xw8400 Host PC Troubleshooting

1 Overview

The follow information assists in confirming if the HP xw8400 Host PC is experiencing a hardware fault. Although the following is not a complete set of diagnostics, it should be sufficient in determining if the xw8400 is suffering from hardware issues at the prescribed Field Replaceable Unit (FRU) level.

Obtain complete diagnostic details for the HP xw8400 PC from Hewlett Packard’s support web site: http://welcome.hp.com/country/us/en/support.html

Search by PC model number and download the appropriate Technical Reference Guide.

note:

HP also supplies a software diagnostic CD-ROM (HP Insight Diagnostics) to use to confirm that the Host PC failed. Please note that these diagnostics only test the base hardware configuration (systemboard, memory, etc.) of the xw8400 PC. Add-in cards (Graphics, Ethernet, SCSI Controller, etc.) are not tested.

danger

ELECTROCUTION HAZARD
there is power to the system board even when the Host PC is powered down.
per PROPER LOCKOUT / TAGOUT PROCEDURES, Disconnect AC power from the Host PC before reseating or replacing components.

2 General Troubleshooting Checklist

Before proceeding with the rest of this procedure, use the following checklist to find possible solutions for Host PC problems:

note:

This section is only applicable to GOC4 & 5 Operator Console.

Are the Host PC and Monitors connected to a working electrical outlet?
Is the Host PC powered on?
Is the front panel green power light illuminated?
Are the monitors powered on?
Are the green monitor lights illuminated?
Adjust the monitor brightness and contrast controls if the monitor is dim.
Press and hold any key. If the Host PC beeps, then the keyboard is operating correctly.
Examine all cables for loose or incorrect connections.
Remove all diskettes and CDs from the drives before you power on the system.
Are you running the latest BIOS version and have correct BIOS Settings?

3 LEDS

3.1 Power Supply (PSU) BIST LED (chassis rear panel, inside PSU)

The xw8400 has a special LED mounted just inside the PSU rear ventilation grill. When the Built In Self Test (BIST) LED is green, the PSU is operational. (See Illustration 1.)

Table 1. xw8400 Power Supply Problems (BIST LED)
Problem	Cause	Solution
Power supply shuts down intermittently.	Power supply fault	Replace Host PC.
Workstation powered off automatically and the Power LED flashes red two times, once every second, followed by a two-second pause.	Processor thermal protection activated OR Fan(s) blocked or not turning OR CPU heatsink fan assembly not properly attached to the processor	Ensure that the Host PC air vents are not blocked. Verify that the cooling fan is running. Open the access panel, press the power button, and determine if the processor fan is spinning. If the processor fan is not spinning, ensure that the fan’s cable is plugged into the system board header. Ensure that the fan is properly seated/installed. Replace the Host PC if fans are not operational or if CPU heatsinks have been disturbed.
Power LED flashes red, once every two seconds.	Power failure (power supply overloaded)	Determine whether a device is causing the problem as follows: Remove all attached devices. Power on the system. If the system enters the POST, power off and replace one device at a time. Repeat this procedure until failure occurs. Replace the Host PC if any devices are found to be overloading the PSU. Verify power supply functionality as follows: Disconnect AC power. Remove all internal power supply cables from the system board. Plug in AC power and ensure that the power supply fan spins and the BIST LED lights. If the power supply fan does not spin or the BIST LED does not light, replace the Host PC.

Observe these conditions over time. If this situation repeats regularly, the Host PC’s PSU or hardware is faulty. Replace the Host PC FRU. If these conditions happen rarely, look for Power and AC connection issues.

