HP Omnibook Xe2 Service Manual
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HP OmniBook XE2 Troubleshooting and Diagnostics 3-9 SymptomCall Center: Suggestions Repair Center: Likely Causes Repair Center: Comments PCMCIA General problems Make sure Card Executive is installed for Windows NT. If the card requires an IRQ, check that there is one available. Check for conflicts or refresh the device list in Device Manager (Windows 95) or Administrative Tools or Control Panel System (Windows NT). Reboot the computer. Try the card in the other slot or in another computer. Check the OmniBook website for installation instructions (page vi). Download current drivers from the card manufacturer’s website.Motherboard. PCMCIA socket.Using a flashlight, look for bent pins inside the PCMCIA socket. If both slots have problems, replace the motherboard. If only one slot has a problem, try replacing the PCMCIA socket. AC adapter Does not power the OmniBookTry another AC adapter, if available.AC adapter. Motherboard.The AC adapter is not repairable—it must be replaced. Miscellaneous Clock loses time Plug in AC adapter for 24 hours to charge backup battery.Motherboard. Charge backup battery. Computer gets hot It is normal for the computer to get hot. Make sure the air vents are clear. DOS games and other programs that drive CPU usage toward 100% can contribute.Fan. Thermal connections. Heatsink damage.Check the fan. Check for proper contact between CPU and its top plate, and between heatpipe and heatsink.
3-10 Troubleshooting and Diagnostics HP OmniBook XE2 SymptomCall Center: Suggestions Repair Center: Likely Causes Repair Center: Comments Computer pauses or runs sluggishlyMay be normal Windows behavior (background processing can affect response time). If the hard disk has spun down to conserve power, it can take several seconds to spin up. You can hear this. You can run BIOS Setup and change the hard disk time- out to match the Suspend time-out. Certain background operations (such as HP COE virus scans) can affect performance while they’re running. Some file browsers may be unresponsive while they’re processing a graphic image or waiting for broken network connections to time out. Check for overheating—see the previous symptom. Run BIOS Setup and try turning off smart CPU mode.CPU module. Motherboard.If computer slows after a period of continuous activity, check thermal connections and parts—see the previous symptom. Accessories Port replicator I/O problemsCheck that AC power is connected. Check settings in BIOS Setup. Try using the corresponding OmniBook port.Port replicator. Motherboard.Test the corresponding OmniBook ports while undocked. The port replicator is not repairable—it must be exchanged. Cannot boot from CD in CD-ROM driveCheck that the CD is bootable. During boot, do not press ESC before the F2 prompt— or check boot order in BIOS Setup.CD-ROM drive. The CD-ROM drive is not repairable—it must be exchanged. General plug-in module problemsCheck module contacts. Push system-off button.Plug-in module or contacts. Motherboard.Plug-in modules are not repairable—they must be exchanged.
HP OmniBook XE2 Troubleshooting and Diagnostics 3-11
Diagnostic Tools
This section describes the following diagnostic tools you can use for troubleshooting and repairing the
OmniBook:
· OmniBook hardware diagnostic program (below).
· Power-on self-test (page 3-16).
· Desktop Management Interface (page 3-20).
· BIOS Setup utility (page 3-22).
OmniBook Diagnostic Program
The OmniBook hardware diagnostic program provides two levels of testing:
· User-level testing using the basic hardware test.
· Advanced testing using the individual hardware tests.
Figure 3-2. OmniBook Diagnostic Screens, Basic and Advanced
The tests are designed to run after the system reboots. This ensures that the computer will be in a
predictable state, so the diagnostic program can properly test the hardware components. The tests are
non-destructive and are intended to preserve the state of the computer. The OmniBook reboots when
you exit the program so drivers can be loaded.
Creating a Diagnostic Floppy Disk
After inserting a formatted floppy disk in the floppy drive, do one of the following to create a
diagnostic floppy disk:
· On an OmniBook with a factory software installation, run
diaginst from the \Dmi\Hpdiags
directory on the hard disk.
–or–
If TopTools is installed, use the DiagTools page to create the disk.
· On any computer with a CD-ROM drive, run
diaginst from the \Omnibook\Drivers\Hputils
directory on the OmniBook Recovery CD.
