25
Make the phone connect the power
supply and find low or no current
YES
NO
YES
YES
NO
Cannot Power on-large current
Check
the
battery
connector and power key
Clean
，
reweld
or replace it
END
Upgrade the software
Check and replace
I/O connector
Replace or reweld flash
26MHZ&32.768KHZ
Check and replace
system clock
：
26MHz
&32.768KHz
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 or
reweld
power
manage IC
Replace U101
MT6589
Make the phone connect the power
supply and find low or no current
Check
the
battery
connector and power key
NO
NO
YES
YES
NO
NO
NO
YES
NO
Summary of Contents for LIFE ONE M
Page 1: ...1 BLU Life One Service Manual...
Page 15: ...15 Side A layout Side B layout...
Page 16: ...16 CHAPTER 6 CIRCUIT INSTRUCTION CHAPTER 7 UNIT CIRCUIT PRINCIPLE INTRODUCTION...
Page 19: ...19 Data transmission mailing address...
Page 23: ...23 SKY7775XX POWER AMPLIFIER MODULE FOR CDMA WCDMA HSDPA HSUPA HSPA LTE DAND...
