Sony HDVF-C30W Maintenance Manual page 21

(2) LCD drive pulse signal system check
Connect an oscilloscope to TP28, TP29, TP53, TP54, TP87, and TP88 of the EX-909 board and confirm
that the following signal timings are maintained.
108 ns
54 ns
27 ns
TCK
(TP29)
BCK
(TP29)
*1
SP1/4
(TP53/TP54)
DATA
*2
LS
(TP28)
DIO
(TP87)
FX
1 H
(TP88)
*1 : This pulse appears at the SP1 terminal during the normal display and at the SP4 terminal during
the inverted display once every 1H period.
*2 : Data is fetched every two pixels and are assigned to the upper- and lower-side drivers in the LCD circuit.
HDVF-C30W
1 H
FIRST DATA
1 V
LAST DATA
1-15 (E)