3-12 Troubleshooting and Diagnostics HP OmniBook XE2 · On any computer with World Wide Web access, download the diagnostic software package from the OmniBook website (see page vi), run this file to unpack the files, then run diaginst to create the diagnostic disk. Running the Diagnostic Test 1. Insert the diagnostic disk in the floppy drive—or press F10 in the next step. 2. Reboot the OmniBook. 3. Go through the first several screens. 4. When the hardware detection finishes, check the list of detected hardware. The following information and devices should be listed if applicable: Product name Cache memory Graphics adapter Processor type Main memory Serial ports BIOS version IDE drives Parallel port Serial number Audio device Note If a device is not detected or fails its test below, it may be configured incorrectly in the BIOS Setup utility (page 3-22). You can confirm the problem by running BIOS Setup and checking the settings. 5. Run the basic test. Press F2 to start the basic hardware test. 6. If you intend to exit without running advanced tests, press F4 to save system and test information in the Support Ticket log file, HPSUPPT.TXT. Then remove the diagnostic disk and press F3 to exit. 7. Run the advanced tests. Press F2 to open the advanced test screen. 8. Select and run the appropriate tests. Tests are not listed if no such hardware is detected. Press the following keys to run tests: ENTER Runs the highlighted test. F5 or SPACE Marks or unmarks the highlighted test. F6 Marks or unmarks all tests in the current menu. F7 Marks or unmarks all tests in all menus. F10 Runs all marked tests. If any test fails, the error is logged (error code and description) and displayed temporarily (error code). If several errors occur, look for patterns that might indicate a common cause. See the table on page 3-13 for repair suggestions. Consider these suggestions in combination with other troubleshooting information. 9. When you are finished running tests, press ESC to exit the advanced tests. 10. Press F4 to save system and test information in the Support Ticket log file, HPSUPPT.TXT. 11. Exit. Press F3 to exit and reboot. 12. Optional: Check the log. On any computer, open the HPSUPPT.TXT log file on the diagnostic disk using Notepad or other text editor. It contains a hardware summary and a list of all test results and errors.
HP OmniBook XE2 Troubleshooting and Diagnostics 3-13 Note that the serial and parallel port tests are more thorough if you connect a loop-back connector to the port before running the test for that port. See the wiring diagrams below. 14 125 13 6 19 5 Figure 3-3. Serial and Parallel Loopback Connectors Interpreting the Results · The following table lists test groups, error codes, and suggestions for follow-up actions. Consider these suggestions in combination with other troubleshooting information. Table 3-3. OmniBook Diagnostic Error Codes CodeSuggestions System Tests 0001h - 0008hReseat or replace the CPU module. 0009h Replace the motherboard. 0010h - 002FhReseat or replace the CPU module. 0030h - 0040hReplace the motherboard. 0041h Unrecognized interrupts. Run BIOS Setup and check IRQ assignments for all devices. 0050h - 0070hReplace the motherboard. 0071h Bad CMOS checksum. Reset the system, then run BIOS Setup and check settings. Replace motherboard. 0072h Configuration mismatch in CMOS. Reset the system, then run BIOS Setup and check settings. Replace motherboard. 0073h Bad CMOS RAM size. Reset the system, then run BIOS Setup and check settings. Replace motherboard. 0074h Bad CMOS time. Reset the system, then run BIOS Setup and check settings. Replace motherboard. 0075h - 0076hReset the system. Replace the motherboard. 0077h Replace the motherboard. 0078h Bad CMOS checksum. Reset the system, then run BIOS Setup and check settings. Replace motherboard. 0079h Replace the motherboard. 0083h - 0086hReplace the BIOS IC. Replace the motherboard. 0087h Replace the motherboard. 0088h Replace the BIOS IC. 0090h - 0096hReplace the BIOS IC. Replace the motherboard. 009Ah - 009EhReplace the BIOS IC. Replace the motherboard. 009Fh Insufficient DOS memory. Load fewer device drivers. 00A0h No repair. (ESCD not supported.) 00A1h Replace the BIOS IC. Replace the motherboard. 00A2h - 00A3hNo repair. (ESCD not supported.) 00A4h Replace the BIOS IC. 00A5h - 00A6hNo repair. (ESCD not supported.) 00A7h Replace the BIOS IC. Replace the motherboard. 00C0h - 00CChReplace the CPU module. 00FFh Rerun the test. (Possible diagnostic programming error.) Memory Tests The addresses below are absolute (32-bit) address. These addresses are not in the segment:offset format. 0100h - 0101hReplace the motherboard. 0102h Replace the BIOS IC. 0120h - 0150hFor the OB 4100 for 01FFFFFFh and below, replace the motherboard. Otherwise, replace the RAM board (each 01000000h represents 16MB). 0160h Address bus short. Remove any RAM board and rerun the test. Check the CPU module for shorts. Replace the motherboard. 0170h - 0172hReplace the motherboard. These connections are not used. Diodes are 1N4004 or equivalent (I F=1A, VF=1V@1A, VR=30-400V)
