HP Xw4550 HP xw4550 Workstation - Service and Technical Reference Guide - Page 107

Troubleshooting scenarios and solutions, Solving minor problems - 9 beeps

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Table 5-1 Diagnostic LED codes (continued) Chassis indicator LEDs Power LED and audible beep activity Diagnosis and service action Blinks red 4 times, once per second, then 2-second pause, 4 beeps Power supply failure. 1. Open the access panel and ensure the four-wire power supply cable is properly connected to the system board power connector P3. 2. Locate faulty device by removing all devices and then reinstalling one at a time until workstation fails. Replace the device causing the failure. Continue adding devices to ensure all are functioning properly. Blinks red 5 times, once per Pre-video memory error. second, then 2-second pause, 5 beeps 1. Reseat memory modules. 2. Replace memory modules one at a time to find the faulty module. 3. Replace third-party modules with HP memory. 4. Replace system board. Blinks red 6 times, once per second, then 2-second pause, 6 beeps Pre-video graphic card error. For systems with integrated graphics, replace system board. For systems with graphic cards: 1. Reseat the graphic card. Power on the system. 2. Replace the graphic card. 3. Replace the system board. Blinks red 7 times, once per System board failure (ROM detected failure before video). Replace system board. second, then 2-second pause, 7 beeps. Blinks red 8 times, once per Invalid ROM based on bad checksum. second, then 2-second pause, 8 beeps 1. Reflash ROM. 2. 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. Troubleshooting scenarios and solutions This section presents an extensive overview of various troubleshooting scenarios and includes possible solutions for each. Solving minor problems Table 5-2 Minor problems Problem Cause Workstation appears locked up and will not shut down when the power button is pressed. Software control of the power switch is not functional. Possible Solution 1. Press and hold the power button for at least four seconds until the workstation shuts down. 2. Disconnect electrical plug from outlet. ENWW Customer self help 99

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Chassis indicator LEDs
Power LED and audible beep
activity
Diagnosis and service action
Blinks red 4 times, once per
second, then 2-second pause,
4 beeps
Power supply failure.
1.
Open the access panel and ensure the four-wire power supply cable is properly
connected to the system board power connector P3.
2.
Locate faulty device by removing all devices and then reinstalling one at a time
until workstation fails. Replace the device causing the failure. Continue adding
devices to ensure all are functioning properly.
Blinks red 5 times, once per
second, then 2-second pause,
5 beeps
Pre-video memory error.
1.
Reseat memory modules.
2.
Replace memory modules one at a time to find the faulty module.
3.
Replace third-party modules with HP memory.
4.
Replace system board.
Blinks red 6 times, once per
second, then 2-second pause,
6 beeps
Pre-video graphic card error. For systems with integrated graphics, replace system
board. For systems with graphic cards:
1.
Reseat the graphic card. Power on the system.
2.
Replace the graphic card.
3.
Replace the system board.
Blinks red 7 times, once per
second, then 2-second pause,
7 beeps.
System board failure (ROM detected failure before video). Replace system board.
Blinks red 8 times, once per
second, then 2-second pause,
8 beeps
Invalid ROM based on bad checksum.
1.
Reflash ROM.
2.
Replace system board.
Blinks red 9 times, once per
second, then 2-second pause,
9 beeps
System powers on but is unable to boot.
1.
Replace the system board.
2.
Replace the processor.
Troubleshooting scenarios and solutions
This section presents an extensive overview of various troubleshooting scenarios and includes possible
solutions for each.
Solving minor problems
Table 5-2
Minor problems
Problem
Cause
Possible Solution
Workstation appears locked up
and will not shut down when the
power button is pressed.
Software control of the power
switch is not functional.
1.
Press and hold the power button for at least four
seconds until the workstation shuts down.
2.
Disconnect electrical plug from outlet.
Table 5-1
Diagnostic LED codes (continued)
ENWW
Customer self help
99