VRDS 10 doesn't spin up

[waltube]

Hello,

I have seen some thread about VRDS10.
In my situation the tray is working fine. After power on the laser moves inside and the lens moves three-four time up and down as manual details.
With the cd inserted the mechanism push the cd up, the laser assembly goes inside but the motor doesn't run.
I checked ( with service manual) the test point but only the first step because the others must be verified with the motor running

Any idea?

There is a way to check the light of the laser?

Thanks

Walter

 

[ManoloMos]

If the lens moves when you start up the cd, the most probably is laser don't read. Try clean lens, and the lens that is below the upper lens.
See lubrication too. If not read, the laser pickup is worn out.

 

[MAAC0]

You have to test for focus. If no focus signal motor doesn't spin.
Check if there is a focus test point than goes high or low when focus OK.
Clean the lens, check on a dark room from the side at 45 degrees or with some smoke or paper above if the laser actually turns on.
Do You see the red light? DON'T STARE AT THE LASER FROM ABOVE !!

 

[waltube]

Thanks for help.

I will check accurately the laser.
I haven't seen the light but I need to be sure.
The problems are the spare parts

Walter

 

[waltube]

On service manual all the test and verifications of signals are with the cd in play!
There isn' t a troubleshhoting.

Walter

 

[waltube]

Hi

I have checked the laser beam but no light
Also I test the voltage on R407 and it reaches the value od 1.044 volt only when I press eject/load
The laser moves inside then up/down three times , at this moment I can read the voltage.
Divided by 22 ohm I got 47 mA that is fine with the value written on label of the laser, 465.
But the motor doesn't spin up

So I believe that the laser is broken

Walter

 

[ManoloMos]

Yes, all point to broken laser. Around 2V is the typical voltage at the diode laser, you should measure it. A check up of the laser power circuit is not a bad idea too.
The last chance is to move the potentiometer of the power laser and increase power.

 

[waltube]

Thx Manolo
the pot of power is close to the laser or on main board?

Walter

 

[ManoloMos]

In the laser itself, a tiny brown potentiometer.

 

[sfc1000]

There could possibly also be another error: over time it may not always be the laser diode that burns out first, but the focus suspension that sinks down. In that case, the laser diode will rattle a bit (it out), and is in a lower position, so that it cannot reach a upper position where it can fokus on the cd dots/toc etc.

Cheers,
Redfox.