![background image](http://html.mh-extra.com/html/samsung/gt-i5800/gt-i5800_service-manual_1192447063.webp)
SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-45
This Document can not be used without Samsung's authorization
8-3-25. WCDMA Band8 TX
YES
YES
NO
YES
NO
NO
NO
L111,C127,FEM100
change or resolder
L112
about : 20 dBm
U300
{{C309 = 2.2V ?}
& {C316 = 1.3V ?}
& {C318 = 2.3V ?}
& {C320 = 1.4V ?}
END
U300
resolder or change
NO
Soldering state of U300 is O.K?
YES
YES
YES
U300
change or resolder
Check the freq. at
C300 :19.2MHz ?
U300
resolder or change
C134,C135,F101
change or resolder
YES
NO
PAM100
change or resolder
NO
CONTINOUS TX ON CONDITION
TX POWER DAC:120 CODE APPLIED
CH : 3013
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF LEV. : 10dBm
ATT. : 20dB
Check
DC bias
NO
C134
about : -5dBm
YES
PAM100 pin 1
about : -5dBm ?
C128,C130 =
3.8~4.2V ?
F100
change or resolder
YES
YES
NO
NO
L111
about : 20 dBm
U300
check & change
C102 :
2.85V?
RFS100, C100,
L101
check & change
F100 pin3:
about 20
dBm?
Summary of Contents for GT-I5800
Page 79: ...www s manuals com ...