LG CU575 Mobile phone
Manufacturer:
Model:
CU575
Date:
2007
Category:
Group:
Description:
Service Manual
Manual type:
Service Manual
Pages:
179
Size:
4.94 Mbytes (5178339 Bytes)
Language:
english
Revision:
1.0
Manual ID:
Date:
01 August 2007
Quality:
Electronic document, no scan, very well readable.
Upload date:
15 January 2020
MD5:
23c7a90de45a9de9c0eab5e886b2a16d
Downloads:
194

Information

1. INTRODUCTION ... 5 1.1 Purpose ... 5 1.2 Regulatory Information ... 5 2. PERFORMANCE ... 7 2.1 System Specification ... 7 2.2 Using Condition (Accessory) ... 7 2.3 Radio Performance ... 8 2.4 Current Consumption ... 11 2.5 Operation Time ... 11 2.6 RSSI Bar ... 11 2.7 Battery Bar ... 12 2.8 BACKUP BATTERY : Over 50 hours ... 12 2.9 Sound Level ... 12 3. RF TECHNICAL BRIEF ... 13 3.1 MSM6260 ( Block Diagram) ... 13 3.2 RF Block Diagram ... 14 3.3 Memory ... 15 3.4 Camera & LCD Interface ... 16 3.5 Interface USB,UART,SIM,JTAG ... 17 3.6 Peripheral ... 18 3.7 Audio Block Diagram ... 19 3.8 Digital Baseband(DBB/MSM6260) ... 20 3.9 Subsystem(MSM6260) ... 23 3.10 Power Block ... 30 3.11 External memory interface ... 35 3.12 H/W Sub System ... 36 3.13 Main Features ... 53 4. TROUBLE SHOOTING ... 57 4.1 RF Component ... 57 4.2 Checking VCXO Block ... 61 4.3 Checking Ant. SW Module Block ... 63 4.4 Checking UMTS Block ... 66 4.5 Checking GSM Block ... 73 4.6 Power ON Troubleshooting ... 79 4.7 Charger Troubleshooting (TA Charging) ... 81 4.8 Charger Troubleshooting (USB Charging) ... 84 4.9 USB Troubleshooting ... 87 4.10 SIM Detect Troubleshooting ... 89 4.11 Camera Troubleshooting ... 91 4.12 Keypad Backlight Troubleshooting ... 92 4.13 Folder ON/OFF Troubleshooting ... 93 4.14 Main LCD Troubleshooting ... 94 4.15 Receiver Path ... 95 4.16 Headset path ... 97 4.17 Speaker Phone path ... 99 4.18 Main microphone ... 101 4.19 Headset microphone ... 103 5. DOWNLOAD ... 105 5.1 Introduction ... 105 5.2 Downloading Procedure ... 105 5.3 Troubleshooting Download Errors ... 119 5.4 Caution ... 126 6. BLOCK DIAGRAM ... 127 6.1 CU575 Block Diagram ... 127 7. Circuit Diagram ... 129 8. BGA ... 139 9. PCB LAYOUT ... 143 10. Calibration & RF Auto Test Program ... 147 9.1 Configuration of HOT KIMCHI ... 147 9.2 How to use HOT KIMCHI ... 151 9.3 Example for using HOT KIMCHI ... 152 11. EXPLODED VIEW & REPLACEMENT PART LIST ... 155 11.1 EXPLODED VIEW ... 155 11.2 Replacement Parts <Mechanic component> ... 157 <Main component> ... 160 11.3 Accessory ... 178

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