TCP area.
ᴌDo not touch TCP area at any case. It causes Driver IC
crack, film crack etc. TCP is the weakest point of LCD
Module.
(6) Do not pull Backlight wire.
ᴌPlease do not pull the Backlight wire it can cause the wire
disconnected or damaged.
(7) Check a connection of the Inverter & Backlight
connectors.
ᴌIncomplete connection with can cause burnt in Backlight
connector or damage the inverter.
(8) Handle with care.
ᴌPlease do not drop, bend or hit the LCD Module. Physical
stress can cause the defect such as broken.
(9) Keep mounting screw length and motor driver’s torque.
ᴌStrong weaken motor driver’s torque can make a
mechanical defect on LCD Module. Please keep the
specification.
(10) Do not operate for a long time under the same pattern.
ᴌOperating LCD Module for a long time under the same
pattern can cause image persistence and can damage it.
(11) Defect panel also handled with care.
ᴌTo prevent making another defect, please handle the
defective LCD Module as a good one.
ᴌDefective LCD Module should be repaired.
(12) Do not stack LCD Modules.
ᴌLCD Module consists of fragile components such as TCPs
or Glasses.
ᴌStacking LCD Module can cause undesired defects.
Color TFT LCD Module is apt to be damaged by both electrical and mechanical stresses.
Users, therefore, are requested to follow the “Servicing precautions of color TFT LCD Module” on the followings.
CAUTION “Before servicing the module, read the safety precautions in this manual.”
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U
(13) Do not provide strong pressure at connecting.
ᴌStrong pressure can transfer the force to TCP which is the
weakest parts of LCD Module. Eventually can make TCP
crack or other unexpected defect.
(14) Let the Backlight Wire backside of LCD Module.
ᴌIf let the Backlight wire front side of LCD Module, the
Backlight connector can hurt the surface of polarizer.
(15) Never connect/disconnect at power on.
ᴌLCD Module consists of CMOS which is known as weak
component against EOS. It can hurt the product.
(16) Electro-static discharge can make damage.
ᴌSemi-assembled product should be handled with wrist strap.
ᴌEarth human body when handle the LCD Module.
Please do not touch the interface connector pin.
ௗN@
@System Assembler/End User
(1) Keep clean the surface.
ᴌPlease wear rubber glove when touch the surface of LCD
Module screen.
ᴌPlease use soft and anti-static material with n-Hexane as
cleaner.
(2) Be careful not to make polarizer scratch.
ᴌSurface of polarizer is soft, so it’s easily scratched.
ᴌPlease do not touch, press or rub on polarizer surface with
materials over HB hardness.
(3) Be careful swift Temperature & Humidity change.
ᴌSwift temperature and or humidity change can make dew
condensation or ice which cause nonconformance such as
malfunction.
(4) Keep out of water.
ᴌWater on in the LCD Module can cause electrical short or
corrosion.
ᴌPlease wipe out or dry water carefully.
(5) Keep LCD Module corrosive gases free.
ᴌCorrosive gas makes the polarizer and the circuitry parts
chemical damages and eventually cause defects.
(6) Keep the suitable temp. & suitable humidity.
ᴌHigh temp. & high humidity shorten the lifetime.
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V
07 Product Overview
08 Module Formation
12 Exploded View
13 Exploded View Parts List
14 Block Diagram
15 Trouble shooting
18 Signal Timing Specifications
20 Timing Check Sheet
24 Disassembly
29 Assembly
34 Packing Form
35 Parts List
*Annexing : Schematic Diagram / Printed Circuit Board
CONTENTS
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W
General Features
37.02 inches(940.3mm) diagonal
877.0mm(H) ᴧ516.8mm(V) ᴧ55.5mm(D) (Typ.)
0.200 mm ᴧ0.600 mm ᴧRGB
1366 horiz. By 768 vert. Pixels RGB stripe arrangement
8-bit, 16.7M colors
500 cd/m2, (Center 1 point Typ.)
