4. Troubleshooting
Item
NG point
NG Analyzing solution
Charge
Triggering
System
Charging failure 1>. Check if connectors TP45-TP50 of J401 are
cold solder, no solder, insufficient solder,
short-circuit, wrong solder, and etc. if there is
any, remove the abnormity;
2>. If (1) is normal, check if U401 and related
components and voltage are normal, remove
the abnormity;
3>. If (1), (2) are normal, check if Q402 and
T401 are normal, remove the abnormity;
4>. If (1), (2), (3), check if D401, R401
~
R406
and big capacitor are normal, remove the
abnormity;
5>. If above are normal, check if controlled pins
of MCU board are normal, remove the
abnormity.
Triggering
failure/
flash missing/ flash
only once
1>. Check if tube is offset or installed reversely,
wires of tube are cold solder or insufficient
solder, remove the abnormity;
2>. If (1) is normal, check if copper foil of
reflector contact well;
3>. If (1), (2) are normal, check if big capacitor
is insufficient solder and voltage is normal. If
voltage is too low, check if R401~R406 are
normal, remove the abnormity;
4>. If (1), (2), (3) are normal, check if Q403 is
triggered, cold solder or insufficient solder,
C505 is cold solder or broken, remove the
abnormity;
5>. If (1), (2), (3), (4) are normal, check if +5V
voltage is normal, remove the abnormity;
6>. If above items are normal, check controlled
pins on MCU board are normal, removes the
abnormity.
Lens
system
Lens flexing issue
1>. Check if connecting board of lens is NG,
cold solder or insufficient solder, remove the
abnormity;
2>. If (1) is normal, check if R84, R87, R89, R90
on MCU board are cold solder or insufficient
solder, remove the abnormity;
3>. If (1), (2) are normal, check if CN1 and CN2
contact well, remove the abnormity;
4>. If above items are normal, check if U8 and
related circuit are cold solder or insufficient
solder, remove the abnormity.
