Sony XR-55A75L Service Manual page 138

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TROUBLESHOOTING
6.4 Built in Mic Malfunction
Built in mic doesn't work
Check Mic switch
OK
Check harness connection
between B-board
and H-Board
OK
Change H-board
NG
Change B-board
NG
Turn on Mic switch
NG
Connect properly
OK
Change FFC Cable
NG
between B-board and
H-board
138
FS / FS2 / FSL2
B-board
BM5STY
H-board
HY1 / HY2
Bboard
FFC 25P
H-board
138
SYS SET

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