Dell Precision KR019 Setup And Quick Reference Manual

Also see for Precision R5400: Brochure Technical guide Specifications Manual Manual

30 Troubleshooting– Ensure that the main power cable and front panel cable are securelyconnected to the system board (see your Service Manual on the DellSupport website at support.dell.com).• If the power light is blinking amber, the computer is receiving electricalpower, but an internal power problem may exist.– Ensure that the processor power cable is securely connected to thesystem board (see your Service Manual on the Dell Support website atsupport.dell.com).• If the power light is steady amber, a device may be malfunctioning orincorrectly installed.– Remove and then reinstall the memory modules (see your ServiceManual on the Dell Support website at support.dell.com).– Remove and then reinstall any cards (see your Service Manual on theDell Support website at support.dell.com).• Eliminate interference. Some possible causes of interference are:– Power, keyboard, and mouse extension cables– Too many devices on a power strip– Multiple power strips connected to the same electrical outletBeep CodesYour computer may emit a series of beeps during start-up. The series of beeps,called a beep code, can help you identify a problem with your computer.If your computer emits a series of beeps during start-up:1 Write down the beep code on the "Diagnostics Checklist" on page 70.2 Run the Dell Diagnostics to identify a more serious cause (see"Troubleshooting Tips" on page 44).3 Contact Dell for technical assistance (see "Contacting Dell" on page 71).Code Cause1-1-2 Microprocessor register failure1-1-3 NVRAM read/write failure1-1-4 ROM BIOS checksum failure