Onix CD-1----Play, no tray

The supply voltage could be as low as 5V on pin 5 Lee depending on the tray motor type used.
 
I do have the things to remove an IC if you need it. I have no need for them. Monday is my payday. So I may ship some things.

Larry
 
Damn- a whole herd of ya standing by to help and I went to sleep, sorry guys, dropped the ball there eh?? Got a call back to the field guys, got a workover rig in a bind. Later, but not too, I hope.
 
Figured that Lee, we got tired of listening to the snoring, it was ruining the signal to noise ratio on our WOPL amps :-)
 
Ok mI'm ready. Checking pins 9,12 with ground referenced at 10. When progressing through thge open/close routine pin 12 does the "GO HIGH" Go Low thing but only for a 1/2 second or so. Getting a good reading on the limit switch. I don't think it's staying hi long enough to trip the limit switch, or get moving at all for that matter. Looks like only 2 volts though.
 
laatsch55 said:
Ok mI'm ready. Checking pins 9,12 with ground referenced at 10. When progressing through thge open/close routine pin 12 does the "GO HIGH" Go Low thing but only for a 1/2 second or so. Getting a good reading on the limit switch. I don't think it's staying hi long enough to trip the limit switch, or get moving at all for that matter. Looks like only 2 volts though.
Click to expand...

Ok, how much volts ya got between pins 5 and 10? Also watch the same reading there when you hit the button.. does it drop at all?
 
It goes high with an increase of about 1 volt, but it has a steady 1 volt going through it also.
 
Excuse me 6 shows a low/hi with button actuation. 5 shows a constant 2 volts and no increase or decrease with button.
 
So without doing anything, it's only 1 volt at pin 5???

If so, there's your problem.. that is supposed to be fed directly from the 5volt (or whatever it should be) power supply rail. So either the 5 volts are missing or the chip itself is shorted Vp to ground and is pulling down the normal voltage there.

Hmmm.. might not be 5 volts either, at least NOT the same 5 volts that would be supplying the digital/control side - if that was the case chances are you'd see a LOT more symptoms.

In any case, that pin 5 is where the main "juice" is supposed to be fed into the chip. I doubt it should be 1v and definitely not something that actually "changes".
 
laatsch55 said:
Excuse me 6 shows a low/hi with button actuation. 5 shows a constant 2 volts and no increase or decrease with button.
Click to expand...

Ok.. yeah.. 2 volts on Vp (aka pin 5). I don't think that's "good". It should be higher than that. Prove it by supplying just 2 volts to the motor itself - can it actually MOVE with just 2 volts or is that too little?
 
At 5 v/div it's reading right at 5 volts and does not change.
 
6 is reading 2-1/2 constantly and only a 1/4-1/3 volt bump with button pushing.
 
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