(/
(
(
DIAGNOSTIC
SUMMARY
CHART
( Power On
)I-------t.~
+
-4-------1.,
____
_
BRING UP DIAGNOSTICS
Tests
Halt Indicator
Area Tested
Blank
G2, Power, Display
Bus Bit
In
A
F2
Op
Code
Test
A B F2, G2
R/W Storage
A B C
E2
Interrupt 1, 2, 3 A
B
C
D
C2,C4,D2,D4,E2,F2
Device Address
A B C D E
E2, F2,
J2
Bus
Out
A
B
C
D E F F2
Stuck
Key
A B C D
E F
G
F2,
Keyboard
Storage (0600
to
end)
A B C D E
F
G
H
K2
through N4
ROS
Content
and
CRC A B C D E F G
H I
C2,C4,D2,D4,E2
ROS Address Read Back
A B C D E
F
G
H I
J
E2
Bring Up Complete
A B C D E F G
H
I J K
H2,H4
I
OR--------------------------------------------~
+
DCP 1 Diagnostic Mode
Load DCP 1 Diagnostic Mode:
- Hold
CMD
and press HOLD
APl/BASIC
-
Hold
CMD
and press - (minus) Normal machine
-
Hold CMD and.press *
or
X (multiply)
operation
To
run
CMD
0,
1,2,
3,
4,
or
5:
-
Press C
-
Hold
CMD
and
press
the
appropriate
test
number
(0,
1,2,3,4,
or
5)
-
Press EXECUTE
Test
Area Tested
CMD
0 - Tape Read Internal tape
unit
without
tape motion
CMD
1 - Tape Read Internal tape
unit
with
tape
motion
CMD
2 - Op Code Loop F2, G2
CMD
3 - ROS Read CRC Loop
C2,C4,D2,D4,E2
CMD
4 - ROS Address Loop E2
CMD
5 - R/W Storage
K2
through N4
I
OR----------------------------------------------------------J
+
DCP2
Load DCP 1 Diagnostic Model as described above. Miscellaneous
In
structions:
Run
CMD
0 or 1 as described above.
Press ATTN (
DCP 2
is
now loaded. Select
MD1
from
the
menu
via
the
Press ATTN (
instructions on
the
display.
Press ATTN (
~
y
Loop On
MD
I
MDI
800
- Printer - Refer
to
MDI
800
in
this
section.J
MDI
in this
,Ir
l
MDI
-
820,
Communications and Serial I/O - Refer
to
MDI
820
in
this section. I
,
L
MDI
-
840,
Auxiliary Tape Unit - Refer
to
MDI
840
in
this
section.J
I
MOl
-
860,
Tape Write, Internal and Auxiliary - Refer
to
MOl
860
in this section. I
1 time) =
MDI
Options
2 times)
= DCP 2 Menu
3 times) = DCP 1 Diagnostic Mode
I Instructions = Refer
to
Loop on
section
Intermittent
Failures Troubleshooting Guide
3-75
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