POSIFLEX Business Machines PST KB136 - Manual (Page 35)

6 - 5
TM
Fig. 6 – 3c
It is very important to correctly orientate the key tops before they are inserted
into the keyboard frame. Failure to do this could result in permanent damage.
Looking into the guide hole on the keyboard frame, there is a tab inside the bottom
side wall (ref. Fig. 6-4). Examining the bottom square stem of a single key top, there
is a springy latching tab on one side (ref. Fig. 6-5a). Checking the bottom of a double
key top, there are two sides of the matching stem (besides the patented balancing
mechanism) constructed with the springy latching tab (ref. Fig. 6-5b).
Fig. 6 – 4
Tab in the
guide hole
Keyboard frame