Huawei U8500 Maintenance Manual page 11

J1102 Earphone Jack
Failure Symptom:
Earphone no voice;
FM failure.
J1201 BTB Connector
Failure Symptom:
LCD display failure
J1401 BTB Connector
Failure Symptom:
Can not identify SIM/ TF
card, Wifi/BT failure.
U1401 Semiconductor
Sensor
Failure Symptom:
Compass function failure
U3801 WCMDA/GSM
Radio Transceiver
Failure Symptom:
No signal; weak signal;
can't register network.
U3302 Power Module
1920~1980MHz
Failure Symptom:
Can't register W2100
network
U3501 Power Module
Failure Symptom:
Can't register GSM
network
J1301 BTB Connector
Failure Symptom:
Keypad failure,
Touch Lens failure,
NO Vibration.
2010-12-21
U8500 Maintenance Manual Basic Version V1.1
Huawei confidential. No spreading without permission.
Internal
J1101 Micro_B Type
Failure Symptom:
;
Can't charge
Can't communicate with PC
U201 Power Management
IC
Failure Symptom:
Can't power on
J1002 Camera
Failure Symptom:
Camera function failure
U601 FLASH
Failure Symptom:
Can't power on;
software failure.
U401 WCDMA/GSM
Dualmode BASEBAND
PROCESSOR
Failure Symptom:
Can't power on
U3401 Power Module
824~849MHz
Failure Symptom:
Can't register W850
network
U3202 RF Switch
Failure Symptom:
No signal; weak signal;
can't register network.
J1501 Battery Connector
Failure Symptom:
Can't power on
Page 11 of 62