"Compaq.com - Compaq Presario 1200 Series Maintenance and Service Guide - Models: 1230 and 1232

Screen is blank.

 

Screen save was initiated by Power

 

Press any key or touch the Touch Pad.

 

 

Management due to lack of user

 

 

 

 

activity.

 

 

 

 

 

 

 

Display is blank and the Suspend icon is flashing.

Internal display is blank and the screen on an external monitor displays information.

Display has overheated. System is in Suspend mode.

Display function was switched to the external monitor.

If computer is in direct sunlight, move it and allow it to cool off.

Press any key or touch the Touch Pad.

Use Fn + F2 to switch between LCD or CRT.

Problem

Internal display flashes or has garbled characters when computer is connected to external monitor.

Probable Cause

 

Solution(s)

 

 

 

Using 1024 × 768 or higher

 

Restart the computer.

resolution on external

 

 

monitor and have toggled

 

 

back to internal display,

 

 

which supports up to

 

 

800 × 600.

 

 

 

 

 

The light tubes on the edge of the display panel do not light up at all and Power-On Self-Test (POST) completes when the unit is powered up.**

The light tubes on the edge of the display panel do not light up at all and Power-On Self-Test (POST) does not complete when the unit is powered up.**

Improper backlight or display cable connections

Defective inverter board.

Defective display cable.

Defective display panel. Defective system board.

Defective system board.

Replace the display assembly.

Replace the display assembly.

Replace the display assembly.

Replace the display assembly. Replace the system board.

Replace the system board.

Backlight (brightness) cannot be adjusted

 

Improper display cable

with Fn + F7 (¯ ) or

 

connections.

Fn + F8 (- ).***

 

 

 

 

Defective inverter board.

 

 

 

 

 

 

Defective display cable.

 

 

 

 

 

 

Defective system board.

 

 

 

 

 

 

 

 

 

 

Contrast cannot be adjusted with

 

Improper display cable

Fn + F5 (¯ ) or Fn + F6 (- ).

 

connections.

 

 

 

Defective inverter board.

Defective display cable.

Defective system board.

1.Reseat the display cable to the system board.

2.Replace the display assembly.

Replace the display assembly.

Replace the display assembly. Replace the system board.

1.Reseat the display cable to the system board.

2.Replace the display assembly.

Replace the display assembly.

Replace the display assembly. Replace the system board.

file:///C/SERVICE%20MANUALS/COMPAQ%20_%20chec...RIO%201200%20SERIES%201230%201232/solving.html (5 of 8)6/27/2004 2:20:26 AM