HP Omnibook Xt1500 Service Manual

							Technology Code ID)  Troubleshooting and Diagnostics  3-19 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
PC card    
Miscellaneous 
problems. Remove and reinsert PC 
card. 
Restart notebook. 
Try card in other slot or in 
another computer. 
Check for conflicts or refresh 
device list in Device 
Manager. If card requires an 
IRQ, make sure one is 
available. 
Check HP Notebook W eb 
site for installation 
instructions and information 
about supported PC cards 
(page vi). 
Download current drivers 
from card manufacturer’s 
W eb site. PC card. 
PCMCIA socket. 
Motherboard. Using a flashlight, look for 
bent pins inside PCMCIA 
socket. 
If both slots have problems, 
replace motherboard. If only 
one slot has a problem, try 
replacing PCMCIA socket. 
Data loss.  Stop PC card before 
removing it to avoid data 
loss.   
PC card modem not 
working. Disable internal modem.     
Video file playback    
AVI or MPEG file 
doesn’t play with 
two displays. Before playing, press Fn+F5 
to switch to one display. 
Cannot switch displays after 
play begins. 
If using both displays, video 
image will not appear on any 
display set up as 
“secondary”. Open Display in 
Control Panel, click 
Advanced on Settings tab, 
and change settings.   
Resolution or color 
depth problems 
when playing an 
AVI or MPEG file. Set the resolution or color 
depth before starting the 
video file player. You cannot 
change these settings after 
play begins. 
Some combinations of color 
depth and resolution are not 
supported in video file 
playback. If you receive an 
error message, reduce color 
depth or display resolution.    
						

							3-20  Troubleshooting and Diagnostics  Technology Code ID) 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Performance    
Notebook still on 
but stops 
responding. Press Ctrl+Alt+Del and end 
any application not 
responding. 
Press and hold the power 
button four seconds to turn 
off and reset notebook, then 
press the power button to 
turn the notebook back on. 
If this fails, use a pen to 
press reset switch, then 
press power button to turn 
notebook back on.   
Notebook pauses 
or runs sluggishly. May be normal W indows 
behavior (background 
processing can affect 
response time). 
Certain background 
operations (such as virus 
scanning software) can affect 
performance. 
Press Ctrl+Alt+Del to see if 
an application is not 
responding. 
Restart notebook. 
If hard disk has spun down to 
conserve power, it can take 
several seconds to spin up. If 
needed, use Power Options 
in Control Panels to change 
hard disk time-out to match 
standby time-out. 
Some file browsers respond 
slowly while processing 
graphics or waiting for broken 
network connections to time 
out. 
Check for overheating—see 
previous symptom. 
If notebook’s hard disk drive 
runs frequently (as indicated 
by notebook’s hard disk drive 
access light) while notebook 
appears to be paused or 
running slowly, consider 
installing additional SDRAM. 
Check available free disk 
space. Delete temporary and 
unneeded files. Fan. 
Heatsink. 
CPU module. 
Motherboard. If notebook slows after period 
of continuous activity, check 
heatsink—see previous 
symptom.  
						

							Technology Code ID)  Troubleshooting and Diagnostics  3-21 
Symptom Call Center: 
Suggestions 
Repair Center: 
Likely Causes 
Repair Center: 
Comments 
Notebook gets 
abnormally hot. Always set notebook on a flat 
surface, so air can flow freely 
around and underneath. 
Make sure air vents are 
clear. 
Check fan and heatsink 
installation. 
Games and other programs 
that drive CPU usage toward 
100% can contribute, as can 
charging battery. Fan. 
Heatsink. Check fan and heatsink for 
proper operation or damage. 
Clock loses time.  Plug in AC adapter for 24 
hours to charge CMOS 
battery. Motherboard.   
						

							3-22  Troubleshooting and Diagnostics  Technology Code ID) 
Diagnostic Tools 
This section describes the following diagnostic tools you can use for troubleshooting and repairing the 
notebook: 
• e-DiagTools diagnostic program (below). 
• Power-on self-test (page 3-25). 
• Sycard PCCtest 450 PC Card (page 3-26). 
• BIOS configuration utility (page 3-27). 
e-DiagTools Diagnostic Program 
The e-DiagTools hardware diagnostic program provides two levels of testing: 
• Basic user-level hardware test. 
• Advanced individual hardware tests. 
      
