Table of Contents
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Chapter 5
Trouble Shooting
No picture (LED orange)
No picture
OK
NG
Check key board/IR board
Change key board/IR board
OK
NG
Check 24V power supply
Check the power supply circuit
OK
NG
Check main board Standby power supply
Change U152
OK
NG
Check U400
Change U400
OK
NG
2
2
Check I
C bus
Check I
C communication
33
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