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Flow Chart of Troubleshooting
10-3
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10-1-2. System Initial
Initial Failure
The pin #G11 of U300 =
1.8V and
the pin #J12 of U300 =
2.8V ?
Check the
U300
(if it has some problem, it is to be replaced.)
Yes
No
Is the pin #K9 of U300
"Low
→
High" ?
Yes
No
Check the
U300
(if it has some problem, it is to be replaced.)
There is 32.768kHz wave
forms at the C216 and
C217
Yes
No
Check the
UCP200
The voltage is "High" at
the C313,C314,C310
Check the
U300
LCD display is O.K
No
Yes
Yes
Check the LCD part
No
Sound is O.K
Yes
No
Check the Audio part
END
Yes
Summary of Contents for SGH-B300
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