Figure 3-2. e-DiagTools Screens — Basic and Advanced 
The tests are designed to run after the system restarts, so that the notebook will be in a predictable 
state during the tests. The tests are non-destructive, and are intended to preserve the state of the 
notebook. The notebook restarts when you exit the program so drivers can be loaded. 
Updating e-DiagTools 
You can download the latest version of e-DiagTools from the HP Notebook Web site (see page vi). 
Follow the instructions included with the new version.  
						

							Technology Code ID)  Troubleshooting and Diagnostics  3-23 
Running e-DiagTools 
1.  Restart the notebook: click Start, Turn Off Computer, Restart. 
2.  When the HP logo appears, press F10 to start the diagnostic test. 
3.  When the menu appears, press F2 to run e–DiagTools. 
  The first time you run the program, you are prompted to select the language for the program. 
4.  When the Configuration Description appears, verify the list of detected hardware. 
Note 
If a device is not detected or fails its test, it might be configured incorrectly in BIOS. You can 
confirm this by running the BIOS configuration utility and checking the settings—see “BIOS 
Configuration Utility” on page 3-27. 
5.  Run the basic test. Press F2 to start the basic hardware test. The results appear when the test is 
complete. 
  You can also proceed directly to the advanced tests from this point by pressing Ctrl-F9 (in which 
case skip to step 10, below). ??still true?? 
If the basic test fails, you can press F6 and start a Wizard that runs a set of advanced tests for the 
failed component. Then generate a support ticket. ??still true?? 
6. 
Optional: Run the advanced tests. Press F2 to open the advanced test screen. 
7.  Use the arrow keys and ENTER to select the tests that you want to run. Tests are listed only for 
detected hardware. 
  If a test fails, the error code and description are logged, and the error code is displayed 
temporarily. If several errors occur, look for patterns that might indicate a common cause. 
8.  Press F2 to run the selected tests and add the results to the Support Ticket. 
9.  Press F12 to run the selected tests in a loop until you press ESC. When running advanced tests in 
a loop, ESC does not stop all tests immediately. 
10.  After each run, press F2 to go back to the advanced tests screen, press F4 to view the support 
ticket, or press F3 to exit. 
Viewing the support ticket 
1.  In Windows, click Start, All Programs, Hewlett-Packard, Notebook, HP e–DiagTools, e–
DiagTools for Windows. 
2.  Click View to display the Support Ticket. 
3.  To add information about your problem, click Comments and type the information, then click OK. 
  To save or print the Support Ticket, click Save As or Print.  
						

							3-24  Troubleshooting and Diagnostics  Technology Code ID) 
Note that the parallel port test is more thorough if you connect a loop-back connector to the port 
before running the test. See the wiring diagrams below. 
141
25 13
 
Figure 3-3. Parallel Loopback Connector 
Interpreting the Results 
The e-DiagTools diagnostic program returns test groups, error codes, and suggestions for repair and/or 
follow-up actions. Consider these suggestions in combination with other troubleshooting information 
in servicing the notebook.  
						

