LG Philips LP141WP1-TLA1 User manual

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CAUTION
BEFORE SERVICING THE MODULE, READ THE SAFETY PRECAUTIONS
IN THIS MANUAL.
MODEL : LP141WP1 - TLA1 [ Lead Free ]
Module

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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.
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 Ass’y and Backlight Ass’y. Board Ass’y 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 Ass’y includes Lamp Ass’y, optical sheets(Diffuser, Prism), LGP(Light Guide Panel),
supporter main.
When using / handing this LCD Module, pay attention to the below warning and cautions.

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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 50 . 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.Philips LCD 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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SERVICING PRECAUTIONS
System Assembler
(1) Follow power sequence.
Abnormal power sequence may cause critical malfunction
or electrical damage.
(2) Prevent physical stress.
(3) Prevent overheat.
High temperature on the surface of the screen may cause
poor quality. Please make LCD Module used on specified
temperature.
Low temperature under 10 makes LCD Module respond
slowly, make Backlight worse operated and shorten very
much the lifetime accordingly.
(4) Keep LCD Module dust-free.
LCD Module is sensitive against dust.
Dust can cause visual or functional problem.
(5) Do not touch TCP area.
Do 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.
Please do not pull the Backlight wire it can cause the wire
disconnected or damaged.
(7) Check a connection of the Inverter & Backlight
connectors.
Incomplete connection with can cause burnt in Backlight
connector or damage the inverter.
(8) Handle with care.
Please 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.
Strong 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.
Operating 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.
To prevent making another defect, please handle the
defective LCD Module as a good one.
Defective LCD Module should be repaired.
(12) Do not stack LCD Modules.
LCD Module consists of fragile components such as TCPs
or Glasses.
Stacking 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.

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(13) Do not provide strong pressure at connecting.
Strong 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.
If 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.
LCD Module consists of CMOS which is known as weak
component against EOS. It can hurt the product.
(16) Electro-static discharge can make damage.
Semi-assembled product should be handled with wrist strap.
Earth human body when handle the LCD Module.
Please do not touch the interface connector pin.
System Assembler/End User
(1) Keep clean the surface.
Please wear rubber glove when touch the surface of LCD
Module screen.
Please use soft and anti-static material with n-Hexane as
cleaner.
(2) Be careful not to make polarizer scratch.
Surface of polarizer is soft, so it’s easily scratched.
Please do not touch, press or rub on polarizer surface with
materials over HB hardness.
(3) Be careful swift Temperature & Humidity change.
Swift temperature and or humidity change can make dew
condensation or ice which cause nonconformance such as
malfunction.
(4) Keep out of water.
Water on in the LCD Module can cause electrical short or
corrosion.
Please wipe out or dry water carefully.
(5) Keep LCD Module corrosive gases free.
Corrosive gas makes the polarizer and the circuitry parts
chemical damages and eventually cause defects.
(6) Keep the suitable temp. & suitable humidity.
High temp. & high humidity shorten the lifetime.

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CONTENTS
1. Product Overview ............................................ 7
2. Module Formation ........................................... 8
3. Exploded View .............................................. 10
4. Exploded View Parts List .............................. 11
5. Block Diagram ...............................................12
6. Trouble shooting ............................................13
7. Timing Check Sheet .......................................18
8. Disassembly ..................................................19
9. Assembly .......................................................23
10. Parts List .......................................................29
11. Records of Revision .......................................32
12. Derivative description .................................... 33
*Annexing : Schematic Diagram / Printed Circuit Board

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1. Product Overview
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 LP141WP1-TLA1 is 14.1 inches diagonally measured active display area with WXGA+ resolution(900
vertical by 1440 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 6-bit gray scale signal for each dot, thus, presenting a palette of more than 262,144 colors.
The LP141WP1-TLA1 has been designed to apply the interface method that enables low power, high speed,
low EMI.
The LP141WP1-TLA1 is intended to support applications where thin thickness, low power are critical
factors and graphic display are important. In combination with the vertical arrangement of the sub-pixels,
the LP141WP1-TLA1 characteristics provide an excellent flat display for office automation products such
as Notebook PC.
General Features
14.1 inches diagonal
320(H) 206(V) 5.5(D, max)mm
0.2109 mm 0.2109 mm
1440 horiz. By 900 vert. Pixels RGB strip arrangement
6-bit, 262,144 colors
220 cd/m2(Typ. 5point)
Total 6.0 Watt(Typ.)
435g (Max.), 425g(Typ.)
Transmissive mode, normally white
Anti-glare treatment of the front polarizer
Active Screen Size
Outline Dimension
Pixel Pitch
Pixel Format
Color Depth
Luminance, White
Power Consumption
Weight
Display Operating Mode
Surface Treatment

