5. No Video, Part 1

Caution: Power is continuous to the system board and power supply even

No video when the power switch is turned off. To prevent damage to the unit, disconnect the power cord from the power source or the unit before beginning disassembly procedures.

Beeps or

flashing CPU Y or keyboard

lights?

N

 

 

Y

 

Monitor LED

 

on?

 

 

 

N

 

 

 

 

 

 

 

Monitor Y plugged in and

turned on?

N

Plug in and turn on monitor, then return to Page 2-2,

Initial Troubleshooting.

Go to Page 2-9,

Error Messages,

Part 1

LED color?

Green

 

Contrast and

N

Turn contrast and

 

 

 

 

 

brightness

 

 

 

 

(note 1)

 

 

 

 

 

 

 

 

 

brightness up.

 

 

 

 

 

turned up?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Amber

 

 

 

 

 

 

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Video

Y

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Go to Page 2-7,

 

 

 

 

 

 

adapter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connected?

 

 

 

 

 

No Video, Part 2

 

 

 

 

 

 

(note 2)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

 

 

 

 

 

Plug in, turn on, and

 

 

 

 

 

 

 

 

 

 

return to Page 2-2,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Initial Troubleshooting.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reconnect

 

 

Y

 

 

Video OK?

Done

monitor (note 3).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N

Replace monitor.

Notes:

1.Older monitors do not support the amber LED.

2.If more than one adapter is installed, monitor must be connected to primary controller.

3.Turn off and unplug computer before reconnecting cables.

2-6 Troubleshooting Flowcharts for Desktop Computers