Level 3 Repair
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8-44
Check C116
≤
-65dBm ?
8-3-18. WCDMA Band2 / GSM1900 RX
WCDMA B2 / GSM1900
Receiver is O.K?
Resolder or change
UCP300
END
YES
NO
CONTINUOUS RX ON
RF INPUT : 9880CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check the voltage at
{C150= VBAT_RF ?}
& {C158, C159 C160 =
V_BAT?}
& {C149, C170 = 2.85V ?}
& {C145, C165 = 2.65V ?}
& {C148, C172 = 1.8V?}
& {C166, C171, C147) = 1.2V?}
Check the Voltage at
C103 = V_BAT?
Check component
soldering status OK at
F100
CHECK soldered
CN100, C116, L108, C119
Resolder or change
U101, C103
Resolder or change
F100
Resolder or change
U104
Check the freq. at C137
: 26MHz ?
Change or resolder
OSC100
Check L102, L105
≥
-65dBm ?
Resolder or change
L102, L105
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check F100 PIN 16, 17
≥
-65dBm
Resolder or change
F100
NO
YES
Summary of Contents for GT-P3100
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