Compaq evo n150 Service Manual
b
Maintenance and Service Guide
Compaq Notebook Evo N150 Series
Document Part Number: 238849-001
June 2001
This guide is a troubleshooting reference used for maintaining
and servicing the notebook. It provides comprehensive
information on identifying computer features, components, and
spare parts, troubleshooting computer problems, and performing
computer disassembly procedures.
© 2001 Compaq Computer Corporation
Compaq, the Compaq logo, Armada, and Deskpro Registered in U. S. Patent and
Trademark Office. Evo is a trademark of Compaq Information Technologies
Group, L.P. in the U.S. and other countries.
Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft
Corporation in the United States and other countries.
Intel, Pentium, and Celeron are trademarks of Intel Corporation in the
United States and other countries.
All other product names mentioned herein may be trademarks of their respective
companies.
Compaq shall not be liable for technical or editorial errors or omissions
contained herein. The information in this document is provided “as is” without
warranty of any kind and is subject to change without notice. The warranties for
Compaq products are set forth in the express limited warranty statements
accompanying such products. Nothing herein should be construed as
constituting an additional warranty.
Maintenance and Service Guide
First Edition (June 2001)
Document Part Number: 238849-001
Contents
1 Product Description
1.1ModelsandFeatures ......................... 1–1
Models.................................... 1–2
Features................................... 1–5
1.2ClearingaPassword.......................... 1–6
1.3PowerManagement.......................... 1–7
1.3ExternalComputerComponents ................ 1–8
1.4DesignOverview........................... 1–18
2 Troubleshooting
UsingthePhoenixBIOSSetupUtility............... 2–2
Troubleshooting Flowcharts....................... 2–3
2.1 Initial Troubleshooting . ................... 2–4
2.2NoPower,Part1......................... 2–5
2.3NoPower,Part2......................... 2–6
2.4NoPower,Part3......................... 2–7
2.5NoPower,Part4......................... 2–8
2.6NoVideo,Part1 ......................... 2–9
2.7NoVideo,Part2 ........................ 2–10
2.8 Non Functioning Docking Station
(ifapplicable).............................. 2–11
2.9NoOperatingSystem(OS)Loading......... 2–12
2.10NoOSLoadingfromHardDrive,Part1..... 2–13
2.11NoOSLoadingfromHardDrive,Part2..... 2–14
2.12NoOSLoadingfromHardDrive,Part3..... 2–15
2.13NoOSLoadingfromDisketteDrive........ 2–16
2.14 No OS Loading from CD- or
DVD-ROMDrive .......................... 2–17
Maintenance and Service Guide iii
2.15NoAudio,Part1....................... 2–18
2.16NoAudio,Part2....................... 2–19
2.17NonFunctioningDevice................. 2–20
2.18NonFunctioningKeyboard............... 2–21
2.19NonFunctioningPointingDevice.......... 2–22
2.20NetworkorModemConnection ........... 2–23
3 Illustrated Parts Catalog
3.1SerialNumberLocation....................... 3–1
3.2 Computer System Major Components. ........... 3–2
3.3 Miscellaneous Plastics Kit Components .......... 3–8
3.4 Miscellaneous Hardware Kit Components......... 3–9
3.5 Cable Kit Components ....................... 3–10
3.6MassStorageDevices ....................... 3–11
3.7Miscellaneous.............................. 3–12
4 Removal and Replacement Preliminaries
4.1ToolsRequired.............................. 4–1
4.2ServiceConsiderations........................ 4–1
PlasticParts................................ 4–2
CablesandConnectors ....................... 4–2
4.3PreventingDamagetoRemovableDrives......... 4–2
4.4PreventingElectrostaticDamage................ 4–4
4.5PackagingandTransportingPrecautions.......... 4–4
4.6WorkstationPrecautions ...................... 4–5
4.7 Grounding Equipment and Methods . . ........... 4–6
5 Removal and Replacement Procedures
5.1SerialNumber .............................. 5–2
5.2DisassemblySequenceChart................... 5–3
5.3PreparingtheComputerforDisassembly ......... 5–4
5.4ComputerFeet.............................. 5–4
5.5HingeCovers............................... 5–5
5.6Keyboard .................................. 5–6
5.7Display.................................... 5–8
iv Maintenance and Service Guide
5.8EMIShield................................ 5–10
5.9TopCover................................. 5–11
5.10TouchPad................................ 5–15
5.11Speakers................................. 5–18
5.12Microphone .............................. 5–21
5.13DisplayLidSwitchBoard................... 5–23
5.14HeatSink................................ 5–24
5.15InfraredBoard ............................ 5–26
5.16SystemBoard............................. 5–28
5.17PCCardAssembly......................... 5–33
5.18MiniPCIBoard ........................... 5–35
5.19DiskCellRTCBattery...................... 5–37
6 Specifications
A Connector Pin Assignments
B Power Cord Set Requirements
3-ConductorPowerCordSet......................B–1
GeneralRequirements........................B–1
Country-Specific Requirements. ...................B–2
Notes.....................................B–2
C Screw Listing
Index
Maintenance and Service Guide v
Product Description
1.1 Models and Features
The Compaq Notebook Evo N150 Series offer advanced
modularity, Intel Pentium III and Intel Celeron processors with
64-bit architecture, industry-leading Accelerated Graphics Port
(AGP) implementation, and extensive multimedia support.
