Philips 140S LCD User manual

Important Safety Notice ...................2
Technical Data...........................3
AccessoriesandFrontView................4
Installation ..............................5
OSD Adjustment .........................6
OSD attention signals.....................7
Troubleshootings ........................8
Clock & Phase Adjustments................9
Failure Mode of LCD panel.................10
Definition of pixel defects..................11
Flat Panel Adjust (FP Adjust)...............12
Mechanical Instructions ..................14~15
Safety Test Requirements .................16
Hex Data of DDC 1/2B .................... 31
Wiring Diagram ..........................13
Electrical Instructions.....................17~18
Fatory Adjustment........................ 19
Colour Adjustment. ....................... 20~26
DDC Instructions......................... 27~30
Block Diagram ........................... 32
Power & Video in Schematic Diagram
Control Panel C.B.A .....................33
SOG & OSD Schematic Diagram............35
RGB Digitzer Schematic Diagram...........36
CPU Schematic Diagram ..................34
GMZ1 Schematic Diagram.................37
DC-DC Converter Schematic Diagram .......38
Main PWB ( C.B.A) .......................39
Main PWB (Mapping) .....................40
Repair Tips..............................41
Exploded View...........................42
Recommended Part List...................43
Spare Part List ..........................44~47
Repair Flow Chart ........................48~50
General Product Specification..............51~66
Inverter schematic Diagram................67
Inverter Panel (C.B.A).....................68
PartsList................................69
LCD Panel...............................70
Description Description
Page Page
Table of Contents
CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.
SAFETY NOTICE
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.
14" LCD Colour Monitor
DDC/Power saving /TCO
User-friendliness Control 140S1M/00
140S LCD
Horizontal frequencies
30 - 61kHz
Service
Service
Service
Published by BU Monitors Printed in Taiwan Copyright reserved Subject to modification Mayl 15 2000
©GB 3138 106 10102
REFER TO BACK COVER FOR IMPORTANT SAFETY GUIDELINES

Important Safety Notice
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 also is
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
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.
2140S LCD
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140S LCD 3
LCD Panel
Type : TFT LCD
Screen size : 14.1" visual
Pixel pitch : 0.279 x 0.279 mm
LCD Panel type : 1024 x 768 pixels
R.G.B. vertical stripe
Anti-glare prolarizer hardness
Effective viewing area : 285.7 x 214.3 mm
Display Colors : 6-bit interface
Video
Video dot rate : 80 MHz
Input impedance
- Video : 75 ohms
- Sync : 2K ohms
Input signal levels : 700m Vpp
Sync input signal : Separate sync
Composite sync
Sync polarities : Positive and negative
Input Frequency
XGA Hsync : 48-60 KHz, Vsync 60-75 Hz (N.I.)
SVGA Hsync : 35-50 KHz, Vsync 56-75 Hz (N.I.)
VGA Hsync : 31-58 Khz, Vsync 60-75 Hz (N.I.)
Video Interface : Analog (D-Sub)
Optical Characteristics
Contrast ratio : 200 (typ.)
Brightness : 200 nits (typ.)
Peak contrast angle : 6 o'clock
White Chromacity
x=0.281 y=0.311 (at 9300 K)
x=0.312 y=0.338 (at 6500 K)
Technical Specifications
Pin Assignment
Technical Data
1 Red video input
2 Green video input
3 Blue video input
4 Identical output - connected to pin 10
5
6 Red video ground
7
8 Blue video ground
9 No pin
10 Logic ground
11 Identical output - connected to pin 10
12 Serial data line (SDA)
13 H.Sync/H+V
14 V. Sync (VCLK for DDC)
15 Data clock line (SCL)
Pin No. Assignment
Self test
Green video ground
Viewing Angle (C/R>10) : Upper 15 (typ.)
Lower 35 (typ.)
Left 45 (typ.)
Right 45 (typ.)
Response time : 50ms (typ.)
