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A3. Error Detection Process
1.
Check VD603~VD606,
Normal
Check to see if ,
N605 5v,
is normal
Normal
The failure ofhorizontal
unit orN201
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No light and sound
Check to see if
Fuse is normal
Normal
C607, N601etc.
Normal
Check to see if the
collector voltage of
VD622 is 24V
Abnormal
Check the control
voltage of V203 or
CPU power pin
Abnormal
Check N605 ,ect
25
Abnormal
Check to see 110V、180V
etc. voltage is normal
Abnormal
T est to see all terminal
Resistance of load
Normal
Check to see if
Check switch
rectifying tube
power unit
is normal
Normal
Check the
Loader
Abnormal
Abnormal
Change
rectifying diode
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