3-14 Troubleshooting and Diagnostics HP OmniBook XE2 0180h For the OB 4100 for 01FFFFFFh and below, replace the motherboard. Otherwise, replace the RAM board (each 01000000h represents 16MB). 0181h Replace the CPU module. 0182h Make sure that another application is not using all extended memory allocated by HIMEM.SYS. 0183h No extended memory. Check installation of the RAM board. Replace the motherboard. 0184h Remove or swap RAM boards. (OmniBook 4150 must have one RAM board present.) Replace the CPU module, replace the motherboard. 0190h - 01A0hFor the OB 4100 for 01FFFFFFh and below, replace the motherboard. Otherwise, replace the RAM board (each 01000000h represents 16MB). 01A1h - 01A4hReplace the CPU module. Hard Disk Tests 0201h Replace the hard disk. Replace the motherboard. 0202h - 0204hRerun the test. If error persists, replace the hard disk. 0205h Replace the motherboard. 0207h Run BIOS Setup and check the hard disk type. Check internal and external hard disk connectors and motherboard connector. Replace the hard disk. 0208h - 0209hTransient DMA error. Rerun the test. 020Ah - 0211hRerun the test. Run SCANDISK or equivalent. 0220h Replace the motherboard. 0240h Replace the hard disk. Replace the motherboard. 0280h Check internal and external hard disk connectors and motherboard connector. Replace the hard disk. 0281h Replace the hard disk. 0290h Rerun the test. If the error persists, replace the hard disk. 0293h - 0296hReplace the hard disk. 02AAh Check internal and external hard disk connectors and motherboard connector. Replace the hard disk. 02CCh Run BIOS Setup and check the hard disk type. Replace the hard disk or the motherboard. 02EEh For the performance test, run BIOS Setup and temporarily select a drive type that has more than 200 cylinders. 02F1h Recreate the Hibernate partition, then run FDISK to partition the hard disk. 02F2h Run FDISK to make one partition active. If necessary, recreate the Hibernate partition, then run FDISK to partition the hard disk. 02F3h Run FDISK to check for overlapping partitions. If necessary, recreate the Hibernate partition, then run FDISK to partition the hard disk. 02F4h Check for the presence of a boot sector virus. If necessary, recreate the Hibernate partition, then run FDISK to partition the hard disk. 02F5h Reformat the partition. 02F6h Recreate the Hibernate partition, then run FDISK to partition the hard disk. 02FFh Check internal and external hard disk connectors and motherboard connector. Replace the hard disk. Replace the motherboard. Floppy Disk Tests 0301h Replace the floppy drive. Replace the motherboard. 0302h Run BIOS Setup and check the floppy drive type. Replace the floppy drive. 0303h Insert a floppy disk without write protection. 0304h Run BIOS Setup and check the floppy drive type. Replace the floppy drive. 0305h Replace the motherboard. 0307h Run BIOS Setup and check the floppy drive type. Check the connectors on the floppy drive and motherboard. Replace the floppy drive. 0308h - 0309hTransient DMA error. Rerun the test. 030Ah - 0310hRerun the test with a good floppy disk. Replace the floppy drive. 0311h Rerun the test with another floppy disk. 0321h - 0322hReplace the floppy drive. 0340h Replace the motherboard. 0380h - 03AAhMake sure the floppy disk is fully inserted. Check the connectors on the floppy drive and motherboard. Replace the floppy drive. 03CCh Run BIOS Setup and check the floppy drive type. Rerun the test with another floppy disk. Replace the floppy drive. Replace the motherboard. 03EEh - 03FFhCheck the connectors on the floppy drive and motherboard. Rerun the test with another floppy disk. Replace the floppy drive. Replace the motherboard. Keyboard Tests 0400h - 0401hReplace the motherboard. 0410h - 0414hCheck the keyboard flex cable connection. Replace the keyboard. Replace the motherboard. 0415h Replace the VGA PCA for OB 4100 only. Replace the motherboard. 0416h - 0418hReplace the keyboard. Replace the motherboard. Serial Port Tests 0601h For the external loop-back test, make sure the loop-back connector is installed and constructed properly. For the external or internal loop-back test, replace the motherboard. 0602h Replace the motherboard.
