Table 3-2. System Error Messages (Continued)

Message

Definition

Probable Causes

 

 

 

Keyboard error

Keyboard not respond-

Built-in keyboard:

 

ing correctly.

Faulty keyboard or key

 

 

pressed while com-

 

 

puter booting.

 

 

External keyboard:

 

 

Cable or connector

 

 

loose. Faulty keyboard

 

 

or key pressed while

 

 

computer booting.

Operating system not found

Operating system can- not be found on hard- disk drive or on diskette in diskette drive.

Incorrect drive configuration. Operat- ing system not installed on hard-disk drive or diskette drive not bootable. Faulty con- nections. Faulty drive. Faulty main board.

Parity check 1

Parity error in system

Faulty main board.

nnnn

bus at address nnnn.

 

 

 

 

Parity check 2

Parity error in I/O bus

Faulty main board.

nnnn

at address nnnn.

 

 

 

 

Real time clock

CMOS battery that

Faulty battery. Faulty

error

supports data stored in

main board.

 

NVRAM may be dead.

 

 

 

 

Shadow RAM

Shadow RAM failed at

Faulty or improperly

failed at off-

address nnnn.

seated memory mod-

set: nnnn

 

ule. Faulty main board.

 

 

 

System battery

CMOS battery dead.

Faulty CMOS battery

is dead—Replace

 

or main board.

and run Setup

 

 

 

 

 

System cache

Primary cache failed.

Faulty microprocessor.

error—cache

 

 

disabled

 

 

 

 

 

3-4 Dell Latitude LM Systems Service Manual

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Image 34
Dell LM P-133ST manual Parity error in system Faulty main board