Sharp LC-13SH1U Service Manual page 50

Pin 8 of CN311A
WF21
(LCD MAIN)
20µs
VREF(5) 1V
Pin 9 of CN311A
WF22
(LCD MAIN)
20µs
VREF(7) 1V
Pin 10 of CN311A
WF23
(LCD MAIN)
20µs
VREF(8) 1V
Pin 11 of CN311A
WF24
(LCD MAIN)
VREF(10) 1V 20µs
WF21 ~ WF32 = Waveforms to be observed at
Input: NTSC Color Bar Signal (with 1kHz Audio Signal)
Pin 12 of CN311A
WF25
(LCD MAIN)
20µs
VREF(11) 1V
Pin 17 - 20 of CN311A
WF26
(LCD MAIN)
VCOM 2V 20µs
Pin 16 of CN321A
WF27
(LCD MAIN)
5ms
STV1 1V
Pin 24 of CN321A
WF28
(LCD MAIN)
10µs
CLKV 1V
9-4
Waveform check points.
(Shown in Schematic Diagram.)
Pin 25 of CN321A
WF29
XDON 1V
Pin 26 of CN321A
WF30
STV4 1V
Pin 29 - 30 of CN321A
WF31
VCOM 2V
Pin 1 - 2 of CN401,CN402,
WF32
CN403,CN404
CN401
CN402
CN403
50V
CN404
(LCD MAIN)
20µs
(LCD MAIN)
5ms
(LCD MAIN)
20µs
(MAIN CBA)
10µs
L0171WF4