Aspect Medical Systems BISPECTRAL INDEX A-2000, Руководство по обслуживанию

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SECTION VI DIAGNOSTICS AND TROUBLESHOOTING
- 6-6 -
MESSAGES, CAUSES AND CORRECTIVE ACTIONS
The power-up diagnostics identify a number of problems involving the A-2000’s software
and hardware. Table 6.3 shows the messages associated with these diagnostics as well
as the cause of the failure and the corrective action to take. Messages are arranged and
listed in the following categories: RAM, program memory, I/O devices, BIS Engine, real-
time clock, data memory, and setup memory. Corrective actions are arranged according
to probability of cause.
Table 6.3 Power-Up Failure Messages, Causes and Corrective Actions
Failure Messages: Causes: Corrective Actions:
RAM Checks:
8 short tones (no display) Host DRAM failure. Replace main board.
9 short tones (no display) Host SRAM failure. Replace main board.
Program Memory Checks:
1 short tone (no display) Bad checksum or signature
in Boot Block
Replace main board.
Main
Program............FAILED
(2 short tones) Bad checksum or signature
in Main Code area. 1. Reload Main Code again.
2. Replace main board.
I/O Device Checks:
Serial
Port..................FAILED
(7 short tones) Serial Port UART failed
loopback test or interrupt
test.
Replace main board
Counter/Timers.......FAILED
(5 short tones) Counter/timer(s) in Host
processor failed.
Replace main board.
FPGA......................FAILED
(6 short tones) FPGA failed download or
test. 1. Reload boot code and/or
main code again.
2. Replace main board.
Printer
Port.................FAILED Printer Port UART failed
loopback test or interrupt
test.
Replace main board.
Diagnostic
Port..........FAILED Diagnostic Port UART failed
loopback test or interrupt
test. Replace main board.