Lenovo System x3550 M4 Installation And Service Manual page 54

Note: When you disconnect the power source from the server, you lose the ability to view the
LEDs because the LEDs are not lit when the power source is removed. Before you disconnect the
power source, make a note of which LEDs are lit, including the LEDs that are lit on the operation
information panel, on the light path diagnostics panel, and LEDs inside the server on the system
board.
Step 3. Remove the cover (see "Removing the cover" on page 34).
Step 4. Remove the DVD drive filler panel if it is installed. Locate the blue release tab on the rear of the DVD
drive filler panel; then, while you press the tab, push the DVD drive filler panel out of the drive bay.
Figure 29. DVD drive filler panel removal
Step 5. Remove the retention clip from the side of the DVD drive filler panel. Save the DVD drive filler panel
for future use.
Note: If you are installing an optical drive that contains a laser, observe the following safety
precautions.
Statement 3
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are
installed, note the following:
• Do not remove the covers. Removing the covers of the laser product could result in
exposure to hazardous laser radiation. There are no serviceable parts inside the device.
• Use of controls or adjustments or performance of procedures other than those specified
herein might result in hazardous radiation exposure.
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Lenovo System x3550 M4 Installation and Service Guide