H a n n S t a r D i s p l a y C o r p .
Document Title
HQ171D_XY _HSM
Page No.
49
49 / 87
Document No.
Revision
07/08/09
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White screen
White screen
Measure Q708 base
is high level?
X401 oscillate
waveform is normal
Check Q706, Q704 is
broken or CN101 solder?
Check Correspondent
component.
Check Correspondent
component.
Replace X401