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Check the wave form at Q705
Collector.Does appear parabola
wave form?
Check and replace
IC301
Does IC301 32 pin wave form
exist?
Check and replace
R725,C720
T702 wave form is right?
Try Readjusting double Focus
Done
Check and replace
T702
Replace the CRT
and verify focus
YES
NO
NO
YES
YES
NO
NO
5-1-10 Dynamic Focus Failure or poor Focus
Others
Check the voltage at pin 21
of IC501
Normal : 5V
Push the EXIT Key : 0.5V
Push the SEL Key : 1.5V
Push the UP Key : 3.5V
Push the DOWN Key : 2.5V
Check and replace
R401,R403,R405,R406
NO
5-1-9 User control Failure
IC301 32 pin
T702