330 8163A/B, 8164A/B, 8166A/B User’s Guide
11 Installation and Maintenance
1 Untighten the retaining screws, see Figure 205 on page -330, that
secure the module in the instrument.
Figure 205 Back Panel of 8164B Lightwave Measurement System
Figure 206 Side View of a Back-Loadable Module
2 Pull the module out of the mainframe, using the handle, being careful
to keep the module completely flat.