"Gaetan Mailloux" wrote in message
...
Hello

A friend of mine do have a kenwood DP-460 cd player with a cd playing
problem.

My friend was sure that the laser was burned, but I
decide to test his Kenwood cd player, wen I use commercial music cd it
work perfect, but wen I use burned cd-r music, this Kenwood cd player can
not play more than 7 track, after 7 track it do jerky sound with the
music, it look like it can not follow those track.

Any hints of what could be the problems ?

Here is a link to a part of the schematic of the kenwood DP-460 cd player.

http://img101.imageshack.us/img101/4...60smallfy3.jpg

Thank

Bye

Gaetan


Likely to be poor laser performance. CD-R discs are nowhere near as
reflective as commercial 'pressed' types, and many players that were not
specifically designed to cope with them, struggle, particularly if the laser
is marginal, or even dirty. Have you, as a first move, tried cleaning the
lens ? (properly with alcohol etc, not a cleaner disc).

As you get further into a disc, its rotational speed falls to maintain CAV.
If the performance of the spindle motor is anything less than perfect, its
speed can be minutely erratic. If the performance of the laser is down as
well, then when you combine these factors, which are typically present in
any player older than a few years, the result tends to be poor tracking
performance / general playability problems on late tracks, and this will be
exacerbated by use of CD-R discs.

Arfa