Author Topic: cpc pics  (Read 2180 times)

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Offline arnoldemu

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cpc pics
« on: 09:44, 24 October 10 »
I don't know if they are good enough quality for the wiki.
 
  But here are some pics for your interest
 
  underside of cpc664 keyboard (big screws holding it to case, tiny screws   to get to membrane. membrane to right, fixed into motherboard with some   kind of plastic clip)
  http://www.cpctech.org.uk/pics/100_3413.JPG

A closer up of the membrane connection.
http://www.cpctech.org.uk/pics/100_3414.JPG
  http://www.cpctech.org.uk/pics/100_3404.JPG
   
A closer up of the part number on the keyboard (already added to wiki):
http://www.cpctech.org.uk/pics/100_3415.JPG
   
Power switch with front released slightly (see the clips to hold it on):
http://www.cpctech.org.uk/pics/100_3419.JPG

Other pics were too blurry


  CPC664 "in my workshop"  :laugh:
http://www.cpctech.org.uk/pics/100_3426.JPG
L@@K Rare UK Keyboard!!!!!

Some keyboard views a bit blurry
http://www.cpctech.org.uk/pics/100_3431.JPG
  http://www.cpctech.org.uk/pics/100_3432.JPG
http://www.cpctech.org.uk/pics/100_3435.JPG

464+ opened up, yes another rare UK keyboard  :laugh:
The tissues are there for cleaning (not for excitement)
http://www.cpctech.org.uk/pics/100_3445.JPG

The cleaned membrane exposed
    http://www.cpctech.org.uk/pics/100_3448.JPG
 
Closer views of membrane
http://www.cpctech.org.uk/pics/100_3449.JPG
  http://www.cpctech.org.uk/pics/100_3450.JPG
    http://www.cpctech.org.uk/pics/100_3451.JPG
   
    closer up of the plastic keys. Now this isn't very good :(
http://www.cpctech.org.uk/pics/100_3452.JPG

Essentially under each key are 3 plastic "support" or pieces. When the key is pressed the spring hits this and bends.
The bending part then makes contact with the membrane.

Different to cpc6128 keyboard construction.

This part clips over membrane.

To clean:

Remove keyboard and detach from motherboard.
Turn it over.
Gently click each plastic tab until the top plastic key part releases from the metal part.
Now, vacuum clean or brush off fluff on plastic key part.
Put membrane flat against metal part and clean (using some spit or some mild detergent) in a gentle left-to-right action cleaning away dust and dirt.
Clean both sides this way.

To put back together.
Turn plastic key part upside down.
Lay membrane over it so that the plastic guide pieces fit into the holes in the membrane
put metal piece over the top gently and when happy it is all in position gently clip back in.
Job done.





   
 
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Offline Sykobee (Briggsy)

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Re: cpc pics
« Reply #1 on: 16:59, 25 October 10 »
Nice pictures. Years of use has certainly made their mark on the keyboards! ;-)
What is IC4 (by the Z80A) for on the 464+ screenshot?

Offline Bryce

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Re: cpc pics
« Reply #2 on: 17:28, 25 October 10 »
Hi Briggsy,
         The 464+ and 6128+ used the same PCB. On a 6128+ IC4 is the µPD765 (Disc Controller) and would be soldered in this location.

Bryce.

Offline Sykobee (Briggsy)

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Re: cpc pics
« Reply #3 on: 17:31, 25 October 10 »
Ah, cheers!

Offline Gryzor

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Re: cpc pics
« Reply #4 on: 10:27, 26 October 10 »
  CPC664 "in my workshop"  :laugh:
http://www.cpctech.org.uk/pics/100_3426.JPG
L@@K Rare UK Keyboard!!!!!

:D :D

I love the 664, such a poor creature...

I've seen this before - is this the original space bar? Why would they use a different kind of plastic?

Offline arnoldemu

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Re: cpc pics
« Reply #5 on: 11:28, 26 October 10 »
:D :D

I love the 664, such a poor creature...

I've seen this before - is this the original space bar? Why would they use a different kind of plastic?
well I've not changed the space bar.

The computer was in the attic and got some dust on it, so really I could do with cleaning it up a bit more.

Any suggestions, maybe some kind of solvent would help clean it up better?


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Offline Cpcmaniaco

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Re: cpc pics
« Reply #6 on: 14:54, 26 October 10 »
The space bar looks like the space bar of the german 664.
 

Offline Gryzor

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Re: cpc pics
« Reply #7 on: 20:13, 28 October 10 »
I've seen such colour differences before; I do think Amstrad used different kinds of plastic...

@arnoldemu: well, the solution that has been doing the rounds for a couple of years now should really help...