TCL L65P8M Series, Service Manual, Page: 19 / 70

Test and Alignment Specification for RT2851 Series (v0.01).docx
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Cloning usage.
First you need to enable Factory Key. After that selecting“
Factory menu

WARM UP ”, pressing RCU “ OK/► ” key
and then leaving Factory menu by pressing “ Exit ” key. To release/disable Burn-in mode, press the menu button on
the TV panel. Other faster methods via UART/IR commands are available on enclosed SIACP requirements (rev.
v8.31).
2.3.White Balance& Automatic Gamma correction
For the white balance & automatic gamma correction, we only need do one of them based on the value of
Align_mode in PDM system or the method gave by AOE or R&D.
The detail instruction of Align_mode is as below table:
Prop Name Description Value
Align_mode WB alignment or
Auto Gamma correction 0 -- > WB alignment
1-- > Gamma correction

White Balance alignment (Golden sample)
As some color coordinates discrepancies can be noticed from panel batches to others, it may necessary to perform
slight touch-up.
For Color temperature adjustment, switch TV on leading HDMI input where should be connected suitable generator
providing following format 1280x720p@60Hz test pattern. A 32 steps grey scale is recommended to assess relevant
colorimetry tracking and low/high light saturation points.
Ensure that TV’s picture enhance is off.
Ensure that TV is in
Factory mode to access to” White Balance ” adjustment submenu
.
WB Normal is the first mode which is adjusted in HDMI source
，
the next are HDMI warm and cool mode.
Warm and Cool Tone are relatives to Normal mode.WB adjust need to fix default G Gain .Offset registers needn’t to
be adjusted.

“ Gain ” registers set need to be adjusted at 70IRE.
Note: The operation must enable factory “P” mode
￭
Automatic Gamma correction
Gamma correction, or often simply gamma, is the name of a nonlinear operation used to encode and decode