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22" TFT LCD COLOR MONITOR
TABLE OF CONTENTS
Description Page Description Page
Important Safety Notice ............................................. 2 Scaler Board Schematic Diagram ..............................26 ~ 31
Technical Data & Power Management ....................... 3 ~ 4 Power Board Schematic Diagram ..............................32 ~ 33
Connection to PC ....................................................... 5 Button Board Schematic Diagram ............................. 34
OSD Menu Control Level Structure ........................... 6 USB Board Schematic Diagram ............................. 35
Advanced OSD Adjustment ....................................... 7 Scaler Board Layout Side View ................................. 36 ~ 37
OSD Attention Signal ................................................. 8 Power Board Layout Side View ................................. 38 ~ 39
Safety and troubleshooting information .................... 9 Button Board Layout Side View ................................. 40
Definition of Pixel Defects .......................................... 10 ~ 11 USB Board Layout Side View ................................. 41
Wiring Diagram .......................................................... 12 Exploded View ........................................................... 42
Mechanical Instructions ............................................. 13 ~ 16 Recommended Parts List .......................................... 43 ~ 45
F/W Upload Instructions ............................................ 17 ~ 18 Spare Parts List ......................................................... 46 ~ 47
DDC Instructions ........................................................ 19 ~ 21 Different Parts List ..................................................... 48
DDC DATA ................................................................. 22 ~ 23 General Trouble Shooting Guide ............................... 49 ~ 63
Safety Instructions, Warnings and Notes ................... 24 General Product Specification ................................... 64 ~ 77
Block Diagram ........................................................... 25 Safety Check Process ............................................... 78
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC
EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINE.
Subject to modification Oct. 5th. 2007 EN :
2 220CW8 LCD Important Safety Notice
Proper service and repair is important to the safe, reliable FOR PRODUCTS CONTAINING LASER :
operation of all Philips Consumer Electronics Company**
Equipment. The service procedures recommended by Philips DANGER - In visible laser radiation when open.
and described in this service manual are effective methods of AVOID DIRECT EXPOSURE TO BEAM.
performing service operations. Some of these service
operations require the use of tools specially designed for the CAUTION - Use of controls or adjustments or
purpose. The special tools should be used when and as performance of procedures other than
recommended. those specified herein may result in
hazardous radiation exposure.
It is important to note that this manual contains various
CAUTIONS and NOTICES which should be carefully read in CAUTION - The use of optical instruments with this
order to minimize the risk of personal injury to service Product will increase eye hazard.
personnel. The possibility exists that improper service
methods may damage the equipment. It is also important to
understand that these CAUTIONS and NOTICES ARE NOT
EXHAUSTIVE. Philips could not possibly know, evaluate and
advise the service trade of all conceivable ways in which
service might be done or of the possible hazardous
TO ENSURE THE CONTINUED RELIABILITY OF THIS
consequences of each way. Consequently, Philips has not
PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
undertaken any such broad evaluation. Accordingly , a
REPLACEMENT PARTS, WHICH ARE LISTED WITH
servicer who uses a service procedure or tool which is not
THEIR PART NUMBERS IN THE PARTS LIST SECTION
recommended by Philips must first satisfy himself thoroughly
OF THIS SERVICE MANUAL.
that neither his safety nor the safe operation of the equipment
will be jeopardized by the service method selected.
* * Hereafter throughout this manual, Philips Consumer
Take care during handling the LCD module with backlight
Electronics Company will be referred to as Philips.
- Must mount the module using mounting holes arranged in
- Do not press on the panel, edge of the frame strongly or
electric shock as this will result in damage to the screen.
Critical components having special safety characteristics are
identified with a by the Ref. No.in the parts list and
- Do not scratch or press on the panel with any sharp objects,
enclosed within a broken line*
such as pencil or pen as this may result in damage to the
(where several critical components are grouped in one
area) along with the safety symbol on the schematics or
- Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).
Use of substitute replacement parts which do not have the
same specified safety characteristics may create shock, fire,
- Make certain that treatment persons body are grounded
or other hazards.
through wrist band.
