Fujitsu PRIMERGY TX1330 M4

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Push the PSU a few centimeters toward the inside (1) to disengage the
locking mechanism.
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Lift the PSU out of the chassis (2).
Figure 60: Removing the installation frame from the PSU (A)
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Remove the two screws (see circles).
Power supply unit (PSU)
TX1330 M4 Upgrade and Maintenance Manual 139