Earphone&Tv Out Failure - Huawei U8800 Maintenance Manual

9.10 Earphone&TV OUT Failure
Reference Figure 9-7
2011-03-21
U8800 Maintenance Manual Basic Version V1.1
Earphone failure
Check whether J801 is normal?
Y
Measure whether the D801 is
normal?
Y
Measure whether the Z801 is
normal?
Y
Replace the sub_PCB, whether it
is normal?
N
Measure whether voltage of the
U3701&U801 is normal?
Y
Replace the U201
Huawei confidential. No spreading without permission.
N Replace the J801
N Replace the D801
N Replace the Z801
Y End
Replace faulty
N
components
Internal
Page 45 of 61