3-4 Troubleshooting
POST Error Messages
The NEC Versa 6220/30/60 notebook computer has a built-in checking program that auto-
matically tests its components when you turn the system power on. This diagnostic test is
called the Power-On Self-Test (POST). If the system finds a problem during the POST, the
system displays an error message or emits a series of beep signals. If this happens, follow
the instructions in the POST Error Messages table or the Beep Code table, as appropriate.
Table 3-2 POST Error Messages
Message
What To Do
Address Line Short
Error in the address decoding circuitry on the system board.
Contact your NECCSD service representative for service work.
C: Drive Error
Hard disk drive C: does not respond. Check that C: hard disk type
in Setup is correct.
C: Drive Failure
Hard disk drive C: does not respond. You may need to replace the
hard disk drive.
Cache Memory Bad,
Do Not Enable Cache
Cache memory is defective. It must be replaced. Contact your
NECCSD service representative for service work.
CH-2 Timer Error
Most ISA computers include two timers. There is an error in timer
2. Contact your NECCSD service representative for service work.
CMOS Battery State
Low
CMOS RAM is powered by a battery. The battery power is low.
Contact your NECCSD service representative to 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 system 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 in floppy drive A: is corrupt. It cannot be used to
boot the computer. Use another boot disk and follow the on-screen
instructions.
DMA error
Error in the DMA controller. Contact your NECCSD service
representative to replace the CMOS battery.
DMA#1 Error
Error in the first DMA channel. Contact your NECCSD service
representative for service.
DMA #2 Error
Error in the second DMA channel. Contact your NECCSD service
representative for service.
