HP Xw8400 HP xw8400 Service and Technical Reference Guide - Page 118
System diagnostics and troubleshooting - processor upgrade
UPC - 883585271085
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Table 5-2 Diagnostic LED codes (continued) Chassis Indicator LEDs Power LED and Sound Activity Diagnosis and Service Action Blinks red 7 times, once per second, then 2 second pause, 7 beeps. System board failure (ROM detected failure before video). 1. Clear CMOS. 2. Replace system board. Blinks red 8 times, once per second, then 2 second pause, 8 beeps Invalid ROM based on bad checksum. 1. Clear CMOS. 2. Upgrade the ROM using a ROMPaq diskette, CD, diskette, or USB removable device (e.g., HP Drive Key). See the ROM Flash section of the Service and Technical Reference Guide at http://www.hp.com/support/workstation_manuals. 3. Replace system board. Blinks red 9 times, once per System powers on but is unable to boot. second, then 2 second pause, 9 beeps 1. Replace the system board. 2. Replace the processor. * Refer to the Service and Technical Reference Guide for your workstation for BIST information. 108 Chapter 5 System diagnostics and troubleshooting ENWW