Under no circumstances should the original design be
- Do not leave the module in high temperature and in areas
modified or altered without written permission from Philips.
of high humidity for a long time.
Philips assumes no liability , express or implied, arising out of
any unauthorized modification of design.
- Avoid contact with water as it may a short circuit within
Servicer assumes all liability .
- If the surface of panel become dirty, please wipe it off with
a soft material.( Cleaning with a dirty or rough cloth may
damage the panel.)
* Broken Line
Technical Data 220CW8 LCD 3
1. General Specification
1.1 Panel characteristic Input signal levels : 700 mVpp
Sync. input signals : Analog R/G/B separate inputs
Panel source : LPL LM220WE1-TLD1 Separate horizontal and vertical /
: CMO M220Z1-L03 Composite (H+V) TTL level,
Sync On Green (SOG) sync
Screen type : TN+film 0.3Vp-p Negative
Screen dimensions : 22 inches (diagonal) 16:10
Input impedance (Digital) : Signal TMDS link
(3 channels : Rx0 & Rx1 & RX2-/+)
CMO M220Z1-L03 Video interface : Both Analog and Digital input.
Resolution : 1680 X 1050 (WXGA+) It can be switching via OSD option.
Outside dimensions : 493.7 (W) X 320.1 (H) X 16.5 (D)
Pixel pitch (mm) : 0.282 x 0.282 1.5 Physical characteristics
Color pixel arrangement : R. G. B. Vertical Stripe
Display surface : Hard-coating (3H), Non-glare type Unit dimensions
Color depth : 16.7M colors - Width : 513.8 mm
Backlight : 4 lamps - Height : 416.2 mm
Active area (mm) : 473.76 (H) x 296.1(V) - Depth : 213.6 mm
View angle (CR>10) : >= 170 (H) / 160(V) (typical)
Contrast ratio : >= 1000 : 1 Packed unit dimensions
White luminance : >= 300 nits (7.0mA) - Width : 565 mm
Color gamut : >= 72% - Height : 174 mm
Response time : 5 ms - Depth : 472 mm
LPL LM220WE1-TLD1 Packed unit dimensions
Resolution : 1680 X 1050 (WXGA+) (China only)
Outside dimensions : 493.7 (W) X 320.1 (H) X 16.5 (D) - Width : 567 mm
Pixel pitch (mm) : 0.282 x 0.282 - Height : 189 mm
Color pixel arrangement : R. G. B. Vertical Stripe - Depth : 480 mm
Display surface : Hard-coating (3H), Non-glare type
Color depth : 16.7M colors Weight (monitor only) : 5 Kg (Including I/F cable 240g)
Backlight : 4 lamps
Active area (mm) : 473.76 (H) x 296.1(V) Title angel : - 5 ° + 2 / - 0 ° ( forward )
View angle (CR>10) : >= 170 (H) / 160(V) (typical) + 25 ° + 0 / - 3 ° ( backward )
Contrast ratio : >= 1000 : 1
White luminance : >= 300 nits (7.0mA) Swivel angel : nil
Color gamut : >= 72% Height adjustment : nil
Response time : 5 ms Portrait display : nil
AC input: - voltage : AC 90 - 264 V,
- frequency : 50 / 60 + 2 Hz
1.2 Scanning frequencies
Power consumption : < 50W maximum
Horizontal scan range : 30 - 93 K Hz (automatic)
Vertical scan range : 56 - 76 Hz (automatic) Ambient temperature : 0 to 40 degree C
1.3 Video Operating
Video dot rate : < 205 MHz (Over 165 MHz, - Temperature : 0 to 35 degree C
Warning message will show up) - Humidity : 85% (max.)
