Removing and Replacing Field Replaceable Units
3.17 Removing the CPU Module
3.17 Removing the CPU Module
To remove the CPU module from the BA42B Enclosure, follow these steps:
1. Remove the ac power from the BA42B Enclosure.
2. Disconnect the external cables, loopback connectors, and terminators from
the back of the system unit.
3. Remove the enclosure cover (refer to Section 3.1).
4. Remove the upper and lower drive-mounting shelf combination (refer to
Section 3.11).
5. If installed, remove the DSW42 logic board (refer to Section 3.15.1) and
disconnect the DSW42 input/output cable from the CPU module (refer to
Section 3.15.2).
6. If installed, remove the DHW42 logic board (refer to Section 3.16.1) and
disconnect the DHW42 input/output cable from the CPU module (refer to
Section 3.16.2).
7. Disconnect the MS44 or MS44L memory modules from the CPU module
(refer to Section 3.2).
8. Disconnect the power cable from the CPU module (refer to Figure 3–44).
3–68 Removing and Replacing Field Replaceable Units
