23
KVT-715DVD,725DVD/-B,735DVD
KVT-745DVD,765DVD,815DVD
No.
Adjustment
Measurement
Adjustment
Adjustment value
Measuring
item
point
part
instrument
12
R SUB
CN850 59pin
TEST mode
1. Connect the oscilloscope to 58pin and 59pin between GND
Oscilloscope
CONTRAST
(G OUT)
CH14
line.
CN850 58pin
2. It is adjusted so that red signal level bigger 0.1V
±
0.05V than
(R OUT)
green signal (for 9step signal).
13
B SUB
CN850 59pin
TEST mode
1. Connect the oscilloscope to 60pin and 59pin between GND
Oscilloscope
CONTRAST
(G OUT)
CH15
line.
CN850 60pin
2. It is adjusted so that blue signal level bigger 0.1V
±
0.05V than
(B OUT)
green signal (for 9step signal).
14
VCOM
CN850 39pin
TEST mode
Adjust the amplitude value so that VCOM square wave is
Oscilloscope
CH1
2.25V
±
0.05V
15
FLICKER
DISPLAY
VR203
1. Confirm there is no flickering (display mode : zoom).
Oscilloscope
(X35-4280)
2. If the flickering is recognized, adjust VR203 so that the flicker
Input signal : gray
level will be the minimum.
(30~50% white)
Input video signal : 10 step video signal (NTSC 1.0Vp-p)
Oscilloscope range : 500mV/DIV AC
Note : When the LCD ASSY or the touch panel switch ASSY is replaced, X14- and X35- Circuit, Touch panel and Start position is
adjusted together for test mode.
The definition of video signal and pedestal signal
negative 1 step
pedestal
negative pedestal
1 step
white
ADJUSTMENT
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TEL 13942296513 QQ 376315150 892498299