Physical Specifications
Dimension (WxHxD) :361x343x165mm(incl. Pedestal)
Weight : 4.2 Kg
Power supply : 100 - 240 VAC, 50/60 Hz
Power consumption : 23 W
Temperature (operating) : 0 C to 35 C
Relative humidity : 20% to 80%
System MTBF : 50K hrs (excluding LCD panel,
CCFL) CCFL 50 Khrs (Panel
dependant)
³°
³°
³°
³°
£
°°
1
10
6
11 15
5
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Preset Display Modes
Display Mode H. Freq. V. Freq. Dot rate Resolution
(KHz) (KHz) (MHz)
IBM VGA 10h 31.469 70.086 25.175 640 x 350
31.469 70.087 28.322 720 x 400
31.469 59.940 25.175 640
Macintosh 35.000 67.000 30.200 640
VESA 37.861 72.809 31.500 640
VESA 37.500 75.000 31.500
VESA 35.156 56.250 36.000 800
VESA 37.879 60.317 40.000 80
VESA 48.077 72.188 50.000 80
VESA 46.875 75.000 49.500
Macintosh 49.700 75.000 57.300 832
VESA 48.363 60.004 65.000 1
VESA 56.476 70.069 75.000 1024
VESA 60.023 75.029 78.750 1024
IBM VGA 3h
IBM VGA 12h x 480
x 480
x 480
640 x 480
x 600
0 x 600
0 x 600
800 x 600
x 624
024 x 768
x 768
x 768
Automatic Power Saving
If you have VESA's DPMS compliance display card or software installed
in your PC, the monitor can automatically reduce its power consumption
when not in use. And if an input from a keyboard, mouse or other input
device is detected, the monitor will automatically "wake up". The
following table shows the power consumption and signaling of this
automatic power saving feature:
This monitor is ENERGY STAR -compliant. As an ENERGY STAR
Partner, PHILIPS has determined that this product meets the ENERGY
STAR guidelines for energy efficiency.
ÒÒ
Ò
Power Management Definition
VESA's Video H-sync V-sync Power Used LED
Mode color
ON Active Yes Yes <23W Green
Stand-by Blanked No Yes <3W Amber
Suspend Blanked Yes No <3W Amber
Active-OFF* Blanked No No <3W Amber
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4
140S LCD
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Accessories and Front View
Accessory Pack Front View
Correct Handling of the Monitor
1. Power Cable (socket may differ for
different countries)
1. When handling the monitor, grip the bottom firmly with both hands
and ensure that the front panel faces outward before lifting. Please
refer to the diagram on the right.
2. Handling the monitor with care prevents scratching and damage. If
the monitor becomes damaged, immediately disconnect the power
from the unit and have it checked by a qualified service person before
using it again.
3. To prevent fire or electrical shock, do not drop the monitor.
4. when moving the monitor, be sure to unplug all power cords in order
to avoid injury or damage to the equipment.
2. Macintosh Adapter (optional)
3. E-DFU package with Quick Setup Guide,
Using Your Monitor Manual, and CD-
ROM.
4. AC /DC Adaptor
UP and DOWN buttons are used when adjusting the
OSD of your monitor
LEFT and RIGHT buttons, like the UP and DOWN
buttons, are also used in adjusting the OSD of your
monitor.
BRIGHTNESS hotkey. When the UP and DOWN arrow
buttons are pressed, the adjustment controls for the
BRIGHTNESS will show up.
OK button which when pressed will take you to the OSD
controls
POWER button switches your monitor on
Automatically adjust the horizontal position, vertical
position, phase and clock setting.

5
140S LCD
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Installation
Please follow the steps below to connect your LCD Monitor to PC.
1. To remove the back cover, simple press the 2 clips on its underside,
then pull out and down.
Note: If you use an Apple Macintosh , you need to connect the special
Mac adapter to one end of the monitor signal cable.
ä
2. Remove the plastic ring from the hinge.
5. Replace the back cover on the monitor.
6. Connect to your PC.
6.1 Turn off your computer and unplug its power cable.
6.2 Connect the monitor signal cable to the video connector on the back
of your computer.
6.3 Plug the power cord of your computer and your monitor into a
nearby outlet.
6.4 Turn on your computer and monitor. If the monitor displays an
image, installation is complete.
3. Plug in DC power cable into the DC connector.
4. Cover the cables with the plastic ring and put the ring back on the
hinge.

