Apex DVD Player model AD-1110W

[Brad]

Hi,

I have an Apex DVD model AD-1110W in my shop for service.
Note: I seldom service DVD players. When I insert a DVD or
CD, the message says, "Loading" and after a small delay,
"No Disc".

I cleaned the optical pickup lens even though it looked clean.

When I insert a DVD or CD, the optical pickup slides in and out, but
the disk doesn't spin. I checked the motor for freedom of rotation.
I checked voltages from the power supply and all were good except
+12V & -12V which measured +11.17 & -11.07. I "scoped" all the
voltages to check for ripple or noise, but all were "clean".

Is it possible for a DVD player to check for the presences of
a disc simply by the reflection without rotating the disc?

Thanks in advance, Brad

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[Meat Plow]

Hi,

I have an Apex DVD model AD-1110W in my shop for service.
Note: I seldom service DVD players. When I insert a DVD or
CD, the message says, "Loading" and after a small delay,
"No Disc".

I cleaned the optical pickup lens even though it looked clean.

When I insert a DVD or CD, the optical pickup slides in and out, but
the disk doesn't spin. I checked the motor for freedom of rotation.
I checked voltages from the power supply and all were good except
+12V & -12V which measured +11.17 & -11.07. I "scoped" all the
voltages to check for ripple or noise, but all were "clean".

Is it possible for a DVD player to check for the presences of
a disc simply by the reflection without rotating the disc?

I suppose it could check for a disc first then spin it to check compliance.

 

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Yes.... the laser checks for a reflection and tries to focus on the
disc, if successful the motor will spin. Disconnect the wires going
to the spindle motor and use a small 9V transistor battery to power
it .... if it doesn't spin, the motor is bad. You can go to the
website for this newsgroup at
http://www.repairfaq.org/
there with some of your search time you will find a wealth of CD
player repair and troubleshooting information.
electricitym