4. Troubleshooting
Item NG point NG Analyzing solution
Power on fail
(Without current)
1>. Check if the connection between MCU
board and Power board is OK;
2>. Check if the fuse F801, F802 on power
board are broken;
3>. Check if related circuit of Power key
on shutter board SW301 is normal;
4>. Check if U802, U804 and related
components on Power board are OK;
5>. Check if U2/ U3/ U8/ U9 on MCU
board are OK;
6>. Check if the connecting flex board
between shutter board and MCU board is
OK, and the touch of interface is OK;
7>. Check if J602 on I/O board soldering
is OK, pins are OK and power wire
soldering is OK;
8>. Check if the connection between
battery and contact is OK and battery
wire soldering is OK;
9>. Check if J3 & J4 soldering on base
PCB is OK and pins are OK.
Power on fail (with
current)
1>. Update boot again and confirm if it
can power on;
2>. Check if U802 is cold soldering,
insufficient soldering;
3>. Check if each voltage on power board
is normal.
Power system
Fail to charge battery 1>. Check if U801 & Q801 are OK;
2>. Check if Q802 soldering is OK and
components are OK.
Lens flex issue 1>. Check if the contact between lens
connecting board and interface is OK and
if flex board is broken;
2>. Check if J4 on MCU board is cold
soldering;
3>. Check if the output of J4 on MCU
board is +5V;
4>. Check if U7 on MCU board and
surrounding components are OK.
Aperture shift issue 1>. Check if the contact of lens connecting
board is bad, cold soldering or
insufficient soldering;
2>. Check if U7 on MCU board and
surrounding components are OK.
Lens system
Fail to focus Check if lens action is normal.
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