Samsung SGH-E570 Service Manual page 19

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Flow Chart of Troubleshooting
VCORE_1.5
R217
VBAT
GSM74137_OUT
DCS74137_OUT
1
VCC1
2
TX_EN
TXENA
3
VPC
VPC
4
850LNA_N
5
850LNA_P
6
900LNA_N
7
900LNA_P
8
1800LNA_N
9
1800LNA_P
10
1900LNA_N
11
1900LNA_P
RX_EN
TX_FB
VAPC
R605
C616
VBAT
U205
6
IN
5 GND
4
_SHDN
C235
RTX_QP
RTX_QN
RTX_IN
RTX_IP
R601
MOD_SEL
NC
NC
NC
NC
UCD600
CHIPENA
SXENA
CLK
LATCHENABLE
DATAIN
VCC2
XTAL
C615
R606
C617
C618
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VCCD_1.6
L201
1
LX
GND 2
OUT
3
C232
C605
31
C607
C608
30
29
28
27
XOENA
26
SX_EN
25
SERCLK
24
SERLE
23
SERDAT
22
21
C610
R604
SAT_DET
AFC
CLK13M_OUT
3-2
VCCD_1.8
D201
C236
VRF_2.9
C606
OSC600
4
1
3
2
R603
R602

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