							Technology Code ID)  Troubleshooting and Diagnostics  3-25 
Power-On Self-Test 
The POST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that the 
system BIOS runs when the notebook boots. The system BIOS will not boot the operating system if 
system memory, the CPU, DMA, or interrupt controller fails the POST diagnostic tests. POST 
progress is indicated by a sequence of codes, and error messages are displayed if possible. 
You should not necessarily interpret the failure of one or more POST tests as a hardware, software, or 
firmware failure. If an error message appears, confirm the problem using other diagnostic tools. Not 
all POST messages indicate a hardware, software, or firmware failure—some messages are for 
information only. 
First, confirm the failure by performing a “clean” boot, as described below: If the notebook fails to 
restart with a clean boot, it requires repair. 
1.  Remove all accessories, including SDRAM modules, PC cards, printer, external monitor, pointing 
device, and keyboard. 
2. Provide “clean” AC power—no auto adapter or unusual AC adapter configuration. 
3.  Press the reset switch to return the notebook to a known state. 
If the BIOS detects a terminal error condition, it halts POST after issuing a terminal error beep code 
and/or displaying a message (see the following table). The beep code indicates the POST routine in 
which the terminal error occurred. 
If the system fails after you make changes using the BIOS configuration utility, reset the notebook, 
enter the BIOS configuration utility, and install the defaults or correct the error. 
Table 3-3. Insyde MobilePRO BIOS POST Beep Codes and Messages 
Beep Code Message Description 
5 short, 1 long  FAULTY DMA PAGE REGISTERS  DMA page registers do not function properly. 
4 short, 1 long, 
1 short FAULTY REFRESH CIRCUIT  RAM refresh circuit does not function properly. 
4 short, 2 long  ROM CHECKSUM INCORRECT  BIOS ROM checksum failed. 
3 short; 1 long, 
2 short CMOS RAM TEST FAILED  CMOS RAM test failed. 
3 short, 1 long, 
1 short, 1 long DMA CONTROLLER FAULTY  DMA controller does not work properly. 
3 short; 2 long, 
1 short INTERRUPT CONTROLLER FAILED  Interrupt controller does not work properly. 
3 short; 3 long  (None)  Keyboard controller failed to respond to the self-
test command. 
2 short, 1 long; 
3 short (None)  No video device found. 
2 short, 1 long; 
2 short, 1 long (None)  No RAM installed. 
(None)  KEYBOARD CONTROLLER FAILURE  Keyboard controller failed during system inquiry 
about connected devices. 
(None)  KEYBOARD FAILURE  Keyboard fails to respond or no keyboard is 
connected. 
(None)  CMOS FAILURE - RUN SCU  CMOS data error, probably due to loss of battery 
power. 
(None)  CMOS CHECKSUM INVALID - RUN SCU  CMOS checksum error.  
						

							3-26  Troubleshooting and Diagnostics  Technology Code ID) 
Beep Code Message Description 
(None)  RAM ERROR AT LOCATION xxxxxx : 
WROTE : xxxx 
READ : xxxx RAM failed during memory test at the indicated 
location. 
(None)  PARITY ERROR AT UNKNOW N 
LOCATION Parity error during memory test at unknown 
location. 
(None)  PARITY ERROR AT LOCATION xxxxxx  Parity error during memory test at the indicated 
location. 
(None)  NO INTERRUPTS FROM TIMER 0  Timer 0 of the clock timer controller does not 
generate system interrupts correctly. 
(None)  UNEXPECTED AMOUNT OF MEMORY - 
RUN SCU System memory size does not match the CMOS 
record. 
(None)  CLOCK NOT TICKING CORRECTLY  System clock does not work correctly. 
(None)  TIME/DATE CORRUPT - RUN SCU  Time/date information in CMOS is invalid. 
(None)  MACHINE IS LOCKED - TURN KEY  Keyboard operation is locked. 
(None)  BOOT SECTOR 0 HAS CHANGED  Hard disk boot sector has been changed, 
probably because of a virus attack. 
(None)  Suspend-to-Disk partition MISSING!  No Suspend-to-Disk partition found. 
(None)  Hard Disk ERROR!  Access to the Suspend-to-Disk partition failed. 
(None)  Suspend-to-Disk partition signature NOT 
FOUND! No Suspend-to-Disk partition signature found. 
(None)  Suspend-to-Disk partition size TOO 
SMALL! Suspend-to-Disk partition has insufficient 
capacity. 
(None)  MEMORY SIZE HAS CHANGED -- 
REBOOTING Memory size has changed after previous 
Suspend-to-Disk operation. 
 
Sycard PCCtest 450/460 CardBus Card (Optional) 
The PCCtest 450 and 460 CardBus Cards (version 1.05) available from Sycard Technology are the 
only recommended diagnostic tool that tests the functionality of the PCMCIA slots using a PCMCIA 
card. Each is a Type II PC Card that works with compatible test software to exercise PCMCIA 
functions. (For details, see the Sycard Technology Web site: http://www.sycard.com.) 
The PCCtest product contains these components: 
• PCCtest 450 or 460 (revision 1.05) PC Card. 
• PCCtest 450/460 test software disk. (Software updates are available at the Sycard Technology 
Web site: http://www.sycard.com.) 
• Configuration headers (PC Card/16-bit and CardBus/32-bit) that attach to the card. 
You will also need a CardBus extender card (such as the Sycard PCCextend 70) to avoid wear on the 
Sycard PCMCIA connector. 
The Sycard PCCtest 450 and 460 provide the following tests. See the Sycard documentation for 
details about running the tests. 
Table 3-4. Sycard PCCtest Commands 
 Slot PCMCIA PC Card (16-bit) test 
(PC Card configuration header) 
CardBus (32-bit) test 
(CardBus configuration header) 
zt1000/xz300/xt1500 
(technology code ID) N/A  PCT450 -bc1b -0 -v  TESTCB -b92b -0 –v  
						

