LG G5200 free download

File name W5200.PDF

SERVICE MANUAL MODEL : G5200 / W5200 GSM Phone SERVICE MANUAL MODEL : G5200/W5200 P/N : MMBD0015801 JUNE, 2002 Table Of Contents 1. INTRODUCTION...4 1.1 Purpose ...4 1.2 Regulatory Information ... 4 A. Security ...4 B. Incidence of Harm ...4 C. Changes in Service ...4 D. Maintenance Limitations ...4 E. Notice of Radiated Emissions ...5 F. Pictures ...5 G. Interference and Attenuation ...5 H. Electrostatic Sensitive Devices ...5 1.3 Abbreviations ... 6 3.10 Display and Interfaces ...28 3.11 Keypad Switches and Scanning ...29 3.12 Microphone ...30 3.13 Earpiece ... 31 3.14 Hands-free Interface ... 32 3.15 Headset Jack Interface ...32 3.16 Key Back-light Illumination ...32 3.17 LCD Back-light Illumination ... 33 3.18 Multi-Color LED Illumination ... 33 3.19 Speaker & MIDI IC ... 34 4. TROUBLE SHOOTING ... 35 4.1 RF Components ... 35 4.2 Tx Trouble ... 44 4.3 Power on Trouble ... 60 4.4 Charging Trouble ... 62 4.5 LCD Trouble ... 64 4.6 Receiver Trouble . ... 66 4.7 Speaker Trouble ... 69 4.8 Mic Trouble ...72 4.9 Vibrator Trouble ... 75 4.10 Backlight Trouble ... 77 4.11 Folder on/off Trouble ... 79 4.12 SIM Detect Trouble ... 81 4.13 Earphone Trouble ... 83 4.14 HFK Trouble ... 87 2. PERFORMANCE ...8 2.1 H/W Feature ...8 2.2 Technical Specification ... 9 3. TECHNICAL BRIEF ... 13 3.1 General Descreption ... 13 3.2 Receiver ... 13 A. RF front end ...14 B. Demodulator and baseband processing ... 14 C. DC Offset Compensation ... 14 3.3 Transmitter Part ... 15 A. IF Modulator ... 15 B. OPLL ... 16 C. Synthesizer ...16 D. TX APC Part ...17 E. Power Amplifier ...