Service and Maintain

HP Compaq 6005 Pro, USDT Chassis 618436-001 page 4
Password Security
This computer supports two security password features that are established through the
Computer Setup Utilities menu: setup password and power-on password. When you establish
only a setup password, any user can access all the information on the computer except Computer
Setup. When you establish only a power-on password, the power-on password is required to
access Computer Setup and any other information on the computer. When you establish both
passwords, only the setup password will give you access to Computer Setup.
When both passwords are set, the setup password can also be used in place of the power-on
password as an override to log in to the computer.
If you forget the password for the computer, you can clear that password so you can gain access
to the information on the computer by resetting the password jumper.
Clearing and Resetting CMOS
The computer’s configuration memory (CMOS) stores information about the computer’s con-
figuration. The CMOS button resets CMOS but does not clear the power-on and setup pass-
words. Clearing CMOS will clear the Active Management Technology (AMT) settings in the
Management Engine BIOS Extension (MEBx), including the password. The password defaults
to “admin” and needs to be reset. The AMT settings must also be reset. To access the MEBx,
press Ctrl+P during POST.
1. Turn off the computer and any external devices, and disconnect the power cord.
2. Disconnect the keyboard, monitor, and any other external equipment.
3. Remove the access panel.
4. Slide the CMOS switch.
5. Replace the access panel.
6. Reconnect the external devices.
7. Plug in the computer and turn on power.
Clearing or Disabling a Power-On or Setup password
1. Shut down the operating system properly, then turn off the computer and any external devices,
and disconnect the power cord.
2. With the power cord disconnected, press the power button again to drain any residual power.
3. Remove the access panel.
4. Locate the header and jumper. The password jumper is green.
5. Remove the jumper from pins 1 and 2. Place the jumper on either pin 1 or 2, but not both.
6. Replace the access panel.
7. Reconnect the external equipment.
8. Plug in the computer and turn on power. Allow the operating system to start. This clears the
current passwords and disables the password features.
9. To establish new passwords, repeat steps 1 through 4, replace the password jumper on pins 1
and 2, then repeat steps 6 through 8. Establish the new passwords in Computer Setup.
Hewlett-Packard Vision Diagnostics
The Hewlett-Packard Vision Diagnostics utility allows you to view information about the hard-
ware configuration of the computer and perform hardware diagnostic tests on the subsystems of
the computer. The utility simplifies the process of effectively identifying, diagnosing, and iso-
lating hardware issues.
Use HP Vision Diagnostics to determine if all the devices installed on the computer are recog-
nized by the system and functioning properly. Running tests is optional but recommended after
installing or connecting a new device.
To access HP Vision Diagnostics, you must create a Recovery Disc Set then boot to the CD con-
taining the utility. It can also be downloaded from http://www.hp.com and either burned to CD
or installed to a USB flash drive.
1. In Windows Explorer, go to C:\SWSetup\ISOs and burn the file Vision Diagnostics.ISO to a
CD or copy it to a USB flash drive.
2. While the computer is on, insert the CD in the optical drive or USB flash drive in a USB port.
3. Shut down the operating system and turn off the computer.
4. Turn on the computer. The system will boot into HP Vision Diagnostics.
NOTE: If the system does not boot to the CD in the optical drive or to the USB flash drive,
you may need to change the boot order in the Computer Setup (F10) utility.
5. At the boot menu, select either the HP Vision Diagnostics utility to test the various hardware
components in the computer or the HP Memory Test utility to test memory only.
NOTE: The HP Memory Test is a comprehensive memory diagnostic utility that is run as a
stand-alone application, outside of HP Vision Diagnostics.
6. If running HP Vision Diagnostics, select the appropriate language and click Continue.
7. In the End User License Agreement page, select Agree if you agree with the terms. The HP
Vision Diagnostics utility launches with the Survey tab displayed.
Diagnostic LEDs
Activity Beeps Possible Cause Recommended Action
Green pwr
LED On
None Computer on. None.