							Technology Code ID)  Troubleshooting and Diagnostics  3-27 
BIOS Configuration Utility 
The BIOS configuration utility provides access to basic system settings. It is independent of the 
operating system. 
Running the BIOS configuration utility 
1.  Restart the notebook. 
2.  When the HP logo appears, press F2 to enter the BIOS configuration utility. 
3.  The pointing devices are not active in the BIOS configuration utility, so you will need to use the 
keyboard to navigate: 
• Press the left and right arrow keys to move among menus. 
• Press the up and down arrow keys to move among parameters in a menu. 
• Press Enter to open the dialog for the current parameter, or to select the parameter. 
• Press Tab or the left and right arrow keys to move among selections in a dialog. 
• Press the up and down arrow keys to move through values for the setting. 
• Press Enter to close the dialog and accept the settings. 
4.  After you select the options you want, use the Exit menu to exit the utility. 
Table 3-5. BIOS Configuration Menus and Parameters 
Pavilion zt1000/xz300 and Omnibook xt1500: Settings for BIOS version IB.M1.00 (Spring 2002). 
Main Menu Description Default 
BIOS Revision  Shows the current BIOS version.  Detected 
automatically. 
Service ID (Born On 
Date) Displays an identifier used for repair service.  Detected 
automatically. 
Serial Number  Displays the serial number as shown on the back of the unit.  Detected 
automatically. 
UUID Number  Displays the value of the 16-byte UUID (Universally Unique 
ID) as 32 hex characters. Detected 
automatically. 
Platform Branding ID  Displays the product family.  Detected 
automatically. 
System Time  Sets the time using 24-hour format. Values set take effect 
immediately.  
System Date  Sets the date using dd/mm/yy format (except English, which 
uses mm/dd/yy format).  
Internal Hard Disk  Sets the hard disk drive type and various parameters.  Detected 
automatically. 
Extended Memory  Shows the extended memory size.  Detected 
automatically. 
LCD Status Panel 
Display Sets whether the status panel on the front of the notebook is 
enabled. Enabled 
LCD Status Panel Date 
Format Sets the date format for the status panel.  mm/dd/yy 
LCD Status Panel Time 
Format Sets the time format for the status panel.  hh:mm AM/PM  
						

							3-28  Troubleshooting and Diagnostics  Technology Code ID) 
Language  Sets the language for the BIOS menus.  English (US) 
Security Menu Description Default 
User Password is  Shows if a user password is set.  Clear 
Administrator Password 
is Shows if an administrator password is set.  Clear 
Set User Password  Press ENTER to set, change, or clear the user password. 
The password can have no more than 8 characters (0-9, 
A-Z), and cannot include special or accented characters. Enter 
Set Administrator 
Password Press ENTER to set, change, or clear the administrator 
password, which protects BIOS Setup settings. The 
password can have no more than 8 characters (0-9, A-Z), 
and cannot include special or accented characters. Enter 
Password Required to 
Boot Sets whether a user password is required when the 
computer boots. Requires the administrator password for 
changes. Disabled 
Boot Menu Description Default 
Hard Drive 
CD-ROM/DVD 
USB Floppy 
Network Boot  Shows the order of boot devices. Move the entries to 
change the order. Network Boot provides diskless boot from 
a network server.  1. Hard Drive 
2. CD-
ROM/DVD  
3. USB Floppy 
4. Built-in LAN 
Exit Menu Description Default 
Save Changes and Exit  Saves Setup changes, and then exits and reboots.   
Discarding Changes  Discards any Setup changes made since last save, and then 
exits and reboots. Does not affect password, date, or time 
changes.  
Get Default Values  Restores default settings, and remains in Setup. Does not 
affect password, date, or time changes.  
 
Updating the Notebook’s BIOS 
Hewlett-Packard may provide updates to the notebook’s BIOS to enhance the capabilities of your 
system. Check the HP Business Support Web site (www.hp.com/go/bizsupport). Installation utilities 
and instructions will be provided with the updates.