57
5.4 LED backlight debug flow
:
LED driver Debug
Check Net
19V_BLD is
19V?
Replace FB36
FB36 is
open?
BD4 is damaged?
BU3 is damaged?
Replace BU3
Check U12 works
END
N
Y
Y
N
Y
N
Replace BD4
Backlight on?
Y
N
BR31 is open?
Replace BR31
Y
N
Open BR67
Y
N
Check BU5 pin5
is high ?
Check NET BL_CTRL
level is high?
Reassemble BR67
Y
N
Y
Y
N
Replace BU5
Summary of Contents for HS244HQ
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Page 37: ...37 Audio Gaming ...
Page 38: ...38 OSD System ...
Page 39: ...39 Information Save settings to ...
Page 40: ...40 c Icons introduct d Item page status 2 3 2 Key operation ...
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Page 44: ...44 2 7 OSD Menu Tree ...
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Page 46: ...46 3 Exploded Diagram ...
Page 66: ...66 11 FRU Field Replaceable Unit List ...
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