Compaq Evo n1050v Service Manual - Page 143

Troubleshooting and Diagnostics, Service Manual, Symptom, Call Center, Suggestions, Repair Center - laptop

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Symptom Notebook has short operating time when on battery. Turns off immediately after turning on. Does not run on battery; empty battery indication. Beeps repeatedly. Battery does not charge. Call Center: Suggestions Turn down display brightness. Check timeout settings in Power in Control Panel. Check power management settings in BIOS Setup. Try default settings. Battery gauge might need calibration. Run HP Battery Optimizer from Start menu. Certain applications can cause excess CPU and power usage. (User can get Intel Power Monitor from www.intel.com and monitor CPU load.) When playing DVD movies on battery power, use Power Options in Control Panel to select Portable/Laptop power scheme. When using applications with automatic save feature (such as MS Word), extend save time or disable to reduce hard disk access and power usage. PCMCIA card use can affect battery life. Some PCMCIA cards draw power even while not in use. Heavy modem use can affect battery operating time. Battery may be extremely low. Plug in AC adapter or insert charged battery Check battery and contacts. Try another battery if available. Notebook beeps repeatedly when battery is low. Connect AC adapter or replace battery. Make sure AC adapter has correct power rating. Make sure AC adapter is connected properly and battery installed properly. Check battery contacts. If available, try another battery and AC adapter. Move notebook away from any nearby heat source. Unplug AC adapter and allow battery to cool. Check for blocked air vents. Repair Center: Likely Causes Battery. Motherboard. Battery. Battery or contacts. Motherboard. Battery. Battery or contacts. AC adapter. Motherboard. Heat sink. Repair Center: Comments Battery capacity often decreases after a year or more. Check battery and AC adapter. Check heat sink. 3-8 Troubleshooting and Diagnostics Service Manual

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Symptom
Call Center:
Suggestions
Repair Center:
Likely Causes
Repair Center:
Comments
Notebook has short
operating time when
on battery.
Turn down display
brightness.
Check timeout settings in
Power in Control Panel.
Check power management
settings in BIOS Setup. Try
default settings.
Battery gauge might need
calibration. Run HP Battery
Optimizer from Start menu.
Certain applications can
cause excess CPU and
power usage. (User can get
Intel Power Monitor from
www.intel.com and monitor
CPU load.)
When playing DVD movies
on battery power, use Power
Options in Control Panel to
select Portable/Laptop power
scheme.
When using applications with
automatic save feature (such
as MS Word), extend save
time or disable to reduce hard
disk access and power
usage.
PCMCIA card use can affect
battery life. Some PCMCIA
cards draw power even while
not in use.
Heavy modem use can affect
battery operating time.
Battery.
Motherboard.
Battery capacity often
decreases after a year
or more.
Turns off immediately
after turning on.
Battery may be extremely
low. Plug in AC adapter or
insert charged battery
Battery.
Does not run on
battery; empty battery
indication.
Check battery and contacts.
Try another battery if
available.
Battery or contacts.
Motherboard.
Beeps repeatedly.
Notebook beeps repeatedly
when battery is low. Connect
AC adapter or replace
battery.
Battery.
Battery does not
charge.
Make sure AC adapter has
correct power rating.
Make sure AC adapter is
connected properly and
battery installed properly.
Check battery contacts. If
available, try another battery
and AC adapter.
Move notebook away from
any nearby heat source.
Unplug AC adapter and allow
battery to cool. Check for
blocked air vents.
Battery or contacts.
AC adapter.
Motherboard.
Heat sink.
Check battery and AC
adapter.
Check heat sink.
3-8
Troubleshooting and Diagnostics
Service Manual