compaq 800 notebook series User Manual

2–22Maintenance and Service Guide
Troubleshooting
Flowchart 2.12—No OS Loading from Hard Drive, Part 3
Y
System
files on hard
drive? Continued from
Section 2.11,
No OS Loading
from Hard Drive,
Part 2.
Clean virus.
Done
N
Install OS
and reboot.
Virus
on hard
drive?OS
loading from
hard drive?
Y
NY
N
Y
N
Diagnostics
on diskette?Replace
hard drive.
Run diagnostics
and follow
recommendations. Run SCANDISK 
and check for
bad sectors.
Can bad
sectors
be fixed?Replace
hard drive.
YN
YN
Fix bad
sectors.Boot from...

Troubleshooting
Maintenance and Service Guide2–23
Flowchart 2.13—No OS Loading from CD- or
DVD-ROM Drive
Y
Done
N
Bootable
disc in
drive? Disc
in drive? No OS
Loading from
CD- or
DVD-ROM Drive.Install bootable
disc and
reboot
notebook.
Go to
Section 2.16,
Nonfunctioning
Device.
Go to
Section 2.16,
Nonfunctioning
Device. Install
bootable disc.
Boots from
CD or DVD?
Boots from
CD or DVD?Try another
bootable disc.
Booting
from another
device?
Booting
order
correct?
Correct boot
order using
the setup...

2–24Maintenance and Service Guide
Troubleshooting
Flowchart 2.14—No Audio, Part 1
No Audio.
N
Notebook in
docking station
(if applicable)?Internal
audio?
Audio? Done
Undock
Audio? Done Turn up audio
internally or
externally.
Go to
Section 2.15,
No Audio, Part 2.
Go to
Section 2.15,
No Audio, Part 2.
Go to
Section 2.16,
Nonfunctioning
Device.Replace the following docking station 
components one at a time as applicable. 
Check after each change.
1. Reseat docking station audio cable.
2. Replace audio...

Troubleshooting
Maintenance and Service Guide2–25
Flowchart 2.15—No Audio, Part 2
YN
Continued from 
Section 2.14,
No Audio, Part 1.
Reload
audio drivers. Audio
driver in OS
configured?
Audio?
Y Y
Y N N N
Correct
drivers for
application?
Connect to
external
speaker.Load drivers 
and set
configuration
in OS.
Audio? Done Replace audio
board and
speaker
connections
in notebook 
(if applicable).
1. Replace internal speakers.
2. Replace audio board (if applicable).
3. Replace system board.
307503-002.book...

2–26Maintenance and Service Guide
Troubleshooting
Flowchart 2.16—Nonfunctioning Device
Done
Any physical
device detected?
Y
N
Unplug the nonfunctioning device from
the notebook, inspect cables and plugs for
bent or broken pins or other damage.
Reseat 
device.
Clear
CMOS.
DoneFix or
replace
broken item. Nonfunctioning
device.
Reattach device.
Close notebook,
plug in power
and reboot.
Device
boots
properly?Go to
Section 2.9,
No OS Loading.
Device
boots
properly? Possible bad
hard drive.
Replace drive....

Troubleshooting
Maintenance and Service Guide2–27
Flowchart 2.17—Nonfunctioning Keyboard
Y
N
OK? Keyboard
not operating 
properly.
External
device
works?Replace
system
board.
Replace
system
board. Connect notebook
to good external 
keyboard.
Reseat internal 
keyboard
connector
(if applicable).
Replace internal
keyboard or
cable.
OK?
Y N
Y
N
DoneDone
307503-002.book  Page 27  Thursday, January 30, 2003  1:04 PM 

2–28Maintenance and Service Guide
Troubleshooting
Flowchart 2.18—Nonfunctioning Pointing Device
Y
N
OK? Pointing device
not operating
properly.
External
device
works?Replace
system
board.
Replace
system
board. Connect notebook
to good external
pointing device.
Reseat internal
pointing device
connector 
(if applicable).
Replace internal
pointing device 
or cable.
OK?
Y N
Y
N
DoneDone
307503-002.book  Page 28  Thursday, January 30, 2003  1:04 PM 

Troubleshooting
Maintenance and Service Guide2–29
Flowchart 2.19—No Network or Modem Connection
Y
Disconnect all
power from
the notebook
and open.
No network
or modem 
connection.
N
Done Digital
line?
Network
or modem jack 
active?Replace jack 
or have jack 
activated.
Connect
to nondigital
line.
NIC/modem 
configured 
in OS?Reload
drivers and 
reconfigure.
Reseat 
NIC/modem
(if applicable).Replace 
NIC/modem
(if applicable).
Replace
system
board.OK?
OK? Done
N N
N N Y
Y Y
Y
307503-002.book  Page 29...

Maintenance and Service Guide3–1
3
Illustrated Parts Catalog
This chapter provides an illustrated parts breakdown and a 
reference for spare part numbers and option part numbers.
3.1 Serial Number Location
When ordering parts or requesting information, provide the 
notebook serial number and model number located on the bottom 
of the notebook (Figure 3-1).
Figure 3-1. Serial Number Location
307503-002.book  Page 1  Thursday, January 30, 2003  1:04 PM 

3–2Maintenance and Service Guide
Illustrated Parts Catalog
3.2 Notebook System Major Components
Figure 3-2. Notebook System Major Components
307503-002.book  Page 2  Thursday, January 30, 2003  1:04 PM