6
140S LCD
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OSD Adjustment
The OSD Tree
On the front controls of your monitor, once you press the button,
the OSD Main Controls window will pop up and you can now start
making adjustment to your monitor's various features. Use the or
the keys to make your adjustments within.
Brightness
1. Press the or button on the monitor. The BRIGHTNESS
window appears.
2. Press the button to adjust the brightness.
3. When the brightness is adjusted to the level desired, stop pressing
the or button and after three seconds the BRIGHTNESS
window will disappear with the new adjustment saved.
Below is an overall view of the structure of the OSD. You can use this as
reference when you want to later on work your way around the different
adjustments.

7
140S LCD
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OSD Attention Signals
The monitor will detect various display situation automatically. When the
monitor detects the problems, the screen will show the different warning
signals to remind you what is happen to your monitor.
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.
NO VIDEO INPUT
After 30
minutes the attention signal of Entering Sleep Mode will replace it
automatically.
WAIT FOR AUTOMATIC ADJUSTMENT
This screen appears when you touch the button. It will disappear
when the monitor is properly adjusted.
CANNOT DISPLAY THIS VIDEO MODE
This screen warns when the input frequency from the computer is not a
standard video mode or out of the monitor's scanning range. Please
change the display mode of the operating software in the computer (i.e.
Windows) to 1024 x768 @ 60Hz for best display performance.
ENTERING SLEEP MODE
This screen appears when the monitor is about to enter the sleep mode.
Please press any key on the keyboard or click the mouse to wake up
the monitor and computer.
Locked OSD function can be released by pressing button for
more than 10 seconds. While press button for OSD unlocked
purpose, the screen will keep showing "OSD MAIN MENU LOCKED "
until OSD function unlocked and screen automatically shows
following window for 3 seconds.
Switch ON/OFF attention signals
All attention signals can be switched off by keep pressing button
for more than 10 seconds if there is no video signal supplied.
To Lock/Unlock OSD function
The OSD function can be locked by pressing button for more than
10 seconds, the screen shows following windows for 3 seconds.
Everytime when you press or button, this message appears
on the screen automatically. The & (brightness) , &
(mute) hotkey are still functional for brightness and mute expectively
SERVICE MODE
SERIAL NO.: TY 123456
HOURS OF OPERATION: 000103
Recover attention signals by pressing button for more than 10
seconds without video signal input.
Access Service Mode
Operating monitor with no signals (power saving mode), keep
pressing button for more than 10 seconds. Following information
will appear on the screen. Leave service mode by either re-feed
video signal or simply turn off and on the power of monitor.
1024 x 768

8
140S LCD
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Troubleshooting
Having this problem? Having this problem?
No Picture
(Power LED not lit)
No Picture
(Power LED is amber or yellow)
Screen says
AUTO button not working properly
Display position is incorrect
Image vibrates on the screen
Vertical flicker appears
Horizontal flicker appears
The screen is too bright or too dark
An after-image appears
An after-image remains after the power
has been turned off.
Green, red, blue, dark, and white dots
remains
- Make sure the Power cable is
plugged to the wall and back
of the monitor.
- Make sure the AC/DC
Adaptor has been attached to
the DC Jack.
- First, power button in front of
the monitor should be in the
OFF position, then press it to
ON position again.
- 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.
- Make sure the monitor cable
is properly connected to your
computer.
- Check to see if the monitor
cable has bent pins.
- Make sure the computer is
turned on.
- The Auto Function is
designed for use on standard
Macintosh or IBM-compatible
PC running Microsoft
properly Windows.
- It may not work properly if
using non-standard PCs or
video card.
- Push the AUTO button.
- Adjust the image position
using the Adjust Position in
OSD.
- Check that the signal cable
is properly connected to the
graphics board or PC.
- Push the AUTO button
- Eliminate the vertical bars
using the Clock Adjustment
in the Video Noise item
- Push the AUTO button
- Eliminate the horizontal bars
using the Phase Adjustment
in the Video Noise item
- Adjust the contrast and
brightness using the OSD.
