Table of Contents
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1.Check if Battery is normal. 3.3~4.2V (if not, Please charger ）
2.Check if key is normal. SW1301 2.4-4.5V （ if not, check U0301,KEY FPC
）
3.Check if Backlight VCC is normal. C1512 9V （ if not, check U1521 ）
4.Check if TCXO working normally. U0502 26MHz （ The TCXO measures
C0517 as 26MHZ ）
5.Check if RESET# is high level. （ 3.0V C0104 ）
6.Check if the CPU/ DDR/FLASH/ POWER key is cold solder, bridging or
defective.
Troubleshooting 2: Cannot Power on
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Table of Contents
