compaq presario 1230 1250 User Manual

							Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide \
- Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252
United States     December 6, 2002 
 
Maintenance & Service Guide
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
 | Home Page | Notice | Preface | Product Description | Troubleshooting  
Illustrated Parts Catalog | Removal & Replacement Procedures | Specifications 
Pin Assignments | Battery Pack Operations
Solving PC Card Problems
Some common causes and solutions for PC Card problems are listed in the \
following table.
Solving PC Card Problems
Problem Probable CauseSolution(s)
When turned on, the computer 
does not beep when a PC Card 
is inserted. Card is not inserted properly.
PC Card beeps are disabled.Ensure the card is inserted 
in the correct orientation.
Double-click the PC Card 
icon in the Control Panel, 
click the Global Settings 
tab, the enable PC Card 
sound effects.
  Speaker is turned off or 
volume is turned down.Press volume buttons to 
turn the speaker on, then 
increase the volume.
  PC Card drivers are not 
installed.Double click the Add New 
Hardware icon in the 
Control Panel for installation 
instructions.
If PC Card or drivers are not 
compatible with Windows, 
install drivers and use the 
PC Card in MS-DOS mode.
  Card or card driver is not 
supported.Contact your Compaq 
authorized service provider 
for a list of PC Cards tested 
successfully in Compaq PC 
Card platforms.
PC Card modem, fax, or 
network card does not work. Card is not fully inserted into 
the slot or is not inserted 
properly.Ensure the card is inserted 
in the correct orientation.
  Telephone cord is not 
plugged in all the way.Check and secure telephone 
connection.
  Necessary drivers are not 
installed (turned on).Install drivers.
PC Card modem or fax card 
does not work. You are trying to access the 
card using the wrong COM 
port.See 
Specifications to verify 
COM port.
  The card conflicts with a 
serial device.See 
Specifications to verify 
address.
  The card is not supported.Use supported cards only.
Modem network PC Card 
does not work. Network driver is not installed or is 
not set up properly. Install driver.
  Telephone cord is not properly 
connected. Verify telephone 
connection.
Memory or storage card 
does not work. SRAM and flash memory cards 
require the memory card driver to be 
loaded (turned on).
Flash memory cards require the 
Microsoft FlashFile System to 
be loaded.
Hard drives on flash mass storage 
cards require the PC Card ATA driver 
to be loaded. Install driver.
  You are trying to access the hard 
drive card using the wrong drive 
letter. Double-click My 
Computer to verify 
the drive letter 
assigned to the card.
  The card is not 
supported.Contact your 
Compaq authorized 
service provider for a 
list of PC Cards 
tested successfully in 
Compaq PC Card 
platforms.
Solving Power Problems
Also see Solving Battery and Battery Gauge Problems in this section.
 
Solving Power Problems
Problem Probable CauseSolution(s)
Computer wont turn on and 
battery pack is not inserted. Computer is not connected to 
a power source.
Power cords to the external 
power source are unplugged.Insert battery or connect 
an external power source.
Ensure that power cords 
connecting the computer 
and the external power 
source are plugged in 
properly.
  Power adapter is defective.Replace AC Adapter and 
restart.
Computer turned off while it was 
left unattended and the power icon 
is off. System board is defective.
Replace the system board.
System initiated Hibernation 
due to a critical low-battery 
condition. Replace the battery pack 
with a fully charged 
battery pack or connect 
the computer to an 
external power source. 
Then turn on the 
computer.
System initiated Hibernation 
after a preset timeout. Turn on the computer.
 