- Altitude : 0 - 3658 m
Input impedance - Air pressure : 600 - 1100 mBAR
(Analog signal input)
- video : 75 ohm Storage
- Sync : 2.2K ohm - Temperature : -20 to 60 degree C
- Humidity : 95% max
- Altitude : 0 - 12192 m
- Air pressure : 300 - 1100 mBAR
(Recommend at 5 to 35 degree C,
Humidity less then 60%)
System MTBF : 50,000 Hrs
4 220CW8 LCD Technical Data
2. Pin Assignment Automatic Power Saving
2.1 PC analog video input with D - sub connector. If you have VESA / DPMS compliance display card or software
installed in your PC, the monitor can automatically reduce
Connector type of analog signal cable : power consumption when power saving function active. And if
D - Sub male with DDC2B pin assignment. an input from keyboard, mouse or other devices is detected,
Blue connector with thumb-operated jackscrews. the monitor will automatically wake up. The following table
shows the power consumption and signaling of this automatic
Pin assignment : power saving feature:
Mode HSYNC VSYNC Video Pwr-cons. Indication Rec. time
Power-On On On active < 50 W Green LED --
Off Off Off blanked <1W Amber LED <3s
DC Power Off N/A <1W LED Off
PIN SIGNAL PIN SIGNAL PIN SIGNAL This monitor must comply with the Microsoft On Now
No. No. No. specification, with two power management states, as defined
1 Red 6 Red GND 11 Sense (GND) by the VESA DPMS document. And must appropriately display
the DPMS states. Also comply with Environmental Protection
2 Green/ SOG 7 Green GND 12 Bi-directional Agency (EPA) Energy Star and TCO03 power management
data standard strictly.
3 Blue 8 Blue GND 13 H/H+V sync
4 Sense (GND) 9 DDC +3.3V or 14 V-sync
5 Cable Detect 10 Logic GND 15 Data clock
ENERGY STAR is a U.S. Registered mark. AS AN ENERGY
STAR PARTNER, PHILIPS HAS DETERMINED THAT THIS
PRODUCT MEETS THE ENERGY STAR GUIDELINES OF
2.2 PC digital video input with DVI-D connector.
Connector type of DVI-D signal cable :
DVI-D male with DDC2B pin assignment. Factory preset mode:
White connector with thumb-operated jackscrews.
This monitor has 18 factory-preset modes as indicated in the
Pin assignment : following table:
Item H.Freq. (KHz) Mode Resolution V.Freq. (Hz) BW(MHz)
1 31.469 IBM VGA 10H 640x350 70.086
2 31.469 IBM VGA 3H 720x400 70.087
3 31.469 IBM VGA 12H 640x480 59.94
Pin Description Pin Description Pin Description 4 35 MACINTOSH 640x480 67
No. No. No. 5 37.5 VESA 640x480 75
6 35.156 VESA 800x600 56.25
1 T.M.D.S. data2- 9 T.M.D.S. data1- 17 T.M.D.S. data0- 7 37.879 VESA 800x600 60.317
8 46.875 VESA 800x600 75
2 T.M.D.S. data2+ 10 T.M.D.S. data1+ 18 T.M.D.S. data0+
9 48.363 VESA 1024x768 60.004
3 T.M.D.S. data2 11 T.M.D.S. data1 19 T.M.D.S. data0 10 60.023 VESA 1024x768 75.029
shield shield shield
11 63.981 VESA 1280x1024 60.02
4 No Connect 12 No Connect 20 No Connect 12 79.976 VESA 1280x1024 75.025
5 No Connect 13 No Connect 21 No Connect 13 55.469 VESA-reduced 1440x900 59.901 88.75
6 DDC clock 14 +5V Power 22 T.M.D.S clock 14 55.935 VESA 1440x900 59.887 106.5
15 70.635 VESA 1440x900 74.984 136.75
7 DDC data 15 Ground (for 23 T.M.D.S. clock+ 16 66.587 CVT 2.3MA-R 1920x1080 60.0 (for DVI- 138.5
17 65.29 CVT1.76MW 1680x1050 60 146
8 No Connect 16 Hot plug detect 24 T.M.D.S. clock- 18 CVT1.76MW-R 1680x1050 60 119
Connection to PC 220CW8 LCD 5
1. Connection to PC 2. Function key definition
Please follow the steps to connect your LCD Monitor to PC.
a. Assembly LCD Monitor with base
b. Connect to PC (1) To switch monitor's power on and off
(2) To access OSD menu
(1) Turn off your computer and unplug its power cable. (3) To adjust the OSD menu
(2) Connect the monitor signal cable to the video connector (4) To adjust brightness of the display
on the back of your computer. (5) To change the signal input source
(3) Plug the power cord of your computer and your monitor (6) Automatically adjust the horizontal position, vertical position,
Into a nearby outlet. phase and clock Settings/Return to previous OSD level
(4) Turn on your computer and monitor. If the monitor (7) SmartImage. There are five modes to be selected: Office
Displays an image, installation is complete. Work, Image Viewing, Entertainment, Economy and Off.
3. Description of the On Screen Display
On-Screen Display(OSD) is a feature in all Philips LCD
monitors. It allows and end user to adjust screen performance
or select functions of the monitors directly through an on-screen
instruction window. A user friendly on screen display interface is
5 shown as below:
(1) USB downstream port
(2) AC power input
(3) DVI-D input(Available for selected countries)
(4) VGA input
(5) USB upstream port
(6) Kensington anti-thief lock
Set your Monitor at 1680*[email protected] for best performance.
It is also strongly recommended to use DVI input(may require
the optional DVI cable) for the true digital enjoyment.
c. Accessory Pack
Basic and simple instruction on the control keys.
Power cord VGA cable EDFU CD
According to the above OSD structure, users can :
press UP or DOWN buttons to move the cursor,
press MENU button to confirm the choice or change,
press UP or DOWN button to adjust the value,
press MENU button to save the changes.
press AUTO button to automatically adjust the horizontal
DVI cable (Optional) position, vertical position, phase and clock setting.
6 220CW8 LCD OSD Menu Control Structure
4. The OSD tree Note:
Below is an overall view of the structure of the On-Screen sRGB is a standard for ensuring correct exchange of colors
Display. You can use this as a reference when you want to between different devices(e. g. Digital cameras, monitor,
work your way around the different adjustments later on. printers, scanners, etc.)
4.1 Available for EU/AP/CN Model Using a standard unified color space, sRGB will help
represent pictures taken by an sRGB compatible device
correctly on your sRGB enabled Philips monitor. In that way,
Main Menu (1st Level) Sub Menu (2nd Level)
the colors are calibrated and you can rely on the correctness
of the colors shown on your screen.
Picture Brightness Important with the use of sRGB is that the brightness and
Contrast contrast of your monitor is fixed to a predefined setting as
Factory well as the color gamut. Therefore it is important to select the
Color Color Temperature(5000K, sRGB setting in the monitor's OSD.
6500K, 7500K, 8200K, 9300K,
To do so, open the OSD by pressing the OK button on the
User Define(Red, Green, Blue)
side of your monitor. More the down button to go to color and
press OK again. Use the right button to go to sRGB. Then
move the down button and press OK again to exit the OSD.
After this, please do not change the brightness or contrast
setting of your monitor. If you change either of these, the
monitor will exit the sRGB mode and go to a color
temperature setting of 6500K.
OSD Settings Horizontal
Transparency(Off, 1/4, 2/4, 3/4, 4/4)
OSD Time Out(5s, 10s, 20s, 30s,
Advanced OSD Adjustment 220CW8 LCD 7
Advanced OSD Adjustment 4. Entering Burn-in mode and others
1. Front control panel If you access into factory mode, press MENU-PICTURE-
FACTORY, then press MENU to confirm, OSD menu will
convert into another format as below:
Model Name BIOS Revision BIOS issued date
2. To Lock/Unlock OSD function HUDSON 220CW8 V0.28 2007-07-16
The OSD function can be locked by pressing MENU button
for more than 10 seconds, the screen shows following
windows for 3 seconds. Auto Color
Every time when you press any button, this message Color Reset
appears on the screen automatically.
Gain R200 G189 B191
ATTENTION Offset R125 G111 B111
MONITOR CONTROLS LOCKED Power On Timer:
Locked OSD function can be released by pressing MENU
Power On Timer Reset
button for more than 10 seconds. While press MENU button
for OSD unlocked purpose, the screen will keep showing Burn In NO
OSD MAIN MENU LOCKED until OSD function unlocked and
screen automatically shows following window for 3 seconds.
