Pick Off Problems on SX-70 Sonar (AutoFocus fixed!!)(SLR680 Added!!) (updated Feb 2017)

Discussions on the SX-70 and the entire series 500, 1000, 2000 ...
User avatar
Meaulne
Konica Instant Press
Posts: 5909
Joined: Mon 04 May 2009 / 23:53 pm
Location: RP SO
Voir la galerie photo de ce membre

Postby Meaulne » Sat 20 August 2016 / 11:03 am

mimi_club wrote:mouse? same parts??? can show that part?

Sadly , I've dismounted a lot of old ball mice, there is encoder wheel and optical pickoff inside but not at all the same shape
mimi_club wrote:Indeed I feel some strange with the pick off.... it 'seems' that there is no contact except those cables. How it transmit signals???

(p.s. my science score when i was in high school is XP )

it's an optical device, it counts the holes of the encoder wheel(the beam passes through) , the more it counts holes, farest is the subject is (or the inverse I dont remember...)
Comme sur les sites de vielles bagnoles ... on sait bien que maintenant y'a mieux...
Mais question Radio je reste Fidel à ....
https://www.radiobeton.com/www/
"un bibelot vient de nulle part, mais va sur la cheminée" Fred

User avatar
scaf
Polaroid The Reporter
Posts: 2845
Joined: Sun 04 November 2012 / 22:50 pm
Location: Auvergne allant du Puy de Dôme jusqu'aux Alpes
Voir la galerie photo de ce membre

Postby scaf » Sat 20 August 2016 / 11:43 am

Pickoffs are (often ?) infrared light emitor and receiver.

For example : ball mice. The most often pickoffs aren't in one piece : emitor and receiver are separated and soldered on the board.
If you look at the pickoff (while on) with a camera (smartphone is ok), you'll see the emitted light.
'Faut bien secouer l'pola sinon l'image, elle reste en bas

Convention de nommage de photos argentiques numérisées

Que se passe t'il pour la grenouille qui veut se rendre aussi grosse que le bœuf ?
Elle éclate.
C'est joli, mais pas très efficace.

User avatar
mimi_club
Po......
Posts: 45
Joined: Sat 26 December 2015 / 14:14 pm
Location: British-Hong Kong
Voir la galerie photo de ce membre

Postby mimi_club » Sat 20 August 2016 / 17:31 pm

@Meaulne @scaf

Oh really mouse ball sensor??

Image
Image
Image

Hmmm..... can imagine which part is...... :oops: :oops:
China(支那)-occupied-Hong Kong

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Sat 20 August 2016 / 18:43 pm

Image
           \\\///
         ( @ @)
....oOOo.(_).oOOo....

User avatar
mimi_club
Po......
Posts: 45
Joined: Sat 26 December 2015 / 14:14 pm
Location: British-Hong Kong
Voir la galerie photo de ce membre

Postby mimi_club » Sun 21 August 2016 / 05:11 am

Daniel wrote:Image


Image

Seems it is not easy to put them together to match the sonar, especially they have to be very accurate, I think.
China(支那)-occupied-Hong Kong

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Sun 21 August 2016 / 10:15 am

The components of your photos, photo diode and transistor photo, include a minimum
optical which was previously located in the black case forked. If the "signal" IR does
not pass simply realign by slightly twisting their legs.
           \\\///

         ( @ @)

....oOOo.(_).oOOo....

User avatar
mimi_club
Po......
Posts: 45
Joined: Sat 26 December 2015 / 14:14 pm
Location: British-Hong Kong
Voir la galerie photo de ce membre

Postby mimi_club » Sun 21 August 2016 / 19:16 pm

Daniel wrote:The components of your photos, photo diode and transistor photo, include a minimum
optical which was previously located in the black case forked. If the "signal" IR does
not pass simply realign by slightly twisting their legs.



I am studying that 'fork' - holding that pair of components. I am not sure if it is difficult or not to make something like that, to hold those 2 parts.

