compaq presario 1200xl User Manual

							4 BATTERY OPERATIONSPRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Power Management
The following power management features are available for conserving AC power and 
extending battery operating time:
Power Management Settings
 
Low-Power Modes
 
Battery Operating Life
 
Servicing the Notebook - Full Off Mode
 
Rebooting After a Lockup
 
Recovering From a Loss of Electrical Power
 
Power Management Settings
Differing patterns of Notebook use determine the level of power management needed. 
These power management levels can be initiated based on the amount of time passed 
since the last system activity. System activity examples include keyboard strokes or mouse 
movement, DVD/CD playback (while under program control that monitors Standby), and 
modem use.
Power Schemes
You may select different settings or Power Schemes through Power Management 
from the Control Panel. The default Power Schemes are Home/Office Desk, Portable/
Laptop, and Always On. The settings can be customized by changing the following 
options:
System Standby: length of inactivity before the Notebook goes into Standby mode 
Turn Off Monitor: length of inactivity before the screen times out and goes blank 
Turn Off Hard Disks: length of inactivity before the hard drive goes into low power 
mode 
Important: The setting for the Hard Disk must be less than or equal to the setting for the 
system. If the Notebook is on a network, Compaq recommends that System Standby be set 
to Never. 
						

							PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIESBATTERY OPERATIONS 5
Presario 1200XL Series
Model XL300, XL300A, and XL300B
The following table shows the default settings for each Power Scheme.
Alarms
The Notebook can be set to Alarm when the battery power level is reduced or when it 
reaches a critical low level. The Notebook can also be set automatically to enter a 
low-power mode when the battery reaches a specific power level.
Ä
CAUTION: The settings on the Alarms tab is preset for the Notebook to run at its 
best. Changing any of these settings could cause the Notebook to function 
improperly. It is recommended that these settings be left at their default values.
Power Schemes
Always onAC PowerBattery Power
System Standby 
Turn OFF Monitor 
Turn OFF Hard DisksNever
15 minutes
1 hour5 minutes 
2 minutes 
3 minutes
Portable/LaptopAC PowerBattery Power
System Standby 
Turn OFF Monitor 
Turn OFF Hard DisksNever 
3 hours 
15 minutes15 minutes 
Never 
10 minutes
Home/Office DeskAC PowerBattery Power
System Standby 
Turn OFF Monitor 
Turn OFF Hard Disks20 minutes 
15 minutes 
30 minutes1 minute 
2 minutes 
10 minutes
Alarms
AlarmDefault Alarm Action
Low Battery  10%  Notification: Text Power 
Mode: No Action 
Critical Battery0% Notification: No Action 
Power Mode: Hibernation 
						

							6 BATTERY OPERATIONSPRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
SpeedStep Technology Modes 
SpeedStep Technology features several speed options for processor response to 
low-power conditions. These include the following settings: 
Maximum Performance: always at high speed
Battery Optimized: always at low speed 
Reversed: opposite recommended 
Recommended: performance on AC, Battery Optimized on Battery
Disabled: no run time support, high speed 
SpeedStep options can be accessed in three ways: 
Access F10 Setup during startup and select the Advanced screen. 
Click Start>Settings>Control Panel>Power Options>Intel(R) 
SpeedStep
(TM) technology tab. 
Double-click the Flag icon on the Windows taskbar to open the Intel(R) 
SpeedStep
(TM) technology dialog box.  
						

							PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIESBATTERY OPERATIONS 7
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Low-Power Modes
Compaq Presario 1200 Series Notebook Computers have two levels of low-power 
management: Hibernation and Standby.
Hibernation 
Hibernation helps conserve battery life and protect data. Your Notebook automatically 
enters Hibernation mode when the battery has little power left or when the Notebook 
(operating on battery power) is in Standby mode for more than one hour. As the Notebook 
enters Hibernation, it automatically stores the contents of the Notebook memory to the 
hard drive before it shuts down. When the Notebook comes out of Hibernation, it returns to 
its former state. 
Activate Hibernation mode by pressing the Power button once. 
To restart the Notebook, press the Power button once. When the Notebook enters or 
wakes from Hibernation mode, a Progress window is displayed on the screen. 
Standby 
Standby mode is a low-power mode, also referred to as Sleep mode. Selecting Standby 
mode instead of turning off the Notebook when finished has two advantages: 1. It allows 
the Notebook to wake up faster than turning it completely off; 2. It saves more power than 
the active (On) mode. 
Activate Sleep mode by pressing Fn+F4. Or click Start, select the Shut Down option, and 
click Standby.
Ä
CAUTION: The Notebook maintains system information and open files while in 
Standby mode. However, unsaved information is lost if the Notebook is turned off 
prior to system wake-up, or if a power loss occurs while using the AC adapter. 
						

