TCL-Thomson Electronics R&D Center (Shen
’
Zhen Lab)
Page 4 of 12
TCL-Thomson Electronics
These drawings and specifications are the property of TCL-Thomson Electronics and shall not be reproduced or copied or
used as the basis for the manufacture or sale of apparatus or devices without permission.
2. Alignment procedures:
2.1 B+ voltage adjustment
2.1.1
Needn’t adjust B+ voltage on the line.
2.2 RF AGC adjustment
2.1.2
Input 58dB grey scale signal.
2.1.3
Press key “4” to enter RF AGC adjustment.
2.1.4 Press “OK” key to auto adjust RF AGC, also can adjust “RF AGC” by “
Vol
-/
Vol
+”
key until the letter change from “INACTIVE” to ”ACTIVE”.
*
The others use default value.
2.3 Crystal oscillator frequency adjustment
2.3.1 Crystal oscillator frequency adjustment with NICAM
a. Apply PAL BG NICAM signal with good reception quality.
b. Enter factory mode, press “game” key , then press “
Vol
+” key to adjust “DCXO
Auto”, until it displays “OKEY”.
2.3.2
Crystal oscillator frequency adjustment without NICAM
a. Input PAL color bar signal.
b.
On factory mode, press “0” to adjust “DCXO Auto” until it steady at 128.
2.4 Screen & Focus voltage adjustment
2.4.1 Screen voltage adjustment
a.
Press “MUTE” key on the remote control and the screen will become a
horizontal line, here vertical stop vibration. Then adjust the “screen” VR on
the flyback until the horizontal line can just be seen (minimum visible
intensity).
2.4.2
Focus voltage adjustment
a.
Input cross hatch pattern signal.
b.
Adjust the “focus” VR on the flyback until the screen becomes clear.
2.5 White balance adjustment (NORMAL)
2.5.1 Choose Black and White pattern signal (PAL).
2.5.2 On factory mode, press “1” key enter white balance adjustment.
2.5.3 Measure the dark side of the picture with a color analyzer adjust RED and GRN
until the data on the analyzer become x=274+8, y=280+8.
2.5.4 Measure the bright side of the picture. Then adjust WPR, WPG and WPB until
the data on the analyzer become x=274+8, y=280+8.
2.5.5 Repeat step 1 and 2 until you get right color on both dark and bright side of the
screen.
Remark
:
1. When adjusting, RED
、
GRN are used to adjust black balance and WPR
、
WPB
、
WPG are used to adjust white balance .
2. On product line, the item which can be auto adjusted by auto test
equipment , its data according to auto adjust value.
3. White balance address please meet the fourth part at page 10.
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