SAMSUNG LE15S51BP, LE20S51BP, LE20S52BP Service Manual

TFT-LCD TV

Chassis Model
GPU15KE LE15S51BP
GPU20KE LE20S51BP

LE20S52BP

Manual

SERVICE

TFT-LCD TV Fashion Feature

- Easy-to-use remote control

- Easy-to-use on-screen menu system

- Automatic timer to turn the TV on and off

- Automatic channel tuning for up to 194
channels. (Air : 69 , STD : 125 )

- A special filter to reduce or eliminate
reception problems

- Fine tuning control for the sharpest picture
possible

- Built-in, dual channel speakers

- Headphone jack for private listening

3 Alignments and Adjustments

3-2

3-2 How to Access Service Mode

3-2-1 Entering Factory Mode

1. To enter “Service Mode” Press the remote -control keys in this sequence :

- If you do not have Factory remote - control

- If you have Factory remote - control

3-3 Factory Data

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-. OSD which the basic adjustment is added.
PC Auto Color
Video Auto Color
Reset
DLC/MWE Part
SFR PART
Sub Adjust
UOC Adjust
Option
Checksum
Panel Information
Bus Stop : OFF
*. 2005/06/23: MCU firmware date.
*.

T-PLUS25NUS-0906: MCU firmware version information

(this information must be appended due to a compatibility problem report.)

1) Reset: Factory reset

2) Bus Stop: The communication Line ON / OFF
Move to the ( -) / (+) key, select the 'Enter' key.

3) Auto adjustment

4) PC Auto Color/ Video Auto Color :in case that color
of all screen is wrong, excute the PC Auto color at
16 gray pattern(refer to attach left 16gray pattern)

5) Checksum: MCU firmware checksum information
(this information must be appended due to a compatibility problem report.)

Service
PC Auto Color

Video Auto Color
Reset
DLC/MWE Part
SFR PART
Sub Adjust
UOC Adjust
Option
Checksum
Panel Information
Bus Stop : OFF

2005/06/23
T-pls25nus-0906

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Service
PC Auto Color

Video Auto Color

Service Function

Reset

Adjust

DLC/MWE Part

PC Auto Color

SFR PART

Option

Sub Adjust

Checksum

UOC Adjust

Panel Information

Option

Reset

Checksum

Bus Stop

Panel Information
Bus Stop : OFF

2005/04/20
TM-BRHMS20WW-0714

2005/04/20
TM-BRHMS20WW-0714

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3 Alignments and Adjustments

3-3

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6) Dynamic Luma Adjustment

" - " : RF, AV, S_Video -> all store
" + " : RF, AV, S_Video -> apart store

7) Special Function Register

DLC/MWE Part

NVRAM Reset ¢”
DLC- 0-10 0
MWE- 0-1 1
Demo 0-1 0
Brightness+ 0-255 100
Contrast+ 0-255 113
Sharpness+ -10-10 1
Hue+ 0-100 50
Saturation+ 0-255 125
R Offset 46
G Offset 50
B Offset 56
R Gain 58
G Gain 50
B Gain 51

SFR Part

DCXO Sel. 0
DCXO Tune 64
OVMADAPT 0-1 1
OVMTHR 0-3 2
IF Demod 0-63 38
F FI 0-1 0

R0:77 R1:71 R2:81
R3:18 R4:0 R5:1F

Sub Adjust
R Blk Lvl+ 0-63 28

G Blk Lvl+ 0-63 20
Peak Frq/DLY+0-3 0
Peak+ 0-63 40
Soft Clp Lvl- 0-3 0
W Limit- 0-15 8
R White Pnt+ 0-63 37
G White Pnt+ 0-63 31
B White Pnt+ 0-63 31
AGC T-O- 0-63 23

3 Alignments and Adjustments

3-4

8) UOC Adjustment

BKS : Black stretch
Wsx : White stretch

9) Option: Spread Step / Spread Span (for EMI test )

10) Panel Information

various function are included in information.

- Monitor On Time : Power On Time

- Panel Cycle : Panel On/off time (Power off, Mode
change, DPMS on/off ...)

- Panel : Panel on Time
(when the panel is changed , select the Reset )

- Lower lamp : Lower lamp on time

(when the Lower lamp is changed , select the Reset )

- Upper lamp : Upper Lamp on time
(when the Upper Lamp is changed , select the Reset)

UOC Adjust
BKS- 0-1 1

WSx- 0-3 2

0 0 0 0 0 20 20 2
0 20 20 20 20 20 20 20 2
0 20 20 20 19 26 …..

7 Block Diagrams

7-1

7 Block Diagram