Total 123.9Watt (Typ.)
9000g (Typ.)
Transmissive mode, normally black
Hard coating(3H), Anti-glare treatment of the front polarizer(Haze13%)
General Description
TFT-LCD is made up of the lower plate glass with TFT, the upper plate glass with color filter, the middle
Liquid Crystal. TFT convey and control the signal and the Liquid Crystal control transmitted ray as
molecular structure different by admitted volt. And as the ray pass color filter, show up the wanted color
and picture.
The
LC370WXN-SAB1 is 37.02 inches diagonally measured active display area with WXGA resolution(768
vertical by 1366 horizontal pixel array). Each pixel is divided into Red, Green and Blue sub-pixels or dots
which are arranged in vertical stripes. Gray scale or the brightness of the sub-pixel color is determined with
a 10-bit gray scale signal for each dot, thus, presenting a palette of more than 16.7M(true) of colors.
The
LC370WXN-SAB1 has been designed to apply the 8-Bit 1port LVDS interface. The LC370WXN-SAB1 is
intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
and high color depth and fast response time are important.
Active Screen Size
Outline Dimension
Pixel Pitch
Pixel Format
Color Depth
Luminance, White
Power Consumption
Weight
Display Operating Mode
Surface Treatment
Product Overview
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X
Module Formation
Case Assembly
Source PCB Source COF
* Connector 1(CN1) : User Connector
Gate COF
Tape
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Y


RoHS Verified
LC370WXN
(SA)(B1)
* Connector 1(CN1)
Cover Shield(Control)
Backlight System
ID Label
Backlight Label
Cover Shield(Inverter)
Inverter
Control PCB Fixed
screw
Inverter Fixed screw
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QP
MODULE CONNECTOR(CN1) PIN CONFIGURATION
NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Symbol
VLCD
VLCD
VLCD
VLCD
GND
GND
GND
GND
Select
DCR Enable
GND
RA-
RA+
GND
RB-
RB+
GND
RC-
RC+
GND
RCLK-
RCLK+
GND
RD-
RD+
GND
VBR_OUT
VBR_EXT
Reserved
GND
Note
VLCD
VLCD
VLCD
VLCD
GND
GND
GND
GND
Note 1
NC
GND
RA-
RA+
GND
RB-
RB+
GND
RC-
RC+
GND
RCLK-
RCLK+
GND
RD-
RD+
GND
NC
NC
GND
GND
Description
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Ground
Ground
Ground
Ground
Select LVDS Data format
Dynamic CR Enable (‘L’ = Disable , ‘H’ = Enable )
Ground
LVDS Receiver Signal(-)
LVDS Receiver Signal(+)
Ground
LVDS Receiver Signal(-)
LVDS Receiver Signal(+)
Ground
LVDS Receiver Signal(-)
LVDS Receiver Signal(+)
Ground
LVDS Receiver Clock Signal(-)
LVDS Receiver Clock Signal(+)
Ground
LVDS Receiver Signal(-)
LVDS Receiver Signal(+)
Ground
VBR output form LCD module
External VBR input from System to LCD module
Low or NC : Normal Operating
High : Interlace Free Mode
Ground
- LCD Connector(CN1) : FI-X30SSL-HF (Manufactured by JAE) or Equivalent
- Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent
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QQ
INVERTER Connector Pin configuration
NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
VBL
VBL
VBL
VBL
VBL
GND
GND
GND
GND
GND
VBR-A
VON/OFF
VBR-B
Status
Description
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Power Supply +24.0V
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Backlight Ground
Analog dimming voltage
DC 0.0V ~ 3.3V (Typ : 1.65V)
0.0V ~ 5.0V
Burst dimming Voltage
DC 0.0V ~ 3.3V
Normal : Upper 3.0V Abnormal : Under 0.7V
iN
VBL
VBL
VBL
VBL
VBL
GND
GND
GND
GND
GND
VBR-A
On/Off
VBR-B
Status
n
Inverter Connector : S14B-PH-SMC
(manufactured by YeonHo) or Equivalent
- Mating Connector : PHR-14 or Equivalent
1. Connector
1) Connector(Receptacle)
: S14B-PH-SMC-TB ( JST or Yeon Ho)
2) Mating Connector(Plug)
: PHR14 (JST)
* JST : Japan solderless Terminal Co.,Ltd.
