Blu Life One - Page 24

24
Chapter 8TROUBLESHOOTING
Cannot power on-current swing instability
YES
NO
NO
YES
YES
NO
YES
NO
NO
NO
NO
Cannot power on-low or no current
26MHZ&32.768KHZ
Check and replace
system clock：26MHz
&32.768KHz
Make the phone connect the power supply
and find the current swing at 50-100mA
END
Check the power manage supply
output：
VCCRE 1.8V
VDD 2.8V
AVDD 2.8V
VTCXO 2.8V
VMEM 2.8V
VRTC 1.2V
Replace U101
MT6589
Upgrade the software
Check and
replace the I/O
connector
Replace or reweld flash
Replace or
reweld
power
manage IC