IBM 5280 Manual page 94
Distributed data system programmable data station maintenance analysis procedures
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K
3
L
DATA ENTRY MAP
3
A-El DISPLAY
PAGE
4 OF
10
016
Power off.
-
Remove
the
terminating
resistor.
-
Set the CE meter to
the
RXl
scale.
-
Disconnect
POI
on A-El
( MIt'1
201, 203, 227) .
-
Connect the positive lead
of
the
meter
to A-EI-POl-5,
'+
Vertical
Drive',
and
the
negative lead to ground
(MIM
201, 203, 227).
-
The
meter should read in the
range of 30 ohms to 150 ohms.
Is the meter reading correct?
Y N
017
-
Use MIM 227 to trace the
'+
Vertical
Drive'
line
for
opens or grounds.
-
OR - -
-
GO TO THE 52S1 OR 52S2 DATA
STATION
DATA
ENTRY
MAP
1000, ENTRY POINT A.
OlS
-
Failing
Data Station Adapter
Card (A-El) (MIM 501).
019
- GO TO THE
5281
OR
5282
DATA
STATION
DATA
ENTRY
MAP 1000,
ENTRY POINT A.
-If the failure is
not
isolated
by
the
Data
Station
Maps,
replace
the
Data
Station
Adapter Card (A-El)
(MIM 501).
E
2
MAP 1011-4
020
- The High Intensity
Drive
line
is turned on by an attribute to
highlight fields.
Is
there
a
problem
with
the
intensity of highlighted fields?
Y N
5
N
021
-
Probe
A-A5BOS,
'+
Diagnostic
Force Video'
(MIM 531).
Up
light: Off
Down light: On
Are the lights correct?
Y N
022
-
Failing Keyboard/Display
M
PUc a r
d (A-
AI)
(
M
1M2
0 0 ) •
If a 'Ros Patch'
cable
is
connected to the card,
GO TO MAP 0600,
ENTRY POINT A.
023
-
Failing
Data Station Adapter
card (A-El)
(MIM 501).
ECS40874
PECS39787
MAP 1011-4
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