Contents1. Safety Precautions1-1. Repair Precaution ...........................................................................1-11-2. ESD(Electrostatically Sensitive Devices) Precaution ...........................1-22. Specification2-1. GSM General Specification ..............................................................2-12-2. GSM Tx Power Class ......................................................................2-23. Product Function3-1. Main Function ................................................................................3-14. Array course controlSoftware Downloading4-1. Downloading Binary Files ................................................................4-24-2. Pre-requsite for Downloading ..........................................................4-24-3. S/W Downloader Program ...............................................................4-35. Exploded View and Parts List5-1. Cellular phone Exploded View .........................................................5-15-2. Cellular phone Part list ...................................................................5-26. Disassembly and Assembly instructions6-1. Disassembly6-2. Assembly7. MAIN Electrical Parts List8. Block Diagrams9. PCB Diagrams10. Flow Chart of Troubleshooting10-1. Baseband10-1-1. Power ON ..............................................................................10-1