Hi all!
I received this 6disc CD player for repair.
Occasionally it does not want to read a disc.
If it reads the disc, the transport makes a ticking sound near the edge (last tracks) and sometimes it skips or gets stuck in a passage there.
You can also hear the ticking sound in the output audio as artifacts.
Lens cleaning did not solve anything.
I noticed the disc is 'jumping' up and down when spinning, as it is not level. It seems to be out of balance in the horizontal plane.
is this normal?
Note that it is correctly centered, it is not jumping from side to side.
I have checked the motor spindle but it seems ok, no play at all.
See this video:
Pioneer PD-M610 issue - YouTube
Any ideas?
I will also go through a full calibration, but I'm just worried that this wobblyness is not normal.
I received this 6disc CD player for repair.
Occasionally it does not want to read a disc.
If it reads the disc, the transport makes a ticking sound near the edge (last tracks) and sometimes it skips or gets stuck in a passage there.
You can also hear the ticking sound in the output audio as artifacts.
Lens cleaning did not solve anything.
I noticed the disc is 'jumping' up and down when spinning, as it is not level. It seems to be out of balance in the horizontal plane.
is this normal?
Note that it is correctly centered, it is not jumping from side to side.
I have checked the motor spindle but it seems ok, no play at all.
See this video:
Pioneer PD-M610 issue - YouTube
Any ideas?
I will also go through a full calibration, but I'm just worried that this wobblyness is not normal.
It is either something really simple like a speck of something on the platter causing the disc to not sit flat or else the platter is not running true.
Yes, this is it:
Shared album - Olivier Selleslag - Google Photos
Isn't this just the place where the solder link is to protect the diode from ESD?
Shared album - Olivier Selleslag - Google Photos
Isn't this just the place where the solder link is to protect the diode from ESD?
Thanks anyway 😉
I did a full alignment.
First time I tried this. Should have read about the grating adjustment before just trying to do what the service manual said. Damn, that was hard getting it right. But I think it's OK now.
Anyway, the only things I found to be a bit off where the focus and tracking gains. Here is a before and after pic of the focus gain lissajous-figure:
Anyway, after these adjustments, the player still struggles. It sometimes takes VERY long to find a track start (up to 10s). But it seems to play most tracks fine.
There's one CD it doesn't read fine, with lots of skipping, but I think I might have damaged it a bit during calibration... doh. It has some scratching marks.
Anyway, I don't think I can do much more to save this player. I'm gonna give it back to the owner and see what he thinks.
I did a full alignment.
First time I tried this. Should have read about the grating adjustment before just trying to do what the service manual said. Damn, that was hard getting it right. But I think it's OK now.
Anyway, the only things I found to be a bit off where the focus and tracking gains. Here is a before and after pic of the focus gain lissajous-figure:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Anyway, after these adjustments, the player still struggles. It sometimes takes VERY long to find a track start (up to 10s). But it seems to play most tracks fine.
There's one CD it doesn't read fine, with lots of skipping, but I think I might have damaged it a bit during calibration... doh. It has some scratching marks.
Anyway, I don't think I can do much more to save this player. I'm gonna give it back to the owner and see what he thinks.