Philips 200P4VG/00 User manual

20" TFT LCD Colour Monitor
Horizontal frequencies
30 - 93 kHz
Service
Service
Service
TABLE OF CONTENTS
SAFETY NOTICE
Published by BCU Monitor Printed in Taiwan Copyright reserved Subject to modification Oct 28 2003
©GB 3138 106 10312
200P4VG/00
Uh3 200P4
Important Safety Notice..................................2
Technical Specifications.................................3
Front/Rear Panel Components........................5
Attention Signals............................................8
Troubleshooting.............................................9
Failure Mode of LCD Panel............................ 10
Definition of Pixel Defects...............................11
Wiring Diagram..............................................12
Mechanical Instructions.............................. ...13~14
Display Adjustment........................................15~16
Connecting The Monitor..................................4
OSD User Mode.............................................6
OSD Tree.......................................................7
Safety Test Requirements...............................17
DDC Instructions............................................18~22
DDC Data..................................................... .23~24
ISP Instruction................................................25~26
Functional Description....................................27~29
Repair Tips.....................................................30
Function Block Diagram..................................31
Scaler gm1601 Diagram..................................35
Memory Diagram ............................................36
Connector Diagram.........................................37
Audio AMP Diagram........ ...............................39
Control Board Diagram and C.B.A....................41
Power Board C.B.A.........................................42~43
Scaler Board C.B.A.........................................44~45
Video Board C.B.A..........................................46~47
Audio Board C.B.A..........................................48
Exploded View................................................49
Spare Parts List..............................................50~53
General Product Specification.........................54~74
Different Parts List..........................................75~76
Power Diagram...............................................32
Inverter Diagram.............................................33
DVI / DSUB Diagram.......................................34
Video Decoder Diagram..................................38
Audio PWR Diagram.......................................40
Description Description
Page Page
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
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.
F
http://www.wjel.net

Important Safety Notice
2
FOR PRODUCTS CONTAINING LASER :
Invisible laser radiation when open.
AVOID DIRECT EXPOSURE TO BEAM.
Use of controls or adjustments or
performance of procedures other than
those specified herein may result in
hazardous radiation exposure.
The use of optical instruments with this
product will increase eye hazard.
DANGER-
CAUTION-
CAUTION-
TO ENSURE THE CONTINUED RELIABILITY OF THIS
PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S
REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR
PART NUMBERS IN THE PARTS LIST SECTION OF THIS
SERVICE MANUAL.
Uh3 200P4
Proper service and repair is important to the safe, reliable
operation of all Philips Company** Equipment. The service
procedures recommended by Philips and described in this
service manual are effective methods of performing service
operations. Some of these service operations require the use
of tools specially designed for the purpose. The special tools
should be used when and as recommended.
It is important to note that this manual contains various
CAUTIONS and NOTICES which should be carefully read in
order to minimize the risk of personal injury to service
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
consequences of each way. Consequently, Philips has not
undertaken any such broad evaluation. Accordingly, a
servicer who uses a service procedure or tool which is not
recommended by Philips must first satisfy himself thoroughly
that neither his safety nor the safe operation of the equipment
will be jeopardized by the service method selected.
* * Hereafter throughout this manual, Philips Company will be
referred to as Philips.
Critical components having special safety characteristics are
identified with a by the Ref. No. in the parts list and
enclosed within a broken line*
(where several critical components are grouped in one area)
along with the safety symbol on the schematics or
exploded views.
Use of substitute replacement parts which do not have the
same specified safety characteristics may create shock, fire,
or other hazards.
Under no circumstances should the original design be
modified or altered without written permission from Philips.
Philips assumes no liability, express or implied, arising out of
any unauthorized modification of design.
Servicer assumes all liability.
WARNING
* Broken Line
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.
- 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 soft
material. (Cleaning with a dirty or rough cloth may damage the
panel.)
Go to cover page
http://www.wjel.net

