H a n n S t a r D i s p l a y C o r p .
Document Title
HW191A _XY _HSM
Page No.
39
39 /
72
Document No.
Revision
07/08/03
The information contained in this document is the exclusive property of HannStar Display Corporation. It shall not be
disclosed,distributed or reproduced in whole or in part without written permission of HannStar Display Corporation.
11. Maintainability
11.1 Equipments and Tools Requirement
1. Voltmeter.
2. Oscilloscope.
3. Pattern
Generator.
4. DDC Tool with Compatible Computer.
5. Alignment
Tool.
6. LCD
Color
Analyzer.
7. Service
Manual.
8. User
Manual.
11.2 Trouble Shooting
11.2.1 Main Board
No power
No power
Press power key and look
if the picture is normal
Please reinsert and make sure
the AC of 100-240 is normal
Measure U201 PIN2=1.8V ;
Reinsert or check the
Adapter/Inverter
section
X401 oscillate waveforms
are normal
Check CN201 or replace
U201,
Check U501
Replace X401
OK
OK
OK
NG
NG
NG
NG
Replace U501
Replace U401
OK
NG
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