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5-2 Initial
Initial Failure
U410 pin 4 = "H" ?
Yes
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U504(EEPROM)
and data stored in it
END
5-3
No
Check and repair the important
signals of U501 as follows
The node
between R505 and C509
= "H" (RST)
R509 = "H" (BOOT)
R526 = "H" (MSIZE)
R528 = "L" (EXTPROC)
Replace PBA
No
Yes
No
Yes
No
Yes
No
Flow chart of trouble shooting
Check U505
Resolder R509
Resolder R526
Resolder R528
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