HP RP7 Hardware Reference Guide HP RP7 Retail System Model 7800 - Page 40

Installing the VFD Customer Display With One or Two Poles, CAUTION

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13. Replace the rear I/O cover by placing the hooks on the bottom of the cover into the slots on the bottom of the chassis (1). Then rotate the top of the I/O cover up so that it snaps securely onto the chassis (2). 14. Reconnect the power cord and press the power button. Installing the VFD Customer Display With One or Two Poles 1. Turn off the computer properly through the operating system, then turn off any external devices. 2. Disconnect the power cord from the power outlet. CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer. 3. Slide down the two levers on the upper corners of the rear I/O panel (1) and rotate the cover off (2). 34 Chapter 2 Hardware Upgrades

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13.
Replace the rear I/O cover by placing the hooks on the bottom of the cover into the slots on the
bottom of the chassis (1). Then rotate the top of the I/O cover up so that it snaps securely onto
the chassis (2).
14.
Reconnect the power cord and press the power button.
Installing the VFD Customer Display With One or Two Poles
1.
Turn off the computer properly through the operating system, then turn off any external devices.
2.
Disconnect the power cord from the power outlet.
CAUTION:
Regardless of the power-on state, voltage is always present on the system board
as long as the system is plugged into an active AC outlet. You must disconnect the power cord
to avoid damage to the internal components of the computer.
3.
Slide down the two levers on the upper corners of the rear I/O panel (1) and rotate the cover off
(2).
34
Chapter 2
Hardware Upgrades