Finally, an affordable CD Transport: the Shigaclone story

Jump to Latest
S

syklab

Member
Joined 2009
Hi,
Same experience with my CD platform,the CD is kind of wobbling and it is a bit lose. I spent the whole last night adjusting the gap and try to read different CDs again, finally found that most CD reads ok except the LPCD45 which generates some digital along with the digital signal that doesn't appear with regular CD. Sometime read error and re-seeking occur near the end of the CD or the last 2 tracks. I ordered another Laser mechanic locally for comparison. Any suggestion ?
 
S

Sean Henderson

Member
Joined 2004
Transformer Secondary to J7 Connector

Tibi or anyone else...

Referencing the User Manual, I just want to make sure I am wiring the transformer to the Power Supply Module correctly.

Viewing the actual Power Supply Module in that SAME orientation as the Diagram, the silk screening marking AC2 is to the left of J7 and the the Blue wire is connected to the J7 input nearest the AC2 marking and the Brown wire goes to the input nearest AC1 to the right of J7...is this correct?

I have the Green/Yellow and White wires going to the center input on J7.

Hope to get this thing fired up this week and fine turn the CD Turntable height as needed.
 
iTiberius

iTiberius

Member
Joined 2005
dimkasta said:
Tibi I have just hooked up my kit and it seems to act strangely.

When I power it up, the motor that returns the eye to the center seems to work continuously making the plastic suspension thingy go ticktcitckitck and nothing more happens. LCD shows only the dashes flash.
Have I connected something wrong?

thanks again for a wonderful kit

Dim
Click to expand...

Could you please send me some pictures with your connections and while working via email ?

Regards,
Tibi
 
iTiberius

iTiberius

Member
Joined 2005
Sean Henderson said:
Tibi,

The Shiga arrived! Other than to unwrap everything, I have not wired it up and I hope to do that soon.

On inspecting the Sanyo Transport, I noticed that the CD Turntable had been moved down on the motor shaft to the point it that a mounted CD will not clear the Laser Sled. The motor shaft was not bent.

Since this was reported by at least one other person, I decided to take some measurement off 2 spare Sanyo Transports for reference. Measured with a dial caliber from the top edge of the CD Turntable where the CD will rest on, to the top of the stamped metal "chassis", both of my samples measure 19.58 mm.

What I found in adjusting the CD Turntable that came with the kit is that the CD Turntable is not very tight on the motor shaft at all, or for that matter the 2 spare units. All of them are tight enough not to spin on the shaft on motor start up.

I am going to set the CD Turntable to the measured height 19.58 mm and actually test it to ensure it reads a good sampling of CD's and fine tune the height so that the laser head is close to its static position as possible when reading a perfectly flat CD. That will allow it the maximum amount of +/- laser servo travel for reading disc that are not perfectly flat. After that I will create an epoxy step on the shaft so that the CD Turntable remains at the optimal height to the shaft. You could superglue it in place as well.

Anyway, I hope this helps other folks who run into this problem.
Click to expand...

Thanks for this information.
Even I take extremely care to pack everything very well, some packages are reaching destination not a very good shape. :-(

Regards,
Tibi
 
iTiberius

iTiberius

Member
Joined 2005
Sean Henderson said:
Tibi or anyone else...

Referencing the User Manual, I just want to make sure I am wiring the transformer to the Power Supply Module correctly.

Viewing the actual Power Supply Module in that SAME orientation as the Diagram, the silk screening marking AC2 is to the left of J7 and the the Blue wire is connected to the J7 input nearest the AC2 marking and the Brown wire goes to the input nearest AC1 to the right of J7...is this correct?

I have the Green/Yellow and White wires going to the center input on J7.

Hope to get this thing fired up this week and fine turn the CD Turntable height as needed.
Click to expand...


Hello Sean,

As per https://docs.google.com/document/d/1vlabZc_1If3x12ox2A5ECZxC0HLGnuOWdM-j9X4b7Q0/edit

Page 12 you have a primary and a secondary.
For 110-120V on the primary you may use yellow with black or black with white. It is symetric.

On the secondary you need to have grey and green connected together on the center point. Brown and blue does no matter how to connect them.

Regards,
Tibi
 

Attachments

  • trafo.png
    trafo.png
    56.3 KB · Views: 362
S

syklab

Member
Joined 2009
Sean Henderson said:
Since this was reported by at least one other person, I decided to take some measurement off 2 spare Sanyo Transports for reference. Measured with a dial caliber from the top edge of the CD Turntable where the CD will rest on, to the top of the stamped metal "chassis", both of my samples measure 19.58 mm.
Click to expand...
Hi,
Is the 19.58mm measured between point A and B of the picture below?

CD.jpg


Thanks
 
S

Sean Henderson

Member
Joined 2004
syklab,

The 19.58 mm was measured from the TOP of the CD Turntable, point A, without a CD or the Clamp resting on it...to the top of the chassis, or point B in your photo.

If it is easier to measure this way...from the Bottom of the CD Turntable to the top of the chassis, or point B in your photo, the measurement is 17.34 mm. For reference, the thickness of my CD Turntable samples is 2.24 mm.

syklab said:
Hi,
Is the 19.58mm measured between point A and B of the picture below?

CD.jpg


Thanks
Click to expand...
 
dimkasta

dimkasta

Member
Joined 2010
I tried today with a self-made puck made out of 4 CDs glued on top of each other. The wobling was reduced significantly (some remained probably because I glued the CDs in a harry and they are not identical), although the motor was obviously coping to move the weight. I tried with 3 and it seems to behave nicely. Now I am looking for a way to keep them centered. I m thinking of some plastic pieces glued to their edge.

With this change it managed to read some more CDs. However it still refuses to read the Metallica - Metallica CD. It simply quits after a second or two and the CD keeps spinning with inertia until it halts after slowing down but by bit by friction.

I tried to move the plastic head a bit further from the metal plate to match the measurements given above (needs less than half a mm), but it just won t move. I have applied some significant force to it including some self-devised levers to try to move it from its inner plastic and not stress the disc base, but it just won t move... I m scared I might break it if I try any harder.
 
Last edited:
You must log in or register to reply here.
Top Bottom