Location Of Components On The Main Board - Huawei E5331 Maintenance Manual

4

Location of Components on the Main Board

Take E5331 for example:
Z701 SAW FILTER
–W900MHz
Failure Symptom:
RF Transmitting Failure
Z702 SAW FILTER
–W850MHz
Failure Symptom:
RF Transmitting Failure
S3501
POWER BUTTON
Failure Symptom:
No power on
X4001 Crystal
No power on
Osillator,26MHz
Failure Symptom:
WiFi Failure
U4001 WIFI IC
Failure Symptom:
WiFi Failure
Z4101 Ceramics Filter
2450MHz
Failure Symptom:
WiFi Failure
U4102 RF Switch
Failure Symptom:
WiFi Failure
U3601 Voltage
Regulator
Failure Symptom:
RF Failure - WCDMA
U3501 PM
Failure Symptom:
No power on
X3501 Crystal
Units,32.768kHz
Failure Symptom:
No power on
U3801 Battery
Management IC
Failure Symptom:
Charge failure
2012-4-21
E5331 Maintenance Manual Basic Version V1.0
U703 SPDT
Failure Symptom:
RF Failure
Huawei confidential. No spreading without permission.
U801 U502 Duplexer
–W900MHz
Front End Module
Failure Symptom: Failure Symptom:
RF Failure RF Failure
Internal
U402 Duplexer
-W2100MHz
Failure Symptom:
RF Failure
U401 Power Module
–W900MHz
Failure Symptom:
RF Transmitting Failure
U501 Power Module
–W2100MHz
Failure Symptom:
RF Transmitting
Failure
Z501&Z401SAW FILTER
–W900MHz&W2100MHz
Failure Symptom:
TX failure
Z603&Z602SAW FILTER
–W900MHz&W2100MHz
Failure Symptom:
Weak signal
U101 RF Transceiver
Failure Symptom:
RF Failure
U901 Duplexer
–W2100MHz&W900MHz
Failure Symptom:
RF Failure
Z901&Z902 Diversity
Receive SAW FILTER
-W900MHz &W2100MHz
Failure Symptom:
RF Receiving Failure
TCXO301 TCXO,26MHz
Failure Symptom:
No power on
U3101 CPU
Failure Symptom:
No power on,
Others failure
U3201 FLASH
Failure Symptom:
No power on;
Others software failure
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