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Trouble Shooting
LED
2
times
blink
Trouble
Mode
and
Defective
Board
Trouble
Mode
Defective
Board
(Possibility)
12V
down
SOS
P,
D,
PB
Board
(
P
>
D,
PB
)
How
to find
the defective
board
Power
SW
ON.
<
12V
output
>
at
P25's
(or
D25's)
1
or
2
pin^
before
Shutdown
?
Jves
D
Board
No
Power
SW
OFF.
^Disconnect
P25
(or
D25).'
^P25's
1
or
2
pin
Short
with
GND
?
No
Yes
Power
SW
OFF.
X"
;w OFF.
^Disconnect P5
(or
PB5).
^P5's
6 or 7
or
8
pin
Shorr^"
)
?
1
with
GND
?
Yes
P
Board
Power
SW
OFF.
^Disconnect
P25
(or D25).'-
^D25's
1
or
2
pin
Short
with
GND
?
No
PB
Board
Xyos
D
Board
P
Board
Power
Supply and
Protection
Circuit
r
+ 12V-
Vsus,
Vlow
stop
Relay
OFF
D3
(X
DG
@
•-*
IC4005
<§-5
9
LED
3
times
blink
Trouble
Mode
and
Defective
Board
Trouble
Mode
Defective
Board
3.3V
down
SOS
D
Board
How
to find
the defective
board
The
defective
board
is
D
board
ONLY.
Power
Supply and
Protection
Circuit
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