Sony XR-55X90K Service Manual page 90
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Also See for XR-55X90K:
- Service manual (90 pages) ,
- Setup manual (51 pages) ,
- Original manual (43 pages)
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TROUBLESHOOTING
5.0 Key Switch Button Error
Key button error
Check harness
NG
connection between Main
board and Receiver
board
OK
OK
Change harness between
Main board to Receiver
board
NG
OK
Change Receiver board
NG
Change Main board
Main device issue
Harness connection
issue
Main board to Receiver board
harness
issue
Receiver board issue
90
SYS SET
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