							8 BATTERY OPERATIONSPRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
The following table shows the conditions and indicators for entering and exiting the various 
power management modes, Standby, Hibernation, and Off.
Power Management Modes
StandbyActivationDeactivationIndicators
Manual Press Fn+F4 key 
combination or click 
the Start button on 
the Windows taskbar, 
then point to 
Shutdown and click 
Standby. Press any key. Flashing Power light
Time-Out Default 15 minutes if using 
battery power. 
Notebook will not 
automatically enter 
Standby mode if 
using AC Power.
Hibernate Activation Deactivation Indicators
ManualPress Power button 
once.Press Power button 
once.Power light is off, 
screen is blank
Time-Out Default  When battery is low 
or after 1 hour of 
Standby. Notebook 
will not automatically 
enter Hibernation 
mode if using AC 
Power.Press Power button 
once.Power light is off, 
screen is blank 
						

							PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIESBATTERY OPERATIONS 9
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Important: The manual shutdown mode is not recommended unless the standard 
shutdown mode does not work.
Battery Operating Life
Battery operating life is affected by variables such as: 
Power conservation settings 
Hardware configuration 
Software applications Installed options
Display brightness 
Hard drive usage 
Changes in operating temperature 
Type and number of installed PC Cards 
For more information on increasing battery-pack operating time, conditioning the battery 
pack, and disposing of a used battery pack, refer to the Battery Pack Operations
 section in 
this Maintenance and Service Guide.
Power Management Modes
OffActivationDeactivationIndicators
Standard Perform normal 
Windows shutdown 
using the Start 
button on the 
Windows taskbar.Press Power 
button once.Power light is off, 
screen is blank.
ManualPress and hold 
down the Power 
button for 4 
seconds. 
						

							10 BATTERY OPERATIONSPRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Servicing the Notebook - Full Off Mode 
The Notebook must be turned off completely when installing or replacing components in 
the system. Follow the instructions for putting the Notebook into Off mode properly, 
unplugging it from the outlet, and removing the battery (see Battery Pack Removal 
Sequence). 
Rebooting After a Lockup 
To reboot the Notebook (from a cold start) when the keyboard is frozen or the screen is 
locked, press and hold down the Power button for at least four seconds; this causes a 
manual shutdown. Then, restart your Notebook with a single press of the Power button. 
If the Notebook still does not recover, press the Power button and hold for four seconds to 
shut it down, then remove the battery or unplug the AC power for at least 30 seconds. 
Reinsert the battery or reconnect AC power and press the Power button once to reboot. 
Recovering From a Loss of Electrical Power 
Loss of electrical power causes the Notebook to turn off automatically. This may cause loss 
of data because the Microsoft Windows operating system is not able to close all files and 
programs properly. 
Loss of power may be caused by one of the following: 
Electrical power service is interrupted. 
The power cord is accidentally disconnected. 
If power surges or sags, the display and status lights may flicker, and the Notebook may 
automatically restart. If an improper shutdown occurs, ScanDisk, a Microsoft Windows 
utility program, runs automatically once power is restored. ScanDisk determines if the 
improper shutdown caused any errors on the hard disk. These errors may occur if the 
Microsoft Windows operating system is not able to close all files properly before the 
shutdown. If no errors are found, the restart process continues. If ScanDisk does detect 
errors, follow the instructions on the screen to continue the restart process. Work that was 
not saved before the loss of power or shutdown may be lost. 
If a power failure occurs, or the power cord disconnects while the Notebook is turned on, 
turn it off until normal service is restored. The next time the Notebook is turned on, 
ScanDisk may run to check the hard disk for errors caused by improper shutdown.
Servicing the Notebook - Full Off Mode 
The Notebook must be turned off completely when installing or replacing components in 
the system. Follow the instructions for putting the Notebook into Off mode properly, 
unplugging it from the outlet, and removing the battery (see Battery Pack Removal 
Sequence). 
Rebooting After a Lockup 
To reboot the Notebook (from a cold start) when the keyboard is frozen or the screen is 
locked, press and hold down the Power button for at least four seconds; this causes a 
manual shutdown. Then, restart your Notebook with a single press of the Power button. 
If the Notebook still does not recover, press the Power button and hold for four seconds to 
shut it down, then remove the battery or unplug the AC power for at least 30 seconds. 
Reinsert the battery or reconnect AC power and press the Power button once to reboot. 
Recovering From a Loss of Electrical Power 
Loss of electrical power causes the Notebook to turn off automatically. This may cause loss 
of data because the Microsoft Windows operating system is not able to close all files and 
programs properly. 
Loss of power may be caused by one of the following: 
Electrical power service is interrupted. 
The power cord is accidentally disconnected. 
If power surges or sags, the display and status lights may flicker, and the Notebook may 
automatically restart. If an improper shutdown occurs, ScanDisk, a Microsoft Windows 
utility program, runs automatically once power is restored. ScanDisk determines if the 
improper shutdown caused any errors on the hard disk. These errors may occur if the 
Microsoft Windows operating system is not able to close all files properly before the 
shutdown. If no errors are found, the restart process continues. If ScanDisk does detect 
errors, follow the instructions on the screen to continue the restart process. Work that was 
not saved before the loss of power or shutdown may be lost. 
If a power failure occurs, or the power cord disconnects while the Notebook is turned on, 
turn it off until normal service is restored. The next time the Notebook is turned on, 
ScanDisk may run to check the hard disk for errors caused by improper shutdown. 
						

							PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIESTROUBLESHOOTING 1
Presario 1200XL Series
Model XL300, XL300A, and XL300B
Troubleshooting
This section provides troubleshooting information for Compaq Presario 1200XL Series 
Portable Notebook. The basic steps in troubleshooting are:
1. Preliminary Steps
2. The Power-On Self-Test (POST)
3. The recommended actions you can take, described in the diagnostic tables later in this 
section, if you are unable to run POST, or if POST displays an error message.
When following the recommended actions for on Power-On Self-Test 
and Diagnostic Error 
Codes, perform the steps in the order listed above. Rerun POST after each recommended 
action until the problem is solved, and if no error message occurs. Once the problem is 
solved, do not continue with any remaining recommended actions. 
Note: If the problem is intermittent, check your Notebook several times to ensure that 
the problem is solved.
Preliminary Steps
Before running Power-On Self-Test (POST), complete the following steps: 
1. If a Power-on password is established, type it and press the Enter key. If you do not 
know the password, clear the password (See Clearing the Power-On Password
). 
2. Run Compaq Diagnostics
.
3. Turn off the Notebook and its external devices. 
4. Disconnect any external devices you do not want to test. Do not disconnect the printer 
if you want to test it or use it to log error messages. 
Important: If the problem only occurs when an external device is connected to the 
computer, the problem may be related to the external device or its cable. Verify this by 
running POST both with and without the external device connected.
5. Install loopback plugs in the serial and parallel connectors if you want to test these 
ports. 
6. Ensure that the hard drive is installed in the Notebook. 
						

							2 TROUBLESHOOTINGPRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIES
Presario 1200XL Series
Model XL300, XL300A, and XL300B
7. Ensure that the battery pack is inserted in the Notebook and that it is connected to an 
external AC power source. 
When these preliminary steps are completed, you are ready to run 
POST. 
Clearing the Power-On Password
Note: Clearing the Power-on password also removes all Notebook setup attributes that 
are programmed in the CMOS.
If you do not know the password, clear it by performing the following steps: 
1. Turn off the computer. 
2. Disconnect the power cord. 
1.Remove the battery pack
. 
2.Remove the keyboard
.
3.Remove the Palmrest Cover with TouchPad 
.
4.Remove the LED button bezel.
Continued on next page. 
						

							PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1200XL SERIESTROUBLESHOOTING 3
Presario 1200XL Series
Model XL300, XL300A, and XL300B
5. To clear the password, remove the RTC battery by prying it out of the socket with a 
non-metallic object. 
Ä
CAUTION: When removing the RTC battery from the system board, it is extremely 
important to use a non-metalic object to pry up the RTC battery to prevent damage 
to the system bord or the battery.
6. Allow at least 10 seconds to pass. Then replace the battery, simultaneously making 
contact with the two pads located at R37 on the system boarding, using a conductive 
piece of material such as a piece of wire or tool.
7. Reassemble the Notebook.
8. Turn on the Notebook to verify that the Power-on password has been cleared. If it has 
not been cleared, repeat Steps 1 through 8.