Removing and Replacing Field Replaceable Units
3.18 Replacing the CPU Module
9. Install the DHW42 logic board, and connect the DHW42 input/output cable
if fitted. Follow the steps in Section 3.16.1 and Section 3.16.2 in reverse
order to install the logic board and cable.
10. Install the upper and lower drive-mounting shelf combination. Follow the
steps in Section 3.11 in reverse order to install the drive-mounting shelf
combination.
11. Install the enclosure cover. Follow the steps in Section 3.1 in reverse order
to install the cover.
3.19 Removing the Power Supply
Note
In VAX 4000 systems, the power supply (30-35042-01) is a single FRU.
It does not have any replaceable components.
To remove the power supply from the BA42B Enclosure, follow these steps:
1. Remove the ac power.
2. Remove the enclosure cover (refer to Section 3.1).
3. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
4. Disconnect the power cable from the CPU module (refer to Figure 3–44).
5. Loosen the two captive screws (refer to Figure 3–46).
Removing and Replacing Field Replaceable Units 3–73
