HP xw3400 HP xw3400 Workstation - Service and Technical Reference Guide - Page 126

Diagnostic Front Panel LEDs and Audible Codes continued, Activity, Beeps, Possible Cause

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Table C-2 Diagnostic Front Panel LEDs and Audible Codes (continued) Activity Beeps Possible Cause Recommended Action Red Power LED flashes four 4 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Power failure (power supply is overloaded). 1. Open the hood and ensure the 4 or 6-wire power supply cable is seated into the connector on the system board. 2. 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. 3. Replace the power supply. 4. Replace the system board. Red Power LED flashes five 5 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Pre-video memory error. CAUTION: To avoid damage to the DIMMs or the system board, you must unplug the workstation power cord before attempting to reseat, install, or remove a DIMM module. 1. Reseat DIMMs. 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 flashes six times, 6 once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Pre-video graphics error. For systems with a graphics card: 1. Reseat the graphics card. 2. Replace the graphics card. 3. Replace the system board. For systems with integrated graphics, replace the system board. Red Power LED flashes seven 7 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. Red Power LED flashes eight 8 times, once every second, followed by a two second pause. Beeps stop after fifth iteration but LEDs continue until problem is solved. System board failure (ROM Replace the system board. detected failure prior to video). Invalid ROM based on bad 1. checksum. Reflash the system ROM with the latest BIOS image. See the "Boot Block Emergency Recovery Mode" section 3.4. 2. Replace the system board. 116 Appendix C POST error messages ENWW

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Activity
Beeps
Possible Cause
Recommended Action
Red Power LED flashes four
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
4
Power failure (power
supply is overloaded).
1
.
Open the hood and ensure the 4 or 6-wire
power supply cable is seated into the
connector on the system board.
2
.
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.
3
.
Replace the power supply.
4
.
Replace the system board.
Red Power LED flashes five
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
5
Pre-video memory error.
CAUTION:
To avoid damage to the DIMMs or
the system board, you must unplug the workstation
power cord before attempting to reseat, install, or
remove a DIMM module.
1
.
Reseat DIMMs.
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 flashes six times,
once every second, followed by
a two second pause. Beeps stop
after fifth iteration but LEDs
continue until problem is solved.
6
Pre-video graphics error.
For systems with a graphics card:
1
.
Reseat the graphics card.
2
.
Replace the graphics card.
3
.
Replace the system board.
For systems with integrated graphics, replace the
system board.
Red Power LED flashes seven
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
7
System board failure (ROM
detected failure prior to
video).
Replace the system board.
Red Power LED flashes eight
times, once every second,
followed by a two second
pause. Beeps stop after fifth
iteration but LEDs continue until
problem is solved.
8
Invalid ROM based on bad
checksum.
1
.
Reflash the system ROM with the latest BIOS
image. See the “Boot Block Emergency
Recovery Mode” section 3.4.
2
.
Replace the system board.
Table
C
-
2
Diagnostic Front Panel LEDs and Audible Codes (continued)
116 Appendix
C
POST error messages
ENWW