IBM 5280 Manual page 44
Distributed data system programmable data station maintenance analysis procedures
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C
I
BASE MAP
BASE ENTRY
PAGE
2 OF
3
003
Does
Power
On Checkout fail with
only ONE Display Indicator on?
Y N
004
Does Power On Checkout fail with
only TEN Display Indicators on?
Y N
005
-
IPL Diagnostic Diskette 1.
-
Load 'DCP'
(MIM 951).
Is
the
main
option
menu
displayed on the screen?
Y N
006
- The MDI
and
step
number
should be displayed in the
status line.
Is
MDI
displayed?
Y N
007
0510
step
002
-
Use
Display/Alter
to
(MIM
isolate
991).
further
008
Perform
repair.
009
the
indicated
Are
you diagnosing a Main MPU
error?
Y N
010
-
Run
test
the
Main
(MD!
diagnose
the
961).
A
Storage
0520)
to
(MIM
error
D E F
D E F
MAP 0500-2
011
-
Run
the
Main MPU test (MDI
0510) in loop mode to
check
for
an
intermittent
(MIM
951. 961),
012
GO TO MAP 0511, ENTRY POINT A.
013
(ENTRY POINT B)
-
Probe A-C7B02 '- Feature Storage
Select'
(MIM 501).
Up
light: On
Down light: On
Are the lights correct?
Y N
014
-
Defective
Diskette/Main
MPU
card (A-Cl)
(MIM 303).
-
If
a
'Ros
Patch'
cable
is
connected to the card,
GO TO MAP 0600, ENTRY POINT A.
015
-
Probe;
A-C6D13 '
SAR BIT 0'
A-C6B02 '- SAR GRP BIT 7'
01IM 501).
Up
light: Off
Down light: On
Are the lights correct for
either
line?
Y N
3
G
016
-
Load
'DCP'
(MIN 951) and run
Main
storage
A
test
(MDI
0520) .
EC840874
PEC839787
MAP 0500-2
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