(The backlight of the LCD
monitor has a fixed life span.
When the screen becomes
dark or begins to flicker,
please contact your dealer.)
- 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.
- 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 set amount
of time.
- The remaining dots are
normal characteristic of the
liquid crystal used in today's
technology.
Check these items Check these items
Common Problems Imaging Problems

9
140S LCD
Clock & Phase Adjustments
Clock & Phase Adjustments
Step 1 : Click on the Start button (Win95, Win98 or Win NT) and
select " Shut Down...".
Step 2 : The "Shut Down Windows" appears.
Step 6: When the PHASE is adjusted to the level desired, press the
to select CLOCK.
After pressing AUTO button, you may need to fine tune CLOCK and
PHASE adjustment to completely eliminate the vertical and horizontal
bars caused by different video signal input from the video card of PC.
AUTO Button
AUTO Button
CLOCK phenomenon PHASE phenomenon
To fine tune CLOCK and PHASE adjustment by using OSD with
Microsoft "Shut Down Windows", follow these steps:
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Press this button for a better video display. CLOCK, PHASE, Vertical
position, and Horizontal position are adjusted automatically.
Step 3 : With the Shut Down Window still up on the screen , press the
button to bring up OSD Main Control menu.
Step 4: Press the button to move the selection bar down until
VIDEO NOISE is highlighted.
Step 7: Press the or button to adjust the CLOCK.
Step 8: Press the button to return to Main Control windows.
Step 9: Save the settings and exit OSD.
Step 5: Press the button. The VIDEO NOISE window appears.
PHASE will be highlighted. Press or button to
eliminated the vertical bars.
Before
After
VIDEO NOISE
BACK TO MAIN MENU
50
50
PHASE
CLOCK
PRESS AUTO BUTTON FIRST,
IF NO IMPROVEMENT, RETURN TO
ADJUST PHASE AND CLOCK.
Before
After
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10 140S LCD Failure Mode of LCD panel
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.
Failure description Phenomenon
Vertical dim lines
Vertical block defect
Vertical lines defect
(Always bright or dark)
Horizontal block defect
Horizontal dim lines block
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
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11
140S LCD
Definition of Pixel Defects
140S/150B 151AX & 150P
10 or fewer
3orfewer
None
12 mm or more
6orfewer
10 or fewer
1 lit subpixel
2 adjacent lit subpixels
3 adjacent lit subpixels (1 white pixel)
Distance between two bright dot
defects*
* 1 or 2 adjacent subpixel defects = 1 dot defect
Bright dot defects within 20 mm circle
Total bright dot defects of all types
6orfewe
r
2orfewe
r
None
14 mm or more
4orfewe
r
6orfewe
r
ACCEPTABLE LEVEL
BRIGHT DOT DEFECTS
MODEL
140S/150B 151AX & 150P
10 or fewer
3orfewer
None
12 mm or more
6orfewer
10 or fewer
1 dark subpixel
2 adjacent dark subpixels
3 adjacent dark subpixels
Distance between two black dot
defects
Black dot defects within 20 mm circle
Total black dot defects of all types
6orfewer
1orfewer
None
4mmormore
4orfewer
6orfewer
ACCEPTABLE LEVEL
BLA CK DOT DEFECTS
MODEL
140S/150B
MODEL 151AX & 150P 181AS
12 or fewer
Total bright or black dot defects of
all types 10 or fewer
181AS
10 or fewer
3orfewer
None
14 mm or more
4orfewer
10 or fewer
181AS
10 or fewer
2orfewer
1orfewer
14 mm or more
5orfewer
15 or fewer
15 or fewer
ACCEPTABLE LEVEL
TOTAL DOT DEFECTS
.
e. ,
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.
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.
R G
B
R G
B
R
G
B
P
W
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”. These are the types of black dot defects:
One dark subpixel
Two or three adjacent dark subpixels
YC
Pixel
Subpixel
Subpixel Subpixel Subpixel
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12 140S LCD Flat Panel Adjust (FP Adjust)
Fpadjust program
The Flat Panel Adjust (FPadjust) software helps you to find the best
setting for your Philips LCD monitor. It allows you to adjust the image
performance of LCD monitor, such as RESOLUTION,
AUTO ADJUSTMENT, POSITION, CONTRAST, VIDEO CLOCK and
VIDEO PHASE.
