Sony XBR-55X900H Service Manual page 66

2021/04/27 23:25:57 (GMT+09:00)
5.0 Key Switch Buttons Error
Side key buttons error
SAFETY NOTES SELF DIAGNOSTIC FUNCTION TROUBLESHOOTING
T R O U B L E S H O O T I N G
Check harness connection
between B-board and switch
module
OK
Change switch module
OK
Change harness between B-
board to switch module
harness
OK
Main device issue
Change B-board
SERVICE ADJUSTMENT
NG
Harness connection issue
NG
Switch module issue
NG
B-board to switch module harness
issue
DIAGRAM
66
HANDLING GUIDE
SYS SET