Technical data

Troubleshooting
Digital HiNote VP 500 Service Guide
3–3
Boot-up Failure
Problem
Troubleshooting Procedure
You turn on the Notebook and the following
conditions apply:
•
The Notebook’s power is on.
•
There is no screen display
Turn on the power switch:
•
Check the DRAM connections to be sure
that they are secure.
• Ch
eck the LCD connections.
•
Check the system board power circuit.
Post Failure
Problem
Troubleshooting Procedure
You turn on the computer and the following
happens:
•
There is power to the system.
•
The HDD seems to be spinning.
•
The screen is operational, and error codes
and messages are displayed.
•
A POST failure usually indicates a
keyboard, memory, or HDD failure.
•
Check the error code or message against
the error codes and messages in this
chapter..
LCD Panel Failure
Problem
Troubleshooting Procedure
You turn on the computer and one of the
following conditions apply:
•
The system is working, but there is no LCD
panel display.
•
The system is working, but the LCD panel
display vertical or horizontal lines.
•
The backlight comes on, but there is no
display.
•
There is a display, but you have garbled
characters on the screen.
•
Make sure that the LCD cables are securely
connected.
•
Make sure that the LCD cables are securely
connected to the inverter.
•
If the cables are securely connected and the
LCD still doesn’t work, replace the LCD
panel and test the system again.
•
If the display is garbled, there is probably a
VGA chip failure. Replace the
motherboard.