Location Of Components On The Main Board - Huawei U8800 Maintenance Manual

4

Location of Components on the Main Board

U3201 RF Switch
GSM&WCDMA
Failure symptom:
RF transmitter failure,
RF receiver failure
U3304 Duplexer-
WCDMA2100MHz
Failure symptom:
RF transmitter failure,
RF receiver failure
U3404 Duplexer-
WCDMA2100MHz
Failure symptom:
RF transmitter failure,
RF receiver failure
U3402 Power module
-WCDMA900MHz
Failure symptom:
RF transmitter failure
Z3401 TX Filter-
WCDMA900MHz
Failure symptom:
RF transmitter failure
Camera-inner
Failure symptom:
Camera failure
U3302 Power module
–WCDMA2100MHz
Failure symptom:
RF transmitter failure
J202 FPC
Connector-Power key
Failure symptom:
No power on
U601 Color LED
driver chip
Failure symptom:
LED failure
2011-03-21
U8800 Maintenance Manual Basic Version V1.1
J1102 IO Connector
Failure symptom:
Charge failure,
Communication failure
U3501 Power
module-GSM
Failure symptom:
RF transmitter failure
U3301 TX Filter-
WCDMA900MHz
Failure symptom:
RF transmitter failure
D601&D603 Lighting
Diode
Failure symptom:
LED failure
Huawei confidential. No spreading without permission.
MIC1
Failure symptom:
Transmitting voice
failure
U4101&Z4101 RF
LNA and Filter
Failure symptom:
GPS function failure
Internal
X401Crystal-19.2MHz
Failure symptom:
No power on,
RF transmitter failure,
RF receiver failure
X402 Crystal 32.768
KHz
Failure symptom:
No power on
U1701 FLASH
Failure symptom:
No power on,
RF failure
U201 Power
Management IC
Failure symptom:
No power on,
Charge failure
X701 Crystal
24.576KHz
Failure symptom:
No power on
U1201 LCD backlight
Chip&Module
Failure symptom:
Backlight failure
J4204 WiFi Connector
Failure symptom:
WiFi failure
U1401 Semiconductor
Sensor-Accelerometer
& Compass
Failure symptom:
Accelerometer&
Compass function
failure
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