HP OmniBook XE2 Troubleshooting and Diagnostics 3-15 0603h For the external loop-back test, make sure the loop-back connector is installed and constructed properly. For the external or internal loop-back test, replace the motherboard. 0604h - 0605hReplace the motherboard. 0606h For the external loop-back test, make sure the loop-back connector is installed and constructed properly. For the external or internal loop-back test, replace the motherboard. 0607h Make sure the loop-back connector is installed and constructed properly. Replace the motherboard. 0608h - 0617hReplace the motherboard. Parallel Port Tests 0701h For the external loop-back test, make sure the loop-back connector is installed and constructed properly. For the external or internal loop-back test, replace the motherboard. 0702h Replace the motherboard. 0703h Run BIOS Setup and disable ECP for the parallel port, then rerun the test. Replace the motherboard. 0704h - 0706hReplace the motherboard. 0707h Connect the loop-back connector. 0708h Replace the motherboard. Audio Tests 0801h - 0816hIf this error also occurs for an external headphone, replace the motherboard (or VGA PCA for the OB 4150). Otherwise, check the speaker connections, replace the speakers. If it occurs only for an external headphone, replace the audio jack PCA. 9003h - 9004h(See Microphone Tests near end of table.) Video Tests 0900h - 0901hReplace the VGA PCA. 0903h - 0906hReplace the LVDS PCA. Replace the VGA PCA. 0907h - 0908hReplace the VGA PCA. 0909h - 090AhReplace the LVDS PCA. Replace the VGA PCA. 090Ch - 090FhReplace the VGA PCA. 0920h Replace the LVDS PCA. Replace the VGA PCA. 8000h (See LCD Test near end of table.) CD-ROM Tests 0A00h Insert a CD in the drive. 0A01h Rerun the test. Replace the CD-ROM drive. 0A02h No repair. (Automatic close not supported.) 0A03h Insert a different CD in the drive. Check the connectors on the CD-ROM drive and motherboard. Replace the CD-ROM drive. 0A04h Insert a computer CD in the drive. 0A05h Insert a different CD in the drive. Check the connectors on the CD-ROM drive and motherboard. Replace the CD-ROM drive. 0A06h Insert an audio CD in the drive. SMBus Tests 0E00h - 0E10hReplace the motherboard. ATAPI Removable Tests (LS-120) 0F02h - 0F03hRerun the test. Insert a different disk in the LS- 120 drive. Check the connectors on the LS-120 drive and motherboard. Replace the LS-120 drive. 0F04h - 0F05hReplace the LS-120 drive. TI CardBus Tests 1201h Memory space not available. Remove any attached ISA or PCI cards. 1202h - 1203hReplace the motherboard. 1205h - 1206hInsert a different PC Card. Replace the PCMCIA socket. Replace the motherboard. USB Tests 1301h Reprogram the BIOS IC. Replace the BIOS IC. Replace the motherboard. 1302h - 1312hReplace the motherboard. 9006h (See USB Port Test near end of table.) LCD Test 8000h If the test fails with an external monitor (must support VESA mode 105h), replace the VGA PCA, replace the motherboard. Otherwise: - If the shaded-band test fails, check the LCD flex cable connection in the bottom case, replace the LVDS PCA, replace the LCD flex cable, replace the VGA PCA, replace the motherboard. - If only a solid-color test fails, see chapter 5 for cosmetic guidelines, replace the LCD module. Microphone/Line-In Tests 9003h If the error occurs for built-in and external microphones, replace the motherboard (or VGA PCA for the OB 4150). If it occurs for only the built-in microphone, check the LCD flex cable connection, replace the inverter PCA. If it occurs only for an external microphone, replace the audio jack PCA. 9004h Replace the audio jack PCA. Replace the motherboard (or VGA PCA for the OB 4150). Suspend/Resume Test 9005h Run BIOS Setup and restore default settings. Reprogram the BIOS IC. Replace the BIOS IC. Replace the motherboard. USB Port Test 9006h Make sure a USB device is connected to the port you are testing. Select the correct speed for the device. Replace the motherboard (or dock component, if applicable).
