HP Pavilion xt500 HP Pavilion & Compaq Presario Notebook PC - Service Manu - Page 83

Symptom, Call Center, Suggestions, Repair Center, Likely Causes, Comments, Display, Hard disk

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

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