1
Figure 1-1. Compaq Notebook Evo N150
Maintenance and Service Guide 1–1
Product Description
Models
Computer models are shown in Table1-1.
Table 1-1
Compaq Notebook Evo N150
Models and Model Naming Conventions
Key
N15 P 800 T4X 15 V C 64 8L ME XXXXXX-XXX
123 45678910 11
Key Description Options
1 Brand / Series
designator
2 Processor type P=Intel Pentium III C=Intel Celeron
3 Processor speed 800=800 MHz 700=700MHz
N=Notebook 15=150
4Displaytype/
size / resolution
5 Hard drive size 15=15.0 GB 10=10.0 GB
6 Optical drive
designator
7 Integrated
communication
8RAM 64=64MB
9 Battery cells / type 8L=8 cells, Lithium
10 Operating system ME=Windows Millennium Edition
11 SKU# All computer models use 470013-XXX as the
All computer models use configuration code JQKZ.
1–2 Maintenance and Service Guide
T=TFT
4=14.x-inch
V=8X Max
DVD -RO M drive
M=modem
0=none
ion (Li ion)
base SKU#.
X=XGA (1024 × 768)
D=24X Max
CD-ROM drive
W=CD-RW
C=modem/NIC
combination card
9H=9 cells, Nickel
Metal-Hydride
(NMH)
Product Description
Table 1-1
Compaq Notebook Evo N150
Models and Model Naming Conventions
123 45678910 11
N15 P 800 T4X 15 V C 64 8L ME 470013-XXX
Belgium 470013-663 Norway 470013-668
Czech Republic 470013-735 Portugal 470013-748
Denmark 470013-664 Russia 470013-749
France 470013-737 Saudi Arabia 470013-734
French Canada 470013-662 Slovakia /
Slovenia
Germany 470013-739 Spain 470013-751
Greece / Poland 470013-665 Sweden /
Finland
Hungary 470013-741 Switzerland 470013-671
(Continued)
470013-669
470013-670
470013-672
Israel 470013-743 Turkey 470013-753
Italy 470013-745 United Kingdom 470013-754
Korea 470013-674 United States 470013-661
470013-726
The Netherlands 470013-747
N15 P 800 T4X 15 V 0 64 8L ME 470013-XXX
Europe 470013-728
N15 P 800 T4X 10 V C 64 8L ME 470013-XXX
Australia 470013-673
470013-727
Japan 470013-691
470013-693
Taiwan 470013-675
Maintenance and Service Guide 1–3
Product Description
Table 1-1
Compaq Notebook Evo N150
Models and Model Naming Conventions
123 45678910 11
N15 C 700 T4X 15 D C 64 8L ME 470013-XXX
Taiwan 470013-659
N15 C 700 T4X 10 D C 64 8L ME 470013-XXX
Asia / Pacific 470013-658 The Netherlands 470013-713
Australia 470013-731 Norway 470013-621
Belgium 470013-619 Portugal 470013-714
Czech Republic 470013-701 Russia 470013-718
(Continued)
Denmark 470013-620 Slovakia /
Slovenia
France 470013-702 Spain 470013-719
Germany 470013-703 Sweden /
Finland
Hungary 470013-705 Switzerland 470013-624
Israel 470013-709 Turkey 470013-722
Italy 470013-712 United Kingdom 470013-723
Japan 470013-684
470013-685
N15 C 700 T4X 10 W C 64 8L ME 470013-XXX
Japan 470013-687 Taiwan 470013-688
N15 C 700 T4X 10 D C 64 9H ME 470013-XXX
French Canada 470013-618 Saudi Arabia 470013-700
N15 C 700 T4X 10 D 0 64 9H ME 470013-XXX
European 470013-724
United States 470013-617
470013-622
470013-623
470013-625
470013-660
470013-730
1–4 Maintenance and Service Guide
Features
Product Description
Processors, varying by computer model:
800-MHz Intel Pentium III Processor with 256-KB
integrated cache
700-MHz Intel Celeron Processor with 128-KB
integrated cache
64-MB high-performance Synchronous DRAM (SDRAM),
expandable to 512 MB
Integrated Trident CyberBlade i1 with AGP 2X support
14.1-inch, XVGA, TFT (1024 × 768) display, with over 16.8
million colors
15- or 10-GB high-capacity hard drive
Full-size TouchPad keyboard
Mini PCI 56K V.90 modem or optional Mini PCI V.90
modem plus 10/100 NIC combination card
Support for two Type II PC Card slots with support for both
32-bit CardBus and 16-bit PC Cards
Microsoft Windows Me, Windows 98, or Windows 2000
preinstalled
External AC adapter with power cord
8-cell Lithium ion (Li ion) battery pack
Maintenance and Service Guide 1–5
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.
