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Flow Chart of Troubleshooting
9-3
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9-1-2 : Abnormal initial operation (4.0V voltage source)
Press PWR KEY
TP_590
is exist?
Check OSC501 and
neighboring circuits
C576 voltage level
= 1.1~1.3V?
Check L507 and neighboring
circuits
NO
NO
YES
YES
C581 voltage level
= 1.8V?
Check L509 and neighboring
circuits
NO
YES
TR401 pin3
output is asserted?
U301 pin4
output is asserted?
Check TR401
and neighboring circuits
Check U301
and neighboring circuits
if necessary change the board
NO
NO
YES
YES
END
Содержание GT-I8910
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