Maintenance and Service Guide: HP ap5000 All-In-One Point of Sale System

11. Replace the power supply bracket by sliding the slotted end into frame (1) and tightening the
thumbscrew (2).
Figure 7-22 Replacing the Power Supply Bracket
12. Replace the bottom I/O cover.
13. Turn the unit over and onto its base.
14. Plug the power cord into an electrical outlet and press the power button.
Removing the Magnetic Strip Reader (MSR)
The MSR is located on the side of the display head.
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: You must disconnect the power cord and wait approximately 30 seconds for the
power to drain before adding or removing memory modules. Regardless of the power-on state,
voltage is always supplied to the memory modules as long as the computer is plugged into an
active AC outlet. Adding or removing memory modules while voltage is present may cause
irreparable damage to the memory modules or system board.
3. Unplug all peripherals from the side I/O panel.
4. Remove the drive cover (see
Removing the Drive Cover on page 43).
5. Remove the bottom I/O cover (see
Removing the Bottom I/O Cover on page 42).
6. Unplug the power cord and all peripherals from the bottom I/O panel.
7. Tilt the touch screen all the way back to its horizontal position and lay the unit face down on a
soft, clean, dry cloth to avoid scratching the touch screen.
56 Chapter 7 Removal and Replacement Procedures