Text preview for : Alignment & Adjustment.pdf part of Samsung LE26M51B, LE32M51B, LE32M61B, LE40M51B Service Manual TFT-LCD Tv color (mod. LE40M61B, LE46M51B) [P/N: BN82-00128M-00] - Part 1/6 - Tot. File PDF 15
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3 Alignments and Adjustments
3 Alignments and Adjustments
3-1 Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. 2. Use the specified test equipment or its equivalent. 3. Correct impedance matching is essential. 4. Avoid overload. Excessive signal from a sweep generator might overload the front-end of the TV. When inserting signal markers, do not allow the marker generator to distort test result. 5. Connect the TV only to an AC power source with voltage and frequency as specified on the backcover nameplate. 6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure that the power cord is disconnected before replacing any parts. 7. To protect aganist shock hazard, use an isolation transform.
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3 Alignments and Adjustments
3-2 How to Access Service Mode
3-2-1 Entering Factory Mode
" "
I FO N
MENU
MU TE
- If you have Factory remote - control
- 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)
3-2-2 Panel Check
Specially for LE32R51BX, You have to check Panel Maker Because of different adjustments as follows. First of all, Check the label rating! 1) Label Rating File
* If not printed you could consider S(sec) panel mark. 2) If Panel Mark is "A", Set the factory mode indicating as follows. * Option Byte 1. Inch Option 32" 2. Gamma 32"AUO 3. Panel Option AUO Others are same shown below.
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3-3 Factory Data
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3-4 Service Adjustment
3-4-1 White Balance - Calibration
If picture color is wrong, do calibration first. Equipment : CA210, Patten : 16 gray Execute calibration in Factory Mode Source AV : PAL composite, Component : 1280*720/60Hz PC : 1024*768/60Hz
3-4-2 White Balance - 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
Toshiba Patten 3-6
3 Alignments and Adjustments
3-4-3 Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE) - INPUT SIGNAL GENERATOR : MSPG-925LTH * Mode NO NO 1 : 744X484@60 Hz 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) Please use the MSPG-925 LTH generator for model LE26M51B/LE32M51B/LE40M51B/LE46M51B.
3-4-4 Method of Adjustment
1. Adjust the basic level of DTV and PC input signals. a) Set the input to the mode in which the adjustment will be made (DTV PC ). * Input signal - DTV Mode : Model #6 (1280*720 Mode), Pattern #36 - PC Mode : Model #21 (1024*768 Mode), Pattern #16 (Picture 4-1) b) Enter factory Calibration, confirm the ADC data (DTV, PC Mode Only). * ADC default value : Table 4-3.
Picture 4-1 Toshiba ABL Pattern
2. Adjust the white balance of RF, DTV, PC and DVI Modes. a) Set the input to the mode in which the adjustment will be made (RF DTV PC DVI). * Input signal - VIDEO Mode : Model #1 (744*484 Mode), Pattern #16 - DTV,DVI Mode : Model #6 (1280*720 Mode), Pattern #16 - PC Mode : Model #21 (1024*768 Mode), Pattern #16 b) Enter factory color control, confirm the data.
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3 Alignments and Adjustments 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. * Do not adjust green offset data. Picture 4-2 Toshiba ABL Pattern
Low light Measurement point
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. Picture 4-3 Toshiba ABL Pattern
High light Measurement point
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3-5 Software Upgrade
3-5-1 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.
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Memo
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