Huawei Y511-U030 Repair Manual page 41

XXXX The basic version Repair Manual
Current is too
small, about
10mA
Check the 26MHz
master clock signal
are normal
N
To replace or re
Y
welding of 26MHz
crystal, CPU
Check the
32.768Khz clock
signal are normal
N
replace or re weld
the side the clock,
CUP
Y
2013-09-25
V1.0
Boot failure using external
power to supply PCBA,
observe the change of the
current
Current basic
normal, about
20mA
Check VDD-CORE, VDDIO,
VDD MEM, VRF the voltage
is normal
Y
Check CPU, Flash has no
weld and damage
Y
Re download the software
END
华为机密，未经许可不得扩散
Current large
hundreds of mA
Inspection of all
VBAT related
circuit device,
change adverse
N
welding of CPU
N
Unable to download
N click download bad
Y
internal public
replace or re
replace or re
welding of
CPU. FLASH
repair process
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