Service Manual
Model No:
Issue
Rev.
17
If you replace the computer sequencer without ch
e
cking the other components carefully, the
computer sequencer may be damaged again. Therefore,please first check if the other components
working normally before replacing the computer sequ
e
ncer in maintence.
6-2-1 No action (The indicator is off)
Confirm that there's no power failure
and the power plug is inserted reliably.
The power switch is at "On" mode.
Measure the voltage
of the two ends of the power input
of the sequencer
Replace the sequencer.
Exist
Not exist
Pull off
the power
plug
Measure the resistance
between the light blue wire terminal
in the white plug on top of the wire unit
and the N pin on the power
receptacle
Infinite
The resistance
is 0
Measure the resistance
between the light blue wire terminal
in the red plug on top of the wire unit
and the light blue wire of
the lower part.
Infinite
The resistance
is 0
The resistance
is 0
Replace the
power cord.
Measure the resistance
between the brown wire terminal
in the white plug on top of the wire
unit and the brown wire of
the lower part.
Infinite
Check if the fuse is burnt?
Yes
No
Replace the fuse.
Replace the wire unit.
At this time please chenck if the other
electric components work normally.
Check if the connection
between the fuse and the wires
of the two ends are well?
Yes
Replace the computer
sequencer.
No
Connect the fuse and the
wires of the two ends.
6-2. Trouble-shooting charts
520-MABE1789
