Samsung SGH-D600 Service Manual page 23

L401
Typical 3.7V
VBAT
1.8V
+VDD_IO_HIGH
U100
H6
VCCTXVCOG
J3
VCCTXVCO DIVON
B6
VCCRFVCO DCSLNAIB
A8
VCCRFSYN DCSLNAI
A6
VCCRFLO DCSGSM1GND
J2
VCCOPLL CLKOUT2
B3
VCCMIX CLKOUT1
G8
VCCMASH CLK2CONT
A3
VCCLNA CLK
E9
VCCCLK CAPQB
A9
VCCBUF CAPQ
A7
VCCBB CAPIB
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U402
1 IN LX 5
2
GND
3 4
_SHDN FB
C403
R102
R103
D8
D1
C1
D2
D9
TP100
G9
C8
F8
B5
A5
B4
C120
7- 3
Flow Chart of Troubleshooting
L402
C402
R401 C401
R403
C116
R105
R106
26MHz Cl o c k
+VDD_GSM_CORE
DCS_RX_P
DCS_RX_N
D_REF_CLK
RF_CLK