3.2 Power LED (chassis front panel)

The Power LED above the Power On/Off button has the following states:

Table 2. xw8400 Front Panel Power LED and Beep Code
Power LED and Sound Activity	Diagnosis and Service Action
None	Power supply failure Press the power button. If HDD LED = GREEN, replace the Host PC. If the HDD LED does not illuminate: Verify that the unit is plugged into a working AC outlet. Open the access panel and verify that the power button harness is properly connected to the inline front panel I/O device assembly connector. Verify that the power supply cables are properly connected to the system board. Verify power supply functionality.
Blinks red 2 times, once per second, then 2 second pause, 2 beeps	Thermal shutdown Ensure that the Host PC air vents are not blocked and the cooling fan is running. Open the access panel, press the power button, and see if the processor fan spins. If the processor fan is not spinning, make sure the fan cable is plugged onto the system board header. Ensure that the fan is fully/properly seated or installed. If the fan is plugged in and seated properly, but not spinning, check the processor fan. Verify that the fan assembly is properly attached. If problems persist, check the processor heatsink. Replace the Host PC.
Blinks red 3 times, once per second, then 2-second pause, 3 beeps	CPU not installed Ensure that the processor is present. Replace the Host PC.
Blinks red 4 times, once per second, then 2 second pause, 4 beeps	Power supply failure Open the access panel and ensure the following connections are secure on the system board: 24–pin main power 8–pin CPU 4–pin memory Locate the faulty device by removing all devices and reinstalling them one at a time until the Host PC fails. Replace the Host PC. Verify power supply functionality.
Blinks red 5 times, once per second, then 2 second pause, 5 beeps	Pre-video memory error Reseat DDR2 memory DIMMs. Replace the Host PC.
Blinks red 6 times, once per second, then 2 second pause, 6 beeps	Pre-video graphics card error. For systems with graphics cards, do the following: Reseat the graphics card. Replace the Host PC.
Blinks red 7 times, once per second, then 2 second pause, 7 beeps.	System board failure (ROM detected failure before video). Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
Blinks red 8 times, once per second, then 2 second pause, 8 beeps	Invalid ROM based on bad checksum Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
Blinks red 9 times, once per second, then 2 second pause, 9 beeps	System power is on but unable to boot. Replace the Host PC.

3.3 Hard Drive Activity LED

The Disk Activity LED below the Power On/Off button flickers whenever the system is accessing either hard drive.

3.4 Network Activity LEDs

The network activity LEDs at the rear of the Host PC chassis (including both the onboard network port and the two Dual Port GBe card ports) flicker whenever there is network activity on that port. These LEDs remain a solid light as long as the system is plugged into AC power with the power switch on and connected to other live Ethernet ports.

4 HP xw8400 Adavance Error Reporting (POST)

POST is a program run at startup that initializes and runs various tests on installed hardware. An audible and/or visual message occurs if the POST encounters a problem.

All errors are reported on the POST screen at the end of POST, before booting the OS. If there are any Fatal or Uncorrectable Non-Fatal errors reported, you are presented with an F1 Boot prompt. This ensures that the system doesn't boot before you are able to see the errors.

note:

The errors displayed are from the previous boot. They occurred before the most recent reboot, or they caused the most recent reboot.

4.1 HP XW8400 POST Error Reporting Control

There are several ways to control allowable errors and their results. For each error, there are three actions you can perform:

Mask and ignore the error.
Log the error in an error status register, but don't generate an Err0 signal.
Log the error in an error status register, and do generate an Err0 signal.

4.1.1 Non-Fatal Errors

There are two types of non-fatal errors. Both types are logged, but masked so that they do not generate an Err0 signal. The type of error determines how it is handled from that point on:

Correctable errors are only reported if you selected the option to force an F1 Boot prompt on recoverable errors in the BIOS Configuration Utility (F10) under Advanced > Power-On Options. The default does NOT force an F1 prompt.
Uncorrectable errors automatically force an F1 Boot prompt on the next reboot.

4.1.2 Fatal Errors

Fatal errors are not masked. When fatal errors are detected, they generate an Err0 signal.

