3. TROUBLE SHOOTING
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Only for training and service purposes
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3. TROUBLE SHOOTING
3.1 Checking XO Block
The output frequency(19.2MHz) of XO(X6000) is used as the reference one of WTR1605L and PM8941 internal VCO.
U2002
TP1
DNI
C2114
C2111 100p
86
100
45
89
80
93
60
79
120
105
121
88
114
96
71
70
62
56
GNSS_BB_IP
GNSS_BB_IM
GNSS_BB_QP
GNSS_BB_QM
DNC4
DNC5
GP_DATA2
GP_DATA1
GP_DATA0
XO_IN
VTUNE_PRX
RBIAS
DNC3
SSBI_PRX_DRX
SSBI_TX_GNSS
RX_ON
RF_ON
DNC1
R2006
4.75K
RF_ON0
RX_ON0
WTR_SSBI_PRX_DRX
WTR_GPDATA1
WTR_GPDATA0
WTR_SSBI_TX_GNSS
WTR_GNSSBB_I_P
WTR_GNSSBB_I_M
WTR_GNSSBB_Q_P
WTR_GNSSBB_Q_M
XO_OUT_A0
QCT REVIEW
(R-001592)
12/07
QCT REVIEW
(R-001597)
QCT REVIEW
(R-001613)
TP1 (C2111)
BOT