Samsung LE 15S51B Service Manual

							2 Product Specifications
2-3
2-3 LE20S51BP Specifications
LCD PanelTFT-LCD panel, RGB vertical stripe, normaly white, 20-Inch viewable, 0.511 (H) x 0.511(V)mm pixel pitch
Scanning FrequencyHorizontal :  28 ~ 47 kHz / Vertical :  50 ~ 75Hz
Display Colors 16.7 Million
Maximum Resolution   Horizontal : 800 Pixels
Vertical     : 600 Pixels
Input Video Signal Analog 0.7 Vp-p ± 5% positive at 75
, internally terminated 
Input Sync Signal Type :  Seperate H/V
Level :  TTL level
Maximum Pixel Clock rate80 MHz
Active Display
Horizontal/Vertical 575.77 (H) / 323.71 (V) mm
Power Supply AC 100 ~ 260 V (50 / 60Hz)
Power Consumption 55W / 
						

							2 Product Specifications
2-4
2-4 Spec Comparison 
LE15S51B
40W

						

							2 Product Specifications
2-5
2-5 Option Specification
Item Item Name
Remote Control /
Batteries (AAA x 2)
Power Cord
Owner s
Instructions
Wall Mount kitBN59-00437A /
4301-000103
3903-000085
BN68-00910A
BN96-01270A
Code.No Remark  
 
						

							Memo
2 Product Specifications
2-6
 
						

							14 Reference Infomation
14-1 -Dot Pitch
The image on a monitor is composed of red, green and blue dots. The closer the dots, the higher the res-
olution. The distance between two dots of the same color is called the Dot Pitch. Unit: mm 
-Vertical Frequency 
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 second is called Vertical Frequency or Refresh Rate. Unit: Hz 
Example: If the same light repeats itself 60 times per second, this is regarded as 60 Hz. 
-Horizontal Frequency 
The time to scan one line connecting the right edge to the left edge of the screen horizontally is called
Horizontal Cycle. The inverse number of the Horizontal Cycle is called Horizontal Frequency. Unit: kHz 
-Interlace and Non-Interlace Methods 
Showing the horizontal lines of the screen from the top to the bottom in order is called the Non-Interlace
method while showing odd lines 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. 
-Plug & Play 
This is a function that provides the best quality screen for the user by allowing the computer and the mon-
itor to exchange information automatically. This monitor follows the international standard VESA DDC for
the Plug & Play function. 
-Resolution 
The number of horizontal and vertical dots used to compose the screen image is called resolution. This
number shows the accuracy of the display. High resolution is good for performing multiple tasks as more
image information can be shown on the screen. 
Example:  If the resolution is 1920 x 1200 , this means the screen is composed of 1920 horizontal dots
(horizontal resolution) and 1200 vertical lines (vertical resolution). 
-A2 
This system uses two carriers to transmit voice data. Countries such as South Korea and Germany use
this system.
-BTSC 
Broadcast Television System Committee
The stereo broadcasting system that is used in most of the countries that have adopted the NTSC sys-
tem, including the United States, Canada, Chile, Venezuela and Taiwan. It also refers to the organization
that has been organized to promote its development and management.
14 Reference Infomation
14-1 Technical Terms
 
						

							14 Reference Infomation
14-2-EIAJ 
Electronic Industries Association of Japan.
-RF Cable
A round signal cable generally used for TV antennas. 
-Satellite Broadcasting
Broadcasting service provided via satellite. Enables high picture quality and clear sound throughout the
country regardless of the location of the viewer.
-Sound Balance 
Balances the levels of the sound coming from each speaker in televisions with two speakers. 
-Cable TV 
Whereas the terrestrial broadcasting is delivered via frequency signals through the air, cable broadcast-
ing 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 pro-
grams 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 Reference Infomation
14-3
14-2 Pin Assignments
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 RCA White
RCA RedCVBS
Audio L
GND
Audio R
GND
14-2-3 A/V
RCA Yellow
PinSeparate
1
2
3
4
5GND
Y
C
GND
GND
14-2-2 S-Video
PinSeparate
Red
Green
Blue
GND
GND (DDC Return)
GND-Red
GND-Green
GND-Blue
No Connection
GND-Sync / Self Test
GND
DDC Data
H - Sync
V - Sync
DDC Clock
14-2-4 D-SUB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
NoPIN
Sound R out
Sound R In
Sound L out
GND
GND
Sound L In
Cb
ID
GND
NC
Y
NC
GND
GND
Cr
BL In
GND
GND
Video Out
Video In
GND
14-2-1 Scart
 
