HP ze4200 - Manual (Page 83)

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