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N_Cook N_Cook is offline
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Default Hacking a Denon RCD M35DAB, CD of 2006, so far so good

On 31/08/2013 02:00, Arfa Daily wrote:


"N_Cook" wrote in message
...
On 30/08/2013 01:28, Mark Zacharias wrote:
the usual extras about 90 pounds. Much more interesting playing
around/hacking. No guarantee that there is not some sort of random ps or
other surge that knocked out the original laser and co


The number on the Denon Sanyo one is SF-P101N but as that is on the
plastic of the body rather than a label, there may be a lot of flavours.
The optical unit just carries the laser , the receive photodiode
matrix , and the focus+track coils. Could the track coil polarity be
wrong?


No

2 minutes in could be where the sledge has to definitely have moved as
come to the limit of the coil shift ambit, worth a try . Now what
differentiates the orthogonal coils? A small voltage in each to see if
the lens moves vertically or radially I suppose. Nothing like
heuristics, its not as though the owner is paying for my farting about.


Errr, I'm not getting this. The SF-P101N is a well-known Sanyo laser,
and available - even as a complete sub-deck - for just a few quid -
literally ...

You are slightly correct in there being more than one flavour. There are
in fact two. One has a 15 pin connector, and the other, a 16 pin. This
is always detailed where they are offered for sale, so there should be
no issue getting the right one.

http://www.ebay.co.uk/itm/Optical-La...item3383bb1e50


http://www.ebay.co.uk/itm/SANYO-CD-V...item3a5e6e9d65


http://www.ebay.co.uk/itm/SF-P101N-C...em416 ed6a41e


http://www.ebay.co.uk/itm/SF-P101N-C...em51a 83d29c3


Arfa


In the meantime
It all seems mighty weird that you can progress flawlessly through the
test routines along with never any error statements but the unit does
not work.
Test routines pass byte info out on focus balance, focus gain,track
balance , track gain , focus offset , track offset,RFRP and a routine
that sums errors in a 2 second sample. Go into the auto adjust routine
after adjusting the power pot and the values change. I don't know what
100% error figures for 2 seconds would be ,but readings about 023,000
one time then adjust pot and then average about 035,000. So if 6 digits
is 100% then about 2 to 4 percent. What would a representative figure be
for dust,microscratches,scatter etc ?