Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Monitor Samsung_LNT3242H_LNT4042H_LNT4642H_Reference Information_[SM]
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14 Reference Infomation
14 Reference Infomation
14-1 Technical Terms
- TFT-LCD - Image Lock
(Thin film Transistor Liquid Crystal Display) This means "Fineness adjustment" in LCD
ADC(Analog to Digital Converter) Monitor, the features are "Fine" and "Coarse".
This is a circuit that converts from analog signal to
digital signals.
- FINE
"Fine" adjustment is used to adjust visibility by
- PLL(Phase Locked Loop) control phase difference.
During progressing ADC, Device makes clock
synchronizing HSYNC with Video clock
- COARSE
This is a adjustment by tuning with Video colck
- Inverter and PLL clock.
Device that supply Power to LCD panel lamp.
this device gernerate about 1,500~2,000V.
- DVI (Digital Visual Interface)
This provides a high speed digital connection for
- AC Adapter visual data types that is display technology
Device that converts AC(90V~240V) to DC independent. this interface is primarily forcused at
(+12V or 14V) providing a connection between a computer and
its display device.
- SMPS(Switching Mode Power Supply)
Switching Mode Power supply. This design - L.V.D.S.(Low Voltage Differential Signaling)
technology is used to step up/down the input A kind of transmission method for Digital.It can be
power by switching on/off used from Main PBA to Panel.
- FRC(Frame Rate Controller) - HDMI(high definition multimedia interface)
Technology that change image frame quantity Superhigh speed multimedia interface that can
displayed on screen for one second. incorporate grass digital audio and video signal
Actually TFT-LCD panel require 60 pcs of frame that is not compressed and transmit. By standard
for one second. so,this technology is needed to that replace existent composite, supermarket
convert input image to 60 pcs regardless input video, analog interface with component video, is
frame quantity. applied mainly to newly developed DVD player,
HDTV, set top box etc..circuits is simple by
handling as it is without compressing digital video
- Image Scaler and audio of 5Gbps degrees, and degradation of
Technology that convert various input resolution quality does not happen, and protection of
to other resolution.(ex. 640* 480 to 1024*768) contents mastication by HDCP ( High-bandwidth
Digital Content Protection ) is supported, and
there is advantage that single cable link use is
- Auto Configuration(Auto adjustment) simple.Transposition is available with digital visual
This is an algorithm to adjust monitor to optimum interface (DVI) used mainly in computer industry
condition by pushing one key. through CEA-861 profile analysis for DTV.
American Institute of Electrical an Electronic
Engineering (IEEE) proposed first and participate
- OSD(On Screen Display) in some dying injunction electronic company,
On screen display. customer can control the broadcasting industry, movie studio.
screen easily with this.
14-1
14 Reference Infomation
- T.M.D.S - Plug & Play
(Transition minimized Differential Signaling) This is a function that provides the best quality
a kind of transmission method for Digital. screen for the user by allowing the computer
It can be used from Video card to Main PBA. and the monitor to exchange information
automatically. This monitor follows the
international standard VESA DDC for the
- DDC(Display data channel) Plug & Play function.
It is a communication method between Host
Computer and related equipment.
It can make it Plug and Play between PC and - Resolution
Monitor. The number of horizontal and vertical dots used
to compose the screen image is called 'resolution'.
This number shows the accuracy of the display.
- EDID High resolution is good for performing multiple
Extended Display Identification Data PC can tasks as more image information can be shown
rec ognize the monitor information as Product on the screen.
data, Product name,Display mode,Serial Example: If the resolution is 1280 x 1024 , this
number and Signal source,etc through DDC means the screen is composed of 1280 horizontal
Line communicating with PC and Monitor. dots (horizontal resolution) and 1024 vertical lines
(vertical resolution).
- Dot Pitch
The image on a monitor is composed of red, - BTSC
green and blue dots. The closer the dots, the Broadcast Television System Committee The
higher the resolution. The distance between two stereo broadcasting system that is used in most
dots of the same color is called the 'Dot Pitch'. of the countries that have adopted the NTSC
Unit: mm system, including the United States, Canada,
Chile, Venezuela and Taiwan. It also refers to the
organization that has been organized to promote
- Vertical Frequency its development and management.
The screen must be redrawn several times per
second in order to create and display an image
for the user. The frequency of this repetition per - EIAJ
second is called Vertical Frequency or Refresh Electronic Industries Association of Japan.
Rate. Unit: Hz
Example: If the same light repeats itself 60 times
per second, this is regarded as 60 Hz. - RF Cable
A round signal cable generally used for TV
antennas.
- Horizontal Frequency
The time to scan one line connecting the right
edge to the left edge of the screen horizontally is - Satellite Broadcasting
called Horizontal Cycle. The inverse number of Broadcasting service provided via satellite.
the Horizontal Cycle is called Horizontal Enables high picture quality and clear sound
Frequency. Unit: kHz throughout the country regardless of the location
of the viewer.