						

							14 Reference Infomation
14-4
Separate Sync
14-3 Timing Chart
This section of the service manual describes the timing that the computer industry recognizes as standard for com-
puter-generated video signals.
CD
AO
E
BP
Video
SyncSync
Video
QRS
A : Line time total B : Horizontal sync width O : Frame time total P : Vertical sync width
C : Back porch D : Active time Q : Back porch R : Active time
E : Front porch S : Front porch
H/V Composite Sync
Sync-on-Green79.976
12.504
1.067
1.837
9.481
0.119
75.025
13.329
0.038
0.475
12.804
0.013
135.000
Positive
Positive
Separate
1280/75Hz, 50Hz
1280x10241024/75Hz
1024 x 768
60.023
16.660
1.219
2.235
13.003
0.203
75.029
13.328
0.050
0.466
12.795
0.017
78.750
Positive
Positive
Separate 31.469
31.777
3.813
1.589
26.058
0.318
70.087
14.268
0.064
0.858
13.155
0.191
28.322
Negative
Positive
Separate fH (KHz)
A µsec
B µsec
C µsec
D µsec
E µsec
fV (Hz)
O msec
P msec
Q msec
R msec
S msec
Clock
Freq.
(MHz)
Polarity
H.Sync
V.Sync
Remark
IBM
640/75 Hz, 
60Hz, 72Hz
640 x 480800/75 Hz, 56Hz,
60Hz, 72Hz
800 x 6001024/60Hz
1024 x 768 VGA2/
70 Hz
720 x 400VGA3/
60 Hz
640 x 480
Table 2-1 Timing Chart
31.469
31.778
3.813
1.589
26.058
0.318
59.940
16.683
0.064
0.794
15.761
0.064
25.175
Negative
Negative
Separate37.500
26.667
2.032
3.810
20.317
0.508
75.000
13.333
0.080
0.427
12.800
0.027
31.500
Negative
Negative
Separate46.875
21.333
1.616
3.232
16.162
0.323
75.000
13.333
0.064
0.448
12.800
0.021
49.500
Positive
Positive
Separate48.363
20.677
2.092
2.462
15.754
0.369
60.004
16.666
0.124
0.600
15.880
0.062
75.000
Negative
Negative
Separate
ModeVESA
Timing
 
						

							14 Reference Infomation
14-5
14-4 Preset Timing Modes
If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen
will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED
is on. Refer to the video card manual and adjust the screen as follows.
IBM640 X 350  31.469  70.086  25.175  + / -
720 X 400  31.469  70.087  28.322  - / +
640 X 480  31.469  59.940  25.175 - / -
VESA640 X 480  35.000  70.000  28.560  - / -
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  + / +
800 X 600  43.750  70.000  45.500  - / -
1024 X 768  48.363  60.004  65.000  - / -
1024 X 768  56.476  70.069  75.000  - / -
1024 X 768  56.672  72.000  78.434  - / -
1024 X 768  60.023  75.029  78.750  + / +
1360 X 768  47.712  60.015 85.800  + / +
Mode ResolutionHorizontal
Frequency
(kHz)Vertical
Frequency
(Hz)Pixel Clock
Frequency
(MHz)Sync
Polarity
(H/V)
 
						