Note: Video clock and phase functions are only available for analog
video signals.
Install and Run FPadjust
In "MS Windows 95/98" environment : For example
1. Insert CD-DFU(3138 117 01951) to your CD-ROM driver.
2. Run "E:\PC\FPADJUST\SETUP.EXE" as Fig. 1. (Replace E by the
letter of your CD-ROM driver)
3. Then follow the instructions to install the FPadjust program.
When finish, double click FPadjust icon " ", then the
description (can be moved by mouse) and background pattern
come on the screen for image adjustment.
FPadjust program is working as a pattern generator to provide the
pattern display on the screen for the adjustment of CONTRAST,
CLOCK, PHASE ...etc. Please follow the steps below to adjust your
PHILIPS Flat Panel Monitor for best display quality.
FPadj ust.lnk
Fig. 1
E:\PC\FPADJUST\SETUP.EXE
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13
140S LCD
Wiring Diagram
DC CONNECTDC CONNECT
INTERFACE CABLE/TO COMPUTERINTERFACE CABLE/TO COMPUTER
CONTROL BOARDCONTROL BOARD
LCD PANELLCD PANEL
INVERTER BOARDINVERTER BOARD
1701
2381
1001
1004 2802
1901
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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.
16 140S LCD
All units that are returned for service or repair must pass the
original manufactures safety tests. Safety testing requires both
and testing.Hi-pot 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)
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
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66 140S LCD LCD Panel
Cable connector A
Cable connector B
Polarizer (Lower)
Polarizer (Upper)
CCFT
(Upper)
Gate drive
pcb assy
Tab IC,
Gate drive
Tab IC,
Source drive
Pcb assy,
Source drive
Control pcb assy
CCFT
(Lower)
Chi Mei 14 inches LCD panel
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19
140S LCD
Factory Adjustment
FACTORY V1.01 1999-11-17FACTORY V1.01 1999-11-17
AUTO SUBAUTO SUB
9300K R G B9300K R G B
6500K R G B6500K R G B
OFFSET R G BOFFSET R G B
SUB CONSUB CON
--
OK
Use or buttons to select SUB-CON, 9300K R G B,..etc.
Use or buttons to decrease/increase the value of each item
: adjust Sub-brightness & Sub-contrast automatically.
AUTO
AUTO
FACTORY V1.01 1999-11-17FACTORY V1.01 1999-11-17
AUTO SUBAUTO SUB
9300K R G B9300K R G B
6500K R G B6500K R G B
OFFSET R G BOFFSET R G B
SUB CONSUB CON
--
OK 166
20 20
22
149
233
205
255
255
255
Contrast adjustment (Sub-Contrast). Use this menu item to
adjust the contrast gain of pre-amp ranges from 0 to 255.
9300KRGB
6500KRGB
Color temperature gain adjustment. Use these menu items to
adjust the RGB gains of pre-amp for different color
temperatures, ranges from 0 to 255.
OFFSET R G B
Sub-Brightness adjustment. Use this menu item to adjust
the brightness level (DC-level) of pre-amp range from 0 to
255.
Factory Mode Adjustment
Entering Factory Adjustment Menu
-Turn off monitor(do'nt turn off PC)
- Push & and " " buttons simultaneously on the front
control panel ,then press button to bring up OSD menu of factory
mode as shown below.
FACTORY V0.11 1999-10-22
Use button to select factory adjustment indication (for example:
FACTORY V1.01 1999-11-17), which is the entrance of the factory
adjustment menu, press button to access it. The window shows
as below.
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31
140S LCD
DDC data of Analog
The Display Data Channel (DDC) 1/2B for LG LCD panel Analog
Vendor/Product Identification
ID Manufacturer Name : PHL
ID Product Code : 140C (HEX.)
ID Serial Number : 1E240 (HEX.)
