Elenberg LTV - 4231, Service Manual

Page: 28 / 52

KLXXCSXXQ - TS
数量 分区 更改 第
12
4.3.5 After turning on the power, if blank screen appears (no back light lamp), just press
POWER button several times, if blank screen still there 。
4.3.6
4.3.6 Check if the voltage of every power supply is normal.
4.3.7
4.3.7 Check if the crystal oscillator Z301 (14.318180MHz) oscillate or not, and oscillate
frequency is right or not.
4.3.8
前
4.3.8 Back light control signal (BKLON) of XS802 has high level (above 3V)
or not, if not, check whether fault soldered or short circuit happened 。
4.4
白平衡
4.4.1
接收 信号
AV
和
PC
信号，
5
尼
特 ，亮
90
尼特 。
4.4.2 User RGB
菜
B-R 0-63
默
32
B-G 0-63
默
32
B-B 0-63
默
32
C-R 0-205
默
128
C-G 0-205
默
128
C-B 0-205
默
128
4.4.3
使
X=0.285
，
Y=0.293
），
4.4 White calibration adjustment
4.4.1Receive black or white signal under AV or PC mode, adjusting brightness and contrast to set the
brightness to 5 Nit in dark area and 90 Nit in bright area.
4.4.2Adjust white balance. Enter factory menu, select User RGB Menu,
Adjust B-R 0-63 default
：
32
B-G 0-63 default
：
32
B-B 0-63 default
：
32
C-R 0-205 default
：
128
C-G 0-205 default
：
128