Packard Bell 5800 User Manual

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Any of these failures will generate the following:
Channel Mode LED will blink amber eight times and
the speaker will sound eight tones. The Channel Mode
LED will change to green and normal operations will be
attempted after the tones are sounded. These failures
indicate that the LEDs and audible alarm functions
may not be reliable.
RAM Read/Write Failure - This indicates that one or
more bytes of the microprocessor RAM failed a
write/read test.
ROM Checksum Failure - This indicates that the
microprocessor ROM failed to generate the proper
checksum.
Register Read/Write Failure - This indicates that one
or more of the microprocessor’s registers have
become defective.
If the errors occur consistently, the DEU needs to be
serviced. Contact your service provider.
RAM Checksum Failure
The Channel Mode LED will alternately blink green
and amber indefinitely. This indicates that the
firmware stored in the non-volatile RAM has become
corrupted and new firmware data will need to be
downloaded from the SCSI bus to correct this problem.
Contact Technical Support.