Week of Manufacture : 15
Year of Manufacture : 2000
EDID Version, Revision
Version : 1
Revision : 1
Basic Display Parameters/Features
Video Input Definition : Analog Video Input
0.700V/0.300V (1.00Vpp)
without Blank-to-Black Setup
Separate Sync
Composite Sync
Sync on Green
no Serration required
Maximum H Image Size : 29
Maximum V Image Size : 22
Display Transfer Characteristic : 2.2
(gamma)
Feature Support (DPMS) : Standby
Suspend
Active Off
Display Type : RGB color display
Color Characteristics
Red X coordinate : 0.557
Red Y coordinate : 0.329
Green X coordinate : 0.296
Green Y coordinate : 0.582
Blue X coordinate : 0.156
Blue Y coordinate : 0.132
White X coordinate : 0.281
White Y coordinate : 0.311
Established Timings
Established Timings I : 720 x 400@70Hz(IBM,VGA)
640 x 480 @60Hz(IBM,VGA)
640 x 480 @67Hz(Apple, Mac II)
640 x 480 @72Hz (VESA)
640 x 480 @75Hz (VESA)
800 x 600 @56Hz (VESA)
800 x 600 @60Hz (VESA)
Established Timings II : 800 x 600 @72Hz (VESA)
800 x 600 @75Hz (VESA)
832 x 624 @ 75Hz(Apple, Mac II)
1024 x 768 @60Hz (VESA)
1024 x 768 @70Hz (VESA)
1024 x 768 @75Hz (VESA)
Detailed Timing #1
Pixel Clock (MHz) : 25.18
H Active (pixels) : 640
H Blanking (pixels) : 160
V Active (lines) : 350
V Blanking (lines) : 99
H Sync Offset (F Porch) (pixels): 16
H Sync Pulse Width (pixels) : 96
V Sync Offset (F Porch) (lines) : 37
V Sync Pulse Width (lines) : 2
H Image Size (mm) : 306
V Image Size (mm) : 230
H Border (pixels) : 0
V Border (lines) : 0
Flags : Non-interlaced
: Normal Display, No stereo
: Digital Separate sync.
: Negative Vertical Sync.
: Negative Horizontal Sync.
Monitor Descriptor #2
Serial Number : TY 123456
Monitor Descriptor #3
Monitor Name : PHILIPS 140S
Monitor Descriptor #4
Monitor Range Limits
Min. Vt rate Hz : 56
Max. Vt rate Hz : 75
Min. Horiz. rate kHz : 30
Max. Horiz. rate kHz : 61
Max. Supported Pixel : 80
Extension Flag : 0
Check sum : f2 (HEX.)
**********************************************************************
EDID data (128 bytes)
**********************************************************************
0: 00 1: ff 2: ff 3: ff 4: ff 5: ff 6: ff 7: 00
8: 41 9: 0c 10: 0c 11: 14 12: 40 13: e2 14: 01 15: 00
16: 0f 17: 0a 18: 01 19: 01 20: 6e 21: 1d 22: 16 23: 78
24: e8 25:9c 26: 32 27: 8e 28: 54 29: 4b 30: 95 31: 28
32: 21 33: 48 34: 4f 35: bf 36: ee 37: 00 38: 01 39: 01
40: 01 41: 01 42: 01 43: 01 44: 01 45: 01 46: 01 47: 01
48: 01 49: 01 50: 01 51: 01 52: 01 53: 01 54: d6 55: 09
56: 80 57: a0 58: 20 59: 5e 60: 63 61: 10 62: 10 63: 60
64: 52 65: 08 66: 32 67: e6 68: 10 69: 00 70: 00 71: 1a