4.2 HP XW8400 POST Error Messages

POST checks the following items to ensure that the workstation system is functioning properly:

Keyboard
Memory modules
Diskette drives
All SATA, IDE, and SAS mass storage devices
Processors
Controllers

Table 3. xw8400 POST Error Messages
Screen Message	Probable Cause	Recommended Action
101–Option ROM Error	System ROM checksum	Clear CMOS, flash the BIOS and restore BIOS Settings. May be ROMs on other expansion cards. Replace the Host PC.
102–System Board Failure	DMA, timers	Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
103–System Board Failure.	DMA, timers	Clear CMOS. Flash BIOS and restore settings. Replace Host PC.
110–Out of Memory for Option ROMs.	Option ROM for a device was unable to run due to memory constraints.	Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
162–System Options Not Set	Your system configuration has changed since your last boot, in which case press F1. Or, a loss of power to the Real Time clock (RTC) has occurred.	Run Computer Setup (F10 Setup). Set the date and time under F10 Setup (depending on the operating system). If the problem persists, replace the RTC battery.
163–Time and Date Not Set	Invalid time or date in configuration memory. RTC battery might need to be replaced. CMOS jumper might be improperly installed.	Set the date and time under F10 Setup. If the problem persists, replace the RTC battery.
164–Memory Size Error	The system memory size is different or memory configuration changed from the last startup.	Press F1 to record the configuration. If the problem persists, be sure memory modules (if any) are installed correctly. If third-party memory was added, use the HP to test the memory only. Verify proper memory module type.
201–Memory Error	The memory test performed during startup failed.	Run Computer Setup (F10 Setup). Ensure that memory modules are installed correctly. Verify proper memory module type. Remove and replace memory modules one at a time to isolate the faulty module. Replace the Host PC.
202–Mixed 533 and 667 MHz memory detected	Memory modules do not match each other.	Replace memory modules with matched sets.
207–Incompatible memory modules detected.	Incompatible memory module(s) detected.	Verify proper memory module type. Try another memory socket. Replace the Host PC.
209–Incompatible FBD memory modules detected	Incompatible memory modules detected.	Verify proper memory module type. Replace the Host PC.
210–Incompatible memory modules (AMBs) detected	Mismatched Advanced Memory Buffer (AMB) IC. Incompatible memory module(s) detected.	Verify proper memory module type. Replace the Host PC.
211–Memory warning condition detected	An unknown issue with one of the DIMMs was detected.	Verify proper memory module type. Replace the Host PC.
212–Failed Processor	Processor failed to initialize.	Reseat the processor in its socket. If the processor does not respond, replace the Host PC.
213–Incompatible ECC Memory Module in memory Socket(s).	The memory modules in the system are either not all ECC, or not all non-ECC. Another cause is the DIMM is missing critical SPD information.	Verify proper memory module type. Replace the Host PC.
214–DIMM Configuration Warning	DIMMs not installed correctly (not paired correctly).	Refer to the Theory section for the correct memory configurations and reseat the DIMMs accordingly.
301–Keyboard Error.	Keyboard failure.	Reconnect the keyboard with the workstation powered off. Check the connector for bent or missing pins. Replace the keyboard.
303–Keyboard Controller Error	I/O board keyboard controller.	Reconnect the keyboard with the workstation powered off. note: Ensure that none of the keys are pressed. Replace the Host PC.
304–Keyboard or System Unit Error	Keyboard failure.	Reconnect the keyboard with the workstation powered off. note: Ensure that none of the keys are pressed. Replace the keyboard. Replace the Host PC.
401–Parallel Port 1 Address Assignment Conflict	IRQ address conflicts with another device.	Reset the IRQ in the BIOS Setup menu.
404–Parallel Port Address Conflict Detected	Both external and internal ports are assigned to parallel port X. (This should not occur with GEHC xw8400 configuration.)	Remove any parallel expansion cards. Clear CMOS. Flash the BIOS and restore settings. Reconfigure card resources. Run Computer Setup (F10 Setup).
