POSIFLEX Business Machines PST KB136 manual 3c

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).

Keyboard frame

Tab in the guide hole

Fig. 6 – 4

6 - 5