3-16 Troubleshooting and Diagnostics HP OmniBook XE2 IR Tests (FIR enabled, undocked) 9002h, 9007h - 9008hRerun the test. Replace the motherboard. 9009h Do not run this test in Windows. For the one- unit test, replace the motherboard. For the two- unit test, make sure the IR ports on the reflector and test computers are lined up, replace the IR PCA, replace the motherboard. 900Ah Rerun the test. For the two-unit test, make sure the IR ports on the reflector and test computers are lined up. Replace the IR PCA, replace the motherboard. 900Ch Rerun the test. Make sure the IR ports on the reflector and test computers are lined up. Restart the reflector unit. Replace the IR PCA, replace the motherboard. Power-On Self-Test Note If Quiet Boot is enabled in BIOS Setup (the default setting), press ESC during boot to see POST messages. The POST (Power-On Self-Test) is a series of initialization routines and diagnostic tests that the system BIOS runs when the computer boots. The system BIOS will not boot the operating system if system memory, the CPU, DMA, or the interrupt controller fails the POST diagnostic tests. POST progress is indicated by a sequence of codes. If possible, error messages are displayed. You should not interpret the failure of one or more POST tests as a hardware, software, or firmware failure. First, confirm the failure with a “clean” boot: · Remove all accessories, including RAM boards, floppy drive, port replicator, PC Cards, printer, external monitor, pointing device, and keyboard. · Provide “clean” AC power—no auto adapter or unusual AC adapter configuration. · Press the system-off button to start from a known state. If the computer fails to boot with a clean boot, it requires repair. If an error message is displayed, confirm the problem using other diagnostic tools. Not all POST messages indicate a hardware, software, or firmware failure—some messages are informational messages. If the BIOS detects a terminal error condition, it halts POST after issuing a terminal error beep code— up to four groups of 1 to 4 short beeps. The beep code indicates the POST routine in which the terminal error occurred. The BIOS also issues a beep code (one long tone followed by two short tones) during POST if the video configuration fails (no card installed or faulty) or if an external ROM module does not properly checksum to zero.
HP OmniBook XE2 Troubleshooting and Diagnostics 3-17 Table 3-4. POST Terminal-Error Beep Codes Beep CodesPOST Description 1 One short beep before boot 1-2 Search for option ROMs. One long, two short beeps on checksum failure 1-2-2-3 BIOS ROM checksum 1-3-1-1 Test DRAM refresh 1-3-1-3 Test 8742 Keyboard Controller 1-3-4-1 RAM failure on address line xxxx 1-3-4-3 RAM failure on data bits xxxx of low byte of memory bus 1-4-1-1 RAM failure on data bits xxxx of high byte of memory bus 2-1-2-3 Check ROM copyright notice 2-2-3-1 Test for unexpected interrupts The following table lists POST messages and explanations for reported problems. If the system fails after you make changes in BIOS Setup, reset the computer, enter BIOS Setup, and install the defaults or correct the error. Table 3-5. POST Messages MessageDescription 0200 Failure Fixed Disk Fixed disk is not working or not configured properly. Check to see if fixed disk is attached properly. Run Setup. Find out if the fixed-disk type is correctly identified. 0210 Stuck key Stuck key on keyboard. 0211 Keyboard error Keyboard not working. 0212 Keyboard Controller Failed Keyboard controller failed test. May require replacing keyboard controller. 0213 Keyboard locked - Unlock key switch Unlock the system to proceed. 0220 Monitor type does not match CMOS - Run SETUP Monitor type not correctly identified in Setup 0230 Shadow Ram Failed at offset: nnnnShadow RAM failed at offset nnnn of the 64k block at which the error was detected. 0231 System RAM Failed at offset: nnnnSystem RAM failed at offset nnnn of in the 64k block at which the error was detected. 0232 Extended RAM Failed at offset: nnnnExtended memory not working or not configured properly at offset nnnn. Update to the latest BIOS version 2.xx. (Service note 4100-06.) 