IBM 7378 Problem Determination And Service Manual page 219

e. Rotate the power-supply cage assembly out of the chassis. Lift up the
power-supply cage handle and pull the power-supply cage assembly all the
way up until the retainer latch locks the cage in place on the chassis.
f. Remove the air baffle (see "Removing the air baffle" on page 212).
g. Remove the fan cage assembly (see "Removing the fan cage assembly" on
page 243).
h. Disconnect the UltraSlim DVD drive cables from the system board and clips.
Chapter 5. Removing and replacing server components
201