Solving Printer Problems
If you experience problems printing, run a printer self-test. Refer to t\
he documentation provided with your printer for 
instructions. If the self-test fails, it is a printer-specific problem. \
Also refer to the printing section of your application 
documentation.
Solving Printer Problems
Problem Probable CauseSolution(s)
Printer will not turn on. The signal cable may not be 
connected properly, or the 
printer is unplugged.Ensure that the signal 
cable is properly 
connected and that the 
power cord is connected to 
the electrical outlet.
Printer will not print. Printer is not turned on or is 
off line.Turn the printer on and set 
it to on line.
The device drivers for your 
application are not installed. Refer to the printer 
documentation to install 
the correct printer driver.
Printer that is set up for a 
network is not connected to 
the network. Connect the printer to the 
network.
Printer cable is too long, 
unshielded, or defective. Replace the cable.
Paper tray is empty. Fill the paper tray with 
paper and set the printer 
to online.
Printer prints garbled information. Correct printer drivers 
are not installed.Refer to the printer 
documentation to install 
the correct printer driver.
Cable is not 
connected properly. Ensure that the printer 
signal cable is properly 
connected to the 
computer.
Cable is defective. Replace the printer cable 
and retest.
 
Solving Touch Pad/Pointing Device Problems
Some common causes and solutions for Touch Pad/pointing device problems \
are listed in the 
following table.
Solving Touch Pad/Pointing Device Problems
Problem CauseSolution(s)
Touch Pad or mouse does not work. Incorrect or no device driver 
is installed.Install the device driver 
and add to the 
AUTOEXEC.BAT file or 
CONFIG.SYS file.
  The device driver is not 
installed in Windows.Install the Touch 
Pad/mouse driver in 
Windows.
External mouse does not work. Mouse is not securely 
connected or is connected to 
an incorrect external 
connector.Ensure that the mouse is 
securely connected to the 
appropriate external 
connector.
Touch Pad or mouse does not work 
even though the device is enabled 
in Windows. Mouse is not enabled.
Enter MOUSE at the 
system prompt to activate 
the mouse device driver.
   
Add a line in the 
AUTOEXEC.BAT file to 
automatically activate the 
mouse device driver each 
time computer is turned 
on or restarted.
  Cable not properly seated in 
Touch Pad board.Reseat cable.
  Defective Touch Pad board.Replace Touch Pad board.
  Defective system board.Replace system board.
  Device driver is not correctly 
installed in Windows.Install the appropriate 
device driver in Windows.
Cursor skips or moves abnormally 
when using the Touch Pad. The Touch Pad needs to be 
cleaned.Clean the Touch Pad with 
a cloth dampened with 
alcohol or an ammonia-
based glass cleaner. Wipe 
up liquid with a dry cloth.
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Battery Pack Operating Time
This appendix covers the following information concerning battery pack o\
perating time:
l     Increase battery pack operating time
l     Conditioning a battery pack
l     Disposal of a used battery pack
Increasing Battery Pack Operating Time
Battery pack operating time differs depending on several variables. To a\
void unnecessary 
replacement, consider the following variables when determining how long \
a charged battery pack 
should last:
l     Power management settings
l     Hardware configuration
l     Software applications
l     Installed options
l     Display brightness
l     Hard drive usage
l     Changes in operating temperature
l     Type and number of installed PC Cards
NOTE:The power consumption requirements for PC Cards vary widely. Some cards \
drain 
the battery pack very rapidly.
Battery pack operating time can be increased by as much as 50 percent by\
 controlling the energy 
required by the computer and the energy stored in the battery pack.
Minimizing the Energy Required
To minimize the energy required by the computer, follow these steps:
l     Set the power conservation levels in the Power Management utility to Maximum.
l     Customize the timeout value to work more efficiently with the applicatio\
ns. The 
amount of battery life depends on the values selected.
 
Maximizing the Energy Stored
To maximize the energy stored in the battery pack, follow these guidelin\
es:
l     Condition the battery pack at least every 30 days to improve overall bat\
tery 
performance.
l     Keep a battery pack in the computer when using it with AC power to suppl\
y the 
battery pack with a constant trickle charge.
l     Store the battery pack in a cool, dry place when not in use.
 
