HP NX9010 Service Manual page 145

Call Center:
Symptom Suggestions
Display
Dark display, no light. Make sure notebook is turned
on and warmed up.
Check power supply.
Make sure SDRAM modules
are installed properly.
Adjust display brightness.
Press Fn+F5 several times.
Try external monitor.
White display. Adjust display brightness.
Erratic display.
Bright or missing See quality statement on
pixels or lines. page 5-2.
Punctured display.
Vertical crack near
center of display.
Scratched display
glass.
Local area of dark or
light discoloration
visible when display
is on.
External display does Check connections.
not work.
Press Fn+F5 several times.
Try display on another
computer.
Hard disk
Hard disk never spins. Check power source.
Remove and reinstall hard
drive. Check connector.
Hard disk makes Back up disk immediately.
clunking or scratching
Was notebook or drive
noise.
dropped?
Hard disk makes Back up disk immediately.
buzzing or whining
Check hard disk installation.
noise.
Check for alternate noise
sources, such as PCMCIA
drive or fan.
3-10 Troubleshooting and Diagnostics
Repair Center: Repair Center:
Likely Causes Comments
Display cable Check cable connections.
connection.
Replace SDRAM modules.
SDRAM modules.
Make sure CPU module is
CPU module. installed properly, replace
CPU module.
Display assembly.
Check display cable
Motherboard.
connections, replace display
assembly.
If external monitor displays
no image, replace
motherboard.
Display assembly.
Switchboard PCA.
Display cable Check display cable
connection. connection.
Switchboard PCA.
Display assembly.
Motherboard.
Display cable Check display cable
connection. connection.
Display assembly. See quality statement on
page 5-2.
Declared to be caused by
customer abuse.
Usually caused by Declared to be caused by
closing display with customer abuse.
pencil-sized object on
keyboard.
Declared to be caused by
customer abuse.
Caused by excessive Declared to be caused by
pressure applied to customer abuse.
area on screen.
External display.
Motherboard.
Hard drive or If drive case is damaged,
connector. drive may not operate
properly.
Motherboard.
Hard drive. Check notebook and drive for
evidence of customer abuse.
Depends on noise
source.
Service Manual