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TROUBLE SHOOTING
FLOW CHART NO.1 (8U-110068-1, -2:POWER UNIT)
The power cannot be turned on.
Is the fuse normal?
Is normal state restored when once unplugged
power cord is plugged again after several seconds?
Is the +3.3V line voltage normal?
Check each rectifying circuit of the secondary
circuit and replace it if defective.
FLOW CHART NO.2 (8U-110068-1, -2:AC INPUT UNIT, POWER UNIT)
The fuse blows out.
Check the presence that the primary component
is leaking or shorted and replace it if defective.
After servicing, replace the fuse.
O.K.
O.K.
O.K.
O.K.
O.K.
O.K.
N.G.
See FLOW CHART NO.2 <The fuse blows out.>
N.G.
Check if there is any leak or short-circuiting on
the primary circuit component, and replace it if
defective.
(C901,C902,C903,C906,C907,C908,L901,L902,T901）
N.G.
N.G.
Check the presence that the rectifying diode
or circuit is shorted in each rectifying circuit of
secondary side, and replace it if defective.
20
O.K.
O.K.
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