Denon DN-961FA - reading problems

[redrabbit]

This older broadcast type player has trouble reading 75% of my discs.
It will either initially read the disc, or it will fail/error.

What adjustments can I preform ?

Understand that I am not too familiar with the insides of CD players, but I have an analog scope + other test gear....and my friend has some CD alignment discs.

He also may have some info on the location of the alignment pots...maybe not though.

http://www.d-mpro.com/users/folder.asp?FolderID=1510&Tab=Data+Sheet

Thanks,

=RR=

 

[redrabbit]

Alright, so this seems to be a common problem/question, here in this forum.

I wonder why no "sticky" , for common troubleshooting and maintenance of optical reading players ?

Here is a troubleshooting link, with thorough descriptions:

http://www.repairfaq.org/sam/cdfaq.htm#cdpre


=RR=

 

[redrabbit]

Opened it up, cleaned the purple glass eye w/isopropyl 99%.
Seems to play more CD's, but it spins up 2 or 3 times to read.

Laser assembly is a KSS-240a. Three trim pots on it.

=RR=

 

[GlidingDutchman]

Hello,

On the right side of the unit's chassis (from front) there are two trim pots for focus and another setting I forgot. Twiddle those two pots carefully for best reading results.

I once owned 7 of these funky little players.

GD