Lenovo ThinkStation P520 Hardware Maintenance Manual page 191

7. Position the flex module cover on the flex module. Ensure that the rail guides on the bottom of the flex
module cover engage the rails on the flex module. Then, push the cover to the front of the flex module
until it snaps into position.
Figure 147. Reinstalling the flex module cover
8. Install the flex module into the flex bay. See "Device in the flex bay" on page 106.
9. Refer to the recorded information about the cable connections and routing, reconnect all cables
connected to the flex module to the system board. See "Parts on the system board" on page 42. For the
eSATA connector, IEEE 1394 connector, or USB-C connector, connect the cables to the system board
as follows:
• Connect the eSATA connector cable to the eSATA connector on the system board.
• Connect the IEEE 1394 connector cable to the IEEE 1394 adapter.
• Connect the USB-C connector cable to the USB 3.0 extension connector or 15-in-1 card reader
connector on the system board.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 202.
Four-digit diagnostics display
To remove or install a four-digit diagnostics display in the flex module, do the following:
1. Prepare your computer. See "Preparing your computer and removing the computer cover" on page 103.
2. Record the cable connections and cable routing. Then, disconnect all cables connected to the flex
module from the system board. See "Parts on the system board" on page 42.
3. Disconnect the four-digit-diagnostics-display cable from the four-digit-diagnostics-display connector on
the system board. See "Parts on the system board" on page 42.
4. Remove the flex module from the front of the computer. See "Device in the flex bay" on page 106.
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Chapter 9 Hardware removal and installation
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