L0171WF3
9-3
Input: NTSC Color Bar Signal (with 1kHz Audio Signal)
WF11 ~ WF20 = Waveforms to be observed at
Waveform check points.
(Shown in Schematic Diagram.)
Pin 11 - 2 of CN321A
(LCD MAIN)
YOBI1-YOBI10
2V
20
µ
s
LP
1V
STH1
1V
20ns
CLKH
1V
10
µ
s
20
µ
s
WF11
Pin 1 - 10 of CN310A
(LCD MAIN)
WF12
Pin 12 of CN310A
(LCD MAIN)
WF13
Pin 14 of CN310A
(LCD MAIN)
WF14
Pin 18 of CN310A
(LCD MAIN)
LCD CBA
Measurement Point
CN311A
IC333
1
23
1
23
1
9
1
30
1
50
1
20
WF11
WF15
CN111B
CN112B
CN113B
CN310A
CN321A
23
1
23
1
9
1
CN101A
CN102A
CN103A
WF16
WF26
WF27
WF31
CAUTION!
Since the handling of CN310A,CN311A and
CN321A tends to lead to destruction easily ,
be careful of it enough. (especially CN321A.)
10
µ
s
B(0)-B(7)
G(0)-G(7)
R(0)-R(7)
2V
10
µ
s
WF15
Pin 21 - 24 , 26 - 29 , 31 - 34
, 36 - 39 , 41 - 44 , 46 - 49
of CN310A
(LCD MAIN)
VREF(0)
1V
WF16
Pin 3 of CN311A
(LCD MAIN)
20
µ
s
VREF(1)
1V
WF17
Pin 4 of CN311A
(LCD MAIN)
VREF(2)
1V
WF18
Pin 5 of CN311A
(LCD MAIN)
20
µ
s
VREF(3)
1V
WF19
Pin 6 of CN311A
(LCD MAIN)
20
µ
s
VREF(4)
1V
WF20
Pin 7 of CN311A
(LCD MAIN)
20
µ
s