HP dx2480 manual Diagnostic Front Panel LEDs and Audible Codes

Page 79

Troubleshooting

Diagnostic Front Panel LEDs and Audible Codes

Activity

Beeps

Possible Cause

Recommended Action

Blue Power LED On.

None

Computer on.

None

 

 

 

 

Blue Power LED flashes

None

Computer in

Press any key or move the

every two seconds.

 

Suspend to RAM

mouse to wake the computer.

 

 

mode (some models

 

 

 

only) or normal

 

 

 

Suspend mode.

 

 

 

 

 

CPU Fan weak (RPM <

2

Processor thermal

1. Ensure that the computer

1000) or not turning,

 

protection activated:

air vents are not blocked

Display Warning message

 

A fan may be

and the processor cooling

and Long Beep for 5 sec

 

blocked or not

fan is running.

and shut down.

 

turning. OR The

2. Open hood, press power

 

 

heatsink/fan

button, and see if the

 

 

assembly is not

processor fan spins. If the

 

 

properly attached to

processor fan is not

 

 

the processor.

spinning, make sure the

 

 

 

fan's cable is plugged onto

 

 

 

the system board header.

 

 

 

Ensure the fan is

 

 

 

fully/properly seated or

 

 

 

installed.

 

 

 

3. If fan is plugged in and

 

 

 

seated properly, but is not

 

 

 

spinning, then replace

 

 

 

processor fan.

 

 

 

4. Reseat processor heatsink

 

 

 

and verify that the fan

 

 

 

assembly is properly

 

 

 

attached.

 

 

 

5. Contact an authorized

 

 

 

reseller or service provider.

 

 

 

 

System Fan not turning, 2 Display Warning message and Long Beep for 5 sec and shut down

Thermal protection activated: System fan may be blocked or not turning. OR The system fan is not properly connected to the system board.

1.Open hood, press power button, and see if the system fan spins. If the system fan is not spinning, make sure the fan's cable is plugged onto the system board header.

2.Ensure that no foreign objects are stuck in the

System Fan.

3.If still it does not spins, replace the the System fan or contact an authorized reseller or service provider

Blue Power LED flashes

Pre-video memory

1. Reseat DIMMs. Power on

five times, one every

error.

 

the system.

second, followed by a 2

 

2.

Replace DIMMs one at a

second pause. Also 5

 

 

time to isolate the faulty

simultaneous beeps will

 

 

module.

be heard.

 

3.

Replace third-party memory

 

 

 

with HP memory.

 

 

4.

Replace the system board.

Troubleshooting Guide

www.hp.com/in

8-18

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Page 78 Page 80
Contents Hardware Reference Manual Hardware Reference Guide Hardware Reference Guide Contents Security Lock Provisions Standard Configuration Features Product FeaturesFront Panel Components Front Panel ComponentsRear Panel Components Rear Panel ComponentsKeyboard Components KeyboardSpecial Mouse Functions Windows Logo KeySerial Number Location Serviceability Features Hardware UpgradesRemoving the Computer Access Panel Removing the Front Bezel DIMMs Installing Additional MemoryDDR2-SDRAM DIMMs Populating Dimm Sockets Installing DIMMs Installing a Dimm Removing a 5.25 Drive Bezel Blank Replacing or Upgrading a Drive Drive Positions Locating Drive PositionsRemoving a Drive Hard disk is inserted or slide out from the back Replacing a Drive Sliding the Drives into the Drive Cage Sliding the Hard Drive into the Drive Cage Install Second Hard Disk Hardware Upgrades Hardware Upgrades Removing or Installing an Expansion Card Releasing the Slot Cover Lock Removing an Expansion Slot Cover Removing an Expansion Card Replacing or Adding an Expansion Card Securing the Expansion Cards and Slot Covers Reassembling the Computer Turn on the computer by pressing the power button Battery Replacement Hardware Reference Guide Power Supply Notice Power Supply Label Chassis Intrusion Switch Installing a Security LockMechanical Lock Grounding Methods Preventing Electrostatic DamageHardware Reference Guide Computer Operating Guidelines and Routine Care Operation Optical Drive PrecautionsCleaning SafetyShipping Preparation Computer Setup F10 Utility Guide Computer Setup F10 Utility Guide Contents Contents Computer Setup F10 Utilities Computer Setup F10 UtilityUsing Computer Setup F10 Utilities Computer Setup F10 Utility Heading Option Description Computer SetupCHS 1MB 3BC/IRQ7 Computer Setup Heading Option Description Troubleshooting Guide Troubleshooting Guide HP Insight Diagnostics Computer Diagnostic FeaturesAccessing HP Insight Diagnostics Survey Tab Unattended Test TabStatus Tab Log Tab Saving and Printing Information in HP Insight DiagnosticsDownloading the Latest Version of HP Insight Diagnostics Safety and Comfort Before You Call for Technical Support TroubleshootingTroubleshooting Helpful Hints Run the Restore Plus! DVDTroubleshooting Problem Cause Solution Solving General ProblemsTo permit required airflow Cable connections are Problem Cause Solution Solving Hardware Installation Problems Problem Cause Interpreting Diagnostic Lights and Audible CodesDiagnostic Front Panel LEDs and Audible Codes Diagnostic Front Panel LEDs and Audible Codes Contacting Customer Support Restoring the Software
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