Table of Contents
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Customer Service
Service Manual
Key light can't work
Key light can't work
Reassemble FPC
Expect bar model
Use multimeter to check
NO
Check if circuit is
voltage of LED is OK or not
broken
YES
YES
Upgrade software
Problem solve
NO
NO
Use external power (2.8V) to
Change LED
check LED can work or not
YES
Changed or re-solder CPU MT6250
Problem solve
28
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Table of Contents
