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Level 3 Repair
8-8
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8-3-2. Initial
The pin #12, #13 of U304 =
swing properly 1.8V and 0V?
Initial Failure
check U304 and UCP300 and related parts (short,
crack, etc)
END
No
Yes
PM_PWRON_N(R803)
="High
→
low"
and SYS_nRESPWRON (C829) =
"low
→
High"?
Yes
Check U807 (crack, open, etc)
(if U807 has some problem, it is to be replaced)
Yes
No
There is 32.768KHz wave forms
at OSC300 and OSC801
Replace OSC 300 and OSC801
C325 >= 1.8V?
Check UCP300 and related parts (short, crack,
etc)
Replace OSC 800 and OSC100
There are 26MHz wave forms at
OSC800(C800) and OSC100
(C185)
LCD display OK?
Sound is OK?
Check the LCD part (short, crack, etc)
Check the Audio Part (short, crack, etc)
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes