compaq notebook evo n150 series User Manual

2–18Maintenance and Service Guide
Troubleshooting
2.15 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 2.16,
No Audio, Part 2.
Go to
Section 2.16,
No Audio, Part 2.
Go to
Section 2.17,
Non Functioning
DeviceReplace the following docking station
components one at a time as applicable.
Check after each change.
1. Reseat docking station audio cable.
2. Replace audio cable.
3. Replace...

Troubleshooting
Maintenance and Service Guide2–19
2.16 No Audio, Part 2
YN
Continued from
Section 2.15,
No Audio, Part 1.
Reload
audio drivers. Audio
driver in OS
configured?
Audio?
1. Replace internal speakers.
2. Replace audio board, if applicable.
3. Replace system board.
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. 

2–20Maintenance and Service Guide
Troubleshooting
2.17 Non Functioning Device
Done
Any
physical
device?
Y
N
Unplug the Non Functioning 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. Non
functioning
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.
Possible bad
diskette...

Troubleshooting
Maintenance and Service Guide2–21
2.18 Non Functioning 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 

2–22Maintenance and Service Guide
Troubleshooting
2.19 Non Functioning 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 

Troubleshooting
Maintenance and Service Guide2–23
2.20 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 non digital
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 

Maintenance and Service Guide3–1
3
Illustrated Parts Catalog
This chapter provides an illustrated parts breakdown and a
reference for spare part numbers.
3.1 Serial Number Location
When ordering parts or requesting information, provide the
computer serial number and model number located on the bottom
of the computer (Figure 3-1).
Figure 3-1. Serial Number Location 

3–2Maintenance and Service Guide
Illustrated Parts Catalog
3.2 Computer System Major Components
Figure 3-2. Computer System Major Components 

Illustrated Parts Catalog
Maintenance and Service Guide3–3
Ta b l e 3 - 1
Computer System Major Components
Item DescriptionSpare Part
Number
114.1-inch, XGA, CTFT display239029-001
Miscellaneous Plastics Kit239039-001
2a
2bLeft hinge cover
Right hinge coverNot Illustrated:

Computer feet

PC Card doors

Hard drive bezel
Keyboard
3Czech
Danish
European
French
French
Canadian
German
Hebrew
Hungarian
International
Italian
Japanese239054-221
239054-081
239054-021
239054-051
239054-121
239054-041
239054-BB1...

3–4Maintenance and Service Guide
Illustrated Parts Catalog
Computer System Major Components (continued)