Is
changeable the
DC voltage of
IC401 pin 6?
Check the IC401
and its
ambient circuit
Check the pin 23 of IC501
and its ambient circuit
No
No
Trouble V.OSC/
Deflection Circuit
Refer to V.OSC/Deflection circuit
Yes
Is
the 3.5Vdc of pin
23 of the IC501?
Yes
Abnormal
V.Size
