Samsung SGH-Z650i Service Manual page 67

Flow Chart of Troubleshooting
UMTSTX_IN
DCSTX_IN
GSMTX_IN
R708
UMTS_MODE
BAND_SEL
R701
GSM_PA_PWR_CTL
GSMTX_EN
C738
UMTSTX_EN
MOD_CP
C619
TX_VCO_0_EN
TX_VCO_1_EN
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1
WCDMA_IN WCDMA_OUT
4
DCS|PCS_IN DCS|PCS_OUT
10
GSM_IN
2 PAM700
VMODE
8
CEXT
5
BS VCC_WCDMA
9
VRAMP
6
TX_EN
3
VEN
1314 16 17 19 23
C730
C700 C704 C705 C729
RFTX_2.85V
R607
TA600
C614
R610
R611
C621
C622
R616
C630
R619
C632
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C706
R704
20
18
DCSTX_OUT
12
GSMTX_OUT
GSM_OUT
15
R709
VCC_OUT
11
VCC2_GSM
21
C736 C739
7
VBATT
VBAT
22
VBATT
TA700
C702 C701
GSMTX_IN
DCSTX_IN
C615
VCO600
11 7
1
2
SW1 OUT2
4
SW2
9 VC OUT1 5
12 10 8 6 3
C633
9-24
UMTS_ANT
C703
L709
DUF700
8
ANT
5
11 TX
RX
C708
C707 6 7 9 10 12 13
1 2 3 4
R700
C709
R605
R606
R614 R613
C626
C629
R617
UMTS_LNAIN
TXVCO