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5-12
Flowchart No.4
LED does not light up
5V voltage supplied to connector CN100 15pin, 17pin on
FL board?
Check/replace the FL board flexible cable (MAIN
h
FL).
If not improved by replacement, replace the Main board.
Check/replace the FL board flexible cable (MAIN
h
FL).
If not improved by replacement, replace the Main board.
3.3V voltage supplied to connector CN100 on
FL board?
CN100 24pin Power button
CN100 26pin Blue HD
CN100 12pin HD
CN100 11pin HDMI
Does the LED on FR board light up?
No
Check LED peripheral parts on FL board.
Yes
Yes
Yes
Symptom improved if FR board is replaced?
Yes
Check LED peripheral parts on FR board.
CN100 10pin FL OFF
If faulty, replace the FL board.
No
Replace the FL board flexible cable (FL
h
FR).
If faulty, replace the FR board.
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