Hey all ,aka chop5 here.
Wanted to make a new thread but decided to add to this one.
I finally got my hands on a laser issue unit of ebay last month,cheap.
Thought finally i will get to tackle a new project on a system i desperately wanted but couldn't afford a working one.
The unit was a virgin,never opened. This was a bonus i wasn't expecting. My heart started to beat with excitement.
Opened it and took out the laser unit and did some preliminary scans:
Notice the technics chips all over. What you cant see is under the laser mechanism silk screened on the board is a huge M that stands for Matsushita. Technics and Matsushita are commonly known as Panasonic.
First clue to laser replacement. The floppy drive is also Matsushita.
Serial numbers all over the board and laser but they showed no google results and were probably fujitsu designation numbers.
The cd mechanism is soldered onto the motherboard which i found unusual for a machine of this era. And there is a small rubber belt connecting the sled motor to the laser. The belt is old and cracked so i thought this was a possible reason for the failure. Began searching on here for a replacement belt:http://www.kenselectronics.com/lists/belts.htm
The hard solder to the board and the rubber belt is what i would expect to find on a cd player from the 1980's.
So began the search for all the lasers used in panasonic equipment for that era. I figured from 1991 to 1996
Following this helpful site that lists optical pickups for many cd players:http://www.vasiltech.nm.ru/files/cd-players/CD-Player-DAC-Transport.htm#Thttp://www.marantzphilips.nl/the_complete_d_a_dac_converter_list/#T
And then narrowed down the years with this sites help:http://www.vintagetechnics.stereomanuals.com/cdplayers/index.htm
I got a nice list of possible cd units to look for at thrift stores and inspect the insides.
Also looked up laser serials on the web and looked at many optical pickups made by panasonic. I haven't found an exact match yet but i think its in the RAE line of panasonic lasers. Example is the RAE-0152. But it has a plastic bottom and the marty's laser has a metal bottom. Could have been custom made with a metal bottom for longevity.
I also looked up panasonics attempt at a console,the 3do fz-1. I was bummed out to find out the fz-1 uses a sanyo laser. If panasonic used a foreign laser then the marty might be also.
Also looked up the fm towns 2 pc that was made a year earlier than the marty hoping its laser was the same model and would have more documentation.http://img.photobucket.com/albums/v238/jetbue7/fmful2.jpg
The picture to the far left is the cd mechanism. Its freakin huge! No way that could be a marty laser. I continued this way for a while and bought a thrift store technics cd player and dissected it. Its laser is also very similar to the marty's and has no serial numbers. I guess it was common for panasonic to make lasers and not put serials on them. This gave me hope that i was still on the right path.
But first i needed a hi res scan of my laser removed from the mechanism. I prepared to desolder it.
Noticed i didn't do basic fixes for a cd unit. So i powered the unit holding down the door sensor. Noticed the laser bobbed up and down and had light. This was great and was confirming my belt theory. Next i tried my best to move the laser from its position. It took a while and pencil eraser to nudge the other end of the belt gear thingy to make the laser move. Put everything back together and powered it up with a burned game and guess what?
It worked. Thats what i like about virgin system that no one has worked on before. If they are kept in a closet for years the moving parts get stuck and all they need is a little nudge.
I still need those scans of the laser to continue my search. I may be a bakka gaijin but im not stupid enough to desolder a working laser from the marty. Anyone want to continue the search? Or send me their non working marty's laser board so i can work on it? Il still search around for cd players. Here is my list so far:
technics model number:
sl-pg340 possible rae0111z
sl-pd667 possible RAE0113Z twice on google
sl-pd827 possible SOAD70A
look for panasonic/matsushita/technics cdroms from that era,1991 thru 1996.
I hope someone finds this info useful.
Im off to play with my new toy
Update september 7,2007
Finally found a date for my machine. underneath the pcmia card slot looking on the top is a paper sticker says:
the last set of numbers is what interests me. when i google i come up with a fujitsu cd rom replacememnt part being sold by two places. Its a bit pricey for me to order and see if it is but we will see over time.http://codemicro.com/store/check_price.php?partid=1205241