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QR
12
10
11
01
02
05
08
07
15
17
06
09
19
04
13
16
18
03
14
Exploded View
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QS
Exploded View Parts List
No. PART NO. DESCRIPTION
01 5135L-0022F/0053J/0013K PROTECT FILM
02 7250L-0082C OPP Film Tape
03 3111L-0236A Case Top Assembly
04
4000L-0006A SCREW
05
6308L-1084A/1618A/1231A POLARIZER(TOP)
6308L-1085A/1619A/1232A POLARIZER(BOTTOM)
06
0IOKL-0114A COF(D-IC, Gate)
07
6871L-1353A PWB(PCB) Assembly, Source _ Left
08
6871L-1354A PWB(PCB) Assembly, Source _ Right
09
0ILUL-0049A COF(D-IC, Source)
10
6871L-1385A PWB(PCB) Assembly, Control
11
3550S-0566A Metal Cover Shield,Control
12
4000L-0006B
SCREW
13
6851L-0090A FFC
14
6900L-0229G Backlight System
15
6091L-0716F Backlight Assembly
16
3550S-0587A Metal Cover Shield,INV.
17
6632L-0504A INVERTER
18 4000L-0038A SCREW
19
3880L-0016K BAG
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QT
Block Diagram
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QU
⊥No Display
Means that the screen is not affected by the signal data when you connect the product to Backlight or
user connector and then 12V input power ON/OFF.
Trouble shooting
Less than Electricity
Consumption
150mA
More than Electricity
Consumption
150mA
Input Current
OK
User Connector
(C-PCB CN1) Cold
soldering/Open/Short
Check
User Connector(CN1)
Resoldering / Replace
/ Reassembly
NG
OK
OK
OK
OK
OK
OK
FFC(CN4,6)
Assembly / Open Check FFC(CN4,6) Reassembly / Replace
NG
VCC Generation Block
Cold soldering/Open/
Short Check
R99, 89~93,C78~82
L1,D12
Under the Parts
Resoldering / Replace
NG
VGH_S Generation Block
Cold soldering /Open/
Short Check
R81,84,86~88,C73~75,D15
Under the Parts
Resoldering / Replace
NG
VGH Modulation Block
Cold soldering/Open/
Short Check
R76, C101, C102
Under the Parts
Resoldering / Replace
NG
VDD Generation Block
Cold soldering /Open/
Short Check
R51,53,56,57,
C57,58,C50~54,56,59
D11,L2
Under the Parts
Resoldering / Replace
NG
TCON Block(UL1)
Output Data Check UL1/Under the Parts Resoldering / Replace
NG
Power Block - Out Voltage
-After of Open the U9
Output Check
VCC(+3.3V)
VGL(-5.0V),VDD(+16.5V)
VGH(+24.0V)
U9/Under the Parts
Resoldering / Replace
NG
OK
Fuse(F1)
Open Check Fuse(F1) Replace
NG
C18,19,67,68,69,70
Short Check C18,19,67,68,69,70 Resoldering / Replace
NG
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QV
⊦Abnormal Display
Means that the screen is affected by the signal data when you connect the product to Backlight or user
connector and then turn 12V input power ON/OFF.
