compaq notebook evo n150 series User Manual

							1–6Maintenance and Service Guide
Product Description

Connectors for:
RJ-11 modem
universal serial bus
stereo line out/headphone
parallel
serial
external keyboard/mouse
RJ-45 network
external monitor
AC power

Stereo speakers providing Compaq PremierSound 16-bit
stereo sound
1.2 Clearing a Password
If the notebook you are servicing has an unknown password,
follow these steps to clear the password. These steps also
clear CMOS.
1. Prepare the computer for disassembly. Refer to Section 5.3,
“Preparing the Computer for Disassembly,” for more
information.
2. Remove the RTC battery. Refer to Section 5.19, “Disk Cell
Real Time Clock (RTC) Battery,” for more information.
3. Wait approximately five minutes. 
						

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Maintenance and Service Guide1–7
4. Replace the RTC battery and reassemble the computer.
5. Connect AC power to the computer. Donotreinsert any
battery packs at this time.
6. Turn on the computer.
All passwords and all CMOS settings are clear.
1.3 Power Management
The computer comes with a collection of power management
features that extend battery operating time and conserve power.
The computer supports the following power management
features:

Standby

Hibernation

Smart battery that provides an accurate battery power gauge

Battery calibration

Lid switch suspend/resume

Power button

Advanced Configuration and Power Management (ACP)
compliant 
						

							1–8Maintenance and Service Guide
Product Description
1.3 External Computer Components
The external components on the front and left side of the
computer are shown in Figure 1-2 and described in Table 1-2.
.
Figure 1-2. Front and Left Side Components
Ta b l e 1 - 2
Front and Left Side Panel Components
Item Component Function
1 Security cable slot Attaches an optional security cable to the
computer.
2 Vent Allows airflow to cool internal components.
ÄCAUTION:To prevent damage, the
computer will shut down if a severe
overheating condition occurs. To
prevent loss of information, do not
block the cooling vent. Avoid
placing the computer on a blanket,
rug, or other flexible surface that
may cover the vent area. 
						

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Maintenance and Service Guide1–9
3 Air intake vent Cools internal components.
4 RJ-11 jack (internal
modem models only)Connects the modem cable to an internal
modem. A modem cable is included with
internal modem models.
5 USB connector Connects USB devices.
6 PC Card slots (2) Support a 32-bit (CardBus) or 16-bit
PC Card.
7 PC Card eject buttons Eject a PC Card from a PC Card slot.
8Stereoline-out/
headphone jackConnects stereo speakers, headphones,
headset, or television audio.
9 Stereo line-in jack Connects a CD player, tuner, or tape deck.
10 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.
11 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.
12 Hard drive Supports the removable primary hard drive.
Two screws secure the hard drive to the
computer.
Ta b l e 1 - 2
Front and Left Side Panel Components(Continued)
Item Component Function 
						

							1–10Maintenance and Service Guide
Product Description
The computer right side and rear panel components are shown in
Figure 1-3 and described in Table 1-3.
Figure 1-3. Right Side and Rear Panel Components
Ta b l e 1 - 3
Right Side and Rear Panel Components
Item Component Function
1 Media Bay Accepts a diskette drive, CD- or DVD-ROM
drive, or secondary battery pack.
2 Infrared port Links to another IrDA-compliant device for
wireless communication. 
						

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Maintenance and Service Guide1–11
3 Parallel connector Connects a parallel device.
4 Serial connector Connects a serial device.
5 Keyboard/mouse
connectorConnects an external keyboard or
PS/2-compatible external mouse.

To connect a keyboard and a
mouse at the same time, use an
optional Y-adapter.
6RJ-45jack(network
models only)Connects the network cable. A network
cable is not included with the computer.
7 USB connectors Connect USB devices.
8 External monitor
connectorConnects an external monitor or overhead
projector.
9 DC power jack Connects any one of the following items:

AC Adapter

Optional Automobile Power
Adapter/Charger

Optional Aircraft Power Adapter
Ta b l e 1 - 3
Right Side and Rear Panel Components(Continued)
Item Component Function 
						

							1–12Maintenance and Service Guide
Product Description
The keyboard components are shown in Figure 1-4 and described
in Table 1-4.
Figure 1-4. Keyboard Components 
						

							Product Description
Maintenance and Service Guide1–13
Ta b l e 1 - 4
Keyboard Components
Item Component Function
1
F1throughF12
function keysPerform preset functions.
2 Embedded numeric
keypadConverts keys to numeric keypad.
3 Cursor control keys Move the cursor around the screen.
4 Windows application
keyDisplaysamenuwhenusingaMicrosoft
application. The menu is the same that is
displayed by pressing the right mouse
button.
5 Windows logo key Displays the Windows Start menu.
6
Fnkey Used with hotkeys to perform preset hotkey
functions.
7 Caps lock key Turns on the caps lock function. 
						

							1–14Maintenance and Service Guide
Product Description
The components on the top of the computer are shown in
Figure 1-5 and described in Table 1-5.
Figure 1-5. Top Components
Ta b l e 1 - 5
Top Components
Item Component Function
1 Power button Turns on the computer. To turn off the
computer, use the operating system Shut
Down command.
2 Drive light indicator Turns on when the hard drive, CD-, or
DVD-ROM drive is accessed. 
						

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Maintenance and Service Guide1–15
3 Diskette drive light Turns on when the diskette drive in the
Media Bay or the optional external diskette
drive is accessed.
4 Num lock light On: Num lock is on and the embedded
numeric keypad is enabled.
5 Capslocklight On:Capslockison.
6 Scroll lock light On: Scroll is on.
7 Microphone Inputs single-channel sound to the
computer; can be used whether the
computer is open or closed.
8 Easy Access buttons (4) Four buttons that provide quick access to
the Internet. Refer to the
Hardware Guide
that ships with the computer for information
about these buttons.
9 Stereo speakers (2) Produce stereo sound.
10 Right TouchPad button Functions like the right mouse button on an
external mouse.
11 TouchPad Moves the mouse cursor, selects, and
activates.
12 Left TouchPad button Functions like the left mouse button on an
external mouse.
Ta b l e 1 - 5
Top Components(Continued)
Item Component Function