Service manual

㄀ 8 义݅9 义
PRELIMINARY INFORMATION ----- SUBJECT TO CHANGE
Before adjustment, you must make sure the ADC status (only PC and YPP) is
“SUCCESS” and Color Analyzer has been calibrated. Only AV1, YPBPR, PC, HDMI 1
need to be adjusted. HDMI 1 should be the first.
a. Signal and generator
The pattern of the signal should be used are White (Chroma2329 pattern113) and
Grey (pattern 114).
The format of signal are respectively 720p for HDMI1 (Chroma2329 Timing 69),
PAL(Chroma2329 Timing 38) for AV1,1024×768@60Hz (Chroma2329 Timing 14) for
VGA and 720p (Chroma2329 Timing 79)for YPBPR
b. Steps of adjustment
1. Enter the factory menu-> White Balance, select source HDMI 1 and Normal
Temperature
2. Input grey signal in 720p format
3. Change R OFFSET and B OFFSET to make sure the value of color
coordination equal to (x=280+/-5,y=290+/-5).
4. Input white signal in 720p format
5. Change R Gain and B Gain to make sure the value of color coordination equal
to (x=280+/-5,y=290+/-5).
6. Repeat step 2~5 until both of the value of color coordination of white and grey
equal to (x=280+/-5,y=290+/-5).
For COOL and WARM color temperatureˈjust repeat step 2~5. The color
coordination we recommend for COOL and WARM color temperature is respectively
(270+/-5, 270+/-5) and (300+/-5, 305+/-5).
After the adjustment of HDMI I, you can switch to other source AV1, PC and
YPbPr and repeat step 1~6 to do the WB adjustment.
Note: For some small size LED panel, the color coordination of spec is not
280/290, and we recommend you adopt the value from panel specification.
5. ADC Calibration and White Balance Adjustment (automatic)
The process of adjusting ADC and White Balance automatically is out of the
range of this file. Please refer to the relevant technical file of HuiZhou factory of TCL
6. Chip list of software programming before SMT
Following chips must be programmed before SMT by ALL-11 or other tools.
Position Chip type Software description
1 U203 Flash Device System Software
2 U204 E2PROM HDMI HDCP Key