Sony KD-43X7 F Series Service Manual page 133

4.13 CEC Force LA = 0
1) Go to "CEC FORCE LA=0" and Press "" or "" button to select '0' or 'A'
2) After select the option that you wish, press "Home" to confirm the
selection.
CEC_Force_LA=0
Data : [0/A] Default : 0
Purpose : To avoid CEC conflict for Non CEC compliant
device.
Usage: When market claim happen such as Bravia Sync
malfunction or no ARC sound happen, due to HDMI device
make CEC conflict, then Service side is required to change
this service register from "0" to "A"
Remarks :
1) This data is not changed by software update or AC
off/on, only change from service menu.
2) Need to turn AC off/on after change setting in order
algorithm to take effect.
Option
0 (default) The TV perform CEC poling.
The TV skip CEC poling
A
(Force set TV LA = 0)
Execution Effect
133
SYS SET