118 16900 Series Logic Analysis Systems Installation Guide
6 Using and Updating the Logic Analysis System
5 Remove the CPU tray.
a If you have a 16900A or 16902A, use the tray lever to disconnect the
CPU board from the module interface board then slide the tray out
being careful not to catch the loose cables on anything.
b If you have a 16902B or 16903A, slide the tray out being careful not
to catch the loose cables on anything.