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S T 3
S T 1
S T 2
LED
LED
LED
LED
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
ON
Notes:
1 .
Upon failure, retry loading procedure. If failure persists, replace CIOP PC3.
2 .
Upon failure, retry loading procedure using another set of floppy disks. If failure persists, chcc!i/replace disk drives
and then CIOP PCB, if necessary.
3 .
If reload and CIOP PCB replacement (Noie 1) is not effective, replace memory PCBs starting from sloi 0 until failure
is no longer present.
T a b l e 5 . 0 2
LED Display Values for Loading Errors
HEX
CCDE
0
Start of self test not halted
Main processor error
2
EPROM checksum error
3
MEM slot 0 low 64k test error
4
8k by 8 static RAM test error
5
memory test error
6
SIB side error
Global memory error
D
Watchdog iimer error
E
SIB serial loopback test error
F
SIB counter timing test error
Start boot process (self test done)
9
Disk coniroller error
A
Drive not ready error
CRC retry errcrs exceed 8
Figure 5.01
Unit (Front View)
Issue 1, May 1986
ACTION
N o t e 1
N o t e 1
Notes 1 and 3
N o i e 1
N o t e 1
N o t e 1
N o t e 1
1 and 3
N o t e 1
N o t e 1
N o t e 1
N o t e ' 1
Note 2
Note 2
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