– 84 –
LD301
b
links 12 times
.
F
an loc
k
error
.
Is CN24 connected?
Is the propeller f
a
n
loc
k
ed?
Ha
v
e
the 1A fuse and
R107
b
lo
wn?
•
Is
15V
being
generated?
*
Chec
k
voltage
both
between
CN18
ĺ
and
Ļ
on
the control
P.
W
.B
.,
and
between
“+15V”
and
“15-0V”
(silk-screened)
on
the
po
w
e
r
P.W
.B
.
If
no
output
voltage
is present
on
the
po
w
e
r
P.W
.B
.side
,
replace
the po
w
e
r
P.W
.B
.
Is the f
an operating?
(An error occurs after the
fan operates f
or 2 minutes
.)
Is the v
oltage between
ĺ
and
ļ
at CN24 nor
mal?
(Nor
mally
, the v
oltage is
abo
v
e appro
x
. DC1.7V
.)
Connect the connector
.
Remo
v
e an
y
obstr
uctions
.
Replace the f
an motor
and main P
.W
.B
.
Is the v
oltage between
ĺ
and
Ľ
at CN24 nor
mal?
Chec
k to see if the v
oltage is
within 2.5V
±0.5V using a
tester
.
(In eff
ect, the output v
oltage
is alter
nately
switched
between 5V and 0V
.)
Replace the main
P.
W
.B
.
Replace the f
an motor
.
Ye
s
No
No
No
Ye
s
No
No
No
No
No
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