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2. Module Formation
* Connector 1(CN1) : User Connector
Cover Shield(Source)
* Connector 1(CN1)
Source PCB
ID Label
Source COF(D-IC)
Backlight Label
Backlight Ass’y
Adhesive Tape
Cover Shield(Gate)
Gate COF(COF)
Case Ass’y
Backlight Wire
Backlight Wire
Fixed Tape Inverter
Inverter Fixed Screw
Inverter Bracket
Adhesive Tape

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Module Connector Pin configuration(CN1)
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
GND
VCC
VCC
V EEDID
BIST
Clk EEDID
DATA EEDID
RA1-
RA1+
GND
RB1-
RB1+
GND
RC1-
RC1+
GND
RCLK1-
RCLK1+
GND
RA2-
RA2+
GND
RB2-
RB2+
GND
RC2-
RC2+
GND
RCLK2-
RCLK2+
Description
Ground
Power Supply, 3.3V Typ.
Power Supply, 3.3V Typ.
DDC 3.3V power
Reserved for LCD supplier test point
DDC Clock
DDC Data
Negative LVDS differential data input,R0-G5,G0
Positive LVDS differential data input,R0-G5,G0
Ground
Negative LVDS differential data input,G1-G5,B0-B1
Positive LVDS differential data input,G1-G5,B0-B1
Ground
Negative LVDS differential data input,B2-B5,HS/VS/DE
Positive LVDS differential data input,B2-B5,HS/VS/DE
Ground
Negative LVDS differential clock input
Positive LVDS differential clock input
Ground
Negative LVDS differential data input,R0-G5,G0
Positive LVDS differential data input,R0-G5,G0
Ground
Negative LVDS differential data input,G1-G5,B0-B1
Positive LVDS differential data input,G1-G5,B0-B1
Ground
Negative LVDS differential data input,B2-B5,HS/VS/DE
Positive LVDS differential data input,B2-B5,HS/VS/DE
Ground
Negative LVDS differential clock input
Positive LVDS differential clock input
Notes
1. Interface chips
1.1 LCD : DAWIN,DTML012(LCD Controller)
including LVDS Receiver
(DAWIN co., LVD4107 x 2each)
1.2 System : It must include international standard
LVDS Trasmitter.
Pin to Pin compatible with LVDS
2. Connector
2.1 LCD : GT101-30S-HR11,LGC or its compatibles.
2.2 Mating : FI-X30M or equivalent.
2.3 Connector Pin arrangement
30 1
[LCD Module Rear View]

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3. Exploded View
03
01
07
05
08
09
06
04
10
15
16
02
12
13
11
14

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4. Exploded View Parts List
No. PART NO. DESCRIPTION
1 5135L-0011V Protect Film
2 7250L-0023A Masking, Tape
3 3111L-0149A Case Ass’y
4
6308L-0039A POLARIZER(TOP)
6308L-00657A POLARIZER(BOTTOM)
5 6091L-0350A BACKLIGHT Ass’y
6 6913L-0260C Lamp Ass’y
7 7250L-0080D Tape, Adhesive
8 7250L-0077A Tape, Teraoka
9 7250L-0074C Tape, Teraoka
10 3550S-0271A Cover shield , Gate
11 3550S-0263A Cover shield , Source
12 0IOKL-0039A TCP (D-IC, Gate)
13 0IHYL-0105A TCP (D-IC, Source)
14 6871L-0785A PWB(PCB) Ass’y , Source
15 6632L-0263A INVERTER
16 1STZL-0002B Screw

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5. Block Diagram

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6. Trouble shooting
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 3.3V(Vcc) input power ON/OFF.
F1 Pool soldering /
Damage check
F1 Replace /
Resoldering
Electricity Consumption
100mA
CN1 PIN Damage /
Pool soldering check
Replace /
Resoldering
less than more than
YES
YES
YES
NO
NO
L1 Pool soldering /
Damage
voltage check
Replace /
Resoldering
NO
US1 Pool soldering/Short/
Oneself badness check/
RESET check
Replace /
Resoldering
NO
Source, Gate input/output check
D/IC oneself badness /
Bonding badness
Replace
NO
* Notes : It can use a Power IC(US1), One Chip.

