Prestigio PMP7170B3GCE, Service Manual And Technical Manual, Page: 17 / 41

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