Motorola i897 - Page 73

TROUBLESHOOTING: Digital Analysis Test
Digital Analysis Test (Continued)
Replace USB
switch,
U1001B9
Comm Check
Pass?
Replace EMU
IC, U900
Comm Check
Pass?
Check for defective
Zeus, U804
Yes
Yes
No
No
C
A
Replace FX2,
U1000B6
B
Check crystal,
Y1000 freq
XTALIN
24MHz?
Replace
Y1000
D
Possible failures: FX2
firmware corruption (try
re-flash phone), I2C
bus, Zeus
FX2 replaced?
Yes
Yes
No
No
6880401P59-O
73