Uh3 200P4 3
Technical Specifications
Go to cover page
Technical Specifications*
LCD PANEL
* Type: TFT LCD
* Screen size: 20.1" / 51cm
* Pixel Pitch: 0.255 x 0.255mm
* LCD Panel type: 1600 x 1200 pixels
R.G.B. vertical stripe
Anti-glare polarizer, hard coated
* Effective viewing area: 408 x 306 mm
* Display Colors: 8 bits interface (16M colors)
SCANNING
Vertical refresh rate: 56Hz-85Hz
Horizontal Frequency: 30kHz- 94kHz (Analog input)
VIDEO
* Video dot rate: 165 MHz
* Input impedance
- Video: 75 ohm
- Sync: 2K2 ohm
* Input signal levels: 0.7 Vpp
* Sync input signal: Separate sync
Composite sync
Sync on green
* Sync polarities: Positive and negative
* S-Video: Y input 1.0Vpp, C input 0.3Vpp, 75 ohm input
impedance
* CVBS: Composite, 1.0Vpp, 75 ohm input impedance
*Video: interface D-Sub (Analog)
DVI-D (Digital)
AUDIO-IN
* Input signal level: 0.7 Vpp
* Headphone out signal level: 20mW x 2, 32
* Input signal connector:3.5mm mini jack
* Loudspeaker: 4W Stereo Audio (2W/channel RMSx2, 200Hz-
12kHz, 4 ohm,THD=10%)
Optical characteristics
* Contrast ratio: 400:1 (typ.)
* Brightness: 250 cd/m2(typ.)
* Peak contrast angle: 6 o'clock
* White Chromatcity: x: 0.283 y: 0.297 (at 9300K)
x: 0.313 y: 0.329 (at 6500K)
* Viewing Angle: (C/R>10)
Upper >88 degree (typ.)
Lower >88 degree (typ.)
Left >88 degree (typ.)
Right >88 degree (typ.)
* Response time: 16 ms (typ.)
- Rise time: 9 ms (typ.)
- Fall time: 7 ms (typ.)
sRGB
sRGB is a standard for ensuring correct exchange of colors between
different devices (e.g. digital cameras, monitors, printers, scanners, etc.)
Using a standard unified color space, sRGB will help represent
pictures taken by an sRGB compatible device correctly on your sRGB
enabled Philips monitors. In that way, the colors are calibrated and you
can rely on the correctness of the colors shown on your screen.
Important with the use of sRGB is that the brightness and contrast of
your monitor is fixed to a predefined setting as well as the color gamut.
Therefore it is important to select the sRGB
H. freq (kHz) Resolution V. freq (Hz)
31.5 640*350 70 (IBM VGA 10h)
31.5 720*400 70
31.5 640*480 60
37.5 640*480 75
35.2 800*600 56
37.9 800*600 60
46.9 800*600 75
48.4 1024*768 60
60.0 1024*768 75
69.0 1152*870 75
63.9 1280*1024 60
80.0 1280*1024 75
75.0 1600*1200 60
33.8 1080i 60
45.0 720p 60
Power Management Definition
VESA
Mode Video H-sync V-sync Power Used LED color
ON Active Yes Yes < 65W Green
OFF Blanked No No < 1.5W Amber
Physical Specifications
* Dimension (WxHxD): 488 x 459 x220 mm (incl. Pedestal)
* Weight: 7.5 Kg
* Tilt / Swivel: -5 ~ 25 degree/+--
175 degree
* Power supply: 100 ~ 240 VAC, 50/60 Hz
* Power consumption:50 W* (typ.)
* Temperature: 5 C to 35 C (operating)
-20 C to 60 C (storage)
* Relative humidity:20% to 80%
* System MTBF 50K hrs (excluding CCFL 40K hrs)
* Cabinet color: 200P4VG/200P4SG: Light Gray
200P4VB/200P4SB: Black
200P4VS/200P4SS: Silver
http://www.wjel.net

Uh3 200P4
4Connecting The Monitor
Go to cover page
Connect to PC
Connect power cord, VGA, DVI and audio cable onto rear of
monitor firmly.
If you use an Apple Macintosh , you need to connect the special Mac
adapter to one end of the monitor signal cable.
TM
Connect the cables to the back of your computer by following steps
(a) Turn off your computer and unplug its power cord.
(b) Connect the VGA or DVI cable to video connector.
(c) Connect the audio cable.
(d) Plug the power cord of computer and monitor into a nearby outlet.
(e) Turn on your computer and monitor. If the monitor displays an
image, installation is complete.
Connect to DVD/VCR/VCD
Connect to Earphone
http://www.wjel.net

