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Level 3 Repair
8-47
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8-3-2-10. WCDMA 2100 Transmitter
RX ON(Call Connected)
DL Channel : 10700 Ch / UL Channel : Auto
Cell Pwr = -50dBm / UE Target Pwr = 24dBm
RFS101 Pin 2
>= 20dBm
Yes
Resolder RFS100,L103,C100,L149
Check RFS100
pin3/4/5/6 = L /L /L /H
,
pin7 =2.7V(C105,107)
No
Check
R107,109,110,111
and
UCP300,U401
(crack,open,etc)
No
Yes
No
Resolder or change RFS101
Yes
Check U100 & UCP300
(crack,open,etc)
END
RFS101 Pin 20
>= 20dBm
DUF101
Pin 3 >= 20dBm
Yes
Resolder or change DUF101
No
PAM101
pin10 >= 20dBm
Yes
ResolderL129,C130,C145
No
PAM101
pin7 >= 4dBm
Yes
No
Check PAM101
VBAT(C128,129) = 3 ~ 4.2V
PA 0N(Pin6) = 0 ~ 0.5V
PA_R1(Pin2) = 0 ~ 0.5V
F101
Pin1 >= 0dBm
Yes
Resolder or change F101
No
U100
Pin59 or C179 >= 0dBm
Yes
Resolder C179,L143
No
DUF101
Pin 6 >= 20dBm
Yes
Resolder C153,L126,L147
No