Level 3 Repair
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Confidential and proprietary-the contents in this service guide subject to change without prior notice.
8-44
Check C139
≤
-65dBm ?
8-3-19. WCDMA Band8 / GSM900 RX
CONTINUOUS RX ON
RF INPUT : 3013CH
AMP : -50dBm
NORMAL CONDITION
catch the channel?
Check the voltage at
{C169 = VBAT_RF ?}
& {C168 = 2.85V ?}
& {C164 = 2.65V ?}
& {C170 = 1.8V?}
& {C171 = 1.2V?}
Check the Voltage at
C142 =VOUT_CHARGER
Check component
soldering status OK at
F100
CHECK soldered
RFS100,L101,C139
Resolder or change
U106, C142
Resolder or change
F100
Resolder or change
U101,C164,C168,C169,C170,C171
Check the freq. at C150
: 26MHz ?
Change or resolder
OSC100
Check L107, L110, L108
≥
-65dBm ?
Resolder or change
Check L107, L110, L108
WCDMA Band8 / GSM900
Receiver is O.K?
Resolder or change
UCP300
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check F100 PIN 22, 23
≥
-65dBm
Resolder or change
F100
NO
YES
Summary of Contents for GT-N8000
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