Uh3 200P4 5
Front/Rear Panel Component
Go to cover page
To switch monitor's power On and Off
Power LED
To access OSD menu
To adjust the OSD
To adjust brightness of the display
To adjust the OSD
To adjust speakers volume
Automatically adjust the horizontal position,
vertical position, phase and clock setting
Signal inputs selection
Activate PIP (Picture in Picture) window
Front View Rear View
1 CVBS video input (for video model 200P4V- only )
2 S-Video input (for video model 200P4V- only )
3 Earphone jack
4 VGA input
5 DVI-D input
6 Audio R/L input
7 PC audio input
8 AC power input
http://www.wjel.net

Uh3 200P4
6OSD User Mode
Go to cover page
On-Screen Display
Description of the On Screen Display
What is the On-Screen Display?
Basic and simple instruction on the control keys.
This is a feature in all Philips LCD monitors. It allows an end user to adjust screen performance of the
monitors directly though an on-screen instruction window. The user interface provides user-friendliness
and ease-of-use when the user is operating the monitor.
When you press the button on the front control of your monitor, the On-Screen Display (OSD) Main
Controls window will pop up and you can then start making adjustments to your monitor's various features.
Use the or the keys to make your adjustments.
http://www.wjel.net

Uh3 200P4 7
OSD Tree
Go to cover page
http://www.wjel.net

Uh3 200P4
8Attention Signals
Go to cover page
Attention
Signals
Display Time Condition
CANNOT
DISPLAY
THIS VIDEO
MODE,
CHANGE
COMPUTER
DISPLAY
INPUT TO
1600x1200 @
60HZ
30 mins This warning appears when the
input signal from the computer
is not in a standard video mode
or is out of the monitor's
scanning range. After 30 mins,
monitor enters sleeping mode.
CANNOT
DISPLAY
THIS VIDEO
MODE
30 mins This warning appears when the
VEDIO input signal is not in a
standard video mode or is out of
the monitor's scanning range.
After 30 mins, monitor enters
sleeping mode.
NO VIDEO
INPUT
30 mins This message appears when
there is no signal input while
power on, or interface cable
disconnected, or while power
off. After 30 mins, monitor
enters sleeping mode.
ENTERING
SLEEP MODE
3 secs This message appears w
hen
monitor is about to enter power
saving mode.
WAITING
FOR
AUTOMATIC
ADJUSTMEN
T
Till auto
adjustment
finished
This message is displayed
when the auto adjustment
button is pressed. It disappears
when automatic adjustments
are completed.
USE 1600 X
1200 FOR
BEST
RESULT
On top of
OSD
main menu
without
flashing.
The message will show up and
still at the top of the OSD main
controls in red color when the
input resolution is not the
1600x1200.
OSD MAIN
CONTROLS
LOCKED
3secs/ortill
"OSD MAIN
CONTROLS
UNLOCKED"
appear
This message will appear for 3
seconds to indicate the OSD
MAIN CONTROLS locked or un-
lock it by pressing "OK (MENU)"
button for more than 10
seconds while there is video
input from PC.
OSD MAIN
CONTROLS
UNLOCKED
3 secs This message will appear for 3
seconds to indicate the OSD
MAIN CONTROLS un-locked by
pressing "OK (MENU)" button
for more than 10 seconds while
there is video input from PC.
The window of
"OSD MAIN
CONTROLS"
60 secs This message will appear when
the "OK" button is pressed.
the window of
"BRIGHTNES
S"
60 secs This message will appear when
the BRIGHTNESS hot key is
pressed while monitor is not in
OSD operation.
the window of
"VOLUME"
60 secs This message will appear when
the VOLUME hot
key is pressed while monitor is
not in OSD operation.
ANALOG (D-
SUB) INUT
1). Disappear
on 2nd
pressing of
Input selection
hot key 2). 3
secs
* First pressing on Input
selection hot key while PC VGA
signal displays on screen. The
attention signal is showing the
current display signa l mode.
* PC VGA signal is selected by
1. Auto detecting while power
on 2. Input selection switching
from other sources
DIGITAL (DVI)
INPUT
1). Disappear
on 2nd
pressing of
Input selection
hot key 2). 3
secs
* First pressing on Input
selection hot key while PC DVI-
D signal displays on screen.
The attention signal is showing
the current display signal mode.
* PC DVI-D signal is selected by
1.Auto detecting while power on
2.Input selection switching from
other sources
S-VIDEO
INPUT
1). Disappear
on 2nd
pressing of
Input selection
hot key 2). 3
secs
* First pressing on Input
selection hot key while SVIDEO
signal displays on screen. The
attention signal is showing the
current display signal mode.
* S-VIDEO signal is selected by
1.Auto detecting while poweron
2.Input selection switching from
other sources
CVBS
INPUT
1). Disappear
on 2nd
pressing of
Input selection
hot key 2). 3
secs
* First pressing on Input
selection hot key while CVBS
signal displays on screen. The
attention signal is showing the
current display signal mode.
* CVBS signal is selected by
1.Auto detecting while power on
2.Input selection switching from
other sources
ANALOG (D-
SUB) INPUT
NOT
AVAILABLE
1). 3secs
2). Disappear
when next
signal
has been
detected while
power on
* PC VGA signal is not available
while signal
input selection.
* PC VGA signal is not available
on signal auto
detection while power on.
DIGITAL (DVI)
INPUT NOT
AVAILABLE
1). 3secs
2). Disappear
when next
signal
has been
detected while
power on
* PC DVI-DL signalis not
available while signal
input selection.
* PC DVI-D signal is not
available on signal auto
detection while power on.
S-VIDEO
INPUT NOT
AVAILABLE
1). 3secs
2).Disappear
when next
signal has
been detected
when power
on
* S-VIDEO signal is not
available while signal
input selection.
* S-VIDEO signal is not
available on signal auto
detection while power on.
CVBS
INPUT NOT
AVAILABLE
1). 3secs
2).Disappear
when next
signal has
been detected
while power
on
* CVBS signal is not available
while signalinput
selection.
* CVBS signal is not available
on signal auto
detection while power on.
SEARCHING
SIGNALS
Disappear
when signal
detected
While signal input detection
http://www.wjel.net

