Neither me or owner will spend out on a new optical unit (failed laser),
big spondulics. But a near industry standard KSS 213C looked somewhat
similar , so I tried it out. This one laying around , unknown condition,
from some scrapped something. The ribbon feed lines for the 3 laser pins
matched , the other 2 deck motor+switch leads matched up, so tried it
out. Laser lit but logic of the end stops wrong so swapped the optical
unit across to the original (scrapper would not have mechanically fitted
in the Denon anyway). Required some bodging to fit, straightforward but
too much for detailing here, but sledge etc worked .
Adjusted power pot and cleaned lens and now consistently reads data
track and plays about first 2 minutes track1 of any CD I try, faulters
and stops, will not play any track 2 or higher.
I suspect the registration of the centre limit switch is out, but could
be a problem with the rack although powers up and down the slide without
incident with only 2 volt on the motor, but I will try marking rack and
cog of the 2minute stoppages. I assume a new (cheap) KSS 213 would show
the same stoppage.
So how to adjust the end stop , ? pieces of shim material added and
subtracted in the gap between sledge and leaf switch and suck it and
see? or some other problem likely?