72: 00 73: 00 74: 00 75: ff 76: 00 77: 20 78: 54 79: 59
80: 20 81: 20 82: 31 83: 32 84: 33 85: 34 86: 35 87: 36
88: 0a 89: 20 90: 00 91: 00 92: 00 93: fc 94: 00 95: 50
96: 48 97: 49 98: 4c 99: 49 100: 50 101: 53 102: 20 103: 31
104: 34 105: 30 106: 53 107: 0a 108: 00 109: 00 110: 00 111: fd
112: 00 113: 38 114: 4b 115: 1e 116: 3d 117: 08 118: 00 119: 0a
120: 20 121: 20 122: 20 123: 20 124: 20 125: 20 126: 00 127: f2
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181AS LCD
93
32 140S LCD Block diagram
D/D
Converter
3.3V
5V
Contro
l panel
Flying VGA
cable
Inverter
Interfac
e
Inverter
Panel
DC-DC
conveter
Main Board
+18V
In
Back
light
X2
D/D
Converter
3.3V
5V
Contro
l panel
Flying VGA
cable
Inverter
Interfac
e
Inverter
Panel
DC-DC
conveter
Main Board
+18V
In
Back
light
X2
9Go to cover page
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POWER and VIDEO IN Schematic Diagram Control Panel C.B.A 33
104S LCD
6812
BAS32L
1
trace and its CAP must close to IC pin as possible
3843
150R
DDCSDA
5801
BEAD/1206
1 2
HS
+5VD
1
BIN
2821
10N/0805
12
VIN
7802
24LC21/SO8
1
2
3
45
6
7
8NC
NC
NC
GNDSDA
SCL
VCLK
VCC
1
4.place copper under crystal and
3806
150R
oscillator,
GIN
5802
BEAD/1206
12
2811
10N/0805
12
VIN
140mil
3804
2K2/0805
140mil
VS
3822
10K/0805
1 2
DDCSCL
DDCSDA
+5V
+5V
+5V
BIN
JUIFANG-62633-13H
1801
1
2
3
4
5
6
7
8
9
10
11
12
13
1
+5V_PWR_CTL
DDCSCL
GIN
3823
100R
PANEL_PWR_CTL
H
ON
1
+5V
+5V
+3.3V
7811
BC858
1
23
1803
HEAD-2.54-3X1
1
2
3
2801
100N/0805
1 2
1
2.bypass CAP and BEAD must close to the pin
HIN
12
6801
BAS32L
+5V_PWR_CTL
1
VIN
RIN
1
3.VCC traces use 20 mil if not specified
NI
2806
100P/0805
1 2
6803
BAV99
21
3
4
123
5678
7812
SI9433DY
3808
100R/0805
1 2
7821
BC858
1
23
6804
BAV99
21
3
1
HIN
3805
2K2/0805
3812
10K/0805
1 2
5.clock width about 10 mil, as short as possible
2820
100n
HIN DDC5V
GIN
3813
150R
3810
100R
1 2
1
4
123
5678
7822
SI9433DY
3807
100R/0805
1 2
140mil
6810
BZX84C5V6
1
2803
220P/0805
12
3821
10K/0805
1 2
6806
BAV99
21
3
3811
10K/0805
1 2
3844
47R
1.use power trace,but not power plane except specified
L+5V
DDCSDA
1
VIN
RIN HIN
BIN
2805
220p
keep >30mil gap with other trace
140mil
6808
BAV99
21
3
2802
100P/0805
12
POWER IN & VIDEO IN 0316A
POTOMAC-1.SCH
C
16Thursday, March 16, 2000
Size Document Number Rev
Date: Sheet of
6.add 4 mm copper ring on solder side
140mil
BIN
1
RIN
6811
BAS32L
140mil
OFF
6807
BAV99
21
3
1
DDCSCLRIN
+3.3V
2810
100N/0805
12
GIN
3809
100R/0805
1 2
1
NI
1
6802
BAV99
21
3
+5VD
DDC5V
6805
BAV99
21
3
+5VL
+3.3V_GMZ2
SELF-TEST
2807
100P/0805
1 2
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CPU Schematic Diagram