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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
3.3V(Vcc) input power ON/OFF.
CN1 PIN bend / Pool soldering check Replace/Resoldering
NO
YES
Panel Edge damage check Panel dump
NO
YES
UC1 Input/Output, Voltage, Signal check
Short / Pool soldering / Around circuit check
Replace/Resoldering
YES
NO
RESET, RESET2 Voltage check
R17,R18,C11,C12
Around circuit check
Replace/Resoldering
YES
NO
VDD,VCC Voltage check US1
Around circuit check Replace/Resoldering
YES
NO
VGH Voltage check
D3 Around circuit check Replace/Resoldering
YES
NO
VGL Voltage check
R62, R64
Around circuit check Replace/Resoldering
YES
NO
VCOM Voltage check
VR1,C41 Around circuit check Replace/Resoldering
YES
NO
GMA Voltage check SOURCE DRIVE IC GMA
Check of lower GMA TP
Replace/Resoldering
YES
YES
NO
Source PCB
Internal Short / Open check Replace
NO
S - #1, G - #1
Bonding check
Replace
NO

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Abnormal Color
Means that the abnormal screen displays at specified color when you connect the product to Backlight or user connector and then turn 3.3V(Vcc) input power ON/OFF.
CN1 #1~24, AR1,AR2
Pool soldering / Short check
Replace /
Resoldering
NO
YES
UC1 #36~48
#53~64
Pool soldering /
Short check
Replace /
Resoldering
NO
YES
R19~R30
Pool soldering / Short Damage
check
Replace /
Resoldering
NO
YES
Source D/IC
Check input / output
Replace /
Resoldering
NO
YES
Source PCB
Internal Short / Open check
Replace /
Resoldering
NO * Notes : Applied with mini LVDS T-con : RGB
signal and Clock are not divided.

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EDID Operation Screen
How to use Button
(1) < Write Data > : Write EDID Data(Standard Data at the left> on EEPROM.
(2) < Write Data&Verify > : After confirming EDID Data, mark the OK, NG.
(3) < Read Data > : Read and mark EDID Data to the EEPROM.
(4) < Read Data&Verify > : Altering marking EDID Data by EEPROM, compare with standard data to mark
OK, NG.
(5) < Init > : Initializing board => OK : GREEN, NG : RED
When board displays RED, After click the inspection option <MENU>, check the address.
(6) < Start > : After connecting the Module, confirm connected state => OK : GREEN, NG : RED
When board displays RED contact connector or confirm power(3.3V).
(7) < Close > : End the program.
How to work
(1) Operate the program.
(2) Click the <lnit> button.
(3) Open the wanted model data, If not, program is edited.
(4) After connecting Module, confirm power(3.3V).
(5) Progress the wanted one(Write & Read).

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EDID Badness
On the test - screen, when comparing,
standard data with Read data, If it is
failed, it is displayed NG on the test-
screen.
CN1 PIN bend / Pool soldering
Damage check
Replace /
Resoldering
YES
NO
R12, 13, C13
Pool soldering / Damage check
Replace /
Resoldering
NO
YES
U1 Pool soldering / Short /
Oneself badness check
Replace /
Resoldering
NO
YES
EDID Checksum check
(41) EDID Re-write
NO

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7. Timing Check Sheet
DATA_S = 2.9ns
DATA
_ Setup
DATA_H = 3.5ns
DATA
_ Hold
SSC_H = 6.3ns
SSC
_ High
SSC_L = 5.9ns
SSC
_ Low
Condition : (VCC = 3.3V)

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8. Disassembly
Separate the Cover Shield(Gate).
Should be put on (electro static) wrist strap.
Should be cleared the bottom.
Light the Ion Blower.
Separate the Cover Shield(Source).
Separate the Adhesive Tape of the opposite Gate.
Separate Cover
Shield(Gate)
Separate Cover
Shield(Source)
Separate
Adhesive Tape
Separate
Adhesive/Fixed Tape.
Separate Inverter
Fixed Screw.
Separate
Inverter
Attach dummy sheet on the
upper Polarizer.
Remove dust on
the upper Polarizer.
Separate
Case Ass’y
Separate Board Ass’y from
Backlight Ass’y.
Remove dust on the lower
Polarizer.
Take charge of Board
Ass’y in tray.
Attach dummy sheet on the
lower Polarizer.
Attach the dummy sheet on
Backlight Ass’y. Charge the Backlight Ass’y in Bag.

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Separate the
Adhesive Tape &
Backlight Wire fixed Tape of the opposite Source PCB.
Separate the fixed screw of Inverter.
Separate the Inverter.
If you need to replace the Inverter, separate the
Inverter.
It s unnecessary to repair the normal TCP / Polarizer.
Separate the Case Ass’y.
Separate Cover
Shield(Gate)
Separate Cover
Shield(Source)
Separate
Adhesive Tape
Separate
Adhesive/Fixed Tape.
Separate Inverter
Fixed Screw.
Separate
Inverter
Attach dummy sheet on the
upper Polarizer.
Remove dust on
the upper Polarizer.
Separate
Case Ass’y
Separate Board Ass’y from
Backlight Ass’y.
Remove dust on the lower
Polarizer.
Take charge of Board
Ass’y in tray.
Attach dummy sheet on the
lower Polarizer.
Attach the dummy sheet on
Backlight Ass’y. Charge the Backlight Ass’y in Bag.