HannStar HQ171D Service Manual page 48

H a n n S t a r D i s p l a y C o r p .
Document Title
Document No.
No picture (LED orange)
The button if under
control
Measure U702 PIN2=3.3V;
D701(-)=1.8V
X401
waveform is normal
Check HS/VS from
CN405 is normal
Replace U401
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HQ171D_XY _HSM
No picture
NG
OK
OK
oscillate
NG
OK
NG
OK
X401 oscillate
waveform is normal
OK
Check reset circuit of
U401 is normal
OK
Replace U401
NG
Replace U702
Replace X401
Check Correspondent
component
Page No. 48 48 / 87
Revision
07/08/09
NG
Replace X401
NG Check Correspondent
component