Move the cursor by MENU button, and press the UP or
MONITOR CONTROLS UNLOCKED DOWN button to change the burn-in mode from YES to NO.
Leave factory mode by simply power off the monitor.
3. Access Factory Mode
To hold AUTO and POWER buttons, you can saw the LED
light flashing at this time. Then release the AUTO button and * If you only want to enter burn in mode, please don't change
Keep pressing the POWER button. The monitor will power on any other setting items as above listed.
and LED light give out orange light. Press MENU to bring up * Unfortunately, if some settings has been changed by
OSD menu for confirmation as below: unknown reasons or wrong operation. Please refer to the
chapter of "W/B Adjustment" to guide the operator how to
restore the default settings or do adjustment.
Explanation of above listed selections.
Burn in On/Off Enter Aging Mode
Auto Color Auto Color Adjustment
Con Contrast Adjustment
Bri Brightness Adjustment
ADC Gain Value Adjustment
(Auto adjustment by H/W when implement Auto Color function)
ADC Offset Value Adjustment
(Auto adjustment by H/W when implement Auto Color function)
sRGB sRGB Color Temperature Gain Value Adjustment
9300K 9300K Color Temperature Gain Value Adjustment
6500K 6500K Color Temperature Gain Value Adjustment
Color Update Save All of Color Temperature Gain Value
Factory Reset Memory Recall to Factory Default Settings
If this message appeared, means monitor already entered
the factory mode.
8 220CW8 LCD OSD Attention Signals
Clock & Phase Adjustment
Due to the different quality of video signal generated from ATTENTION
graphics cards. It is necessary to adjust CLOCK and PHASE
functions for the optimal video display of LCD monitor. So
maybe some flicker appeared as Fig.1 & 2. CHECK CABLE CONNECTION
2. AUTO ADJUSTMENT
This screen appears when you touch the AUTO button. It will
disappear when the monitor is properly adjusted.
Following steps will guide you to make correct adjustment of
CLOCK and PHASE:
a. Restart your computer.
0 62 100
b. Press MENU to bring up OSD menu after the OS
(Operation System) boot up.
c. Press UP or DOWN to select the option of More Settings
press MENU to bring up its submenu as shown in Fig.3. 3. USE 1680X1050 FOR BEST RESULT
d. Select the Clock or Phase adjustment items in submenu This message appears at the top of the OSD window when
and press UP orDOWN to adjust. the video mode input is not the recommended 1680*1050.
(If the phenomenon as Fig.1, you should adjust " Phase") Other modes may result in some picture distortion. Please
(If the phenomenon as Fig.2, you should adjust " Clock") adjust the video mode to 1680*1050 at 60Hz for best display
e. Quit OSD by press MENU button to save the settings. quality.
USE [email protected]
FOR BEST RESULT
4. NO VIDEO INPUT
When you select video input between AUTO, VGA or DVI
signal via INPUT function of OSD menu, if the DVI function
you are selecting is not available, following message will
appear on the screen.
However, CLOCK and PHASE functions are only available
while analog video signal is supplied. Operating unit under NO VIDEO INPUT
digital signal state, the video clock information can be
obtained from graphics cards directly. Therefor, it is
unnecessary to adjust these functions.
OSD Attention signal 5. VGA(D-SUB)
When you select VGA function, if it's not available, following
The monitor will detect various display situation message will appear on the screen.
automatically. When the monitor detects the problems, the
screen will show the different warning signals to remind you
what is happen to your monitor. ATTENTION
1. CHECK CABLE CONNECTION VGA(D-SUB)
This screen appears if there is no video signal input. Please
check that the signal cable is properly connected to the video
card of PC and make sure PC is on.
Safety and Troubleshooting Information 220CW8 LCD 9
Safety precautions and maintenance Installation Locations
WARNING: Use of controls, adjustments or Avoid exposure to heat and extreme cold.
procedures other than those specified in this
documentation may result in exposure to shock, Do not store or use the LCD monitor in locations exposed to
electrical hazards and/or mechanical hazards. heat, direct sunlight or extreme cold.
