Maintenance and Troubleshooting 4-5
TROUBLESHOOTING
This subsection provides information that helps isolate and repair system malfunctions at the
field level. Step-by-step instructions for diagnosing and solving system hardware problems
are provided.
If disassembly is required, see Section 5. Connector pin assignments are given in Appendix
A. Switch settings are given in Appendix B.
Error Messages
Messages may appear when running NEC utilities. Table 4-2 describes possible system error
messages.
Table 4-3 describes possible PCI error messages.
Table 4-2 System Error Messages
Message
Description
Address Line Short
Error in the address decoding circuitry on the system board.
Cache Memory Failure, Do
Not
Enable Cache
Cache memory is defective. Replace the CPU.
CMOS Battery Failed
CMOS RAM battery power is low. Replace the battery (see
battery replacement at the end of this section).
CMOS Checksum Invalid
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 .
CMOS System Options Not
Set
The values stored in CMOS RAM are either corrupt or
nonexistent. Run Setup (see Section 2).
CMOS Time and Date Not Set
Run Setup to set the date and time (see Section 2).
Diskette Boot Failure
The boot disk in drive A: is corrupt and cannot be used to boot
the system. Use another boot disk and follow the screen
instructions.
DMA Controller Error
Error in the DMA controller.
Drive Not Ready Error
The BIOS cannot communicate with the diskette drive. Power
off the system and check all connections.
Floppy Disk Controller Failure
The BIOS cannot communicate with the diskette drive
controller. Power off the system and check all connections.
Floppy Drive A: Failure
The BIOS cannot access the diskette drive A:. Power off the
system and check all connections.
Floppy Drive B: Failure
The BIOS cannot access the diskette drive B:. Power off the
system and check all connections.
Summary of Contents for POWERMATE PRO150
Page 152: ...A 16 Connector Pin Assignments ...
Page 160: ...B 8 System Board Settings ...