HEIDENHAIN TNC 620 User Manual page 63

Fundamentals | Visual display unit and operating panel
Exchanging keycaps
If you need replacements for the keycaps of the keyboard unit,
contact HEIDENHAIN or the machine manufacturer.
Further information: "Keycaps for keyboard units and machine
operating panels", Page 514
The IP54 protection rating cannot be guaranteed if the
keyboard is missing any keys.
To exchange the keycaps:
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 01/2022
Slide the keycap puller
(ID 1325134-01) over the
keycap until the grippers
engage
Pressing the key
will make it easier
to apply the keycap
puller.
Pull off the keycap
Place the keycap onto the
seal and push it down
The seal must
not be damaged;
otherwise the
IP54 protection
rating cannot be
guaranteed.
Verify proper seating and
correct functioning
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