4. TROUBLE SHOOTING
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Schematic of Bluetooth RF Block
BLUETOOTH
1608
C515
1u
ANT500
FEEDING
NC
33p
C522
RX_BB_TX_BB
8
SBCK
10
11
SBDT
SBST
6
5
SYNC_DET_TX_EN
VDD_A
14
VDD_MSM
12
XTAL_IN
4
RB06A
ANT
16
9
CLK_REF
1
GND1
7
GND2
15
GND3
LDO1
2
3
LDO2
13
NC
U504
1u
C520
R513
0
TP413
TP411
TP412
C592
1p
NA
C591
TP402
2.2u
C519
C518
33p
C590
2.5p
1u
C517
0.01u
C521
R514
0
C516
0.01u
1000p
C514
BT_TX_RX_N
BT_CLK
UART_TXD
UART_RXD
PM_ON_SW_N
BT_SBCK
BT_SBDT
BT_SBST
VREG_MSMP_2.7V
BT_DATA
TCXO_BT
VREG_BT_2.85V
100K
R401
C402
1000p
3
GND
2
4
5
VCC
U400
TC7S04FU
1000p
C401
TCXO_BT_IN
VREG_BT_2.85V
TCXO_BT
TP1
TP5
TP2
TP3
TP4
Summary of Contents for U8500
Page 1: ...Date February 2006 Issue 1 0 Service Manual Model U8500 Service Manual U8500 ...
Page 20: ...3 TECHNICAL BRIEF 21 ...
Page 32: ...3 TECHNICAL BRIEF 33 Figure 3 5 6 1 GSM PA functional block diagram ...
Page 35: ...3 TECHNICAL BRIEF 36 Figure 3 5 10 1 Bluetooth system architecture ...
Page 50: ...3 TECHNICAL BRIEF 51 Figure 3 10 3 2 1 PM6650 Functional Block Diagram ...
Page 114: ...4 TROUBLE SHOOTING 115 Loud Speaker U502 U503 Amp ...
Page 118: ...4 TROUBLE SHOOTING 119 C200 C201 for MIC serial capacitor ...
Page 121: ...4 TROUBLE SHOOTING 122 Q404 Q403 Q402 VBATT GND ...
Page 143: ...6 BLOCK DIAGRAM 144 6 3 Interface Diagram U8500 Interface Diagram ...
Page 145: ... 146 ...
Page 154: ... 155 U8500 8 PCB LAYOUT ...
Page 155: ... 156 8 PCB LAYOUT U8500 ...
Page 156: ... 157 8 PCB LAYOUT ...
Page 157: ... 158 8 PCB LAYOUT ...
Page 158: ... 159 U8500 8 PCB LAYOUT ...
Page 159: ... 160 U8500 8 PCB LAYOUT ...
Page 166: ...9 CALIBRATION 167 Click START button U8500 U8500_ver1 1 U8500 U8500 Click U8500 ...
Page 167: ... 168 ...
Page 169: ... 170 ...
Page 194: ...Note ...
Page 195: ...Note ...