compaq prosignia 190 User Manual

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
Preliminaries
The following links are preliminary instructions which should be read 
before continuing with the Removal & Replacement section of this Guide. 
Please read the following pages before servicing your computer:
Electrostatic Discharge
Service Considerations
Cables & Connectors
Preparing Computer for Disassembly
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Electrostatic Discharge
A sudden discharge of static electricity from a finger or other conducto\
r can destroy 
static-sensitive devices or microcircuitry. Often the spark is neither f\
elt nor heard, but damage 
occurs. An electronic device exposed to electrostatic discharge (ESD) \
may not be affected at all 
and will work perfectly throughout a normal cycle. Although, it may func\
tion normally for a 
while, then degrade in the internal layers, reducing its life expectancy\
. 
Networks built into many integrated circuits provide some protection, bu\
t in many cases, the 
discharge contains enough power to alter device parameters or melt silic\
on junctions.
Generating Static
The table shows how different activities generate static electricity and\
 at different electrostatic 
voltage levels.
 
Typical Electrostatic Voltages
EventRelative Humidity
10%40%55%
Walking across carpet35,000 V15,000V7,500 V
Walking across vinyl floor12,000 V5,000 V3,000 V
Motions of benchworker6,000 V800 V400 V
Removing DIPS fromplastic tubes2,000 V700 V400 V
Removing DIPS from vinyl trays11,500 V4,000 V2,000 V
Removing DIPS from Styrofoam14,500 V5,000 V3,500 V
Removing bubble pack from PCBs26,000 V20,000V7,000 V
Packing PCBs infoam-lined box21,000 V11,000 V5,000 V
NOTE:   700 volts can degrade a product. 
						

							Continue Preliminary pages:
Service Considerations
Cables & Connectors
Preparing Computer for Disassembly
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
Service Considerations
Listed below are some of the considerations that you should keep in mind\
 during the 
disassembly and assembly of the computer:
Tool Requirements
To service the computer, you need the following:Torx T-8 screwdriver (with option for flathead on most screws)
l   
7mm (1/4 in.) socket nut driver (for removal of Docking connector to \
remove system 
board)l   
Screws
The screws used in the computer are not interchangeable. If an incorrect\
 screw is used during 
the reassembly process, it can damage the unit. Compaq strongly recommen\
ds that all screws 
removed during disassembly be kept with the part that was removed, then \
returned to their 
proper locations.
Plastic Parts
Using excessive force during disassembly and reassembly can damage plast\
ic parts. Use care 
when handling the plastic parts. Apply pressure only at the points desig\
nated in these 
maintenance instructions.
IMPORTANT:   As each subassembly is removed from the computer, it should be placed aw\
ay 
from the work area to prevent damage.
 
Continue Preliminary pages:
Cables & Connectors
Preparing Computer for Disassembly
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
Cables & Connectors
Most cables used throughout the unit are ribbon cables. Cables must be h\
andled with extreme care to avoid 
damage. Apply only the tension required to seat or unseat the cables dur\
ing insertion or removal from the 
connector. Handle cables by the connector whenever possible. In all case\
s, avoid bending, twisting, or tearing 
the cables and ensure that the cables are routed in such a way that they\
 cannot be caught or snagged by parts 
being removed or replaced.
Cables
Use the following precautions when handling cables to avoid damage to th\
e cable or computer:Always handle cables by their connectors.
l   
Avoid bending, twisting, or pulling on the cables.l   
Apply minimum required force when seating or unseating the cables from t\
heir connectors.l   
Place the cables in such a manner that they cannot be caught or snagged \
by parts being removed or 
replaced.l   
Handle flex cables with extreme care; they can tear easily.l   
 
CAUTION: When servicing these computers, ensure that cables are placed in the\
ir proper location during
the reassembly process. Improper cable placement can cause severe damage\
 to the unit.
 
Connector Positions on the system board:
1Right Speaker
2Keyboard connector
3Left speaker
4Pointing device
5Pointing stick connector
6TouchPad module connector
Click here for information on removing a Cable from a  ZIF Connector.
Continue with last Preliminary page: 
						

							Preparing Computer for Disassembly
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
ZIF Connector
The computer uses a zero insertion force (ZIF) to 
connect the keyboard and pointing Stick to the system 
board. To remove a cable from a ZIF connector, lift both 
corners of the ZIF connector and slide simultaneously 
with constant light force.
CAUTION: A ZIF connector and its
attached cable can be easily damaged. 
Handle only the connector slide when 
removing or replacing a cable. Never pull 
or twist on the cable while it is 
connected.When servicing this computer, 
ensure that cables are placed in their 
proper location during the reassembly 
process. Improper cable placement can 
damage the computer.
Back to  Cables and Connectors .
 
