IBM 5280 Manual page 96

Distributed data system programmable data station maintenance analysis procedures
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D
2
P
DATA ENTRY MAP
5
A-E1 DISPLAY
PAGE
6 OF
10
028
-
Power off.
Set
the
CE meter to the RXI
scale.
Disconnect POI on
A-El
(MIM
201, 203, 227) .
Connect
the positive lead to
A-EI-P01-12,
'-
High
Intensity
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
I
029
-
Use MIM 227 to trace the ,-
High
Intensity Drive' line
for opens or grounds.
- OR - -
-
GO TO THE 5281 OR 5282 DATA
STATION
DATA
ENTRY
MAP
1000, ENTRY POINT A.
030
GO TO THE
5281
OR
5282
DATA
STATION
DATA
ENTRY
MAP 1000,
ENTRY POINT A.
031
Is Keylock feature installed?
Y N
1
o
R S
s
MAP 1011-6
032
(ENTRY POINT S)
-
Probe
A-EI-TP11,
'+
Video
Drive'
(MIM 201, 203, 227).
Up
light: On
Down light: On
Are the lights correct?
Y N
033
-
Power off.
- Connect
the
terminating
resistor,
PIN
4177566 (5.1K)
(MIM 903),
from
A-EI-TP-11,
'+
Vi deo
Dri ve',
to
A-E1-TP-15 (ground)
(MIM 200,
201, 203, 227).
-
Power on.
- Probe
A-EI-TPll,
'+
Video
Dri ve'
(MIM 201, 203, 227).
Up
light: On
Down light:
On
Are the lights correct?
Y N
034
- Probe
A-EI-TPIO,
'+
Horizontal Drive'
(MIM 201,
203, 227).
Up
light: On
Down light: On
Are the lights correct?
Y N
9 987
T U V W
EC840874
PEC839787
MAP 1011-6

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