User Guide

5-3 Flow chart of trouble shooting and Circuit Diagram
5-2 Initial
Initial Failure
Check and repair the important
signals of U108 as follows
END
No
U103 pin 4 = "H" ?
The node
between R162 and C183
= "H" (RST)
No
Check U112
R114 = "H" (BOOT)
No
Resolder R114
Yes
R673 = "H" (MSIZE)
No
Resolder R673
Yes
R165 = "L" (EXTPROC)
No
Resolder R165
Yes
Replace PBA
Check all the other connection
by Test S/W
Check the circuit around LCD
Check the circuit
around U107(EEPROM)
and data stored in it
Yes