Cabletron Systems 520 User Manual
Page 74
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Problem Solving
A-4
1 = On, 0 = Off
G = On, Green
1
0
G 0
1
0
1
0
Option card dpram setup (if present)
1
0
G 0
1
0
1
1
Serial channel internal loopback test
1
0
G 0
1
1
0
0
Debug console internal loopback test
1
0
0
G 0
0
0
1
Memory test setup
1
0
0
G 0
0
1
0
Bank 0 simm presence test
1
0
0
G 0
0
1
1
Bank 1 simm presence test
1
0
0
G 0
1
0
0
Test for no memory present
1
0
0
G 0
1
0
1
Test for simm size, bank 0
1
0
0
G 0
1
1
0
Test for simm size, bank 1
1
0
0
G 0
1
1
1
Re-map available memory
1
0
0
G 1
0
0
0
Refresh test
1
0
0
G 1
0
0
1
DRAM array test
1
0
0
G 1
0
1
0
Save DRAM configuration and size
1
0
0
G 1
0
1
1
Set the stack pointer and jump to manufacturing
tests
Table A-1. Router Self Test Progress LED States
1 2 3 4 5 6
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