Uh3 200P4 9
Troubleshooting
Go to cover page
Common Problems
Having this problem? Check these items
No Picture
(Power LED not lit)
* Make sure the Power cable is plugged to the wall and the
back of the monitor.
* Firstly, ensure that the , power button in front of the monitor
is in the OFF position, then press it to the ON position again.
No Picture
(Power LED is amber or yellow)
* Make sure the computer is turned on.
* Make sure the signal cable is properly connected to your
computer.
* Check to see if the monitor cable has bent pins.
* The Energy Saving feature may be activated.
Screen says * Make sure the monitor cable is properly connected to your
computer. (Also refer to the Quick Set- Up Guide).
* Check to see if the monitor cable has bent pins.
* Make sure the computer is turned on.
AUTO button not working
properly
* The Auto Function is designed for use on standard
Macintosh or IBM-compatible PCs running Microsoft
Windows.
* It may not work properly if using nonstandard PC or video
card.
Imaging Problems
Display position is incorrect * Press the Auto button.
* Adjust the image position using the Horizontal Position &/or
Vertical Position in OSD Main Controls.
Image vibrates on the screen * Check that the signal cable is properly connected to the
graphics board or PC.
Vertical flicker appears * Press the Auto button.
* Eliminate the vertical bars using the Clock Adjustment of
VIDEO NOISE in OSD Main Controls.
Horizontal flicker appears * Press the Auto button.
* Eliminate the horizontal bars using the Phase Adjustment of
VIDEO NOISE in OSD Main Controls.
The screen is too bright or too
dark
* Adjust the contrast and brightness on OSD Main Controls.
(The backlight of the LCD monitor has a fixed life span.
When the screen becomes dark or begins to flicker, please
contact yourdealer.
An after-image appears * If an image remains in the screen for an extended period of
time, it may be imprinted in the screen and leave an after-
image. This usually disappears after a few hours.
An after-image remains after
the power
has been turned off.
* This is characteristic of liquid crystal and is not caused by a
malfunction or deterioration of the liquid crystal. The after-
image will disappear after a given amount of time.
Green, red, blue, dark, and
white dots
remains
* The remaining dots are normal characteristic of the liquid
crystal used in today's technology.
http://www.wjel.net

