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...

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...

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...

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...

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...

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  - / -...

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...