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TROUBLESHOOTING GUIDE
AUTO TRACKING
DOES NOT OPERATE
2.5Vp-p
YES
YES
NO
NO
In auto tracking, is the
voltage at pin 24 of IC3001
more than DC 0.2V?
Does the CTL pulse
signal (about 2.5Vp-p)
appear at pin 7 of IC3001.
Check CONTROL HEAD.
Change IC3001.
5V
Change
CYLINDER MOTOR.
Change IC3001.
Change CYLINDER MOTOR.
YES
YES
NO
NO
AT PLAY, THE PICTURE
JITTERS VERTICAL MINUTELY
Is FG wave of CP3001
at pin 11 5V ?
Is pin 12 of CP3001 2.6V ?