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26
Sun-3/260 Hardware Installation Manual
Table 2-1
Diagnostic LEDs
g
LEDs
What the System is Doing
lVhat
~figlzt
Be Bad
If
• =
ON,
0
=
OFF
When These LEDs Are Cycling
This Indication Stays On
0
7
And LED
6/7
Lights
•
• • •
• • • •
A reset sets LEDs to this state
CPU or PROMs bad
or +SVDC is low
•
0
0
0
0
0
0
0
Test OxO1 checking PROM checksum
Boot PROM
0
•
0
0
0
0
0
0
Test Ox02 checking DVMA Register
CPU Board
I
•
•
0
0
0
0
0
0
Test Ox03 checking the Context Register
CPU Board (MMU)
I
0
0
•
0
0
0
0
0
Test Ox04 Segment Map RAM wr/rd test
CPU Board (MMU)
•
0
•
0
0
0
0
0
Test OxOS checking Segment Map RAM
CPU Board (MMU)
0
• •
0
0
0
0
0
Test Ox06 checking Page Map RAM
CPU Board (MMU)
•
• •
0
0
0
0
0
Test OxO? performs memory path data test
CPU or Memory Board
0
0
0
•
0
0
0
0
Test Ox08 is nonexistent memory
bus error test
CPU or Memory Board
•
0
0
•
0
0
0
0
Test Ox09 checks interrupt capabilities
CPU Board
0
•
0
•
0
0
0
0
Test OxOA performs TOO clock interrupt test
I
CPU Board
•
•
0
•
0
0
0
0
Test O"OB checking MMU protection and status
CPU Board (MMU)
0
0
•
•
0
0
0
0
Test OxOC performs ECC error test
CPU or Memory Board
•
0
• •
0
0
0
0
Test OxOD checks cache data wr/rd capabilities
CPU Board
I
0
•
..
•
0
0
0
0
Test OxOE performs cache data 3 pattern test
CPU Board
I
0
Test Ox-OF performs cache tag wr/re test
CPU Board
•
•
• •
0
0
0
0
0
0
0
•
0
0
0
Test OxlO performs cache tag 3 pattern test
CPU Board
•
0
0
0
•
0
0
0
I
Test OxIl periorms memory tests
CPU or Memory Board
0
•
0
0
• • • •
Initializing MMU
CPU Board
0
0
0
0
0
0
0
•
Self-Tests have found an error
CPU or Memory Board
I
0
0
0
0
0
0
•
0
An Exception Class error was found
I
CPU or Memory Board
!
0
0
0
0
0
•
0
0
Self-Test done, UNIX in boot-state
CPU or Memory Board
or monitor quiescent (LED is blinking)
.. =>
O~
o=>
0:::)
~=> O~
o~
0
"'Nal.k.ir.g Ones" raUem
UNIX rJnnin
ok:lV
DOG
I
~
'l
o
OJ>
I
~
Test#
I
~
;
i
0
~Healtbeat
BitL:3~E"~~PtlOQ
o
-i.-.-
E.'TOr
7
,
~~sun
~
"Tlcrosyste'TlS
Revision A of 10 OctDber 1986
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