VK520 Mainboard DiagramTechnical BulletinVer: CSC-VK520-H-041020VK520 Component Distribution DiagramLow Noise AmplifierAntenna Switch (Damage will cause no signal and other faults) (Damage will cause weak signal, unstable signal and other faults)Phase-Locked Loop Amplifier (Damage will cause weak signal, unstable signal and other faults) (Damage will cause no signal and other faults)26MHz Crystal Oscillator (Damage will cause failure to boot up and other faults)Font Library (Damage will cause failure to boot up and other faults)Transceiver (Damage will cause weak signal and other faults)Camera ICPower IC (Damage will cause failure to boot up, high power consumption and other faults) (Damage will cause failure to take pictures, blurred pictures and other faults)CPU (Damage will cause failure to boot up and other faults)32.768KHz Crystal Oscillator (Damage will cause inaccurate time)Prepared by: Reviewed by: Approved by: ------------------------------------------------------------------------------------------------------------------------Service Hotline: 800-8582071 Weikai Communication (China) Co., Ltd.Please keep it confidentialFax: 0592-5700902 Customer Service Center Technical Department ……
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