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4. TROUBLE SHOOTING
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4.6.1 Checking VCO Block
TP1
TP3
TP2
TP4
TP5
TP6
(PPS)
R236
150
C238
4.7u
100p
C257
C315
15p
1
OUT_GSM
9
SW1
11
SW2
3
VB
VC
10
GND1
2
GND2
4
GND3
6
7
GND4
GND5
8
GND6
12
13
GND7
GND8
14
5
OUT_DCSPCS
U210
MQW5V0C869M
R234
24
15
R228
100
R237
22n
ECHU1C223JX5
C313
1000p
C310
FB201
0.1u
C240
C312
0.1u
100p
C309
C311
4.7u
220
R235
270
R229
82
R239
R233
200
R232
51
15p
C314
C316
120p
R238
47
R240
100
GSM_TX_VCO_0_EN_N
GSM_TX_VCO_1_EN_N
VREG_RFTX_2.85V
VREG_RFTX_2.85V
VREG_MSMP_TCXO
TP1 TP4 TP2 TP3
TP5
TP6
Test Point (TXVCO Level)
Schematic of RF TXVCO
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 ...