Conditioning a Battery Pack
CAUTION:  To avoid a loss of data, ensure that all data is saved before discharg\
ing a 
battery pack.
 To condition a battery pack, complete the following steps: 1. Plug in the AC adapter and allow the battery to charge until the LED \
light on the 
display stops blinking. Your battery gauge may read 100 percent for a pe\
riod of time 
before LED light on the display stops blinking. Do not unplug the AC ada\
pter until the 
arrow disappears.
2. Unplug the AC adapter and allow the battery to drain until the comput\
er reaches 
hibernation and turns itself off. Do not plug in the AC adapter during this process 
or you will need to restart with Step No. 1. You may use the computer while the 
battery is draining.
3. Your battery is re- conditioned.
4. Plug in the AC adapter and begin using the computer. 
The table below shows the approximate battery pack charge times.
 
Approximate Battery Charge Time
Computer On Line Off Line
NiMH Battery Pack 4.0 hours premature termination 2:00 hrs
Li ion Battery Pack  4.5 hours premature termination 2:50 hrs
Disposal of a Used Battery Pack
In the interest of safeguarding our environment. Compaq Computer Corpora\
tion recommends that 
nickel metal hydride (NiMH) and lithium ion (Li ion) battery packs b\
e recycled. Battery packs 
should be handled in accordance with country, state, province, or local \
regulations.
CAUTION:  Never attempt to open or service a battery pack. Opening a battery pac\
k 
not only damages the pack and makes it unusable, but also expose potenti\
ally harmful 
battery components.
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Connector Pin Assignments
This appendix provides connector pin assignment tables for Compaq Presar\
io 
1200 Series Portable Computers. For more information on connectors, refe\
r to 
the section on 
Rear Connectors.
NOTE:  The signals in all tables of this appendix are considered active high \
unless otherwise indicated by an asterisk (*).
 
Parallel Connector
PinSignal PinSignal
1 Strobe* 10Acknowledge*
2 Data Bit 0 11Busy
3 Data Bit 1 12Paper Out
4 Data Bit 2 13Select
5 Data Bit 3 14Auto Linefeed*
6 Data Bit 4 15Error*
7 Data Bit 5 16Initialize Printer*
8 Data Bit 6 17Select In*
9 Data Bit 7 18-25Signal Ground
* = Active low
  Serial Connector
Connector PinSignal
1
2
3
4
5
6
7
8
9Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Ready to Send
Clear to Send
Ring Indicator
Keyboard/Mouse 
Connector PinSignal
1
2
3
4
5
6Data 1
Data 2
Ground
+5 V
Clock 1
Clock 2
  External VGA Monitor
Connector PinSignal
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15Red Analog
Green Analog
Blue Analog
Not connected
Ground
Ground Analog
Ground Analog
Ground Analog
Not connected
Ground
Monitor Detect
DDC2B Data
Horizontal Sync
Vertical Sync
DDC2B Clock
  Universal Serial Bus
Connector PinSignal
1
2
3
4+5V
Data -
Data +
Ground
  Modem 
Connector PinSignal
1
2
3
4
5
6Unused
Unused
Tip
Ring
Unused
Unused
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Illustrated Parts Catalog
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and SoftwareThis section provides an  breakdown and identifies the spare 
parts ordering number associated with each item(s) for the 
Compaq Presario 1200 Series Portable Computers.
 
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
System Unit 
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and Software
Keyboard 
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Boards
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and Software
                               
                                                                        \
                        
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Display  
Assembly
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and Software
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Mass Storage Devices
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and Software
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
Miscellaneous Cables Kit 
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and Software
Spare Part Number: 330946-001
 
 
 
 
 
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							Compaq Presario Series Maintenance and Service Guide 
United States     December 6, 2002
Presario 1200 Series
Models: 1234, 1235, 1236, 1237, 1238, 1240, 1242, 1250, and 1252 
Before You BeginSpecificationsParts Catalog
Removal SequenceTroubleshootingBattery Operations
Product DescriptionPin AssignmentsIndex
 
Cables
System Unit
Boards
Display 
Assembly
Mass Storage 
Devices
Miscellaneous 
Cable Kit
Cables
Miscellaneous 
Hardware and 
Plastics Kit
Miscellaneous 
Parts
Documentation 
and SoftwareDescription
Spare Part Number
Power Cord
 
 
Description Spare Part Number
Modem 
 
 
 
 
 
 
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