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5-2 Initial
Initial Failure
U452 pin 4 = "H" ?
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U304(EEPROM)
and data stored in it
END
Flow chart of trouble shooting
No
Check and repair the important
signals of U414 as follows
The node
between R312 and C325
= "H" (RST)
R348 = "H" (BOOT)
R440 = "H" (MSIZE)
R438 = "L" (EXTPROC)
Replace PBA
No
Yes
No
Yes
No
Yes
No
Check U307
Resolder R348
Resolder R440
Resolder R438
5-2
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