410–Audio Interrupt Conflict.	IRQ address conflicts with another device	Reset the IRQ in the BIOS Setup menu.
411–Network Interface Card Interrupt Conflict	IRQ address conflicts with another device	Reset the IRQ in the BIOS Setup menu.
501–Display Adapter Failure	Graphics display controller	Reseat the graphics card (if applicable). Clear CMOS. Flash BIOS and restore settings. Verify that the monitor is attached and turned on.
510–Splash Screen image corrupted	Splash Screen image has errors	Clear CMOS. Flash the BIOS and restore settings
511–CPU Fan not detected	Fan is not connected or may have malfunctioned.	Reseat the fan cable. Reseat fan. Replace Host PC.
512–Chassis fan not detected	Fan is not connected or may have malfunctioned.	Reseat the chassis or rear chassis fan cable. Reseat the chassis, rear chassis, or front chassis fan. Replace the Host PC.
513–Memory fan not detected	Memory fan is not connected or may have malfunctioned.	Reseat the memory fan connector. Replace the Host PC.
601–Diskette Controller Error	Diskette controller circuitry or diskette drive circuitry incorrect.	Run Computer Setup (F10 Setup). Disconnect any other diskette controller devices (tape drives). Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
605–Diskette Drive Type Error	Mismatch in drive type.	Run Computer Setup (F10 Setup). Disconnect any other diskette controller devices (tape drives). Clear CMOS. Flash the BIOS and restore settings. .
610–External Storage Device Failure	External drive not connected.	Check the Peripheral Tower cable connection. Check the SCSI Adapter Card setup. Press F1 and allow the system to reconfigure without the drive. Replace the Host PC.
611–Primary Diskette Port	Address assignment conflict	Run Computer Setup (F10 Setup). Check the cables. Clear CMOS. Flash BIOS and restore settings. Replace Host PC.
912–Computer Cover Has Been Removed Since Last System Start Up	N/A	No action required.
914–Hood Lock Coil is not Connected	Hood lock mechanism is missing or not connected. (This should not occur with GEHC xw8400 configuration).	Reconnect or replace the hood locking mechanism. Reseat or replace the hood locking mechanism cable.
916–Power Button Not Connected	Power button not connected.	Connect the power button.
917–Front Audio Not Connected	Front audio cable not connected.	Connect the front audio cable.
918–Front USB Not Connected	Front USB not connected.	Connect the front USB cable.
921–Device in PCI Express Slot Failed to Initialize	PCI Express card detected in one of the slots, but failed to initialize properly.	Reseat all PCI Express cards. note: If this failure occurred after inserting a new card, there could be a problem with that card.
922–Fatal error on slot #	Fatal error occurred in the designated slot.	Reseat the card or move it to a different slot. If the problem persists, replace the Host PC.
923–Non fatal error on slot #	PCI or PCIe non-fatal error condition occurred for the device in the designated slot.	Reseat the card or move it to a different slot. If the problem persists, replace the Host PC.
931–Northbound CRC error on non-redundant retry CRC error occurred	Possble faulty system board, memory, or BIOS.	Reseat the DIMMs. Replace the Host PC.
932–Alert on non-redundant retry	Alert present on retry	Reseat the DIMMs. Replace the Host PC.
945-FBD northbound	CRC error	Reseat the DIMMs. Replace the Host PC.
946-Correctable patrol data ECC error	Bad DIMM or improperly installed DIMM.	Reseat the DIMMs to ensure they are inserted correctly. If the problem persists, remove or replace the DIMMs one-by-one until the problem DIMM is isolated.
949-Correctable non-mirrored demand data ECC error	Bad DIMM or improperly installed DIMM.	Reseat the DIMMs to ensure they are inserted correctly. If the problem persists, remove or replace the DIMMs one-by -one until the problem DIMM is isolated.
950-Redundant retry FBD northbound	CRC error	Reseat the DIMMs. Replace the Host PC.
953-Non-aliased uncorrectable patrol data ECC error	Double bit ECC error due to bad DIMM or improperly installed DIMM.	Reseat the DIMMs to ensure they are inserted correctly. If the problem persists, remove or replace the DIMMs one-by-one until the problem DIMM is isolated.
956-Non-aliased uncorrectable non-mirrored demand data ECC error	Bad DIMM or improperly installed DIMM.	Reseat the DIMMs to ensure they are inserted correctly. If the problem persists, remove or replace the DIMMs one-by-one until the problem DIMM is isolated.