1–6 Maintenance and Service Guide
4. Replace the RTC battery and reassemble the computer.
5. Connect AC power to the computer. Do not reinsert 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
Product Description
Power button
Advanced Configuration and Power Management (ACP)
compliant
Maintenance and Service Guide 1–7
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
Table 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.
CAUTION: To prevent damage, the
Ä
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.
1–8 Maintenance and Service Guide
Product Description
Table 1-2
Front and Left Side Panel Components
Item Component Function
3 Air intake vent Cools internal components.
4 RJ-11 jack (internal
modem models only)
5 USB connector Connects USB devices.
6 PC Card slots (2) Support a 32-bit (CardBus) or 16-bit
7 PC Card eject buttons Eject a PC Card from a PC Card slot.
8Stereoline-out/
headphone jack
9 Stereo line-in jack Connects a CD player, tuner, or tape deck.
10 Power light On: Power is turned on.
11 Battery light On: A battery pack is charging.
Connects the modem cable to an internal
modem. A modem cable is included with
internal modem models.
PC Card.
Connects stereo speakers, headphones,
headset, or television audio.
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.
Blinking: A battery pack that is the only
available power source has reached a
low-battery condition.
(Continued)
12 Hard drive Supports the removable primary hard drive.
Two screws secure the hard drive to the
computer.
Maintenance and Service Guide 1–9
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
Table 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.
1–10 Maintenance and Service Guide
Table 1-3
Right Side and Rear Panel Components
Item Component Function
3 Parallel connector Connects a parallel device.
4 Serial connector Connects a serial device.
(Continued)
Product Description
5 Keyboard/mouse
connector
6RJ-45jack(network
models only)
7 USB connectors Connect USB devices.
8 External monitor
connector
9 DC power jack Connects any one of the following items:
Connects 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.
Connects the network cable. A network
cable is not included with the computer.
Connects an external monitor or overhead
projector.
AC Adapter
Optional Automobile Power
Adapter/Charger
Optional Aircraft Power Adapter
Maintenance and Service Guide 1–11
Product Description
The keyboard components are shown in Figure 1-4 and described
in Table 1-4.
Figure 1-4. Keyboard Components
1–12 Maintenance and Service Guide
Table 1-4
Keyboard Components
Item Component Function
Product Description
1 F1 through F12
function keys
2 Embedded numeric
keypad
3 Cursor control keys Move the cursor around the screen.
4 Windows application
key
5 Windows logo key Displays the Windows Start menu.
6
7 Caps lock key Turns on the caps lock function.
Fn key Used with hotkeys to perform preset hotkey
Perform preset functions.
Converts keys to numeric keypad.
DisplaysamenuwhenusingaMicrosoft
application. The menu is the same that is
displayed by pressing the right mouse
button.
functions.
Maintenance and Service Guide 1–13
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
Table 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.
1–14 Maintenance and Service Guide
Product Description
Table 1-5
Top Components
Item Component Function
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
that ships with the computer for information
about these buttons.
9 Stereo speakers (2) Produce stereo sound.
(Continued)
Hardware Guide
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.
Maintenance and Service Guide 1–15
Product Description
The external components on the bottom of the computer are
shown in Figure 1-6 and described in Table 1-6.
Figure 1-6. Bottom Components
Table 1-6
Bottom Components
Component Function
1 Media Bay release latch Releases the Media Bay device
from the connector.
2 Serial number Identifies the computer; needed
when you call Compaq customer
support.
1–16 Maintenance and Service Guide
Product Description
Table 1-6
Bottom Components
Component Function
3 Reset button Manually resets the system if a
4 Fan Provides airflow to cool internal
5 Memory expansion
compartment cover
(Continued)
failure occurs.
