4. TROUBLE SHOOTING
- 83 -
HDET
WCDMA
CP0402A1880EL
C1071
15p
C1070
1p
R1030
51
LMV228TLX-NOPB
U1003
B1
GND
B2
OUT
RFIN_EN
A1
VDD
A2
FL10
4
SAFEB1
C1088
10p
C1062
1000p
L1029
100nH
100000pF
C1086
1200p
C1085
4.7u
C1075
2
45
31
UMC4N
Q1000
C1068
NA
56nH
L1028
R1028
0
C1087
10p
100p
C1093
R1027
10K
R1025
6.2K
NA
C1074
C1063
1000p
3.3nH
L1301
2
IN
OUT
1
VCC1
VCC2
10
VCONT
4
VREF
5
U1004
50OHM
4
3
COUP
WS2512_TR1G
U1002
BGND
11
3
GND1
6
GND2
GND3
7
GND4
9
2
RFIN
8
RFOUT
1
100000pF
C1091
VDDRF2
12
VDDRF3
19
16
PLNA_IN
13
PLNA_OUT
PMIXM
10
11
PMIXP
17
ILNA_BIAS
ILNA_IN
18
14
ILNA_OUT
IMIXM
9
IMIXP
PLNA_BIAS
15
R
C1082
33p
C1084
27p
GND6
RX
TX
FL1003
LP69A
ANT
GND1
GND2
GND3
GND4
GND5
C1077
0.1u
100p
C1079
C1061
4.7u
4.7nH
L1023
L1030
2.7nH
+VPWR
+VPWR
VREG_RFTX_2.85V
HDET1
PA_ON
VREG_RFTX_2.85V
PA_R0
PA_ON
For testing, Max power output is needed.
Set the Phone Tx is ON
and PDM is 450
Check TP1
Over 21dBm ?
Change the board
RF Tx Level is OK
Check FEM
Check PAM Block
Refer to 3.5.4
NO
YES
Check TP2
Over 19dBm ?
NO
YES
Check TP3
Over 16dBm ?
NO
YES
Check TP4
Over -5dBm ?
NO
YES
Check Duplexer
TP3
TP4
TP2
Summary of Contents for U310
Page 3: ... 4 ...
Page 20: ...3 TECHNICAL BRIEF 21 ...
Page 33: ...3 TECHNICAL BRIEF 34 Figure 3 5 10 1 Bluetooth system architecture ...
Page 47: ...3 TECHNICAL BRIEF 48 Figure PM6650 2M Functional Block Diagram ...
Page 72: ...4 TROUBLE SHOOTING 73 4 2 SIGNAL PATH WCDMA Tx PATH WCDMA Rx PATH ...
Page 76: ...4 TROUBLE SHOOTING 77 ...
Page 90: ...4 TROUBLE SHOOTING 91 ...
Page 110: ...4 TROUBLE SHOOTING 111 CN501 C537 C538 MSM6250A ...
Page 116: ...4 TROUBLE SHOOTING 117 C216 C217 for MIC serial capacitor MSM6250A ...
Page 119: ...4 TROUBLE SHOOTING 120 Q400 Q401 Q402 VBATT GND ...
Page 149: ... 150 8 pcb layout ...
Page 150: ... 151 8 pcb layout ...
Page 151: ... 152 8 pcb layout ...
Page 152: ... 153 8 pcb layout ...
Page 153: ... 154 ...
Page 160: ...9 Calibration RF Auto Test Program 161 9 3 1 Example for Calibration Click START U310 ...
Page 163: ... 164 ...
Page 187: ...Note ...
Page 188: ...Note ...