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 keys Move the cursor around the screen.
7 Embedded numeric 
keypadConverts keys to numeric keypad. 
						

							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 Volume control buttons Adjust the volume of the stereo speakers.
3 Digital audio button Launches Windows Media Player to play 
MP3 music. 
						

							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 condition.
7 Num lock light On: 
Num lock is on and the embedded 
numeric keypad is enabled.
8 Caps lock light On: 
Caps lock is on.
9 Scroll lock light On: 
Scroll is on.
10 Display lid switch Turns off the computer display if the 
computer is closed while on.
11 TouchPad Moves the mouse cursor, selects, and 
activates.
12 Left and right 
TouchPad buttonsFunction like the left and right mouse 
buttons on an external mouse.
13 Easy Scroll button Scrolls the screen left, right, up, and down.
14 Drive indicator light Turns on when the hard drive, CD-, or 
DVD-ROM drive is accessed.
15 Battery light On: A battery pack is charging.
Blinking: A battery pack that is the only 
available power source has reached a 
low-battery condition.
Table 1-4
Top Components (Continued)
Item Component Function 
						

							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 
using some Windows operating 
systems.
8 Battery bay Accepts a 9- or 6-cell Lithium ion 
(li ion) battery pack.
9 Battery pack release switch Releases the battery pack from 
the battery compartment.
10 Modular media bay Accepts a diskette drive or optical 
drive.
11 Modular media bay 
release switchReleases the modular media bay 
device from the connector.
Table 1-5
Bottom Components (Continued)
Item Component Function 
						

							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 Card

Modem or modem/NIC
The computer uses an electrical fan for ventilation. The fan is 
controlled by a temperature sensor and is designed to turn on 
automatically when high temperature conditions exist. These 
conditions are affected by high external temperatures, system 
power consumption, power management/battery conservation 
configurations, battery fast charging, and software applications. 
Exhaust air is displaced through the ventilation grill located on 
the left side of the computer.
Ä
CAUTION: To properly ventilate the computer, allow at least a 
3-inch (7.6 cm) clearance on the left and right sides of the 
computer. 
						

							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 replacement or printed wiring board modification may 
void any warranty or exchange allowances.
Utilities that are preinstalled on the computer include:

PhoenixBIOS Setup Utility—Allows you to modify or 
restore factory default settings and configure the system 
BIOS to diagnose and solve minor problems.

Power Management—Allows you to reduce your computer 
power consumption.

Security—Allows you to set or remove your power-on 
password.
Using the PhoenixBIOS Setup Utility
The PhoenixBIOS Setup Utility (PSU) is built into the system. 
You can configure the system BIOS and modify or restore factory 
default settings, such as date and time, types of disk drives, power 
management, and password settings. To run PSU, press the 
F10 
key during system startup. When the main screen displays, use 
the keyboard and arrow keys to move around the menus and make 
selections. 
						

							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 loading from diskette drive
2.14 No OS loading from CD- or DVD-ROM drive
2.15 No audio, part 1
2.16 No audio, part 2
2.17 Nonfunctioning device
2.18 Nonfunctioning keyboard
2.19 Nonfunctioning pointing device
2.20 No network or modem connection 
						

							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 Loading.
Go to
Section 2.15,
No Audio.Go to
Section 2.18,
Nonfunctioning
Keyboard,
or Section 2.19,
Nonfunctioning
Pointing Device. Check
LED board,
speaker
connections.