WARNING: Resetting the
Å
computer will cause
unsaved information to be
lost. Before performing a
reset, close all
applications and shut
down Windows, if
possible.
components.
Covers the memory expansion
compartment that contains two
memory expansion slots for
memory expansion boards.
6 Hard drive Removable primary hard drive.
Two screws secure the hard drive
to the computer.
7 Battery security latch Secures the battery pack in the
battery compartment.
8 Battery release latch Releases the battery pack from
the battery compartment.
9 Battery compartment Holds the primary battery pack.
10 Media Bay Accepts a diskette drive, CD- or
DVD-ROMdrive,orsecondary
battery pack.
Maintenance and Service Guide 1–17
Product Description
1.4 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 or Celeron 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 right side of the computer.
CAUTION: To properly ventilate the computer, allow at least a 3-inch
Ä
(7.6-cm) clearance on the left and right sides of the computer.
1–18 Maintenance and Service Guide
Troubleshooting
WARNING: Only authorized technicians trained by Compaq should
Å
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. Power Management information is
contained in Chapter 1.
2
Security—Allows you to set or remove your power-on
password.
Maintenance and Service Guide 2–1
Troubleshooting
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
during system startup. When the main screen displays, use the
keyboard and arrow keys to move around the menus and make
selections.
F10
2–2 Maintenance and Service Guide
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 Non functioning docking station
2.9 No operating system (OS) loading
2.10 No OS loading from hard drive, part 1
Troubleshooting
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 Non functioning device
2.18 Non functioning keyboard
2.19 Non functioning pointing device
2.20 No network or modem connection
Maintenance and Service Guide 2–3
Troubleshooting
2.1 Initial Troubleshooting
Begin
Troubleshooting
N
Is there
power?
Y
N
Beeps,
LEDs, or error
Messages?
Y
N
Is there video?
(no boot)
Y
N
Is the OS
loading?
Y
N
Is there
sound?
Y
Go to
Section 2.2,
No Power
Check
LED board,
speaker
connections.
Go to
Section 2.6,
No Video
Go to
Section 2.9,
No OS Loading
Go to
Section 2.15,
No Audio
Y
Y
Connecting
or modem?
Y
All drives
working?
Keyboard/
pointing
device
working?
to network
End
N
Non Functioning
N
Non Functioning
Non Functioning
Pointing Device.
N
Go to
Section 2.17,
Device
Go to
Section 2.18,
Keyboard,
or Section 2.19,
Go to
Section 2.20,
No Network
or Modem
Connection.
2–4 Maintenance and Service Guide
2.2 No Power, Part 1
No Power
(Power LED is off)
Remove from
docking station
if applicable.
Troubleshooting
N
Power up
on battery
power?
*Reset
power.
Y
N
Power up
on AC
power?
*Reset
power.
Y
Y
Power up
in docking
station?
Done
N
1. Reseat power cables in docking station
and at the AC outlet.
2. Ensure AC power source is active.
3. Ensure power strip is working.
YN
Done
Power up
in docking
station?
N
Power up
on battery
power?
Go to
Section 2.3,
No Power, Part 2
Y
N
Power up
on AC
power?
Go to
Section 2.4,
No Power, Part 3
Y
*Notes:
1. On some models, there is a separate
reset button.
2. On some models, the computer may
be reset using the Standby switch
andeitherthelidswitchorthemain
power switch.
Go to
Section 2.8,
Non Functioning
Docking Station
Maintenance and Service Guide 2–5
Troubleshooting
2.3 No Power, Part 2
Continued from
Section 2.2,
No Power, Part 1
Visually check for
debris in battery
socket and clean
if necessary
Y
Power on?
N
Check battery by
recharging,
moving to another
computer, or
replacing it.
Power on?
Y
Done
Done
N
Replace power
supply, (if
applicable)
N
Go to
Power on?
Section 2.4,
No Power, Part 3
Y
Done
2–6 Maintenance and Service Guide
2.4 No Power, Part 3
Continued from
Section 2.3,
No Power, Part 2
Plug directly
into AC outlet.
Y
Troubleshooting
Power LED
on?
N
Reseat AC adapter
in computer and
at power source.
Power on?
N
Power outlet
active?
Y
Replace
power cord.
Power on?
Done
Y
Done
N
Try d iffe re nt
outlet.
Internal or
external AC
adapter?
Internal
Go to
Section 2.5,
No Power, Part 4
Y
Done Done
External
Replace external
AC adapter.
N
Power on?
Y
N
Maintenance and Service Guide 2–7
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