Advertisement
Trouble shooting Guide
1.Power Supply Trouble
N
Check F1 and CN10
Check F1 for shortcut
N
Check the power
OK
supply net follow F1
N
Check Mcu
1,power supply
2,Reset
3,Crystal
Check F1 for 12V
Y
N
Turn on
the set
Y
OK
Check E33(470μF/25V)for 5v
N
Turn on or not
Y
Check Pin3 U13
For 350Khz
switch signal
N
U13/MP1410ES &
D17/IN5822
Higt Voltage
U13/MP1410ES
5thPIn & U13
Y
Y
Check power output for LDO
N
Change LDO
Or The load is
Y
Check L9/47μH
N
Y
Low voltage
Check C111/0.01F
Y
OK
Advertisement
