
4. TROUBLE SHOOTING
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4.4 Checking Ant. SW Module Block
ANT_SEL0
ANT_SEL1
ANT_SEL2
TP1
Antenna Switch Block(Bottom)
33p
C279
2
3
GSM1900_RX
1
GSM900_RX
13
GSM900_TX
9
VC1
VC2
8
5
VCG
VDD
10
WCDMA
4
U207
SFAY0004601
7
ANT
GND1
6
11
GND2
GND3
14
15
GND4
GND5
16
GSM18001900_TX
12
GSM1800_RX
ANT200
R223
0
R222
0
L229
10nH
1p
C283
C284
27p
0
R224
RF200
KMS-507
ANT
G1
G2
RF
C286
0.1u
100p
C277
100p
C281
100p
C285
R221
2.2nH
UMC4N
2
4
5
3
1
Q507
VREG_RFTX_2.85V
VREG_RFRX_0_2.85V
ANT_SEL2
ANT_SEL1
ANT_SEL0
GSM_PA_RAMP
Schematic of the Antenna Switch Block
Logic Table of the Antenna Switch
ANT_SEL2
ANT_SEL1
ANT_SEL0
GSM 900 TX
LOW
LOW
HIGH
GSM 900 RX/WCDMA
LOW
LOW
LOW
DCS1800/PCS1900 TX
HIGH
HIGH
LOW
DCS 1800 RX
LOW
HIGH
LOW
PCS 1900 RX
HIGH
LOW
LOW
Summary of Contents for U8210
Page 22: ...3 TECHNICAL BRIEF 23 Figure 3 2 1 1 RTR6250 IC Functional Block Diagram ...
Page 37: ...3 TECHNICAL BRIEF 38 Figure 3 5 12 1 Bluetooth system architecture ...
Page 110: ...4 TROUBLE SHOOTING 111 USB_D USB_D USB_VBUS X100 48M 48MHz ...
Page 115: ...4 TROUBLE SHOOTING 116 LCD Control data flow ...
Page 117: ...4 TROUBLE SHOOTING 118 LCD Control data flow ...
Page 122: ...4 TROUBLE SHOOTING 123 TR400 ...
Page 124: ...4 TROUBLE SHOOTING 125 FLASH_ON from Main Bíd PM6650 CN1 Flash LED ...
Page 127: ...4 TROUBLE SHOOTING 128 FB503 CN500 FB502 CN2 CN1 ...
Page 129: ...4 TROUBLE SHOOTING 130 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 131: ...4 TROUBLE SHOOTING 132 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 133: ...4 TROUBLE SHOOTING 134 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 135: ...4 TROUBLE SHOOTING 136 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 137: ...4 TROUBLE SHOOTING 138 R649 CN300 CN2 CN1 U605 C633 R648 C634 R622 R623 ...
Page 139: ...4 TROUBLE SHOOTING 140 C627 Head_set Output Pin 4 5 C626 CN304 R624 ...
Page 141: ...4 TROUBLE SHOOTING 142 MIC Contact C404 C401 ...
Page 143: ...4 TROUBLE SHOOTING 144 C115 Head_Phone Input Pin 2 3 C102 CN304 R624 ...
Page 146: ...4 TROUBLE SHOOTING 147 Receptacle 4 6V 4 6V ...
Page 151: ...5 BLOCK DIAGRAM 152 Top Side ...
Page 152: ...5 BLOCK DIAGRAM 153 Bottom Side ...
Page 154: ...6 DOWNLOAD 155 It is ready for downloading ...
Page 160: ...6 DOWNLOAD 161 6 Click on Download to download ...
Page 165: ...6 DOWNLOAD 166 Downloading the Module image Finally Download has been complete ...
Page 168: ...6 DOWNLOAD 169 When you meet the NV Restore error Connect to the phone ...
Page 170: ...6 DOWNLOAD 171 Select the proper file and click on Restore Reading the NV file and restore NV ...
Page 200: ... 201 9 PCB LAYOUT ...
Page 201: ... 202 9 PCB LAYOUT ...
Page 202: ... 203 9 PCB LAYOUT U8210 KEYPAD SPEY0032001 1 1 TOP ...
Page 203: ... 204 9 PCB LAYOUT ...
Page 204: ... 205 9 PCB LAYOUT ...
Page 206: ... 207 ...
Page 207: ... 208 ...