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5-2 Initial
Initial Failure
U302 pin 6 = "H" ?
Yes
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U401(EEPROM)
and data stored in it
END
5-2
No
Check and repair the important
signals of U400 as follows
The node
between R401 and C404
= "H" (RST)
R409 = "H"
(SIMPWDN_BOOT)
R428 = "H"
(GPIO4_MSIZE)
R429 = "L"
(GPIO2_EXTPROC)
Replace PBA
Flow chart of Troubleshooting and Circuit Diagram
No
Yes
No
Yes
No
Yes
No
Check U103
Resolder R409
Resolder R428
Resolder R429
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