Table 11-1Numeric Codes and Text Messages (continued)

Control panel message

Description

Recommended action

 

 

 

 

Network Server Mode Active and No

Keyboard failure while Network Server

1.

Reconnect keyboard with computer

Keyboard Attached

Mode enabled.

 

turned off.

 

 

2.

Check connector for bent or missing

 

 

 

pins.

 

 

3.

Ensure that none of the keys are

 

 

 

depressed.

 

 

4.

Replace keyboard.

 

 

 

Parity Check 2

Parity RAM failure.

Run Computer Setup and Diagnostic

 

 

utilities.

 

 

 

 

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes

This section covers the front panel LED codes as well as the audible codes that may occur before or during POST that do not necessarily have an error code or text message associated with them.

WARNING! When the computer is plugged into an AC power source, voltage is always applied to the system board. To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to disconnect the power cord from the wall outlet and allow the internal system components to cool before touching.

NOTE: If you see flashing LEDs on a PS/2 keyboard, look for flashing LEDs on the front panel of the computer and refer to the following table to determine the front panel LED codes.

Recommended actions in the following table are listed in the order in which they should be performed.

Not all diagnostic lights and audible codes are available on all models.

Table 11-2Diagnostic Front Panel LEDs and Audible Codes

Activity

Beeps

Possible Cause

Recommended Action

 

 

 

 

Green Power LED On.

None

Computer on.

None

Green Power LED flashes

None

Computer in Suspend to

every two seconds.

 

RAM mode (some models

 

 

only) or normal Suspend

 

 

mode.

None required. Press any key or move the mouse to wake the computer.

Interpreting POST Diagnostic Front Panel LEDs and Audible Codes 301