H a n n S t a r D i s p l a y C o r p .
Document Title
HG171A_XY _HSM
Page No.
43
43 /
65
Document No.
Revision
08/09/09
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White screen
White screen
Measure Q404 base
is low level?
X401 oscillate
waveform is normal
Check Q404, Q405 is
broken or CN403 solder?
Check Correspondent
component.
Replace PANEL
Check Correspondent
component.
Replace U401
OK
OK
OK
Replace X401
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal