A3. Error Detection Process
1.
Normal
Check to see if
Fuse is normal
No light and sound
Abnormal
Check VD503~VD506,
C507, V513, etc.
Check to see if the
collector voltage of V552
is 27V
The failure ofhorizontal unit
orN204
Check to see
if , 9v,
5v is normal
Check the control
voltage of V572 or
CPU power pin
Check
N902,V905,ect
Normal
Normal
Abnormal
Check to see 110V
、
180V
etc. voltage is normal
Test to see all terminal
Resistance of load
Check switch
power unit
Check to see if
rectifying tube
is normal
Check the
Loader
Change
rectifying diode
Abnormal
Normal
Abnormal
Normal
Abnormal
Normal
Abnormal
The failure of horizontal
unit orN204
Maintenance Service and Trouble shooting
17