HP Omnibook Xe2 Service Manual

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...

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)...

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.
 ·...

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...

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....

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...

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...

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...

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...

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...