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Level 3 Repair
8-12
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8-3-2. Initial
Initial Failure
Yes
nON_SW(R463)
="High
→
Low"
and PON_RESET_N_PMIC(D400)
= "Low
→
High"?
Check U502 (crack, open, etc)
Yes
No
There is 32.768KHz wave forms
at OSC501
Replace OSC501
R520>= 1.8V?
Check UCP400 and related parts (short, crack,
etc)
Replace OSC500
There are 19.2MHz wave forms
at OSC500
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
END