Maintenance Procedures For Receiving Failure; Maintenance Procedures For Wcdma Receiving Failure - Huawei Mediapad S7-PRO Maintenance Manual

9.13 Maintenance Procedures for Receiving Failure

9.13.1 Maintenance Procedures for WCDMA Receiving Failure

2012-07-20
S7-PRO Maintenance Manual (Basic Version V2.1)
Power the board
on
Check whether the antenna switch
(U46) and the WCDMA receive
channel work normally
Yes
Check whether the input and
output signals of duplexers
(U20, U41, U31, U21, and
U32) are normal
Yes
Check whether
QTR8615 (U23) works
normally
Yes
End
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Maintenance procedures
No
Check the input signal, output signal,
logic control signal, and power supply.
If any exception is found, replace U46
No
Y
Replace U20, U41 U31, U21, and U32
Y
No
Check the power supply for U23. If any
exception is found, replace U23
INTERNAL
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