Editing Futaba MA series alternate action

{{infobox dswitch
| title               = Futaba lock
| image name          = Futaba lock -- top.jpg
| manufacturer        = [[Futaba]]
| product code        = 
| family              = [[Futaba MA series]]
| switch type         = [[Alternate action]]
| discontinued        = 
| contact mechanism   = [[Metal leaf]]
| switch mount        = [[Plate mount]]
}}

'''Futaba MA series alternate action''' is an [[alternate action]] switch in [[Futaba MA series]].

==Variants==
===Mk I===
The Mk I switch was a peculiar adaptation of the regular momentary switch. The switch shell contains a latch track. Into the slider is placed a platform that bears the latch arm; a small wire rod appears to be used to hold the arm in the platform. The keycap mount of the slider is not known, but the platform itself has a square recess and requires custom keycaps.

The switch weight is 130 gf.

<gallery widths=250 heights=187>
File:NEC PC-8801mkII -- latching action switch.jpg           | Mk I switch from an [[NEC PC-8801mkII]] keyboard
File:NEC PC-8801mkII -- latching action switch, close-up.jpg | Close-up
</gallery>

===Mk II===
The Mk II switch has the latch arm mounted directly onto the slider; as such, this does not leave sufficient room for the standard negative Futaba keycap mount, so the front slot of the cross is shifted to the right. As a result, a custom keycap mould is required, and not the same custom keycap mount as required by the Mk I.

The arm pivots at the top of the slider, and runs down into a latch mechanism inside the front of the shell.

<gallery widths=250 heights=187>
File:Futaba lock -- top.jpg 
File:Futaba-Lock-Partially-Open.JPG          | Rivets clipped to allow opening
File:Futaba-Lock-Plunger-And-Base.JPG        | Note: Broken lock arm. Missing pin that runs in lock channel.
File:Futaba-Lock-Plunger-And-Base-No-Arm.JPG | Lock arm removed
File:Futaba-Lock-Base.JPG                    | Switch base with contact plates and inner spring.
File:Futaba-Lock-Upper.JPG                   | Lock channel in switch upper
File:Futaba-Lock-Channel.JPG                 | Lock channel removed from upper.
File:Futaba-Lock-Upper-With-Plunger.JPG      | 
</gallery>

==Keyboards==
*[[Focus FK-8000]] (Mk II)<ref name="Trent">Deskthority – [http://deskthority.net/photos-videos-f8/fk-8000-t2027.html FK8000!]</ref>
*[[Focus FK-9000]] (Mk II)<ref>Deskthority – [http://deskthority.net/photos-f62/futaba-lock-switch-t11820.html Futaba Lock photos]</ref>
*Some [[Focus FK-5001]]s (Mk II)<ref>Deskthority – [http://deskthority.net/keyboards-f2/question-on-focus-5001-9000-keyboards-t5734.html question on Focus 5001/9000 keyboards]</ref>
*[[ETC Power Glide 105]] (Mk II)
*[[NEC PC-8801mkII]] (Mk I)

==References==
<references />

[[Category:Futaba switches]]
[[Category:Alternate action switches]]
[[Category:Metal contact switches]]
[[Category:List of all keyboard switches]]