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F.
BAT_FAULT# = 3.3V
Please check
the floating and diode reverse issue on the component (C337,
U50) .
6.1.2 CP
U BGA
If the device still didn't work after item 1 trace, we can measure the signal
T12 ( NAND_CS# ) should be get the high-low transition by oscillate
scope. Check the data response from TP28 (SD15).
maybe the CPU BGA issue or Chip defective. We can change the CPU to
im
prove the situation. Accordi
which replace in time will be failure for the work.
6.1.3
NAND Flash
In Item 2, if the d
try to re-flash the data to NAND flash via JTAG.
華
碩
電
腦
華
碩
電
腦
ata can't response from TP28 ( SD15 ), in my opinion is
Figure 1. PMU
GTC ■ Service Manual
ng the manufacture experience for the CPU
13
U33,
If the answer is well it
ASUS Propriet
ary
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