HP Omnibook 900 Service Manual

HP OmniBook 900 Troubleshooting and Diagnostics 3-11
SymptomCall Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Computer pauses
or runs sluggishlyMay be normal W indows
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...

3-12 Troubleshooting and Diagnostics HP OmniBook 900
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 3-18).
 · Sycard PCCtest 450 PC Card (page 3-21).
 · Desktop Management Interface (page 3-22).
 · BIOS Setup utility (page 3-24).
OmniBook Diagnostic Program
The OmniBook hardware diagnostic program provides two levels of testing:
 · User-level...

HP OmniBook 900 Troubleshooting and Diagnostics 3-13
Running the Diagnostic Test
 1. If you’re using a diagnostic floppy disk, insert it 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 (OB 900†)
BIOS...

3-14 Troubleshooting and Diagnostics HP OmniBook 900
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....

HP OmniBook 900 Troubleshooting and Diagnostics 3-15
CodeSuggestions
0180hFor 01FFFFFFh (OB900†) or 03FFFFFFh
(OB900B) and below, replace the motherboard.
Above that, replace the RAM board (each
01000000h represents 16MB).
0181h Replace the CPU module.
0182h Unload HIMEM.SYS or make sure that another
application is not using all extended memory
allocated by HIMEM.SYS.
0183h No extended memory. Check installation of any
RAM board. Replace the motherboard.
0184h Remove or swap RAM boards. Replace the
CPU...

3-16 Troubleshooting and Diagnostics HP OmniBook 900
CodeSuggestions
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,
external module bay, 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....

HP OmniBook 900 Troubleshooting and Diagnostics 3-17
CodeSuggestions
1202h -
1203hReplace the motherboard.
1205h -
1206hInsert a different PC Card. Replace the
PCMCIA socket. Replace the motherboard.
1207h Reboot the computer. Replace the
motherboard.
USB Tests
1301h Reprogram the BIOS IC. Replace the BIOS IC.
Replace the motherboard.
1302h -
1316hReplace the motherboard.
9006h (See USB Port Test near end of table.)
ACPI Tests
1701h -
1702hReprogram the BIOS IC. Replace the BIOS IC,
replace the...

3-18 Troubleshooting and Diagnostics HP OmniBook 900
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...

HP OmniBook 900 Troubleshooting and Diagnostics 3-19
MessageDescription
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...

3-20 Troubleshooting and Diagnostics HP OmniBook 900
MessageDescription
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...