- Interlace and Non-Interlace Methods
Showing the horizontal lines of the screen from - Sound Balance
the top to the bottom in order is called the Balances the levels of the sound coming from
Non-Interlace method while showing odd lines each speaker in televisions with two speakers.
and then even lines in turn is called the Interlace
method. The Non-Interlace method is used for the
majority of monitors to ensure a clear image.
The Interlace method is the same as that
used in TVs.
14-2
14 Reference Infomation
- Cable TV
Whereas the terrestrial broadcasting is delivered
via frequency signals through the air, cable
broadcasting is transmitted via a cable network.
In order to view cable TV, one must purchase a
cable receiver and hook it up to the cable network.
- CATV
"CATV" refers to the broadcasting service offered
at hotels, schools and other buildings through
their own broadcasting system, apart from VHF
or UHF broadcasting by terrestrial broadcasters.
The CATV programs may include movies,
entertainment and educational programs.
(Different from cable TV.)
CATV can be viewed only within the area in
which the CATV service is offered.
- S-Video
Short for "Super Video." S-Video allows up to
800 lines of horizontal resolution, enabling
high-quality video.
- VHF/UHF
VHF indicates TV channels 2 to 13, and UHF
indicates channels 14 through 69.
- Channel Fine Tuning
This feature allows the viewer to fine-tune the
TV channel to obtain the best viewing conditions.
The Samsung LCD TV has both automatic and
manual channel fine-tuning features to enable
the viewer to adjust their desired settings.
- External Device Input
External device input refers to video input from
such external video devices as VCRs, camcorders
and DVD players, separate from a TV broadcast.
14-3
14 Reference Infomation
14-2 Pin Assignments
14-2-1 DVI-D
Sync
Type 24P DVI-D
Pin No.
1 Rx2- 13 NC
2 Rx2+ 14 DDC Input power (+5V)
3 GND 15 IDENT-DVI
4 NC 16 Output Signal (HDCP Control)
5 NC 17 Rx0-
6 DDC - SCL 18 Rx0+
7 DDC - SDA 19 GND
8 NC 20 NC
9 Rx1- 21 NC
10 Rx1+ 22 GND
11 GND 23 RxC+
12 NC 24 RxC-
Figure 1.
14-4
14 Reference Infomation
14-2-2 Component 1, 2 14-2-3 S-Video
Y Pin Separate
RCA Green
GND 1 GND
2 Y
Pb (Cb) 3 C
RCA Blue
4 GND
GND
5 GND
Pr (Cr)
RCA Red
GND
Audio L
RCA White 14-2-5 D-SUB
GND
Pin Separate
Audio R
RCA Red 1 Red
GND
2 Green
3 Blue
4 GND
5 GND
14-2-4 A/V 1,2 6 GND Red
7 GND Green
RCA Yellow CVBS 8 GND Blue
9 DDC Input power(+5V)
Audio L 10 IDENT PC
RCA White 11 GND
GND
12 DDC Data(SDA)
Audio R 13 H SYNC
RCA Red 14 V SYNC
GND 15 DDC Clock(SCL)
14-2-6 PC Display mode
Both screen position and size will vary depending on the type of PC monitor and its resolution.
The resolutions in the table are recommended. (All resolutions between the supported limits are supported)
Mode Resolution Horizontal Vertical Pixel Clock Sync Polarity
Frequency (kHz) Frequency (Hz) Frequency (MHz) (H/V)
IBM 640 x 480 31.469 59.940 25.175 -/-
720 x 400 31.469 70.087 28.322 -/+
VESA 640 x 480 37.861 72.809 31.500 -/-
640 x 480 37.500 75.000 31.500 -/-
800 x 600 37.879 60.317 40.000 + /+
800 x 600 48.077 72.188 50.000 + /+
800 x 600 46.875 75.000 49.500 + /+
1024 x 768 48.364 60.000 65.000 -/-
1024 x 768 56.476 70.069 75.000 -/-
1024 x 768 60.023 75.029 78.750 + /+
1360 x 768 47.712 60.015 85.800 + /+
- The interlace mode is not supported.
- The set might operate abnormally if a non-standard video format is selected.
- DVI dose not support PC function.
14-5
14 Reference Infomation
14-3 Timing Chart
This section of the service manual describes the timing that the computer industry recognizes as standard for computer-
generated video signals.
14-3-1 LCD Panel Mode1 mode
14-6
14 Reference Infomation
14-3-2 Supported Modes (1)
14-7
14 Reference Infomation
14-3-3 Supported Modes (2)
14-8
14 Reference Infomation
14-3-4 Supported Modes (3)
14-9
14 Reference Infomation
Memo
14-10
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