Sony XBR-55X900H Service Manual page 75

2020/06/27 06:31:32 (GMT+09:00)
5.0 Key Switch Buttons Error
Side key buttons error
SECTION 1
S E C T I O N 3
T R O U B L E S H O O T I N G
Check harness connection
between B-board and switch
module
NG
Change switch module
NG
Change harness between B-board
to switch module harness
NG
Main device issue
Change B-board
SECTION 2 SECTION 3
OK
OK
OK
SECTION 4 SECTION 5
Harness connection issue
Switch module issue
B-board to switch module harness issue
SECTION 6
75
SYS SET