Samsung SGH-Z650i Service Manual page 62

RFRX_2.85V
C803 C804
ANT_SEL0_N
C805
UMTS_ANT
ANT_SEL1_N
C806
ANT_SEL2_N
C807
MSMP_2.6V
SBCK
SBDT
SBST
RF_ON_TX_ON
R604
TX_AGC_ADJ
UMTS_TXRF
RFTX_2.85V
C625
OSC_2.85V
R620
C617
C618
VCO_TUNE
This Document can not be used without Samsung's authorization
L810
*
DUF800
6
ANT
8 VDD
9 V1 EGSM_RX
10 V2
EGSM_RX 13
11
V3 DCS_RX
DCS_RX
4 UMTS2100 PCS_RX 16
PCS_RX 17
22 EGSM_TX
GSM_TX
20 NC
DCS_TX DCS|PCS_TX
G G G G G G G G G
1 2 5 7 18 19 21 23 24
UMTS_RX_TUNE
UMTS_RX_VCO_IN
RFTX_2.85V
C603
R602
C606
43
42 41 40 39
44
SBCK
45
SBDT
46
SBST
47
RF_ON
48
VDDA13
49
VCONTROL
50
VDDA14
51
UMTS2100_OUT
52
VDDA15
C610 53
UMTS1900_OUT
54
VDDA16
55
UMTS800_OUT
56
VDDA17
57
GND
C613
58
NC1
59
NC2
1 2 3 4 5
C620
R612
C623
C624
R615
C0G type
R618
SAMSUNG Proprietary-Contents may change without notice
RFS800
C800
L800
L801
12
L803
14
15
L804
3
L806
L807
L809
C600
C0G type
C601
C602
C0G type
38 37 36 35 34 33 32 31 30 29
FAQ2
VDDA8
VDDA7
GSM1900_INP
GSM1900_INN
VDDA6
U600
GSM850_INP
GSM850_INN
DAC_REF
TX_IN
TX_IP
TX_QN
TX_QP
6 7 8 9 10 11 12 13 14 15
C616
C627
C628
C631
9-19
Flow Chart of Troubleshooting
ANT_JTAG
GSM_RXN
L802
GSM_RXP
DCS_RXP
L805
DCS_RXN
PCS_RXP
L808
PCS_RXN
R600
OSC_2.85V
R601
L600
C607
C608
10nF
10V
(0603)
28
RFTX_2.85V
27
26
25
PCS_RXP
24
PCS_RXN
23
22
21
20
DAC_REF
C611
19 L604
L605
18
17 L606
C612
L607
16
RFTX_2.85V
R621
RFS801
C609
TX_IM
TX_IP
TX_QM
TX_QP