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
Preparing the computer for Disassembly
Before beginning removal and replacement procedures, complete the follow\
ing procedures:Disconnect AC power and any external devices.
l   
Remove the battery pack.l   
Remove any PC Cards.l   
Preventing Damage to Removable Drives
Removable drives are fragile components that must be handled with care. \
To prevent damage to 
the computer or a removable drive, or loss of information, observe these\
 precautions:Before removing or inserting a hard drive, shut down the computer. If yo\
u are unsure 
whether the computer is off or in Hibernation, turn the computer on, the\
n shut it down.
l   
Before removing a diskette drive, CD-ROM drive, SuperDisk LS-120 drive, \
or a DVD-ROM 
drive, ensure that a diskette or disc is not in the drive. Ensure that t\
he drive tray is closed. 
Before handling a drive, ensure that you are discharged of static electr\
icity. While handling 
a drive, avoid touching the connector.l   
Handle drives on surfaces that have at least one inch of shock-proof foa\
m.l   
Avoid dropping drives from any height onto any surface.l   
Do not use excessive force when inserting a drive into a drive bay.l   
Avoid exposing a hard drive to products that have magnetic fields such a\
s monitors or 
speakers.l   
Avoid exposing a drive to temperature extremes or to liquids.l   
If a drive must be mailed, ship it in a suitable form of protective pack\
aging. Shipping the 
drive in standard packaging may not cushion it from destructive shock, v\
ibration, 
temperature, or humidity. Place a mailing label with the wording Fragil\
e: Handle With 
Care on the mailer.l   
After the hard drive has been removed from the computer, avoid turning t\
he hard drive 
and tray upside down. The drive is not secured to the tray and can fall \
out.l   
Do not place labels on the ventilation area on the hard drive.l   
Heed the labels on the hard drive.l   
IMPORTANT: The battery pack should be removed before performing any internal mainte\
nance 
on the computer. 
						

							WARNING:  Metal objects can damage the battery pack as well as the battery\
contacts in the battery compartment. To prevent damage, do not allow met\
al objects 
to touch the battery contacts. Place only the battery pack for the Compa\
q Prosignia 
Series Portable Computers into the battery compartment. Do not force the\
 battery 
pack into the bay if insertion does not occur easily.
CAUTION:  Do not crush, puncture, or incinerate the battery pack. Do not open \
a
battery pack, as this damages the pack, makes it unusable, and exposes p\
otentially 
harmful battery components. There are no field-serviceable parts located\
 inside the 
battery pack.
NOTE: The Compaq Prosignia Series Portable Computers have several screws of va\
rious sizes 
which are 
not interchangeable. Care must be taken during reassembly to ensure that
the correct screws are used in their correct location. During removal pl\
ease keep 
respective screws with their associated subassembly.
Go to  Removal & Replacement Procedures .
  
						

							MAINTENANCE & SERVICE GUIDE
PROSIGNIA NOTEBOOK 190
INDEX PAGEPRODUCT DESCRIPTIONLEGAL NOTICEHOW TO USE THIS GUIDE
REMOVAL & REPLACEMENTILLUSTRATED PARTS CATALOGTROUBLESHOOTINGSPECIFICATIONS
Removal & Replacement
Removing the Battery Pack
>Preliminaries
>Serial
Number
Location
>Battery Pack
>DualBay
Drive
>MultiBay
Drive
>Hard Drive
>Modem
>Keyboard
>Memory
Module
>LED Cover
>RTC battery
>Display
Panel
Assembly
>Button
Board
>Top cover
>TouchPad or
Pointing Stick
Module
>System
Board
>Voltage
Converter
Board
There are five 
steps in this 
sequence. 
To remove the 
battery pack, 
complete the 
following 
steps:1 Prepare the
computer
for
disassembly .
2 Close the 
computer 
and turn it 
so the 
bottom is 
facing up.
3 Slide the 
battery 
release latch 
toward the 
back of the 
computer
.
4 Pull the 
battery pack 
out of the 
battery bay
.
END OF 
SEQUENCE 
To replace the 
battery pack, 
reverse the 
previous