TCL L50B2800, Service Manual

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Factory Test & Alignment Specification For MS08PA-LA Series (V1.0).Doc
Page 8 of 18
Make sure that Picture Preset is set to “VIVID ” mode, “ Contrast ” bargraph is set to maximum
(100%) and “ Active Backlight ” is set to “ Off ”.
Ensure that TV is in
Factory mode to access to ”White Balance” adjustment submenu
, then
scroll down to toggle off “ Pic. Enhance ” flag.
CMP YPrPb , R GB , CVBS_PAL Gain/Offset matrix offsets locations are relative to HDMI/DTV .
CVBS_SECAM and CVBS_NTSC Gain/Offset matrix offsets locations are relative to
CVBS_PAL.
Warm and Cool Tone are relatives to Normal mode.

“ Gain ” registers set need to be adjusted at 70IRE.

“ Offsets ”
registers set can be adjusted at 30IRE, but it’s not recommended to keep them
defaulted.
Note:

All matrix offsets locations can be individually fine-tuned.
The measured parameters should be mainly “ x ”, “ y ” coordinates.
Targets and Tolerances for all inputs
The “ Y ” peak luminance measurement at 100IRE is depending on achievable panel
performance and less important than saturation on high light. If necessary, “ Scaling Contrast ”
register can be adjusted.
The “ BlackLevel ” measurement need to be within 1% ±2 . If necessary, “ Scaling Brightness ”
register can be adjusted.
The White Balance alignment should be performed using a well calibrated and contact less
analyzer (ex: Minolta CA210 or CA310). The analyzer may not touch the screen surface, and
measurement must be performed in a dark environment keeping the probe(s) at 90+/-2° from the
panel center.
The result should fulfill TCL matching specification (Minolta CA210 reference with CH00):
MODEL COOL(x/y) NORMAL(x/y) WARM(x/y) ID
L32S4600 0.257/0.276 0.266/0.293 0.297/0.324 001
within below tolerances:

for Alignment: ± 0.003

for Measurement: ± 0.015
2.4. SHOP-END Test
At final process stage, it’s necessary to perform “ Reset shop ” before any packing to leave
Factory mode and restore User default presets.
This function is accessible by selecting “ Factory menu

SHOP init ”, then pressing RCU “ OK ”
key. Other faster methods are available on above enclosed SIACP requirements (rev. v3.9).
Appendix

“How to upgrade SW FLASH using Mstar tool”