Location Of Components On The Main Board - Huawei U8350 Maintenance Manual

4
Z1101 Varistor,
ESD+EMI Noise Filter
Failure symptom:
Earphone failure.
U1101 Earphone
Audio Power
Amplifier
Failure symptom:
Earphone failure.
U1701 AUDIO
Chip-FM Stereo Radio
SI4708
Failure symptom:
FM failure.
U601 FLASH, MCP
Failure symptom:
Can't power on.
Software failure.
U401 CPU,
WCDMA/GSM
Dualmode
BASEBAND
PROCESSOR
MSM7225
Failure symptom:
Can't power on. No
signal, weak signal.
Data communication
failure, etc.
2011-05-18
U8350 Maintenance Manual Basic Version V1.0

Location of Components on the Main Board

U502 CMOS-8-D
Triggering Device
Failure symptom:
No power on. RF failure.
U901 Oscillating Motor
Failure symptom:
No vibration.
Huawei confidential. No spreading without permission.
Internal
J1101 IO Connector
Failure symptom:
Charging failure. Data
communication failure.
J1102 Earphone
Connector
Failure symptom:
Earphone failure.
D1306 Transient
Suppressing Diodes
Failure symptom:
Touch panel failure.
U4102 SAW Filter
Failure symptom:
GPS failure.
U4101 RF LNA
Failure symptom:
GPS failure.
U4103 SAW Filter
Failure symptom:
GPS failure.
Z4304 SAW Filter
Failure symptom:
W2100MHz weak
signal.
U202 LDO,3.3V
Failure symptom:
Data communication
failure.
U201 Power
Management IC
Failure symptom:
Can't power on.
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