Using The Web; Preparing To Call Technical Support - HP LD4201 User Manual

Problem
Black spots
appear on the
screen.
The power is
suddenly turned
off.

Using the Web

For online access to technical support information, self-solve tools, online assistance, community forums
of IT experts, broad mutli-vendor knowledge base, monitoring and diagnostic tools, go to
www.hp.com/support

Preparing to call technical support

If you cannot solve a problem using the troubleshooting tips in this section, you might need to call
technical support. Contact your regional HP authorized service provider. Have the following
information available when you call:
Display model number
●
Serial number for the display
●
Purchase date on invoice
●
Conditions under which the problem occurred
●
Error messages received
●
Hardware configuration
●
Hardware and software you are using
●
48 Appendix A Troubleshooting
Possible Solution
cause
Black spots are Several pixels (red, green, white, or black color) might appear on the screen, which can
characteristics be attributable to the unique characteristics of the LCD panel. It is not a malfunction of
of the LCD the LCD.
panel.
Sleep timer Check that the sleep timer is set.
setting is turned
Check the power control settings.
on, or power is
interrupted.
ENWW