Green LED,
1 blink/2
seconds
None Computer in Suspend to
RAM mode (some mod-
els only) or normal Sus-
pend mode.
None required. Press any key or move the
mouse to wake the computer.
Red LED, 1
blink/sec, 2
sec pause
2 Thermal protection acti-
vated: A fan may be
blocked or not turning.
or the heat sink/fan
assembly is not properly
attached.
1. Clean all air vents.
2. Ensure that there is a 10.2 cm (4 in) clear-
ance on all vented sides of the computer to
permit the required airflow.
3.Ensure that computers are not stacked on
top of each other or so near each other that
hey are subject to each other's recirculated
or preheated air.
4.If the computer is within an enclosure,
ensure that there is proper intake and
exhaust ventilation for the enclosure.
5. If message appears on the screen indicat-
ing that a fan is not working, replace the fan.
6. Ensure that the heat sink is properly
attached.
Red LED,
3 blinks/sec,
2 sec pause
3 Processor not installed
(not indicator of bad
processor).
1. Check if processor is present.
2. Reseat processor.
Red LED,
4 blinks/sec,
2 sec pause
4 Power failure (power
supply is overloaded)
OR
The incorrect external
power supply adapter is
being used on the
USDT.
1. Check if a device is causing the problem
by removing ALL attached devices. Power
on system. If system enters the POST, then
power off and replace one device at a time
and repeat until failure occurs. Replace
device causing failure. Continue adding
devices one at a time to ensure all devices
functioning properly.
2. Replace the power supply.
3. Replace the system board.
OR
The USDT external power supply must be at
135W and use the Smart ID technology
before the system will power up. Replace
the power supply adapter with the HP-sup-
plied USDT power supply.
Red LED,
5 blinks/sec,
2 sec pause
5 Pre-video memory
error.
1. Reseat DIMMs.
2. Make sure a DIMM is installed in black
DIMM connector first if only one DIMM.
3. Replace 3rd-party with HP memory.
4. Replace system board.
Red LED,
6 blinks/sec,
2 sec pause
6 Pre-video graphics
error.
For systems with integrated graphics,
replace system board.
Red LED,
7 blinks/sec,
2 sec pause
7 System board failure
(ROM detected failure
prior to video).
Replace system board.
Red LED,
8 blinks/sec,
2 sec pause
8 Invalid ROM based on
bad checksum.
1. Reflash system ROM with latest BIOS
image.
2. Replace system board.
Red LED,
9 blinks/sec,
2 sec pause
9 System powers on but is
unable to boot.
1. Check that voltage selector, located on the
rear of power supply (some models), is set to
appropriate voltage. Proper voltage setting
depends on region.
2. Unplug power cord from computer, wait
30 seconds, plug back in.
3. Replace system board.
4. Replace processor.
Red LED,
10 blinks/
sec, 2 sec
pause
10 Bad option card. 1. Check each option card by removing the
card (one at a time if multiple cards), then
power on system to see if fault goes away.
2. Once bad card identified, remove and
replace bad option card.
3. Replace system board.
System does
not power
on and
LEDs are
not flashing
None System unable to power
on.
Press and hold power button for less than 4
seconds. If hard drive LED turns green,
power button working correctly. Try the fol-
lowing:
1. Check that voltage selector (some mod-
els), located on the rear of power supply, is
set to appropriate voltage. Proper voltage
setting depends on region.
2. Replace system board.
OR
Press and hold power button for less than 4
seconds. If hard drive LED does not turn on
green then:
1. Check that unit plugged into a working
AC outlet.
2. Open hood and check that power button
harness is properly connected to system
board.
3. Check that both power supply cables are
properly connected to system board.
4. Check if 5V_aux light on system board is
turned on. If yes, replace power button har-
ness. If problem persists, replace system
board.
5. If 5V_aux light on system board is not
turned on, remove expansion cards one at a
time until 5V_aux light on system board
turns on. It problem persists, replace power
supply.