Dell OptiPlex GL Service Manual - Page 39

Gate A20 fail, CPU0 is B0

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Table 3-2. System Error Messages (continued) Message Definition Probable Causes Diskette subsystem reset failed System could not successfully issue reset command to diskette controller. Faulty diskette/tape drive controller (defective system board). Diskette write protected Diskette write-protect feature activated. Diskette write-protected. Drive not ready Diskette missing from or improperly inserted in diskette drive. Missing, defective, unformatted, or improperly inserted diskette. Gate A20 fail- Gate A20 of the ure keyboard controller malfunctioned. Faulty keyboard controller (defective system board). General failure Operating system cannot execute command. Operating system corrupted or not installed properly. Hard disk controller failure Hard disk drive read failure Hard disk failure Hard-disk drive failed to initialize. Incorrect configuration settings in System Setup program, improperly connected hard-disk drive cable, faulty hard-disk controller subsystem (defective system board), or loose power cable. Incompatible Processor: CPU0 is B0 step or below Unsupported version of Unsupported micromicroprocessor installed processor installed. on system board. Incompatible Processor: CPU1 is B0 step or below Incompatible Processors: Cache sizes different In a dual-processor system both microprocessors do not have the same level-2 cache. Microprocessors do not have the same level-2 cache. Beep Codes and Error Messages 3-5

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Beep Codes and Error Messages
3-5
Diskette sub-
system reset
failed
System could not suc-
cessfully issue reset
command to diskette
controller.
Faulty diskette/tape drive
controller (defective sys-
tem board).
Diskette
write pro-
tected
Diskette write-protect
feature activated.
Diskette write-protected.
Drive not
ready
Diskette missing from
or improperly inserted
in diskette drive.
Missing, defective, unfor-
matted, or improperly
inserted diskette.
Gate A20 fail-
ure
Gate A20 of the
keyboard controller
malfunctioned.
Faulty keyboard control-
ler (defective system
board).
General fail-
ure
Operating system can-
not execute command.
Operating system cor-
rupted or not installed
properly.
Hard disk
controller
failure
Hard disk
drive read
failure
Hard disk
failure
Hard-disk drive failed to
initialize.
Incorrect configuration
settings in System Setup
program, improperly con-
nected hard-disk drive
cable, faulty hard-disk
controller subsystem
(defective system board),
or loose power cable.
Incompatible
Processor:
CPU0 is B0
step or below
Incompatible
Processor:
CPU1 is B0
step or below
Unsupported version of
microprocessor installed
on system board.
Unsupported micro-
processor installed.
Incompatible
Processors:
Cache sizes
different
In a dual-processor
system both micro-
processors do not have
the same level-2 cache.
Microprocessors do not
have the same level-2
cache.
Table 3-2.
System Error Messages
(continued)
Message
Definition
Probable Causes