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Chapter 4
22
Fail to light up
Check
Lamp
Look up user
manual ,and
follow indica-
tive action
Check
Fan
Replace Lamp
Check
Thermal
Sensor
Replace Ther-
mal Sensor
Check
LED indication
Replace Fan
OK
NG
OK
OK
OK
NG
NG
NG
Replace Main
Board
NG
Check
Main Board
No Volume
Check
Speaker
Connector
Speaker
Connector
Become loose
Check
Speaker
Replace
Speaker
Check
Main
Board
Replace Main
OK
OK
OK
NG
NG
OK
Replace
Ballast
NG
Check
Ballast
Check
Top cover’s cable
Replace cable
or connect the
cable back
OK
NG