Read and follow these instructions when connecting and using Avoid moving the LCD monitor between locations with large
your computer monitor: temperature differences. Choose a site that falls within the
following temperature and humidity ranges.
a. To protect your display from possible damage, do not put Temperature: 0-35°C 32-95°F
excessive pressure on the LCD panel. When moving your Humidity: 20-80% RH
monitor, grasp the frame to lift; do not lift the monitor by
placing your hand or fingers on the LCD panel. Do not subject the LCD monitor to severe vibration or high
b. Unplug the monitor if you are not going to use it for an impact conditions. Do not place the LCD monitor in the trunk of
extensive period of time. a car.
c. Unplug the monitor if you need to clean it with a slightly
damp cloth. The screen may be wiped with a dry cloth when Take care not to mishandle this product by either knocking or
the power is off. However, never use alcohol, solvents or dropping it during operation or transportation.
d. Consult a service technician if the monitor does not operate Do not store or use the LCD monitor in locations where there is
normally when you have followed the instructions in this a high level of humidity or in dusty environments. Do not allow
manual. water or other liquids to spill on or into the LCD monitor.
e. The casing cover should be opened only by qualified service
personnel. Trouble Shooting
f. Keep the monitor out of direct sunlight and away from stoves
or any other heat source. This page deals with problems that can be corrected by the
g. Remove any object that could fall into the vents or prevent user. If the problem still persists after you have tried these
proper cooling of the monitor's electronics. solutions, contact your nearest Philips dealer.
h. Do not block the ventilation holes on the cabinet.
i. Keep the monitor dry. To avoid electric shock, do not expose
it to rain or excessive moisture.
Having this problem Check these items
j. When positioning the monitor, make sure the power plug and
outlet are easily accessible. a. Make sure the power cord is plugged into the power
k. If turning off the monitor by detaching the power cable or DC No Picture outlet and into the back of the monitor.
b. First, ensure that the power button on the front of the
power cord, wait for 6 seconds before attaching the power (Power LED not lit) monitor is in the OFF position, then press it to the ON
cable or DC power cord for normal operation. position.
l. To avoid the risk of shock or permanent damage to the set,
do not expose the monitor to rain or excessive moisture. No Picture
a. Make sure the computer is turned on.
m. IMPORTANT: Always activate a screen saver program during b. Make sure the signal cable is properly connected to
your application. If a still image in high contrast remains on (Power LED is amber or
c. Check to see if the monitor cable has bent pins.
the screen for an extended period of time, it may leave an yellow)
d. The Energy Saving feature may be activated.
'after-image' or 'ghost image' on front of the screen. This is a
well-known phenomenon that is caused by the shortcomings Screen says a. Make sure the monitor cable is properly connected
inherent in LCD technology. In most cases, the afterimage to your computer.
(Also refer to the Quick Set-Up Guide).
will disappear gradually over a period of time after the power b. Check to see if the monitor cable has bent pins.
has been switched off. Be aware, that the afterimage c. Make sure the computer is turned on.
symptom cannot be repaired and is not covered under
warranty. Screen says a. Make sure the monitor cable is properly connected to
o. Warning for lifting monitor - Do not use the area underneath your computer. (Also refer to the Quick Set-Up Guide).
the logo cover to grip or lift the monitor. Placing weight on the b. Check to see if the monitor cable has bent pins.
c. Make sure the computer is turned on.
logo cover can cause it to break away from the body and
cause the monitor to fall. When lifting the monitor, place one a. The Auto Function is designed for use on standard
hand under the monitor's frame. Macintosh or IBM-compatible PCs running Microsoft
AUTO button not working
b. It may not work properly if using nonstandard PC or
a. Press the Auto button.
Display position is
b. Adjust the image position using the
Phase/Clock of More Settings in OSD Main Controls.
Image vibrates on the a. Check that the signal cable is properly connected
screen to the graphics board or PC.
a. Press the Auto button.
Vertical flicker appears b. Eliminate the vertical bars using the Phase/Clock
of More Settings in OSD Main Controls.
* Consult a service technician if the monitor does not operate a. Press the Auto button.
normally when the operating instructions given in this manual Horizontal flicker appears b. Eliminate the vertical bars using the Phase/Clock
have been followed. of More Settings in OSD Main Controls.
