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Flow Chart of Troubleshooting
9-33
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PAM100 CHECK
pin#17
≥
-
55
dBm?
9-12-6. WCDMA900 RX
NORMAL CONDITION
catch the channel?
NO
CHECK
ANT
contact
YES
NO
RFS100, C104, L102
re-solder or change
YES
PAM100 CHECK
pin#18
≥
-
55
dBm?
NO
PAM100
re-solder or change
YES
DUP200 CHECK
pin#5
≥
-
55
dBm?
NO
DUP200,C203,L201
re-solder or change
YES
L200
re-solder or change
Rx Path CHECK
U102 pin#42
≥
-
55
dBm?
NO
YES
OSC CLOCK
CHECK
U102 pin#17,18
freq:26MHz?
NO
OSC100
re-solder or change
YES
U102 CHECK ?
NO
U102
change or re-solder
YES
UCP300
CHECK!!