Friday, November 20, 2015

SAMSUNG LE37S81BX SERVICE MODE ADJUSTMENTS AND POWER SUPPLY CIRCUIT

SAMSUNG LE37S81BX  


SERVICE MODE ADJUSTMENTS AND POWER SUPPLY CIRCUIT 

How to Access Service Mode
To enter to service mode press the following buttons on the remote in sequence
Power OFF  >INFO > MENU > MUTE > Power ON
# If you have Factory remote - control
PICTURE ON > DISPLAY > FACTORY
#The buttons are active in the service mode.
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0~9)
2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -, Menu, TV/VIDEO(Enter)
Panel Check
Specially for LE26,32R7**, You have to check Panel Maker Because of different adjustments as follows.
First of all, Check the label rating!
If Panel Mark is "A", Set the factory mode indicating as follows.
Panel BOM(Bill of material) : BN07-00289A
Connector between Panel and Power Unit : BN39-00603M (300mm)
# Option Byte
1. Gamma "AUO"
2. Panel Option "AUO"
If Panel Mark is "S" or not printed.
Set the factory mode indicating as follows.
Panel BOM(Bill of material) : BN07-00247A
Connector between Panel and Power Unit : BN39-00603M (300mm)
# Option Byte
1. Gamma "AMLCD"
2. Panel Option "AMLCD_INT"
If Panel Mark is "C" , Set the Factory mode indicating as follows.
Panel BOM(Bill of Material) : BN07-00207A
Connecotor between Panel and Powe Unit : BN39-00659A(200mm)
# Option Byte
1. Gamma " CMO "
2. Panel Option " CMO "
Service Adjustment
Calibrating White Balance 
If picture color is wrong, do calibration first.
Equipment : CA210, Patten : chess pattern
Execute calibration in Factory Mode
Source AV : PAL composite, Component : 1280-720/60Hz
PC : 1024-768/60Hz
 Adjustment
If picture color is wrong, check White Balance condition.
Equipment : CA210, Patten : Toshiba
Adjust W/B in Factory Mode
Sub brightness and R/G/B Offset controls low light region
Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz
HDMI[DVI] : 1280*720/60Hz
[ Test Pattern : MSPG-945 Series Pattern #16 ]
#Color temperature
1500K +/-500, -6 ~-20 MPCD
#Color coordinate
H/L : 267/263 +/- 2 35.0 Ft +/- 2.0Ft
L/L : 270/260 +/- 3 1.5 Ft +/- 0.2Ft
Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
- INPUT SIGNAL GENERATOR : MSPG-925LTH
# Mode NO 2 : 744X484@60 Hz
NO 6 : 1280X720@60 Hz
NO 21 : 1024X768@60 Hz
# Pattern NO 36 : 16 Color Pattern
NO 16 : Toshiba ABL Pattern
2. Optical measuring device : CA210 (FL)
Method of Adjustment
1. Adjust the white balance of AV, Component and DVI Modes. (AV Component)
a) Set the input to the mode in which the adjustment will be made (RF DTV PC DVI).
# Input signal - VIDEO Mode : Model #2 (744-484 Mode), Pattern #16
# DTV,DVI Mode : Model #6 (1280-720 Mode), Pattern #16
# HDMI Mode: Model #6(1280-720 Mode), Pattern #16
b) Enter factory color control, confirm the data.
c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
# Adjust sub - Brightness to set the 'Y' value.
# Adjust red offset ('x') and blue offset ('y') to the color coordinates
d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
* Do not adjust the green gain and sub-contrast (Y) data.
3 Alignments and Adjustments
d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
# Do not adjust the green gain and sub-contrast (Y) data.
Software Upgrade
How to Update Flash ROM
1. Installthe Flash Downloader
ConnectSet(Service Jack)and Jig Cable to execute Program Update.
2. Flash Downloader program update
#Before Turning on the set,Click "connect"which is under of OSD Screen!
#Turn on the Set.
POWER SUPPLY 

CLICK ON THE IMAGE TO ZOOM IN