Replacing An Optical Drive - Lenovo Y520T-25IKL Hardware Maintenance Manual

Step 7. Install the new power supply assembly：
a. Position the new power supply assembly in the chassis so that the five screw holes in the
power supply assembly align with those in the chassis. Then, install the five screws to secure
the power supply assembly.
b. Connect the power supply assembly cables to the connectors on the motherboard.
Step 8. Reattach the computer cover.

Replacing an optical drive

Note: For this procedure, it helps to lay the computer flat.
To replace an optical drive:
Step 1. Remove any media from the drives, shut down the operating system, and turn off the computer and
all attached devices.
Step 2. Unplug all power cords from electrical outlets.
Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)
cables, and any other cables that are connected to the computer. Refer to Locating connectors,
controls and components to locate the various connectors.
Step 4. Remove the computer cover. Refer to Removing the computer cover.
Step 5. Disconnect the data and power cables from the rear of the optical drive
Step 6. Open the optical drive cover
Step 7. Open the optical drive lock
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Lenovo Legion Y520 Tower Hardware Maintenance Manual
2 .
3 , and then push the optical drive out
1 .
4 .