IBM DS3500, Installation, User & Maintenance Manual, Page: 146 / 180

a. Remove the six screws from the sides of the chassis.
b. Remove the failed midplane from the chassis and insert the replacement
midplane.
c. Secure with the six screws.
10. (EXP3512 and EXP3524) Reinstall the ESMs (see “Replacing an ESM” on
page 124).
11. (DS3512 and DS3524) Reinstall the controllers (see “Installing a controller” on
page 95).
12. Reinstall the power supplies (see “Replacing a power supply” on page 114).
13. Reinstall the hard disk drives (see “Installing a hard disk drive” on page 106).
14. (DS3512 and DS3524) Turn on the storage subsystem (see “Turning on the
storage subsystem” on page 68).
15. (EXP3512 and EXP3524) Turn on the expansion enclosure (see “Turning on
the expansion enclosure” on page 88).
16. Check the LEDs to make sure that the storage subsystem or expansion
enclosure is fully operational (see “Checking the LEDs” on page 73).
Figure 100. Replacing the midplane assembly in a DS3524 or EXP3524
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System Storage DS3500 and EXP3500: Installation, User’s, and Maintenance Guide