10 Uh3 200P4 Failure Mode of LCD Panel
Go to cover page
Failure description Phenomenon
Vertical dim lines
Vertical block defect
)
Vertical lines defect
(Always bright or dark
Horizontal block defect
Horizontal dim lines
Horizontal lines defect
(Always bright or dark)
Has bright or dark pixel
.
..
.
.
.
.
..
.
.
.
Bright pixel
Dark pixel
..
....
Polarizer has bubbles
Polarizer has bubbles
Foreign material inside
polarizer. It shows linear or
dot shape.
....
Concentric circle formed
Bottom back light of LCD is
brighter than normal
Backlight un-uniformity
Backlight has foreign material.
Black or white color, linear or
circular type
Quick reference for failure mode of LCD panel
This page presents problems that could be made by LCD panel. It is
not necessary to repair circuit board. Simply follow the Mechanical
instruction on this manual to eliminate failure by replace LCD panel
or backlight tubes.
http://www.wjel.net

BRIGHT DOT DEFECTS ACCEPTABLE LEVEL
MODEL 200P4
1 lit subpixel 4 or fewer
2 adjacent lit subpixels 2 or fewer
3 adjacent lit subpixels (one white
pixel) 0
Distance between two bright dot
defects* 15 mm or more
Total bright dot defects of all types 4 or fewer
BLACK DOT DEFECTS ACCEPTABLE LEVEL
MODEL 200P4
1 dark subpixel 4 or fewer
2 adjacent dark subpixels 2 or fewer
3 adjacent dark subpixels 0
Distance between two black dot
defects* 15 mm or more
Total black dot defects of all types 4 or fewer
TOTAL DOT DEFECTS ACCEPTABLE LEVEL
MODEL 200P4
Total bright or black dot defects of
all types 5 or fewer
11
Uh3 200P4
Go to cover page
Definition of Pixel Defects
0. General
This section explains the different types of pixel defects and
defines acceptable defect levels of each type. In order to qualify
for repair or replacement under warranty, the number of pixel
defects on a TFT LCD panel must exceed these acceptable levels.
1. Definition of Pixels and Subpixels
A pixel, or picture element , is composed of three subpixels in the
primary colors of red, green and blue. Many pixels together from
an image. When all subpixels of a pixel are lit, the three colored
subpixels together appear as a single white pixel. When all are
dark, the three colored subpixels together appear as a single black
pixel. Other combinations of lit and dark subpixels appear as
single pixels of other colors.
2. Types of Pixel Defects
Pixel and subpixel defects appear on the screen in different ways.
Bright dot defects
Bright dot defects appear as pixels or subpixels that are always lit
or "on"”. These are the types of bright dot defects:.
One lit red, green or blue subpixel
Two adjacent lit subpixels:
- Red + Blue = Purple
- Red + Green = Yellow
- Green + Blue = Cyan (Light Blue)
Three adjacent lit subpixels
(One white pixel)
Black dot defects
Black dot defects appear as pixels or subpixels that are always
dark or "off"”TThese are the types of black dot defects:
One dark subpixel
Two or three adjacent dark subpixels
3. Pixel Defect Tolerances
In order to qualify for repair or replacement due to pixel defects
during the warranty period, a TFT LCD panel in a PHILIPS flat
panel monitor must have pixel or subpixel defects exceeding the
tolerances listed in the following tables.
Pixel
Subpixel Subpixel
Subpixel
Note: 1 or 2 adjacent subpixel defects = 1 dot defect
http://www.wjel.net

12 Uh3 200P4 Wiring Diagram
Go to cover page
1961
http://www.wjel.net

Uh3 200P4 13
Mechanical Instructions
Go to cover page
1. Back view as Fig. 1.
Fig. 1
2. Remove cable cover as Fig. 2 and Fig. 3.
Fig. 3Fig. 2
3. Remove Base cover as Fig. 4 and Fig. 5.
4. Unscrew 4 screws to remove base as Fig. 6 and Fig. 7.
Fig. 4 Fig. 5
Fig.6 Fig.7
5. Remove audio case as Fig. 8, Fig. 9 and Fig. 10.
Fig. 8 : Unscrew 3 screws.
Fig. 9 : Open two clicks.
Fig. 10
6. Remove video cover as Fig. 11 and Fig. 12.
Fig. 12
Fig. 11
7. Unscrew 2 screws to remove video module as Fig.13 and Fig.14.
Fig. 13 Fig. 14
8. Remove back cover as Fig.15, Fig.16, Fig.17 ,Fig.18 and Fig. 19.
Fig. 16 : Open 3 clicks on left side.
Fig. 17 : Open 3 clicks on right side.
Fig. 18 : Open 3 clicks on top side.
Fig. 19
Fig. 15 : Unscrew 1 screw..
http://www.wjel.net

