
Level 3 Repair
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8-45
Check C1023
≤
-65dBm ?
8-3-19. GSM1900/ WCDMA Band2 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
{C1057 = VBAT_RF ?}
& {C1056 = 2.85V ?}
& {C1054 = 2.65V ?}
& {C1058 = 1.8V?}
& {C1059 = 1.2V?}
Check the Voltage at
C1014 = 2.85V ?
Check component
soldering status OK at
F1000
CHECK soldered
L1004, C1023, C1026, RFS1000
Resolder or change
U1000, C1014
Resolder or change
F1000
Resolder or change
U1004
Check the freq. at
OSC1000 PIN 1 or PIN
3 : 26MHz ?
Change or resolder
OSC1000
Check L1005
≥
-65dBm ?
Resolder or change
Check L1005
WCDMA Band2
/ GSM1900
Receiver is O.K?
Resolder or change
UCP3000
END
NO
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check F1000 PIN 16, 17
≥
-65dBm
Resolder or change
F1000
NO
YES
CONTINUOUS RX ON
RF INPUT : 9880CH
AMP : -50dBm
Summary of Contents for GT-P5200
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