Electrohelponline: June 2018

SMPS circuit diagram, how to enter the service mode, firmware update, white balance adjustment and more – Sharp LC19S410, LC22S510 LED LCD TV

ADJUSTMENT PROCEDURE: Display adjustment

White Balance adjustment
Only adjust YPbPr Mode and copy to all of input source

Equipment Requirements: Minolta CA-210 or Equivalent Color analyzer
Astor Pattern Generator VG-848 , VG-859 or equivalent instrument.
An internal full white pattern is available in the MT5387 platform, you can use the internal pattern to replace Astor
Pattern Generator VG-848.
Input requirements:

YPbPr signal

1. 1080i mode, RGB Full white by VG-848 , VG-859 or internal full white pattern

2. Select Picture mode to Standard mode and check the x, y data.
Input Signal Strength : 1 Vpp for Y signal
If use internal pattern, send UART command: /n/ycproc/scepat 1 818 (80% white).
If use internal pattern, send UART command: /n/ycproc/scepat 1 204 (20% white).
Input Injection Point : YPbPr (RAC jack)

Input Signal Strength : 1 Vpp for Y signal

If use internal pattern, send UART command: /n/ycproc/scepat 1 818 (80% white).
If use internal pattern, send UART command: /n/ycproc/scepat 1 204 (20% white)

Input Injection Point : YPbPr (RAC jack)

Alignment method:

1. Select source as “INPUT 2 ” (Component 1).
2. Set Smart Picture mode as “Standard”.
3. Apply “RGB Full white” pattern by signal generator or internal full white pattern.
4. Enter factory mode menu: press MENU + Numeric keys “1999”

1. At FAC mode menu, select ”19. Color temp” item and change to “Cool”
2. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).
If use internal pattern, set level to 818 (80% white pattern).
3. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Cool” color coordinates specification below. (keep 21. Scaler G GAIN at 0)
4. Apply RGB Full white pattern and change signal level to 48 (20% white pattern)
If use internal pattern, set level to 204 (20% white pattern).
5. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Cool” color coordinates specification below. (keep 24.Scaler G Offset at 0)
6. Repeat step 2, 3, 4, 5, twice to meet “Cool” color coordinates specification below.
7. Select ”26. Clr temp Copy” item and perss RC “=►”. The Cool adjust value will copy to all of input source automatically.

8. Select ”19. Color temp” item and change to “Normal”.
9. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).
If use internal pattern, set level to 818 (80% white pattern).
10. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Normal” color coordinates specification below. (keep 21. Scaler G GAIN at 0)
11. Apply RGB Full white pattern and change signal level to 48 (20% white pattern)
If use internal pattern, set level to 204 (20% white pattern).
12. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Normal” color coordinates specification below. (keep 24.Scaler G Offset at 0)
13. Repeat step 9, 10, 11, 12, twice to meet “Normal” color coordinates specification below.
14. Select ”26. Clr temp Copy” item and perss RC “=► ”. The Normal adjust value will copy to all of input source automatically.
15. Select ”19. Color temp” item and change to “Warm”.
16. Apply RGB Full white pattern and change signal level to 204 (80% white pattern).

If use internal pattern, set level to 818 (80% white pattern).
17. Adjust the 20. Scaler R GAIN, 22. Scaler B GAIN values to meet “Warm” color coordinates specification below. (keep 21. Scaler G GAIN at 0)
18. Apply RGB Full white pattern and change signal level to 48 (20% white pattern)
If use internal pattern, set level to 204 (20% white pattern).

19. Adjust the 23. Scaler R Offset, 25.Scaler B Offset values to meet “Warm” color coordinates specification below. (keep 24.Scaler G Offset at 0)
20. Repeat step 16, 17, 18, 19, twice to meet “Warml” color coordinates specification below.
21. Select ”26. Clr temp Copy” item and perss RC “=►” . The warm adjust value will copy to all of input source automatically.
22. Select ”19. Color temp” item and change to “User”.
23. Copy “Normal” adjust value to 20. Scaler R GAIN, 22. Scaler B GAIN, 23. Scaler R Offset, 25.Scaler B Offset.
24. Select ”26. Clr temp Copy” item and perss RC “=►”. The User adjust value will copy to all of input source automatically.

Tolerance ∆x, ∆y = +/- 0.005
Factory alignment tolerance at 80% white ∆x, ∆y = +/- 0.005 at 20% white ∆x, ∆y = +/- 0.009
Check the 16 grayscale pattern should be distinguished and color bar is correct
Reset AV setting in OSD menu, picture mode shall be recalled to be “Standard” mode.

1. Use Minolta CA-210 for color coordinates and luminance check.
2. Before adjusting,all colour analyzers (CA-210) should be coordinates with a same reference TV set.
3. Luminance > 250 cd/m2 in the center of the screen when Brightness control at 100; Contrast control at 100

SERVICE MODE(TBD)

Enter factory mode menu: press MENU + Numeric keys “1999” to enter factory mode.