Hmmm... it seems that it is not easy to find those ball mouse. Maybe at the 2nd place. Of course it is much cheaper to get those at ball mouse, other than a damaged camera.
China(支那)-occupied-Hong Kong

User avatar
Meaulne
Konica Instant Press
Posts: 5909
Joined: Mon 04 May 2009 / 23:53 pm
Location: RP SO
Voir la galerie photo de ce membre

Postby Meaulne » Sun 21 August 2016 / 23:06 pm

perhaps the original component is still existing ?
searching with "electronic optical fork component" I found this one
http://www.conrad-electronic.co.uk/ce/en/product/179999/Omron-EE-SX1041-Fork-Light-Beams
again it's not the same shape ... and no time to search again this day, but perhaps a with more search we can found the exact component
Comme sur les sites de vielles bagnoles ... on sait bien que maintenant y'a mieux...
Mais question Radio je reste Fidel à ....
https://www.radiobeton.com/www/
"un bibelot vient de nulle part, mais va sur la cheminée" Fred

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Mon 22 August 2016 / 02:40 am

http://sensing.honeywell.com/honeywell- ... 4-6-en.pdf

Nothing Honeywell there is something fun, without counting on the different supply voltage

:)
           \\\///

         ( @ @)

....oOOo.(_).oOOo....

User avatar
scaf
Polaroid The Reporter
Posts: 2845
Joined: Sun 04 November 2012 / 22:50 pm
Location: Auvergne allant du Puy de Dôme jusqu'aux Alpes
Voir la galerie photo de ce membre

Postby scaf » Mon 22 August 2016 / 09:01 am

AFAIK, electronics before the 90's were all 5V ?
'Faut bien secouer l'pola sinon l'image, elle reste en bas

Convention de nommage de photos argentiques numérisées

Que se passe t'il pour la grenouille qui veut se rendre aussi grosse que le bœuf ?
Elle éclate.
C'est joli, mais pas très efficace.

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Mon 22 August 2016 / 17:14 pm

I'm not sure, and for special series for Polaroid like the condenseurs
in cameras like the 250 in the shutter for example.
           \\\///

         ( @ @)

....oOOo.(_).oOOo....

User avatar
mimi_club
Po......
Posts: 45
Joined: Sat 26 December 2015 / 14:14 pm
Location: British-Hong Kong
Voir la galerie photo de ce membre

Postby mimi_club » Mon 22 August 2016 / 17:42 pm

I google for a while..... not much information.
This seems to be something discontinued.


I really hope more ppl come to this thread and provide more information on the 3-5 ft (1-2 metre) issue, to help more ppl fix their sonar sx-70's.
China(支那)-occupied-Hong Kong

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Mon 22 August 2016 / 23:17 pm

you also have to verify the contact limit switch which tells that the objective is set to infinity.
           \\\///

         ( @ @)

....oOOo.(_).oOOo....

User avatar
mimi_club
Po......
Posts: 45
Joined: Sat 26 December 2015 / 14:14 pm
Location: British-Hong Kong
Voir la galerie photo de ce membre

Postby mimi_club » Sun 16 October 2016 / 16:35 pm

One of my friends asked me:-


Sonar SX-70 - When he push the red button, the lens move forward... without focusing anything, just move until the lens moved to the most front end.

Is that similar to the "3-feet-problem"? Can this be fixed by replacing a new Pickoff?

orz
China(支那)-occupied-Hong Kong

User avatar
Daniel
Polaroid 195 NPC
Posts: 3822
Joined: Sat 06 February 2010 / 16:34 pm
Location: Devant mon écran. . . .
Voir la galerie photo de ce membre

Postby Daniel » Mon 17 October 2016 / 12:24 pm

Check the end switch
           \\\///

         ( @ @)

....oOOo.(_).oOOo....


Return to “Polaroid® SX-70 & 1000, 2000... Land Camera”

Who is online

Users browsing this forum: No registered users and 1 guest