Table 4-8Diagnostic lights and audible codes (continued)

Activity

Possible cause

 

Recommended action

 

 

 

Red Power LED blinks

Invalid ROM based on

CAUTION: Internal components might be powered even when

eight times, once every

bad checksum.

the computer is off. To prevent damage, disconnect the computer

second, followed by a

 

power cord before you remove a component.

two-second pause. Eight

 

1.

Clear CMOS.

beeps.

 

 

 

 

 

 

 

NOTE: Refer to the Maintenance and Service Guide for

 

 

 

the computer model for detailed information on clearing

 

 

 

CMOS.

 

 

2.

Upgrade the ROM using SoftPaq, either from the hard disk

 

 

 

drive, CD, diskette, or USB removable device (for example,

 

 

 

HP Drive Key). See the ROM Flash section of the

 

 

 

Maintenance and Service Guide at http://www.hp.com/

 

 

 

support/workstation_manuals. SoftPaq is a self-extracting

 

 

 

executable, which contains instructions for its use, that

 

 

 

enables you to upgrade the ROM. To download the Softpaq

 

 

 

executable, visit http://www.hp.com/go/

 

 

 

workstationsupport.

 

 

3.

The problem might be on the system board. Contact HP for

 

 

 

assistance.

 

 

4.

 

 

 

 

 

Red Power LED blinks nine

System powers on but

1.

The problem might be on the system board. Contact HP for

times, once every second,

does not start.

 

assistance.

followed by a two-second

 

2.

The problem might be in the CPU. Contact HP for assistance.

pause. Nine beeps.

 

 

 

 

 

 

 

 

Diagnostic codes and errors 151

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HP B2B94UT B2B94UT#ABA, Z220 F1J90UAABA, Z420 D3J34UT#ABA manual Activity Possible cause Recommended action, Cmos