NEC SV8500 Operation And Maintenance Manual - page 372
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CHAPTER 3
System Messages
[49H] CPU ACT/STBY Changeover Failure (Transfer Error)
Error detection by Routine
Diagnosis
ACT system after changeover
Data Analyzed by NEC Engineers
1:
49XX
0000
XXXX
XXXX
2:
0000
0000
0000
0000
3:
0000
0000
0000
0000
4:
0000
0000
0000
0000
5:
0000
0000
0000
0000
6:
0000
0000
0000
0000
7:
0000
0000
0000
0000
8:
0000
0000
0000
0000
9:
0000
0000
0000
0000
b7
b1
b0
3
1 2
[49H] CPU ACT/STBY Changeover Failure
(Transfer Error)
1
b0:
CPU
0/1 = ACT 0/ACT 1
b1:
TSW
0/1 = ACT 0/ACT 1
2
3