Hello,

Before you start playing with adjustments, I would suggest cleaning the
sled rails and lens as suggested by other posters. There is also a
common problem with the focus coil drive transistors because an
under-sized transistor was used. (This problem also occurs in the 5000
and 5440) Replace Q102 with a 2SD669 or similar transistor, and replace
Q103 with a 2SB649 or similar. Also look for overheated solder joints
in the area of the transistors.

Regards,
Tim Schwartz
Bristol Electronics

Gyro wrote:

Hi guys.

I'm searching for the above since the player has started skipping towards
the end of a CD (tracking offset problem?).

The board is rev. issue 1A and there are five potentiometers; VR101, 102 to
105. Which one solves the tracking problem?

Any help appreciated :-)

Andreas

Hi guys.

Thanks very much for the suggestions. I forgot to write that I have already
cleaned the lens; it didn't "look" dirty at all, so I assuming it's another
problem. It there an easy way of ridding the player of the skipping? It
usually begins halfway through a normal length CD.

Thanks again for the help :-)

Andreas


"Tim Schwartz" wrote in message
...
Hello,

Before you start playing with adjustments, I would suggest cleaning the
sled rails and lens as suggested by other posters. There is also a
common problem with the focus coil drive transistors because an
under-sized transistor was used. (This problem also occurs in the 5000
and 5440) Replace Q102 with a 2SD669 or similar transistor, and replace
Q103 with a 2SB649 or similar. Also look for overheated solder joints
in the area of the transistors.

Regards,
Tim Schwartz
Bristol Electronics

Gyro wrote:

Hi guys.

I'm searching for the above since the player has started skipping
towards
the end of a CD (tracking offset problem?).

The board is rev. issue 1A and there are five potentiometers; VR101, 102
to
105. Which one solves the tracking problem?

Any help appreciated :-)

Andreas