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1. INTRODUCTION .............................. 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
2. PERFORMANCE...............................7
2.1 System Overview .....................................7
2.2 Usable environment .................................8
2.3 Radio Performance ..................................8
2.4 Current Consumption.............................14
2.5 RSSI BAR ..............................................14
2.6 Battery BAR ...........................................14
2.7 Sound Pressure Level............................15
2.8 Charging ................................................16
3. TECHNICAL BRIEF ........................17
3.1 General Description ...............................17
3.2 GSM Mode.............................................20
3.3 WCDMA Mode .......................................23
3.4 LO Phase-locked Loop ..........................26
3.5 Off-chip RF Components .......................28
3.6 Digital Baseband(DBB/MSM6250A) ......35
3.7 Hardware Architecture ...........................36
3.8 Subsystem(MSM6250A) ........................38
3.9 External memory interface .....................40
3.10 H/W Sub System..................................41
3.11 Main Features ......................................64
3.12 Main Component..................................65
4. TROUBLE SHOOTING ...................70
4.1 RF Component.......................................79
4.2 SIGNAL PATH .......................................71
4.3 Checking VCXO Block ...........................72
4.4 Checking Ant. SW Module Block ...........75
4.5. Checking WCDMA Block ......................77
4.6. Checking GSM Block ............................84
4.7 Bluetooth RF Block ................................92
4.8 Power ON Trouble .................................95
4.9 USB Trouble ..........................................97
4.10 SIM Detect Trouble ..............................98
4.11 Key Sense Trouble ..............................99
4.12 Camera Trouble .................................100
4.13 Main LCD Trouble..............................101
4.14 EL Sheet Trouble ...............................103
4.15 Folder ON/OFF Trouble .....................104
4.16 Camera Direction Detection Trouble..105
4.17 Trans Flash Trouble...........................106
4.18 Audio Trouble Shooting .....................107
4.19 Charger Trouble Shooting..................117
5. DOWNLOAD .................................120
5.1 Introduction ..........................................120
5.2 Downloading Procedure.......................120
5.3 Troubleshooting Download Errors .......134
5.4 Caution.................................................138
6. BLOCK DIAGRAM ........................139
6.1 GSM & WCDMA RF Block...................139
6.2 Interface Diagram ................................141
7. Circuit Diagram ............................145
8. pcb layout .....................................153
9. CALIBRATION ..............................159
9.1 HOT KIMCHI........................................159
9.2 How to use Hot Kimchi.........................163
9.3 HOT KIMCHI Example.........................164
10. EXPLODED VIEW &
REPLACEMENT PART LIST ..... 167
10.1 EXPLODED VIEW ............................ 167
10.2 Replacement Parts
<Mechanic component>.................... 169
<Main component> ........................... 173
10.3 Accessory ......................................... 191
Table Of Contents
Содержание U890
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model U890 U890c Service Manual U890 U890c ...
Страница 3: ... 4 ...
Страница 20: ...3 TECHNICAL BRIEF 21 ...
Страница 46: ...3 TECHNICAL BRIEF 47 Figure PM6650 2 Functional Block Diagram ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 2 SIGNAL PATH ...
Страница 109: ...4 TROUBLE SHOOTING 110 CN600 50pin LCD connector CN901 C907 C911 FB901 FB902 ...
Страница 115: ...4 TROUBLE SHOOTING 116 C226 C227 for MIC serial capacitor ...
Страница 118: ...4 TROUBLE SHOOTING 119 Q400 Q401 Q402 VBATT GND ...
Страница 139: ...Table 2 1 1 RF Block Component 6 BLOCK DIAGRAM 140 ...
Страница 140: ...6 BLOCK DIAGRAM 141 6 2 Interface Diagram U890 Interface Diagram ...
Страница 142: ...6 BLOCK DIAGRAM 143 Top Side ...
Страница 143: ...6 BLOCK DIAGRAM 144 Bottom Side ...
Страница 152: ... 153 8 pcb layout ...
Страница 153: ... 154 8 pcb layout ...
Страница 154: ... 155 8 pcb layout ...
Страница 155: ... 156 8 pcb layout ...
Страница 156: ... 157 8 pcb layout ...
Страница 157: ... 158 8 pcb layout ...
Страница 163: ...9 CALIBRATION 164 9 3 HOT KIMCHI Example Choose_U890 ...
Страница 164: ...9 CALIBRATION 165 Click APPLY button Click START button ...
Страница 165: ...9 CALIBRATION 166 Click Run button to lunch RF AUTOTEST ...
Страница 167: ... 168 ...
Страница 191: ...Note ...
Страница 192: ...Note ...