compaq 800 notebook series User Manual

							1–16Maintenance and Service Guide
Product Description
The notebook rear panel and left side components are shown in 
Figure 1-3 and described in Table 1-5.
Figure 1-3. Rear Panel and Left Side Components
Table 1-5
Rear Panel and Left Side Components
Item Component Function
1 Infrared port Provides wireless communication between 
the notebook and other infrared-equipped 
devices using an infrared beam.
2 Parallel connector Connects a parallel device.
3 External monitor 
connectorConnects an external monitor or overhead 
projector.
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							Product Description
Maintenance and Service Guide1–17
4 Network connection
lights (2)Both lights off: The notebook is not 
connected to a LAN.
Both lights on: The notebook is connected 
to a LAN with a 100 MB/s link.
Green light on and yellow light off: The 
notebook is connected to a LAN with a 
10 MB/s link.
Green light flashing: Information is 
transmitting through the LAN.
5 RJ-45 network jack Connects the network cable. A network 
cable is not included with the notebook.
6 USB ports (4) Connect USB devices.
7 Composite TV 
connectorConnects a television, VCR, camcorder, or 
overhead projector.
8 RJ-11 modem jack Connects the modem cable to an internal 
modem. A modem cable is included with 
internal modem models.
9 DC power connector Connects any one of the following:
■AC adapter
■Optional automobile power 
adapter/charger
■Optional aircraft power adapter
10 Security cable slot Attaches an optional security cable to the 
notebook.
11 Hard drive bay Supports the removable primary hard drive. 
The hard drive is secured to the notebook 
by four screws.
12 1394 connector Connects IEEE 1394-compliant products, 
such as digital camcorders, video editing 
equipment, VCRs, cameras, and audio 
players. A 1394 firewire cable is required for 
use with this connector.
Table 1-5
Rear Panel and Left Side Components (Continued)
Item Component Function
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							1–18Maintenance and Service Guide
Product Description
The notebook keyboard components are shown in Figure 1-4 and 
described in Table 1-6.
Figure 1-4. Keyboard Components
Table 1-6
Keyboard Components
Item Component Function
1
F1 through F12 
function keysPerform preset functions.
2
Num lock key On: Num lock is on and the embedded 
numeric keypad is enabled.
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							Product Description
Maintenance and Service Guide1–19
3Fn key Used with hotkeys to perform preset hotkey 
functions.
4 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.
5 Windows logo keys Display the Windows Start menu.
6 Embedded numeric 
keypadConverts keys to numeric keypad.
7 Cursor control keys Move the cursor around the screen.
Table 1-6
Keyboard Components (Continued)
Item Component Function
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							1–20Maintenance and Service Guide
Product Description
The notebook top components are shown in Figure 1-5 and 
described in Table 1-7.
Figure 1-5. Top Components
Table 1-7
Top Components
Item Component Function
1 Power button Turns on the notebook. Use the operating 
system Shut Down command to turn off the 
notebook.
2 Wireless LAN 
activity lightOff: The internal wireless LAN is off or not 
installed.
On: The internal wireless LAN is on and 
connected to a network.
Flashing: The internal wireless LAN is on, 
but is not connected to a network or 
properly configured.
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							Product Description
Maintenance and Service Guide1–21
3 Power light On: Power is turned on.
Blinking: Notebook is in Standby. The power 
light also blinks if a battery pack that is the 
only available power source reaches a 
low-battery condition.
4 Drive indicator light Turns on when the hard drive, CD-, or 
DVD-ROM drive is accessed.
5 Num lock light On: 
Num lock is on and the embedded 
numeric keypad is enabled.
6 Caps lock light On: 
Caps lock is on.
7 Display lid switch Turns off the notebook display if the 
notebook is closed while on.
8 Stereo speakers Produce stereo sound.
9 TouchPad Moves the mouse cursor, selects, and 
activates.
10 TouchPad buttons Function like the left and right mouse 
buttons on an external mouse.
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 Power/Standby light On: Power is turned on.
Off: Power is turned off.
Blinking: Notebook is in Standby.
Table 1-7
Top Components (Continued)
Item Component Function
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							1–22Maintenance and Service Guide
Product Description
The external components on the bottom of the notebook are 
shown in Figure 1-6 and described in Table 1-8.
Figure 1-6. Bottom Components 
Table 1-8
Bottom Components
Item Component Function
1 Vent Allows airflow to cool internal 
components.
ÄCAUTION: To prevent damage, the notebook shuts down if 
an overheating condition occurs. Do not block the cooling 
vent. Avoid placing the notebook on a blanket, rug, or other 
flexible surface that may cover the vent area.
2 Hard drive bay Supports the primary hard drive. 
The hard drive is secured to the 
notebook by four screws.
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							Product Description
Maintenance and Service Guide1–23
3 Battery pack lock latches Secure the battery pack and 
battery compartment space saver 
in the battery compartment.
4 Battery bay Accepts an 8-cell Li ion battery 
pack or battery compartment 
space saver.
5 Battery pack release switch Releases the battery pack from 
the battery compartment.
6 Memory expansion 
compartmentCovers the memory expansion 
compartment that contains two 
memory expansion slots for 
memory expansion boards.
7 Optical drive bay Accepts a CD-ROM, CD-RW, 
DVD-ROM, or DVD/CD-RW drive.
Table 1-8
Bottom Components (Continued)
Item Component Function
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							1–24Maintenance and Service Guide
Product Description
1.6 Design Overview
This section presents a design overview of key parts and features 
of the notebook. 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 and TouchPad
■Audio
■Intel Pentium 4 and Celeron processors
■Fan
■PC Card
■Modem or modem/NIC
The notebook 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 notebook.
Ä
CAUTION: To properly ventilate the notebook, allow at least a 
7.6-cm (3-inch) clearance around all sides of the notebook.
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							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 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.
2.1 Computer Setup and Diagnostics 
Utilities
Selecting Computer Setup or Compaq 
Diagnostics
The notebook features two Compaq system management utilities:
■Computer Setup—A system information and customization 
utility that can be used even when your operating system is 
not working or will not load. This utility includes settings that 
are not available in Windows.
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