compaq notebook evo n160 series User Manual

1–16Maintenance and Service Guide
Product Description
The keyboard components are shown in Figure 1-4 and described 
in Table 1-3.
Figure 1-4. Keyboard Components 

Product Description
Maintenance and Service Guide1–17
Ta b l e  1 - 3
Keyboard Components
Item Component Function
1
F1 through F12 
function keysPerform preset functions.
2
Caps lock key Turns on the caps lock function.
3
Fn key Used with hotkeys to perform preset hotkey 
functions.
4 Windows logo key Displays Windows Start menu.
5 Windows application 
keyDisplays a menu when using a Microsoft 
application. The menu is the same one that 
is displayed by pressing the right mouse 
button.
6 Cursor control...

1–18Maintenance and Service Guide
Product Description
The components on the top of the computer are shown in 
Figure 1-5 and described in Table 1-4.
Figure 1-5. Top Components
Table 1-4
Top Components
Item Component Function
1 Vent Allows airflow to cool internal components.
ÄCAUTION: To prevent damage, the 
computer shuts down if an 
overheating condition occurs. Do 
not block the cooling vent. Avoid 
placing the computer on a blanket, 
rug, or other flexible surface that 
may cover the vent area.
2...

Product Description
Maintenance and Service Guide1–19 4 Power button Turns on the computer. Use the operating 
system Shut Down command to turn off the 
computer.
5 Easy Access buttons Provide quick access to the Internet. Refer 
to the Hardware Guide that ships with the 
computer for information about these 
buttons.
6 Power light On: Power is turned on.
Blinking: Computer is in Standby. The 
power light also blinks if a battery pack that 
is the only available power source reaches 
a low-battery...

1–20Maintenance and Service Guide
Product Description
The external components on the bottom of the computer are 
shown in Figure 1-6 and described in Table 1-5.
Figure 1-6. Bottom Components 
Table 1-5
Bottom Components
Item Component Function
1 Hard drive retention screw Secures the hard drive to the 
computer.
2 Hard drive bay Supports the removable primary 
hard drive. The hard drive is 
secured to the computer by one 
screw. 

Product Description
Maintenance and Service Guide1–21 3 Memory expansion 
compartment coverCovers the memory expansion 
compartment that contains two 
memory expansion slots for 
memory expansion boards.
4 Docking connector Connects the computer to an 
optional port replicator.
5 Stereo speakers Produce stereo sound.
6 Serial number Identifies the computer; needed 
when you call Compaq customer 
support.
7 Certificate of Authenticity label Contains the Product Key, which 
may need to be entered before...

1–22Maintenance and Service Guide
Product Description
1.5 Design Overview
This section presents a design overview of key parts and features 
of the computer. Refer to Chapter 3, “Illustrated Parts Catalog,” to 
identify replacement parts, and Chapter 5, “Removal and 
Replacement Procedures,” for disassembly steps. The system 
board provides the following device connections:

Memory expansion board

Hard drive

Display

Keyboard/TouchPad or pointing stick

Audio

Intel Pentium III processors

Fan

PC...

Maintenance and Service Guide2–1
2
Troubleshooting
ÅWARNING: Only authorized technicians trained by Compaq should 
repair this equipment. All troubleshooting and repair procedures 
are detailed to allow only subassembly/module level repair. 
Because of the complexity of the individual boards and 
subassemblies, no one should attempt to make repairs at the 
component level or make modifications to any printed wiring board. 
Improper repairs can create a safety hazard. Any indication of 
component...

2–2Maintenance and Service Guide
Troubleshooting
Troubleshooting Flowcharts
Table 2-1
Troubleshooting Flowcharts Overview
Section Description
2.1 Initial troubleshooting
2.2 No power, part 1
2.3 No power, part 2
2.4 No power, part 3
2.5 No power, part 4
2.6 No video, part 1
2.7 No video, part 2
2.8 Nonfunctioning docking station
2.9 No operating system (OS) loading
2.10 No OS loading from hard drive, part 1
2.11 No OS loading from hard drive, part 2
2.12 No OS loading from hard drive, part 3
2.13 No OS...

Troubleshooting
Maintenance and Service Guide2–3
Initial Troubleshooting
Connecting
to network
or modem?Go to
Section 2.20,
No Network
or Modem
Connection.
Begin
Troubleshooting.
Is there
power?
Is the OS
loading? Is there video?
(no boot)
Is there
sound?Beeps,
LEDs, or error
Messages?
Keyboard/
pointing
device
working?Go to
Section 2.17,
Nonfunctioning
Device. Go to
Section 2.2,
No Power.
Go to
Section 2.6,
No Video.All drives
working?
Y
Y
Y
Y
YY
Y
Y N N
N
N
N
End
N
N
N
Go to
Section 2.9,
No OS...