Huawei G510 Maintenance Manual page 38

G510 Maintenance Manual V1.0 INTERNAL
Figure 9-5 Fault identification process upon weak current
The U8825-1 fails to
be powered on.
Install a simulated battery on the
U8825-1, connect the U8825-1 to the
maintenance power, press the power key,
and observe the current.
The current is
weak.
N
Is the voltage provided
Check U201.
by the PM8029
normal?
Y
N
Is the output frequency of X301
Re-solder or replace
equal to 32.768 kHz or that of
X301 and U3101.
U3101 equal to 19.2 MHz?
Y
Return the U8825-1
to Huawei for repair.
2013-01-28
Huawei Confidential Page 38 of 96