Changhong Electric PT4216, Service Manual, Page: 30 / 62

30
5.3
、
RF input full color stripe signal, the waveform of I²C bus clock signal UOCIII_SCL, the 98
th
pin of
U201,the 11
th
pin of U5,the 4
th
pin of main tuner UT920, the 4
th
pin of sub tuner UT921,the 1
th
pin of
XP926 is like this:
5.4
、 RF input full color stripe signal, the waveform of I²C bus clock signal UOCIII_SDA, the 99
th
pin of
U201,the 14
th
pin of U5,the 5
th
pin of main tuner UT920, the 5
th
pin of sub tuner UT921,the 2
th
pin of
XP926 is like this: