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Flow Chart of Troubleshooting
9-29
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9-2-4. GSM900 Receiver
RX ON
AMP-50dBm
NO
Resolder
RFS100
,
L116
,
L121
Check Antenna
Switch Control
YES
PAM100
PIN17
≥
-70dBm
NO
Resolder or Change
PAM100
YES
YES
Check U103,
PAM100
END
F102 PIN1
≥
-70dBm
Check PAM100
PIN8
=L,
PIN9
=H
PIN10
=H
NO
Resolder or change
C105
YES
U103 PIN21,22
≥
-75dBm
Check F102
PIN8
,
PIN9
≥
-75dBm
NO
YES
Resolder or change
L111
,
L114
,
L115
Resolder or change
F102
YES
PAM100 PIN15
≥
-55dBm
Summary of Contents for GT-C3510
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