HP Dc5000 HP Compaq Business Desktop dc5000 Series Service Reference Guide 2nd - Page 167
Diagnostic Front Panel LEDs and Audible Codes, Activity, Beeps, Possible Cause, Recommended Action
UPC - 829160313740
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Troubleshooting Without Diagnostics Diagnostic Front Panel LEDs and Audible Codes (Continued) Activity Beeps Possible Cause Recommended Action Red Power LED stays on. OR Red Power LED flashes three times, once every second, followed by a two second pause. None Processor not installed (not an indicator of bad processor). 1. Check to see that the processor is present. 2. Reseat the processor. Red Power LED flashes once every two seconds. OR Red Power LED flashes four times, once every second, followed by a two second pause. None Power failure (power supply is overloaded). 1. Check that the voltage selector, located on the rear of the power supply, is set to the appropriate voltage. Proper voltage setting depends on your region. 2. Open the hood and ensure the 4-wire power supply cable is seated into the connector on the system board. 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. Red Power LED 5 flashes five times, once every second, followed by a two second pause. Pre-video memory error 1. Reseat DIMMs. Power on the system. 2. Replace DIMMs one at a time to isolate the faulty module. 3. Replace third-party memory with HP memory. 4. Replace the system board. Red Power LED 6 flashes six times, once every second, followed by a two second pause. Pre-video graphics error. For systems with a graphics card: 1. Reseat the graphics card. Power on the system. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. Service Reference Guide, dc5000 360201-002 D-27