4. Troubleshooting flow chart for "Power not on" is shown in the picture 3.3.2.4:
N
N
N
Power not on
Whether battery
voltage is lower than
3.4V
Whether there is OSD
after connecting with
computer
Change battery components
Whether battery
voltageis up to 3.6V
after charge
Check charge circuit
Whether U16 input
pin voltage is up to
5V
Check D5 and Q2
BGA has trouble
Check
whether U6 outputs 1.8V
normally
N
Check
whether U16 outputs
3.3V normally
Check U16 and peripheral
circuit
Refer to troubleshooting
process for "Machine not
power on"
N
Check U6 and peripheral
circuit
Y
Y
Y
Y
Y
Y
Figure 3.3.2.4 Troubleshooting diagram for “Power not on”
N
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