Uh3 200P4
14
Go to cover page
Mechanical instructions
9. Unscrew 3 screws to remove inverter shielding as Fig.20 and
Fig.21.
Fig. 20 Fig. 21
10. Remove scaler shielding as Fig. 22, Fig. 23 and Fig. 24.
Fig. 22: Remove 4 screws.
Fig. 23: Remove 4 screws.
Fig. 24
11. This is the service position as Fig. 25.
Fig. 25
12. Remove power board as Fig. 26 and Fig. 27.
Fig. 26 : Unscrew 4
screws.
Fig. 27 : Unscrew 1
screw.
13. Remove scaler board as Fig. 28
Fig. 28 : Unscrew 2
screws.
14. Unscrew 6 screws to remove metal frame in order to replace
LCD panel as Fig. 29..
Fig. 29
http://www.wjel.net

Uh3 200P4 15
Go to cover page
Display Adjustment
Display Adjustment:
Press and button simultaneously when monitor power
on. Adjust OSD menu to lower position of screen (i.g. adjust
Horizontal OSD Position and Vertical OSD Position to 0 at OSD
Control sub-menu. Then press or button to move the
cursor to yellow area ( see red circle on Fig 1). Press
button to access to factory mode (see Fig 2.). Please make sure
firmware version and EDID data are correct. Please do display
alignment after aging 1 hour at least.
Auto Left
Up Down
Menu
Fig 2. Factory menu :
Fig. 1
2. Apply a 1280x1024/60Hz signal with white pattern.Set
brightness control at 100% and contrast control at 50%. Adjust
the R.G.B gain to reach special color temperature on center of
screen.
2.1 Aim the probe CA-A30 at the center of screen as Fig. 4
2.2 Remove the lens protective cover of probe CA-A30.
2.3 Set Measuring/viewing selector to Measuring position for reset
analyzer. (Zero calibration) as Fig. 5
2.4 Turn on the colour analyzer (CA-110).
2.5 Press 0-CAL button to start reset analyzer. See Fig. 6
Measurement/viewing selectorMeasurement/viewing selector
cover (black)cover (black)
Fig. 4 Fig. 5
Fig. 6
0-CAL
PC mode WHITE-D adjustment (B)
1 Apply 1280X1024/60Hz mode with 64 gray level pattern as Fig
3. Set main controls brightness control at 100% and contrast to
50% on User mode. Set color setting at original panel color on
User mode. Move cursor to "AutoColor" item on factory mode,
press "OK" key to activate this function.
Fig. 3
2.6 Switch light probe to Viewing position.
2.7 Move the Lens barrel forward or backward to get clear image as
shown in Fig. 7
2.8 Switch light probe to Measuring position. It should be able to
indicate colour value on the CA-110.
Measurement/viewing selectorMeasurement/viewing selector
Fig. 7
Clear image
http://www.wjel.net

16 Uh3 200P4
Go to cover page
Display Adjustment
Alignment hits:
R for x value , G for y value, B and Sub-brightness for Y value on the
Colour analyzer.
2.10 Exit factory mode and User mode, then do DC on/off and AC on/of
to reset CPU.
2.9 Adjust the R, G, B Sub-Gain on factory mode for the screen
center, the 1931 CIE chromaticity (X, Y) co-ordinates shall be
as follows.
9300°K 6500°K
Use Minolta CA-110 for colour coordinates and luminance check.
Luminance is > 200 Nits in the center of the screen when
brightness at 100% and contrast set to 100%.
sRGB
x(center) 0.313 ±0.020
y(center) 0.329 ±0.020
Ynits 200 ±10 Nit
Factory Preset (B):
After finished all the adjustment, set:
OSD Default Setting:
Brightness: 100%
Contrast: 50%
Adjust size: Full screen
Language: English
Colour: 6500K for IMAGE MANAGEMENT
OSD position: middle of the LCD screen
Input Selection: Default as Analogue (D-sub)
PIP size: Medium
PIP position: up right corner
PIP audio source: PC Audio
PIP video source: CVBS
Volume: 50%
http://www.wjel.net