0250 System battery is dead - Replace and run SETUP The CMOS clock battery indicator shows the battery is dead. Connect the AC adapter for at least 24 hours, replace the motherboard. 0251 System CMOS checksum bad - Default configuration used System CMOS has been corrupted or modified incorrectly, perhaps by an application program that changes data stored in CMOS. The BIOS installed Default Setup Values. If you do not want these values, enter Setup and enter your own values. If the error persists, check the system battery. Connect the AC adapter for at least 24 hours, replace the motherboard. 0260 System timer error The timer test failed. Requires repair of system board. 0270 Real time clock error Real-time clock fails BIOS test. May require board repair. 0280 Previous boot incomplete - Default configuration used Previous POST did not complete successfully. POST loads default values and offers to run Setup. If the failure was caused by incorrect values and they are not corrected, the next boot will likely fail. This error is cleared the next time the system is booted. 0281 Memory Size found by POST differed from CMOS Memory size found by POST differed from CMOS.
3-18 Troubleshooting and Diagnostics HP OmniBook XE2 MessageDescription 02B0 Diskette drive A error 02B1 Diskette drive B error Drive A: or B: is present but fails the BIOS POST diskette tests. Check to see that the drive is defined with the proper diskette type in Setup and that the diskette drive is attached correctly. 02B2 Incorrect Drive A type - run SETUP Type of floppy drive A: not correctly identified in Setup. 02B3 Incorrect Drive B type - run SETUP Type of floppy drive B: not correctly identified in Setup. 02D0 System cache error - Cache disabled RAM cache failed and BIOS disabled the cache. On older boards, check the cache jumpers. You may have to replace the cache. See your dealer. A disabled cache slows system performance considerably. 02F0: CPU ID: CPU socket number for Multi-Processor error. 02F4: EISA CMOS not writeable ServerBIOS2 test error: Cannot write to EISA CMOS. 02F5: DMA Test Failed ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers. 02F6: Software NMI Failed ServerBIOS2 test error: Cannot generate software NMI (Non-Maskable Interrupt). 02F7: Fail-Safe Timer NMI Failed ServerBIOS2 test error: Fail-Safe Timer takes too long. device Address Conflict Address conflict for specified device. Allocation Error for: deviceRun ISA or EISA Configuration Utility to resolve resource conflict for the specified device. CD ROM Drive CD ROM Drive identified. Entering SETUP ... Starting Setup program Failing Bits: nnnnThe hex number nnnn is a map of the bits at the RAM address which failed the memory test. Each 1 (one) in the map indicates a failed bit. See errors 230, 231, or 232 above for offset address of the failure in System, Extended, or Shadow memory. Fixed Disk nFixed disk n (0-3) identified. Invalid System Configuration Data Problem with NVRAM (CMOS) data. I/O device IRQ conflict I/O device IRQ conflict error. PS/2 Mouse Boot Summary Screen: PS/2 Mouse installed. nnnn kB Extended RAM Passed Where nnnn is the amount of RAM in kilobytes successfully tested. nnnn Cache SRAM Passed Where nnnn is the amount of system cache in kilobytes successfully tested. nnnn kB Shadow RAM Passed Where nnnn is the amount of shadow RAM in kilobytes successfully tested. nnnn kB System RAM Passed Where nnnn is the amount of system RAM in kilobytes successfully tested. Operating system not found Operating system cannot be located on either drive A: or drive C:. Enter Setup and see if fixed disk and drive A: are properly identified. Parity Check 1 nnnnParity error found in the system bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????. Parity is a method for checking errors in binary data. A parity error indicates that some data has been corrupted. Parity Check 2 nnnnParity error found in the I/O bus. BIOS attempts to locate the address and display it on the screen. If it cannot locate the address, it displays ????.