compaq evo n115 User Manual

							1–16Maintenance and Service Guide
Product Descr iption
The keyboard components are shown in Figure 1-5 and described 
in Table 1-5.
Figure 1-5. Keyboar d Components
263816m1.book  Page 16  Friday, January 25, 2002  2:14 PM 
						

							Product Description
Maintenance and Ser vice Guide 1–17
Ta b l e  1 - 5
Keyboard Components
Item Component Function
1
F1 through F12 
function keys Perform preset functions.
2 Num lock key Turns on the numeric lock function.
3 Embedded numeric  keypad Converts keys to numeric keypad.
4 Cursor control keys Move the cursor around the screen.
5 Windows application  key Displays a menu when using a Microsoft 
application. The menu is the same one that 
is displayed by pressing the right mouse 
button.
6 Windows logo keys Displays the Windows Start menu.
7
Fn key Used with hotkeys to perform preset hotkey  functions.
263816m1.book  Page 17  Friday, January 25, 2002  2:14 PM 
						

							1–18Maintenance and Service Guide
Product Descr iption
The components on the top of the computer are shown in 
Figure 1-6 and described in Table 1-6.
Figure 1-6. Top Components
Table 1-6
Top Components
Item Component Function
1 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.
2 Num lock light On: Num lock is on and the embedded  numeric keypad is enabled.
3 Drive activity light Turns on when the hard drive, CD-, or  DVD-ROM drive is accessed.
263816m1.book  Page 18  Friday, January 25, 2002  2:14 PM 
						

							Product Description
Maintenance and Ser vice Guide 1–19
4 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.
5 Easy Access buttons (3) Provide quick access to the Internet. Refer  to the 
Hardware Guide that ships with the 
computer for information about these 
buttons.
6 Power button Turns on the computer. Use the operating  system Shut Down command to turn off the 
computer.
7 Digital audio button Launches Windows Media Player to play  MP3 music.
8 Volume control buttons Adjust the volume of the stereo speakers.
9 Caps lock light On: Caps lock is on.
10 Drive activity light Turns on when the hard drive, CD-, or  DVD-ROM drive is accessed.
11 Display lid switch Turns off the computer display if the  computer is closed while on.
12 Stereo speakers Produce stereo sound.
13 TouchPad buttons Function like the left and right mouse  buttons on an external mouse.
14 TouchPad Moves the mouse cursor, selects, and  activates.
15 EasyScroll button Scrolls the screen left, right, up, and down.
16 Display release latch Opens the computer.
Table 1-6
Top Components (Contin ued)
Item Component Function
263816m1.book  Page 19  Friday, January 25, 2002  2:14 PM 
						

							1–20Maintenance and Service Guide
Product Descr iption
The external components on the bottom of the computer are 
shown in Figure 1-7 and described in Table 1-7.
Figure 1-7. Bottom Components 
Table 1-7
Bottom Components
Item Component Function
1 Tilt feet Tilt the computer for ease of use.
2 Vents Allow 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.
3 Memory expansion  compartment Covers the memory expansion 
compartment that contains two 
memory expansion slots for 
memory expansion boards.
263816m1.book  Page 20  Friday, January 25, 2002  2:14 PM 
						

							Product Description
Maintenance and Ser vice Guide 1–21
4 Battery pack release switch Releases the battery pack from 
the battery compartment.
5 Battery bay Accepts an 8-cell Lithium ion  (li ion) battery pack.
6 Label area Contains the serial number and  Microsoft Certificate of Authenticity 
labels, which may be needed 
when you call Compaq customer 
support or use some Windows 
operating systems.
7 Hard drive retention screw Secures the hard drive to the  computer.
8 Hard drive bay Supports the removable primary  hard drive. The hard drive is 
secured to the computer by one 
screw.
9 Mini PCI compartment Contains the mini PCI modem  card.
Table 1-7
Bottom Components (Continued)
Item Component Function
263816m1.book  Page 21  Friday, January 25, 2002  2:14 PM 
						

							1–22Maintenance and Service Guide
Product Descr iption
1.6 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

AMD Athlon and Duron 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.
263816m1.book  Page 22  Friday, January 25, 2002  2:14 PM 
						

							Maintenance and Service Guide 2–1
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 to 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.
2.1 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, anfd 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.
263816m1.book  Page 1  Friday, January 25, 2002  2:14 PM 
						

							2–2Maintenance and Service Guide
Troub leshooting
2.2 Troubleshooting Flowcharts
Ta b l e  2 - 1
Troubleshooting Flowcharts Overview
Flowchart 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
263816m1.book  Page 2  Friday, January 25, 2002  2:14 PM 
						

							Troub leshooting
Maintenance and Ser vice Guide 2–3
Flowchart 2.1 - Initial Troubleshooting
Connecting
to network
or modem?
Begin
troubleshooting.
Is there power?
Is the OS loading?
Is there video?
(no boot)
Is theresound? 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
Y Y
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.
Go to
Section 2.20,
No Network or  Modem.
263816m1.book  Page 3  Friday, January 25, 2002  2:14 PM