34 104S LCD
3344
4K7/ARV241
1 8 2 7 3 6 4 5
IICSDA
+5V
2366 1N/0805
80mil
+18V
HS-380
AUDIO_PWR_CTL
3362
100R/ARV241
1 8
2 7
3 6
4 5
5374 BLM21B221SB
3347 4K7/ARV241
18
27
36
45
NI
ADPWRDWN
6341
BAS32L
VS-380
O«×C 30K
3306
1K/0805
THERMO
5373 BLM21B221SB
IICSDA
NI
1
KEY
2345
22P/0805
12
1
2383 100N/0805
5369 BLM21B221SB
NI
+5V
HS-380
CP-380
1302
LEOCO-2011P04H
1
2
3
4
20mil
NI
3305
1K/0805
1
3304
100R/0805
3301
100R/0805
THERMO
1341
12MHz
2362
15P/0805
12
7362
ST24C16/DIP
1
2
3
45
6
7
8PRE
E1
E2
VSSSDA
SCL
/WC
VCC
3349 0R/0805
12
FRC_CTL
5367
TI3211611G800
NI
+5V
3313
15K/0805
12
3338
4K7/0805
1
1301
LEOCO-2011P07H
1
2
3
4
5
6
7
BACKLIGHT_CTL
2342
1U/0805
12
GMZ2/OSD_RST
LED_G
3315
DTC-103
1
2
NI
+5V
NI
2372 1N/0805
5370 BLM21B221SB
NI
+5V
+5V
EEPROM_WP
+5V
3314
C620/10K/0805
NI
12
+5V
NI
LED_G
3369220R/0805
+5V VS-380
1
HS_IN
CSYNC
3302
10K/0805
DDCSCL
VOLUME
VOLUME
routed by side of DC power for EMI isolation,
CP-380
1.trace from 7301 to 1301,
3361
2K2/ARV241
18
27
36
45
EEPROM_WP
1
EEPROM_WP
AUDI O_P WR_CTL
/DOE
2381 100N/0805
2344
22P/0805
12
CPU 0316A
POTOMAC-2.SCH
Custom
26Thursday, March 16, 2000
Size Document Number Rev
Date: Sheet of
+5V
+5V
+2343
10U/16V/RV2
7301
87C380
1
2
3
4
5
6
7
8
9
10
13
14
15
16
17
18
19
20
21
11
12
25
24
23
22
26
27
28
29
30
31
33
34
35
36
37
38
39
40
41
42
32
P2.7
P2.6
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
XTAL1
XTAL2
HIN
HOUT
CSYNC
VIN
VOUT
P0.7
P0.6
P0.5
P0.4
VDD
VSS
P0.0
P0.1
P0.2
P0.3
RESET
DAC0
DAC1
DAC2
DAC3
VSS
P3.2
P3.3
/INT1
SDA1/P1.3
SCL1/P1.2
SDA/P1.1
SCL/P1.0
PWM10/P1.7
PWM9/PAOUT/P3.1
PWM8/CLAMP/P3.0
VDD
80mil
NI
IICSCL
SCLK
SDI
LED_R
2380 1N/0805
+5V
AUDIO_PWR
3366
4K7/0805
2363
100N/0805
12
3365
100R/0805
2379 100N/0805
3367
4K7/ARV241
1 8 2 7 3 6 4 5
20mil
1
BRIGHT_CTL
3364 100R/0805
3368220R/0805
1
1
2361
1U/0805
12
+5V_PWR_CTL
3303
100R/0805
NI
HS
3370
100R
2313
100N/0805
12
2375 100N/08052374 1N/0805
NI
5372 BLM21B221SB
IICSCL
5366 TI3211611G800
2367 100N/0805
NI
PANEL_PWR_CTL
AUDIO_PWR_CTL
2378 1N/0805
SDO
5361
BEAD/1206
1 2
1
2382 1N/0805
3341
10K/0805
12
LED_R
18V_ON
+5V
FRC_CTL
3363
4K7/0805
NI
VS_IN
DDCSDA
/SCS
2369 100N/0805
NI
SELF-TEST
2368 1N/0805
2373 100N/0805
3339
4K7/0805
3346 100R/0805
12
1
VS
HS_IN
NI
KEY
20mil
20mil
VS_IN2255
100P/0805
5342
BEAD/1206 12
NI
5
4
2
3
1
0.5v
2.2v
2.4v
2.9v
3.9
2.1v
4.9v
0.2 V/div AC
5 uS/div
0.1 V/div AC
5 uS/div
0.2 V/div AC
5 uS/div
0.2 V/div AC
50nS/div
0.2 V/div AC
5 mS/div
1 7301-13
2 7301-15
3 7301-16
4 7301-9
5 7301-42
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