Samsung Le 27t51b Service Manual

SERVICE
Manual
LCD TVFashion Feature
LCD-TV
Chassis Model
GTR23KE LE23T51B
GTR27KE LE27T51B
GTR32KE LE32T51B
- RF, DVI-D, PC(Analog), 2Scart, Component,   
Video, S-Video
- Brightness :  500cd/
- Contrast Ratio :  
23: 800:1,  27: 1000:1,  32: 800:1
- Respense time :  16ms
- Dynamic contrast
- PIP (on PC only)
 

- TFT-LCD
(Thin film Transistor Liquid Crystal Display)
ADC(Analog to Digital Converter) 
This is a circuit that converts from analog signal to
digital signals.
- PLL(Phase Locked Loop)
During progressing ADC, Device makes clock syn-
chronizing HSYNC with Video clock  
- Inverter
Device that supply Power to LCD panel lamp. this
device gernerate about 1,500~2,000V.
- AC Adapter
Device that converts AC(90V~240V) to DC(+12V
or 14V)
- SMPS(Switching Mode Power Supply)
Switching Mode Power supply. This design...

14 Reference Infomation
14-2
- T.M.D.S
(Transition minimized Differential Signaling)
a kind of transmission method for Digital. 
It can be used from Video card to Main PBA.
- DDC(Display data channel)
It is a communication method between Host
Computer and related equipment.
It can make it Plug and Play between  PC and
Monitor.
- EDID
Extended Display Identification Data PC can rec-
ognize the monitor information as Product data,
Product name,Display mode,Serial number and
Signal source,etc through DDC...

- 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 broad-
casting is transmitted via a cable network. In order
to view cable TV, one must purchase a cable...

14 Reference Infomation
14-4
14-2-1 DVI-D
14-2 Pin Assignments
NC
DDC Input power (+5V)
IDENT-DVI
Output Signal (HDCP Control)
Rx0-
Rx0+
GND
NC
NC
GND
RxC+
RxC- 13
14
15
16
17
18
19
20
21
22
23
24 1
2
3
4
5
6
7
8
9
10
11
12Rx2-
Rx2+
GND
NC
NC
DDC - SCL
DDC - SDA
NC
Rx1-
Rx1+
GND
NC Sync
Type
Pin No.24P DVI-D
Figure 1.
 

14 Reference Infomation
14-5
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)
- 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.
PinSeparate
1
2
3
4
5GND
Y
C
GND
GND
RCA Green
RCA Blue
RCA Red
RCA White
RCA RedY
GND
Pb (Cb)
GND
Pr (Cr)
GND
Audio L
GND...

14 Reference Infomation
14-6
14-2-7 Scart 1
14-2-8 Scart 2
Pin Signal
1 Audio output R
2 Audio input R
3 Audio output L
4 Audio common GND
5 Video GND (RGB blue)
6 Audio input L
7 RGB blue input
8 Switching voltage
9 Video GND (RGB green)
10 NC
11 RGB green input
Pin Signal
12 NC
13 Video GND (RGB red)
14 GND
15 RGB red input
16 Fast Blanking signal 
(RGB switching)
17 Video output GND
18 Video input GND
19 Video output (CVBS out)
20 Video input (CVBS in)
21 Common GND
Pin Signal
1 Audio output R
2 Audio...

14 Reference Infomation
14-7
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 Reference Infomation
14-8
14-3-2 Supported Modes (1)
 

14 Reference Infomation
14-9
14-3-3 Supported Modes (2)