HP Point of Sale rp5000 Getting Started (3rd Edition) - Page 28

Getting Started Diagnostic Front Panel LEDs and Audible Codes Activity Red Power LED flashes four times, once every second, followed by a two-second pause. cont. Beeps None cont. Possible Cause Power failure (power supply is overloaded). cont. Recommended Action 3. Check if a device is causing the problem by removing ALL attached devices (such as hard, diskette, or optical drives, and expansion cards). Power on the system. If the system enters the POST, then power off and replace one device at a time and repeat this procedure until failure occurs. Replace the device that is causing the failure. Continue adding devices one at a time to ensure all devices are functioning properly. 4. Replace the power supply. 5. Replace the system board. 24 www.hp.com Getting Started