All units that are returned for service or repair must pass the
original manufactures safety tests. Safety testing requires both
and testing.Hipot Ground Continuity
HI-POT TEST INSTRUCTION
1. Application requirements
2. Test method
1.1 All mains operated products must pass the Hi-Pot test as
described in this instruction.
1.2 This test must be performed again after the covers have
been refitted following the repair, inspection or modification
of the product.
2.1 Connecting conditions
2.1.1 The test specified must be applied between the parallel-
blade plug of the mainscord and all accessible metal
parts of the product.
2.1.2 Before carrying out the test, reliable conductive
connections must be ensured and thereafter be
maintained throughout the test period.
2.1.3 The mains switch(es) must be in the "ON" position.
2.2 Test Requirements
All products should be HiPot and Ground Continuity tested as
follows:
Test 2820VDC 1700VDC Test current:
voltage (2000VAC) (1200VAC) 25A,AC
Test time:
Test time 3 seconds 1 second 3 seconds(min.)
(min.) Resistance
required:
Trip set at 100 uA 5 mA <=0.09+R ohm,
current for Max. R is the
(Tester) limitation; set resistance of
at 0.1 uA for the mains cord.
Min. limitation
Ramp set at 2
time seconds
Condition HiPot Test for HiPot Test for Ground Continuity
products where products where Test requirement
the mains input the mains input is
range is Full 110V AC(USA
range(or 220V type)
AC)
17
Uh3 200P4
Go to cover page
Safety Test Requirements
2.2.1 The test with AC voltage is only for production purpose,
2.2.2 The minimum test duration for Quality Control Inspector
must be 1 minute. No breakdown during the test.
2.2.3 The test voltage must be maintained within the specified
voltage + 5%.
2.2.4 The grounding blade or pin of mains plug must be
conducted with accessible metal parts.
Service center shall use DC voltage.
3. Equipments and Connection
4. Recording
3.1. Equipments
For example :
- ChenHwa 9032 PROGRAMMABLE AUTO SAFETY
TESTER
- ChenHwa 510B Digital Grounding Continuity Tester
- ChenHwa 901 (AC Hi-pot test), 902 (AC, DC Hi-pot test)
Withstanding Tester
3.2. Connection
Hipot and Ground Continuity testing records have to be kept for
a period of 10 years.
* Turn on the power switch of monitor before Hipot and
Ground Continuity testing.
Connect the "video cable"
or "grounding screw"
to the CLIP on your tester.
Video cable
(Rear view of monitor)
Connect the power cord
to the monitor.
Grounding screw
Power outlet
(ChenHwa 9032 tester)
Clip
Clip
http://www.wjel.net

DDC Data Re-programming
Additional information
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-programmed.
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.
DDC EDID structure
For Analog interface: Standard Version 3.0
Structure Version 1.2
For Digital inferface: Standard Version 3.0
Structure Version 1.3
1. An i486 (or above) personal computer or compatible.
2. Microsoft operation system Windows 95/98.
4. A/D Alignment kits (3138 106 10079):
inclusion : a. Alignment box x1 (as Fig. 1)
b. Printer cable x1
c. (D-Sub) to (D-Sub) cable x1
Note: The EDID303.EXE is a windows-based program, which
cannot be run in MS-DOS.
System and equipment requirements
3. EDID303.EXE program
18 Uh3 200p4
Go to cover page
DDC Instructions
General
Pin assignment
1
10
6
11 15
5
Assignment Assignment
Pin No. Pin No.
Ground
No Connected
Ground
Blue video input
2
7
6
8
4
5
3
19
12
11
14
13
15
10
Red video ground
Blue video ground
Green video ground
+5V
Ground
Data clock line(SCL)
V.Sync(VCLK for DDC)
H.Sync
Serial data line(SDA)
Green video input
Red video input
A. 15-pin D-Sub Connector
Note: The alignment box has already build-in a batteries socket for
using batteries (9V) as power source. Pull out the socket by
remove four screws at the rear of box. Please do not forget that
remove batteries after programming. The energy of batteries can
only drive circuits for a short period of time.
To Monitor
DC 8V~12V
Video Card
Video Card
To Printer
Power
indicator
A/D Alignment Kits - Analog connectionA/D Alignment Kits - Analog connection
Fig. 1Fig. 1
B. DVI-D Connector
16
24
8
1
9
17
Pin No. Assignment Pin No. Assignment
1 TMDS Data 2- 13 TMDS Data 3+
2 TMDS Data 2+ 14 +5V Power
3 TMDS Data 2/4 Shield 15 Ground (+5V)
4 TMDS Data 4- 16 Hot Plug Detect
5 TMDS Data 4+ 17 TMDS Data 0-
6 DDC Clock 18 TMDS Data 0+
7 DDC Data 19 TMDS Data 0/5 Shield
8 No connect 20 TMDS Data 5-
9 TMDS Data 1- 21 TMDS Data 5+
10 TMDS Data 1+ 22 TMDS Clock Shield
11 TMDS Data 1/3 Shield 23 TMDS Clock+
12 TMDS Data 3- 24 TMDS Clock-
To Monitor
(Digital port)
DC 8V~12V
Power
indicator
To Printer
A/D Alignment Kits - Digital connectionA/D Alignment Kits - Digital connection
http://www.wjel.net