960–CPU Overtemp occurred	Ambient temperature exceeds operating limits (maximum = 95° F), or there are obstructions to airflow, including dust build-up.	Ensure you are not operating the system in an environment that exceeds 95° F. Disconnect power and open the access panel. Ensure that cables are not blocking CPU heatsink fans or front fan, if installed. Check that there is not excessive dust on major components. If airflow is acceptable and there is not excessive dust, then the thermal sensing circuitry has failed either on the processors or on the system board; therefore, replace the Host PC.
961-Uncorrectable data ECC on replay error	Bad DIMM or improperly installed DIMM.	Reseat the DIMMs to ensure they are inserted correctly. If the problem persists, remove or replace the DIMMs one-by-one until the problem DIMM is isolated.
1151–Serial Port 1 Address Conflict Detected	Both external and internal serial ports are assigned to COM1. (This should not occur with GEHC xw8400 configuration.)	Run Computer Setup (F10 Setup). Check the cables. Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
1155–Serial Port Address Conflict Detected	Both external and internal serial ports are assigned to same IRQ. (This should not occur with GEHC xw8400 configuration.)	Run Computer Setup (F10 Setup). Check the cables. Clear CMOS. Flash the BIOS and restore settings. Replace the Host PC.
1201–System Audio Address Conflict Detected	Device IRQ address conflicts with another device. (This should not occur with GEHC xw8400 configuration.)	Reset the IRQ.
1202–MIDI Port Address Conflict Detected	Device IRQ address conflicts with another device. (This should not occur with GEHC xw8400 configuration.)	Reset the IRQ.
1203–Game Port Address Conflict Detected	Device IRQ address conflicts with another device. (This should not occur with GEHC xw8400 configuration.)	Reset the IRQ.
1720 SMART Hard Drive Detect Imminent Failure	Hard drive is about to fail.	Determine if the hard drive is giving the correct error message. Back up the contents and replace the Host PC.
1783–Disk 0 Failure.	Drive not installed correctly or has failed.	Ensure that power and drive cables are connected to the drive and to the system board. Verify that the cables are the correct cables for your computer model. If this message persists, replace the Host PC.
1784–Disk 1 Failure	Drive not installed correctly or has failed.	Ensure that power and drive cables are connected to the drive and to the system board. Verify that the cables are the correct cables for your computer model. If this message persists, replace the Host PC.
1794–Inaccessible devices attached to SATA 1 and/or SATA 3	Devices attached to the SATA 1 (blue) and SATA 3 (black) connectors are inaccessible while SATA Emulation is set to Combined IDE Controller in Setup. (This should not occur with GEHC xw8400 configuration.)	Run Computer Setup (F10 Setup). Select Storage>Storage Options, and set the SATA controller to a Separate IDE Controller.
1800–Temperature Alert	Internal temperature exceeds the specification.	Ensure that the workstation air vents are not blocked and the cooling fan is running. Verify the processor speed selection. Replace the Host PC.
1801–Microcode Update Error	Missing or Invalid Processor Microcode Update	Contact HP for a new Microcode Update to support the new Processor Stepping. Upgrade the BIOS to the proper version.
1802–Processor Not Supported	System board does not support the processor.	Replace the processor with a compatible one.
Invalid Electronic Serial Number	Electronic serial number has become corrupted.	Run Computer Setup. If Setup already has data in the field or does not allow you to enter the serial number, replace the Host PC. Run Computer Setup and try to enter the serial number under Security>System ID. Save the changes.
ECC Multiple Bit Error Detected in Memory Module	Chipset has detected more than one bad bit in a 64-bit quadword of the memory array.	Replace the memory module.
Parity Check 2	Parity RAM failure	Run Computer Setup and Diagnostic utilities. Replace the Host PC.

Color	Host PC State
None	Off OR Hibernate(not used)
Solid Green	On
Flashing Green (once per second)	Standby (not used)
Solid or Flashing Red	Error