10 220CW8 LCD Definition of Pixel Defects
Adjust the contrast and brightness on On-Screen Bright Dot Defects
The screen is too bright
Display.(The backlight of the LCD monitor has a fixed life
span. When the screen becomes dark or begins to flicked, Bright dot defects appear as pixels or sub pixels that are
please contact your sales representative).
always lit or 'on'. That is, a bright dot is a sub-pixel that
If an image remains on the screen for an extended
stands out on the screen when the monitor displays a dark
period of time, it may be imprinted in the screen pattern. There are the types of bright dot defects:
An after-image appears
and leave an after-image. This usually disappears
after a few hours.
An after-image remains
This is characteristic of liquid crystal and is not
caused by a malfunction or deterioration of the
the power has been liquid crystal. The after-image will disappear after One lit red, green or blue sub pixel
turned off a peroid of time. R
Green, red, blue, dark,
The remaining dots are normal characteristic of
the liquid crystal used in today's technology.
white dots remains
For further assistance, refer to the Consumer Information Centers list Two adjacent lit sub pixels:
and contact your local Philips distributor.
- Red + Blue = Purple
- Red + Green = Yellow Y
- Green + Blue = Cyan (Light Blue) C
Definition of Pixel Defects
This section explains the different types of pixel defects and Three adjacent lit sub pixels W
defines acceptable defect levels of each type. In order to (one white pixel)
quality for repair or replacement under warranty, the number
of pixel defects on a TFT LCD panel must exceed these
1. Definition of Pixels and Sub-pixels
A red or blue bright dot must be more than 50
A pixel, or picture element, is composed of three sub pixels percent brighter than neighboring dots while a
in the primary colors of red, green and blue. Many pixels green bright dot is 30 percent brighter than
together form an image. When all sub pixels of a pixel are lit, neighboring dots.
the three colored sub pixels together appear as a single
white pixel. When all are dark, the three colored sub pixels
together appear as a single black pixel. Other combinations
of lit and dark sub pixels appear as single pixels of other Black Dot Defects
Black dot defects appear as pixels or sub pixels that are
always dark or 'off'. That is, a dark dot is a sub-pixel that
subpixel subpixel subpixel stands out on the screen when the monitor displays a light
pattern. These are the types of black dot defects:
R G B One dark sub pixel
R G B
Two or three adjacent
Pixel dark sub pixels
2. Types of Pixel Defects
Pixel and sub pixel defects appear on the screen in different
ways. There are two categories of pixel defects and several
types of sub pixel defects within each category.
Definition of pixel defects 220CW8 LCD 11
3. Proximity of Pixel Defects
Because pixel and sub pixels defects of the same type that
are near to one another may be more noticeable, Philips also
specifies tolerances for the proximity of pixel defects.
Perfect Panel - ISO 13406-2 Class II compliant do-defect-
BRIGHT DOT DEFECTS ACCEPTABLE LEVEL
1 lit subpixel 3
2 adjacent lit subpixels 1
3 adjacent lit subpixels (one white pixel) 0
Distance between two bright dot defects* 15mm
Bright dot defects within 20 mm circle 0
Total bright dot defects of all types 3
BLACK DOT DEFECTS ACCEPTABLE LEVEL
1 dark subpixel 5
2 adjacent dark subpixels 2
3 adjacent dark subpixels 1
Distance between two black dot defects* 15mm
Black dot defects within 20 mm circle* 1
Total black dot defects of all types 5
TOTAL DOT DEFECTS ACCEPTABLE LEVEL
Total bright or black dot defects of all types 5
* 1 or 2 adjacent sub pixel defects = 1 dot defect
Power/B P. C. B
Scaler/B P. C. B
USB/B P. C. B
Button/B P. C. B
Mechnical instructions 220CW8 LCD 13
4. Take off hinge cover.
1. Put down the LCD, all tools prepared.
Fig. 2 5. Remove 4pcs screws on stand and take off it.
2. Take off the base.
Fig. 3 6. Separate the rear cover and panel.