19
Uh3 200p4
Go to cover page
DDC Instructions
1. Configuration and procedure
There are three ICs contained serial number on the circuit board,
analog EDID IC, digital EDID IC and main EEPROM which
storage all factory settings. Following descriptions are the
connection and procedure for analog EDID IC and digital EDID
IC, the main EEPROM can be re-programmed along with
analog EDID IC by enabling factory memory data write function
on the DDC program (EDID303.EXE).
Initialize alignment box
In order to avoid that monitor entering power saving mode due to
sync will cut off by alignment box, it is necessary to initialize
alignment box before running programming software ( EDID303.
EXE ). Following steps show you the procedures and connection.
Step 1: Supply 8~12V DC power source to the Alignment box by
plugging a DC power cord or using batteries.
Step 2: Connecting printer cable and video cable of monitor as Fig. 1
Step 3: Run the EDID301.EXE program until the main menu appears.
This is for initialize alignment box.
Re-programming DDC IC
Step 1: After initialize alignment box, connecting all cables and box as
Fig. 2 for analog DDC, Fig.3 for digital DDC
Step 2: Press and hold "Auto" and "Left" keys at the same time and DC
power off/on to enter factor mode as Fig 4.
Step 2: Follow the steps on DDC re-programming instructions to staring
re-programming.
~
~
PC
To printer port (LTP1)
DC Power
8~12 V
Fig. 1
Printer
Port
D-sub video cable
To
Monitor
To PC
Rear view of 200P4
~
~
PC
To video card
To printer port (LTP1)
DC Power
8~12 V
Fig. 3
Printer
Port
To
Monitor
To PC
DVI to D-sub cable
~
~
PC
To video card
To printer port (LTP1)
DC Power
8~12 V
Fig. 2
Printer
Port
To
Monitor
To PC
D-sub video cable
DVI
D-sub
D-sub video cable
Fig 4
How to enter factory mode?
1. Hold "Auto" and "Left" keys at the same time.
2. DC power switch off
3. DC power switch on
4. Press "Menu" key to check the status
Rear view of 200P4
Rear view of 200P4
http://www.wjel.net

20 Uh3 200p4
Go to cover page
DDC Instructions
6. Click icon to read DDC EDID data from monitor. The EDID
codes will display on screen as following. (The EDID codes are
depend on the model.) Meanwhile, The status bar will indicate
00% to 100% when reading.
Fig. 6
7. Activate OSD on product information item to check serial number
as Fig. 7..
Fig.7
Fig. 8
Note:
During the loading, EDID303 will verify the EDID data which just
loaded from monitor before proceed any further function, once the
data structure of EDID can not be recognized, the following error
message will appear on the screen (Fig. 8). Please confirm
following steps to avoid this message.
1. The data structure of EDID was incorrect.
2. DDC IC that you are trying to load data is empty.
3. Wrong communication channel has set at configuration setup
Windows.
4. Cables loosed or poor contact of connection.
2. DDC re-programming instructions
Loading DDC data from monitor
1. Click icon on the tools bar to bring up the Configuration
Setup windows as Fig.5
2. Select the DDC2B as the communication channel.
3. Enable Factory memory data write function and fill in page address
F0 to the block.
5. Click button to confirm your selection.
Note: The Factory memory data write function will allow EDID303 to
rewrite serial numbers on analog EDID IC, digital EDID IC and
main EEPROM to make sure all S/N are exactly the same. You
may confirm the function by checking the S/N at Product
information on the OSD menu after restarting the monitor.
Fig. 5
http://www.wjel.net