NEC ux5000 Hardware Manual page 233

Chapter 4 - Terminals and Optional Equipment
5. Insert the tabs of the new lower panel key module located at the top of the module into the notches on
the terminal.
Figure 4-12: INSTALL NEW LOWER PANEL
6. Push the lower portion of the module down until it clicks into position.
Figure 4-13: PRESS RETROFIT LOWER PANEL INTO PLACE
7. Press the buttons one by one to make sure that they are not stuck or that they have too much play.
8. Replace the designation sheet and cover, and reattach the side panel.
Chapter 4 4 - 15