3. Take off the stand cover.
14 220CW8 LCD Mechnical instructions
7. Disconnect the B/B and USB/B cable and take off all the
tapes. 10. Remove 3pcs screws from right side of panel.
8. Remove 3pcs screws from USB/B and take off it.
11. Remove 2pcs screws from down side of panel.
12. Separate panel and bezel as picture show.
9. Remove 3pcs screws from left side of panel.
Mechnical instructions 220CW8 LCD 15
Fig. 13 Fig. 16
13. Remove 3pcs screws from B/B and take off it from bezel. 16. Remove 1pcs screws from P/B shielding.
Fig. 14 Fig. 17
14. Remove 2pcs screws from left side panel. 17. Take off 4pcs lamp cable from P/B.
Fig. 15 Fig. 18
17. Disconnect the LVDS cable..
15. Remove 2pcs screws from right side panel.
16 220CW8 LCD Mechnical instructions
19. Separate the panel and shielding. Fig. 22
22. Disconnect the M/B and P/B.
20. Remove 8pcs screws from M/B and P/B.
21.Remove 4pcs IO NUT from M/B.
Electrical instruction 220CW8 LCD 17
F/W upload instruction
Configuration and procedure (ISP Tool)
"ISP Tool " software is provided by NOVATEK to upgrade the
firmware of Scaler IC. It is a windows-based program, which
cannot be run in MS-DOS.
System and equipment requirements:
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 98/2000/XP.
3. ISP software " EasyUSB Writer ".
(Need to install, it can not be performed directly.Double press
"EasyUSB WriterV3.0.exe" to start installing,then chose the path
that you want to install ,then it will perform automatically.)
4. Firmware uploading tool, as shown in Fig1.
4. Double press the "H00" file or "H01 file" ,then it acquires the
hex file automatically, and a message will be showed in
the dialog box to notice the operator. At this moment, please
verify the checksum of the hex file with the firmware control
table to make sure the suitable file will be used. Mentioned
firmware control table will be provided by suppliers shown in
* Connect the firmware uploading tool as Fig.1 shown.
* Before the servicer perform the ISP Tool program, the
Communicating connection must be well done.
* When the connection fixed, power on the monitor.
Setup and perform the ISP Tool program
1. Save the software in your PC, and create a shortcut
on the desktop.
2. Double click the ISP Tool. exe icon at the desktop then
appears window as shown in Fig. 2. Fig. 4
5. Press the "ISP ON" button ,then the dialog box will has the
information "ISP ON" ,else has the information "ISP Fail".If the
information is "ISP Fail" ,check the connectivity ,then try it again as
shown in Fig. 5.
3. Press the "Load File" button then select the path that save
hex file ,then chose file type as "Bank Switch(128K,256K)" as Fig. 5
shown in Fig. 3.
18 220CW8 LCD Electrical instructions
6. Press "Auto"button of the toolbox. Program will perform the DDC instructions
loading process automatically. When the loading process
completed, and the dialog box appeared the message of General
Programing Success. If Program perform fail ,resume step 5.
DDC Data Re-programming
In case the DDC data memory IC or main EEPROM which
storage all factory settings were replaced due to a defect, the
serial numbers have to be re-programmed.
It is advised to re-soldered DDC IC and main EEPROM from the
old board onto the new board if circuit board have been
replaced, in this case the DDC data does not need to be re-
* According to the design concept of this product, DDC data will
be divided into two parts to deposit in different place:
DDC data of VGA interface are saved in scaler IC.
DDC data of DVI interface are saved in EEPROM(IC 24C02).
Additional information about DDC (Display Data Channel) may
be obtained from Video Electronics Standards Association
(VESA). Extended Display Identification Data(EDID) information
may be also obtained from VESA.
System and equipment requirements
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 98/2000/XP.
3. Installation software of " TVI Tool ".
4. Executive program " TVI Tool. exe ".
5. ISP tool kit, as shown in Fig1.
Including: a. Alignment fixture x 1
b. Printer cable (LPT type) x 1
c. D-sub to D-sub cable x 1
d. Analog to DVI ada