Beep Codes - NEC VERSA 6220 Service Manual

2-24 Setup and Operation
Beep Codes are listed in the table that follows.
Number Of
Beeps
1
2
3
4
5
6
7
8
9
10
11
Table 2-5 Beep Codes
Error
Refresh Failure
Parity Error
Base 64 KB Memory
Failure
Timer Not Operational
Processor Error
8042 – Gate A20 Failure
Processor Exception
Interrupt Error
Display Memory
Read/Write Error
ROM Checksum Error
CMOS Shutdown
Register Read/Write
Error
Cache Error/External
Cache Bad
Description
The memory refresh circuitry on
the motherboard is faulty.
Parity error in the first 64 KB of
memory.
Memory failure in the first
64 KB.
Memory failure in the first
64 KB of memory or Timer 1 on
the motherboard is not
functioning.
The CPU on the motherboard
generated an error.
The keyboard controller (8042)
may be bad. The BIOS cannot
switch to protected mode.
The CPU generated an
exception interrupt.
The system memory is faulty.
(This is not a fatal error.)
The ROM checksum value does
not match the value encoded in
the BIOS.
The shutdown register for
CMOS RAM failed.
The external cache is faulty.