Components On The Pcba - Huawei U8950 Maintenance Manual

U8950 Maintenance Guide V1.0
Figure 4-1 and Figure 4-2 show the components on the top and bottom sides of the PCBA.
Figure 4-1 Components on the PCBA top side
Flash shrapnel
Faults caused if
damaged: Flash fault
U2101 RF DCDC
Faults caused if
damaged:
RF PA fault
U3302, U4202, U3401
RF PAs
Faults caused if
damaged:
RF failure
J3201 coaxial cable
connector
Faults caused if
damaged:
No or weak RF signals
J1403 SIM card
connectors (dual-
card)
Faults caused if
damaged:
SIM card detection
failure
J902 battery
connector
Faults caused if
damaged:
Startup failure due to
power outage
2012-10-22
4
J1601 TP BTB
J1006 board connector
connector
Faults caused if
Faults caused if
damaged:
damaged: Touchscreen
Proximity sensor fault
fault
Huawei Proprietary and Confidential

Components on the PCBA

J1703 headset jack
Faults caused if
damaged: Headset
fault
4 Components on the PCBA
Rear camera
Faults caused if
damaged:
Camera fault
J1402 microSD card
slot
Faults caused if
damaged:
microSD card detection
failure
Bluetooth/Wi-Fi/FM
Faults caused if
damaged:
Bluetooth, Wi-Fi, or FM
failure
NFCPOGO pin
Faults caused if
damaged:
No NFC function
C245 button capacitor
Faults caused if
damaged:
System time inaccurate
after the battery is
swapped
U4401NFCchip
(available for NFC
version only)
Faults caused if
damaged:
NFC function fault
SIM card connector
Faults caused if
damaged:
Call-making failure due to
SIM card detection failure
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