9-4
START
Power on
Power
green LED
on
Do all
the buttons work
normally?
Does
remote control work
normally?
Check P_3V3
Is battery OK?
Check
HA6 on the
mainboard
Check IC MT1389
Replace IC MT1389
Replace IC MT1389
Replace battery
Replace IR1
Check the buttons
Is P_3V3 OK?
Do
the U8 work
normally?
Check power
Replace U8
3. Front Circuit (Dogotrpm & key)
YES
YES
YES
YES
YES
NO
NO
NO
YES
YES
NO
NO
NO
NO
NO
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299