Operator`s manual

2.6.8 Installing the R400X Expander
If you are not installing an R400X expander go to Section 2.7. If you are
installing an R400X expander with your VAX 4000 Model 500 system
perform the following:
1. Begin the installation of the R400X expander as explained in the
R400X Expander Installation manual. Make sure you connect the
expander cables that will be connected to your system.
2. Return to this manual to connect the following expander cables:
• Q–bus cables
• DSSI Cable
• KZQSA external cable
• Power control bus cable
• Ground cable
3. Complete the installation of the expander as described in the ex-
pander manual.
4. Complete the installation of your system by completing the remain-
ing installation procedures in this manual.
2.7 Cabling
2.7.1 Connecting the Q–bus Cables
To connect the Q–bus cables perform the following:
1. Find the two Q–bus cables labeled BC04V–09 (see Figure 2–40). One
end of each cable should be connected to the expander.
2. Connect the free ends of these two cables to the two Q–bus out
connectors on your system.
• Connect the plug end of one of the cables to connector J1 (see
Figure 2–40).
• Connect the socket end of the other cable to connector J2.
2–60 Installation