LG LST-3100A Service Manual page 28

(E)
YES
Are IIC SCL and SDA signals output from
the pin 60, 61 of IC109 ? Fig. 06 & Fig. 07
YES
A re IIC SCL and SDA signal input to
the pin 1, 2 of IC108 from IC109 ?
YES
Are IIC SCL and SDA signals output
from the pin 6, 7 of IC108?
Fig. 06
NO
NO
Check IC108, IC109
NO
Fig. 07
3-19
Check IC109
Check IC108, 105,