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LG CU400 Mobile phone
Manufacturer:
Model:
CU400
Date:
2007
Class:
Type:
SubType:
Service Manual
Manual type:
Service Manual
Pages:
175
Size:
5.19 Mbytes (5442572 Bytes)
Language:
english
Revision:
1.0
Manual-ID:
Date:
01 January 2007
Quality:
Electronic document, no scan, very well readable.
Upload date:
15 January 2020
MD5:
e650c4d5d5543a837c8103ee4c07aa34
Downloads:
297

Information

1. INTRODUCTION ... 5 1.1 Purpose ... 5 1.2 Regulatory Information ... 5 2. PERFORMANCE ... 7 2.1 Default Packaging Accessories ... 7 2.2 System Specification ... 7 2.3 Using Condition (Accessory) ... 7 2.4 Radio Performance ... 8 2.5 Current Consumption ... 11 2.6 Operation Time ... 11 2.7 RSSI Bar ... 11 2.8 Battery Bar ... 12 2.9 BACKUP BATTERY : Over 50 hours ... 12 2.10 Sound Level ... 12 3. RF TECHNICAL BRIEF ... 13 3.1 MSM6280 (Block Diagram) ... 13 3.2 MSM6280 (GPIO MAP) ... 14 3.3 RF Block Diagram ... 16 3.4 Memory ... 17 3.5 Camera & LCD Interface ... 18 3.6 Interface USB,UART,SIM,JTAG ... 19 3.7 Power Block Diagram ... 20 3.8 Peripheral ... 21 3.9 Audio Block Diagram ... 22 3.10 Digital Baseband(DBB/MSM6280) ... 23 3.11 Subsystem(MSM6280) ... 26 3.12 Power Block ... 33 3.13 External memory interface ... 38 3.14 H/W Sub System ... 39 3.15 Main Features ... 57 4. TROUBLE SHOOTING ... 62 4.1 RF Component ... 62 4.2 Checking VCXO Block ... 66 4.3 Checking Ant. SW Module Block ... 68 4.4 Checking UMTS Block ... 71 4.5 Checking GSM Block ... 78 4.6 Power ON Troubleshooting ... 86 4.7 Charger Troubleshooting ... 88 4.8 USB Troubleshooting ... 91 4.9 SIM Detect Troubleshooting ... 93 4.10 Camera Troubleshooting ... 94 4.11 Keypad Backlight Troubleshooting ... 95 4.12 Folder ON/OFF Troubleshooting ... 96 4.13 Main LCD Troubleshooting ... 97 4.14 Receiver Path ... 98 4.15 Headset path ... 100 4.16 Speaker Phone path ... 102 4.17 Main microphone ... 104 4.18 Headset microphone ... 106 4.19 Vibrator ... 108 5. DOWNLOAD ... 109 5.1 Introduction ... 109 5.2 Downloading Procedure ... 109 5.3 Troubleshooting download errors ... 123 5.4 Caution ... 130 6. BLOCK DIAGRAM ... 131 6.1 CU400 Block Diagram ... 131 7. Circuit Diagram ... 133 8. pcb layout ... 140 9. Calibration & RF Auto Test Program ... 145 9.1 Configuration of HOT KIMCHI ... 145 9.2 How to use HOT KIMCHI ... 149 9.3 Example for using HOT KIMCHI ... 150 10. EXPLODED VIEW & REPLACEMENT PART LIST ... 153 10.1 EXPLODED VIEW ... 153 10.2 Replacement Parts <Mechanic component> ... 155 <Main component> ... 158 10.3 Accessory ... 174

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