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8. Level 3 Repair
NORMAL CONDITION
Catch the channel?
Check component soldering
status L1064, U3000
8-4-38. GSM 850/900 TX
Yes
No
No
Check RFS1000
about
≥ 23dBm?
Check the ANT1001
Yes
Check C1005
≥ 23dBm
No
Resolder or change
RFS1000, C1005, C1004, L1001
Yes
Check F1000
≥ 23dBm
No
Resolder or change
F1000, L1008
Yes
Check component
soldering status ok?
PAM1000
Resolder or change
PAM1000
No
Receiver is OK?
Resolder or change
UCP5000
No
Yes
Yes
Resolder or change
L1064, C1086, L1063, U3000
No
END
Yes
Check component
soldering status ok?
L1062
Resolder or change
L1062, C1088, PAM1001