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5-2 Initial
Initial Failure
Downloading SW is OK ?
(Is CSROM signal OK ?)
Yes
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U617(EEPROM)
and data stored in it
END
Flow Chart of Troubleshooting and Circuit Diagrams
No
After power on,
check and repair the important
signals of U618 as follows
The node
between R661 and C712
= "H" (RST)
R348 = "H" (BOOT)
R440 = "H" (MSIZE)
R438 = "L" (EXTPROC)
Replace PBA
No
Yes
No
Yes
No
Yes
No
Check the circuit
related to reset
Resolder R348
Resolder R440
Resolder R438
5-3
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