NEC VERSA ULTRALITE - Page 68

7-4 Troubleshooting
Post Error Messages
Message Resolution
Address line is short Error in the address decoding circuit on the main board.
C: Drive Error Hard disk drive C: does not respond. Confirm that C: hard disk
type in Setup is correct.
C: Drive Failure Hard disk drive C: does not respond. Replace the hard disk drive.
Cache Memory Bad, Do
Not Enable Cache
Cache memory is defective. It must be replaced.
CH-2 Timer Error Most ISA computers include two timers. There is an error in timer
2.
CMOS Battery State Low CMOS RAM is powered by a battery. The battery power is low.
Connect the system to AC power to charge the CMOS battery. If
the battery does not charge, replace the CMOS battery.
CMOS Checksum Failure After CMOS RAM values are saved, a checksum value is
generated for error checking. The previous value is different from
the current value. Run Setup to reset the value.
CMOS System Options
Not Set
The values stored in CMOS RAM are either corrupt or
nonexistent. Run Setup to reset the value.
CMOS Display Type
Mismatch
The amount of memory on the main board is different than the
amount in CMOS RAM. Run Setup to reset the value.
CMOS Time and Date Not
Set
Run Setup to set the time and date.
Diskette Boot Failure The boot diskette is corrupt. It cannot be used to boot the
notebook. Use another boot disk and follow the on-screen
instructions.
DMA Error Error in the DMA controller. Replace the CMOS battery.
DMA#1 Error Error in the first DMA channel.
DMA#2 Error Error in the second DMA channel.
FDD Controller Failure The BIOS cannot communicate with the floppy disk controller.
Check all appropriate connections.
HDD Controller Failure The BIOS cannot communicate with the hard disk drive
controller. Check all appropriate connections.
INTR #1 Error Interrupt channel 1 failed POST.
INTR #2 Error Interrupt channel 2 failed POST.
Invalid Boot Diskette The BIOS can read the diskette in the disk drive, but cannot boot
the notebook. Use another boot diskette.
Keyboard is Locked
Unlock It
The keyboard lock on the notebook is engaged. The notebook
must be unlocked to continue.
Keyboard Error There is a timing problem with the keyboard. Set the keyboard
option in Setup to “Not Installed” to skip the keyboard POST
routines.
KB/interface Error There is an error in the keyboard connector.