User Connector
(C-PCB CN1)Cold soldering/
Open/Short Check
User Connector(CN1)
Resoldering / Replace
NG
OK
LVDS Termination
Resistor
Open/Short Check
Under the Parts
Resoldering / Replace
NG
OK
S-PCB CN5,6 C-PCB CN4,6
Cold soldering/
Open/Short Check
CN5,6 CN4,6
Resoldering / Replace
NG
Source PCB Gamma Block
Gamma Voltage Level Check
(VDD,G0~17,VCC)
Open/Short/Value Check
Under the Parts
Resoldering / Replace
NG
OK
FFC
Assembly/Open/Short
Check
FFC
Resoldering / Replace
NG
OK
US1 Power Block
Output Voltage/Open/Short
Check
US1/ Under the Parts
Resoldering / Replace
NG
OK
OK
Vcom Compensation
Block
Cold soldering/Open/
Short Check
Under the Parts
Resoldering / Replace
NG
OK
ASIC(UL1)
Cold soldering/Open/Short/
Quality Check
ASIC(UL1)
Resoldering / Replace
NG
⊧Flicker
Controling P-vcom, Check the
change of screen P-vcom Readjust
OK
NG
P-Vcom Block
Cold soldering/Open/Short Check
-R56,67,70,73,77~79,
82,C61,71,72,U5
Under the Parts
Resoldering / Replace
NG
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QW
⊨Abnormal Color
Means that the abnormal screen displays at specified color when you connect the product to Backlight or user connector and then turn 12V input power ON/OFF.
ASIC (UL1) Cold
soldering/Open/Short/
Badness Check
NO ASIC(UL1)
Resoldering/
Replace
YES
ASIC (UL1) Cold
soldering/Open/Short/
Badness Check
NO ASIC(UL1)
Resoldering/
Replace
YES
ASIC (UL1) Cold
soldering/Open/Short/
Badness Check NO ASIC(UL1)
Resoldering/
Replace
USER CNT(CN1)Cold
soldering/Open/Short/
Badness/Cable assembly
Check
NO USER CNT(CN1)
Resoldering/
Reassembly
USER CNT(CN1)Cold
soldering/Open/Short/
Badness/Cable assembly
Check
NO USER CNT(CN1)
Resoldering/
Reassembly
USER CNT(CN1)Cold
soldering/Open/Short/
Badness/Cable assembly
Check
NO USER CNT(CN1)
Resoldering/
Reassembly
YES
YES YES YES
FFC
Assembly/Open/
Short Check
NO FFC
Reassembly/
Replace
YES
FFC
Assembly/Open/
Short Check
NO FFC
Reassembly/
Replace
YES
FFC
Assembly/Open/
Short Check
NO FFC
Reassembly/
Replace
C-PCB CN4, 6
Cold soldering/Open/
Short Check
NO C-PCB CN4, 6
Resoldering/
Replace
C-PCB CN4, 6
Cold soldering/Open/
Short Check
NO C-PCB CN4, 6
Resoldering/
Replace
C-PCB CN4, 6
Cold soldering/Open/
Short Check
NO C-PCB CN4, 6
Resoldering/
Replace
YES
YES YES YES
S-PCB AR1,2,11,12
Cold soldering/Short/
Open Check
NO S-PCB AR
Resoldering/
Replace
YES
S-PCB AR1,2,11,12
Cold soldering/Short/
Open Check
NO S-PCB AR
Resoldering/
Replace
YES
S-PCB AR1,2,11,12
Cold soldering/Short/
Open Check
NO S-PCB AR
Resoldering/
Replace
S-PCB CN5,6
Cold soldering/Open/
Short Check
NO S-PCB CN5,6
Resoldering/
Replace
S-PCB CN5,6
Pool soldering/Open/
Short Check
NO S-PCB CN5,6
Resoldering/
Replace
S-PCB CN5,6
Pool soldering/Open/
Short Check
NO S-PCB CN5,6
Resoldering/
Replace
YES
G Wrong Color B Wrong Color
R Wrong Color
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QX
Signal Timing Specifications
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QY
Signal Timing Waveforms
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RP
Timing Check Sheet
@@@@ @@@@
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