6
Pic 17 optocouple 250 DC13V working power circuit
LNK306 integration
817 optocouple
1mH inductance
DC13V
stabilivolt
4743
10
Ω
/1W current-limiting
resistance
Four motors don’t work
DC110V driving power has
problem
The optocouple 250
without DC13V power
optocouple 250 DC13V
working power is short out
Open circuit to test, when
you open DC13V power, if
the loading voltage is
normal, it indicating that
the DC13V power circuit is
normal
,
the problem was
caused by 250 optocouple
、
IR21091 paster integration
or other components was
broken caused short out,
change the components or
PC board is ok.
First make sure there is
AC110V power input to PC
board, if without this
power, check the
transformer, then check the
AC110V power through
holes on PC board is it ok.
The last check the rectifier
bridge GBJ1510 is it working
well.
Change the new
components or PC board
Figure 17 and 18
,
check
4743 stabilivolt
、
LNK306
integration
、
817
optocouple
、
10
Ω
/1W
resistance
、
1mH inductance
is it working well
,
if not,
change the new
components or PC board
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