From: email@example.com (firstname.lastname@example.org)
Subject: CDRW does not read cds
Date: 24 Sep 2002 13:06:14 -0700
NNTP-Posting-Date: 24 Sep 2002 20:06:14 GMT
I have a panasonic (matshita/matsushita) CDRW , model CW-7585, that
was working fine on winXP Pro and Roxio Easy cd creator 5 platinum.
Since yesterday it won't regognize cd's blanks or not. I opened it to
see if I could fix it using the extremely helpful instructions at
http://www.repairfaq.org/REPAIR/F_cdfaq.html. This is what I found:
Whenever I close the tray, (with/without a cd in it), the pickup moves
back and forth on the rack, positions at a specific location and then
stops. Then nothing happens. (Normally, the cd should start spinning).
Folowing the tips at
http://www.repairfaq.org/REPAIR/F_cdfaq5.html#CDFAQ_006 (9.3 Procedure
for validating the startup sequence ), I did clean and lubricate and I
verified that the pickup could move: I carefully cleaned the lens
using a Q-tip slightly dipped in alcohol, and then I lubricated the
racks using just a bit of fine oil, and some gears using a bit of
fine grease. I also turned some gears and made sure they could turn
However, I am not sure how to verify that the pickup can attempt to
focus:When there is no cd, the lens does not seem to move up/down ,
but that could be because it does not sense a cd present. When I put a
cd on, I cannot see anything since the cds are covered on the
backside. I have a see-through plastic the shape of a cd(used as a
plastic cover in a 50-cd cone) but I am not sure if it can fool the
sensor (if it has one) , since the sensor probably senses reflected
light, and the see-through plastic may not reflect the light.So is
there a way to verify that the lens moves up/down?
About the laser, I could not see any red spots in a dark room,
whenever I closed the tray (with/without a cd in). Maybe the absence
of a cd did not power on the laser, and its appearance covered the
I think it all boils down to fooling the CDRW into thinking that there
is a cd present. Thus I can verify that the lens moves up/down, and
that laser is emmitted (maybe using a camcorder: see through it a beam
projected on a piece of paper over the lens).
Note: I bought the CDRw about 2 years ago, and recorded less than
50cds on it. The last 3 months, every weekend I've been travelling to
a city 2 hours away , carrying my pc with my in my car. Is it possible
that a knock on the computer shook the CDRW?
I appreciate your patience in reading this posting, and I am grateful
for any replies.