							14 Reference Infomation
14-6
14-5 Panel Description
SEC LT140X1-002 BN07-00004A SA BN68-00239H -
SEC LT150XS-L01 BN07-00009A SB -
SEC LT150XS-L01-B BN07-00022A SC -
SEC LTM150XS-L02 BN07-00005A SD -
SEC LT181E2-132 BN07-00001A SE -
SEC LT150XS-T01 BN07-00010A SF -
SEC LTM181E3-132 BN07-00019A SG -
SEC LT170E2-131 BN07-10001D SH -
SEC LT181E2-131 BN07-10001E SJ -
SEC LTM170E4-L01 BN07-00018A SK -
SEC LTM240W1-L01 BN07-00015A SL -
SEC LTM213U3-L01 BN07-00016A SM -
SEC LTM150XH-L01 BN07-00026A SN -
SEC LTM150XH-L03 BN07-00027A SP -
SEC LTM150XS-L01 BN07-00032A SQ DELL(ZPD)
SEC LTM181E4-L01  BN07-00034A SR PVA
SEC LTM170EH-L01 BN07-00036A SS TN
SEC LTM170E5-L01 BN07-00037A SU PVA
SEC LTM150XH-L11 BN07-00041A SV -
SEC LTM213U4-L01 BN07-00039A SW PVA
SEC LTM150XH-L01(ZPD) BN07-00045A SX ZPD
SEC  LTM150XH-L04 BN07-00046A SY New panel with high brightness
SEC  LTM170W1-L01 BN07-00047A SZ Panel for TV
SEC  LTM150XH-L06 BN07-00053A EA Panel for TV/ High luminance for 450cd _ SONY&EOS Team Panel for TV
SEC  LTM153W1-L01 BN07-00054A EB Use NIKE MODEL
SEC  LTM170EH-L05                                  BN07-00055A EC Panel EOS proj. for high brightness of 17 EH-L05
SEC  LTM170E5-L03 BN07-00056A ED Dell 1702FP pro. E4. EH mechanical Compatible
SEC  LTM190E1-L01 BN07-00057A EE DELL 1900 FP
SEC  LTM181E5-L01 BN07-00061A EF 18 narrow bezel GH18PS
SEC  LTM150XP-L01 BN07-00065A EG AMLCD PVA PANEL
SEC  LTM240W1-L02 BN07-00062A EH Panel for 15 Wide TV
SEC  LTM170EU-L01 BN07-00071A EJ Slim design, TN
SEC  LTM170E5-L04 BN07-00072A EK E5-L04 6 bits FRC... for IBM
SEC  LTA220W1-L01 BN07-00074A EL Panel for 22 TV
SEC  LTM170E6-L02 BN07-00075A EM AMLCD Narrow & slim design 17  PVA mode
SEC  LTM170W1-L01 BN07-00082A EN LTM170W1-L01  ZPD panel
SEC  LTM170EH-L01 BN07-00080A EP LTM170EH-L01 ZPD panel
SEC  LTM170E5-L01 BN07-00081A EQ LTM170E5-L01 ZPD panel
SEC  LTM170EH-L05 BN07-00083A ER LTM170EH-L05 ZPD panel
SEC  LTM170E5-L03 BN07-00084A ES LTM170E5-L03 ZPD panel
SEC  LTM170EU-L01 BN07-00085A ET LTM170EU-L01 ZPD panel
SEC  LTM170E5-L04 BN07-00086A EU LTM170E5-L04 ZPD panel
SEC  LTM170E6-L02 BN07-00087A EV LTM170E6-L02 ZPD panel
SEC  LTM150XH-L06 BN07-00091A EW Color coordinates change for LCD TV
SEC  LTM153W1-L01 BN07-00092A EX AMLCD WIDE 15,9/10
SEC  LTM170W1-L01 BN07-00100A EY Color Coordinates change code management
SEC  LTM170EH-L05 BN07-00097A EZ LTM170E5-L05 Color Coordinates Change Panel Code
SEC  LTA400W1-L01 BN07-00109A S1 PANEL of AMLCD 40 TV
SEC  LTM153W1-L01 BN07-00110A S2 Color coordinates change 0.280/0.290, 10000k & ZPD Panel
SEC  LTM150XH-L06 BN07-00111A S3 Color coordinates change 0.280/0.290, 10000k & ZPD Panel
Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks