Sim Card Failure - Huawei U8510-1 Maintenance Manual

9.6 SIM Card Failure

Reference Figure 9-4
2011-05-28
U8510-1 Maintenance Manual Basic Version V1.0
SIM card failure
Check whether
SIM socket J1401 is normal？
Y
Check whether
Z1401 is normal?
Y
Replace the U401
Z1401 ESD_EMI Filter
J1402
Figure 9-4
Huawei confidential. No spreading without permission.
Re-solder or
N
replace J1401
Replace the
N
Z1401
/
J1401
VDD Test
U201
J1402- pin4
Internal
2.8V
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