IBM 5280 Manual page 81

D S T V
5 8 8 8
DATA ENTRY NAP
A-Al DISPLAY
PAGE
9 OF 18
034
- Defective
Keyboard/Display MPU card
(A-Al) (MIM 200).
If
=
'ROS
P=~c-h' ~~blp ;s
connected to the card,
GO TO MAP 0600,
ENTRY POINT A.
035
- Defective Keyboard/Display
MPU card (A-Al) (MIM 200).
If a 'ROS Patch' cable is
connected to the card,
GO TO MAP 0600,
ENTRY POINT A.
036
GO TO MAP 0100, ENTRY POINT A.
037'
Is the Display CRT filament on?
Y N
038
- Probe the display connector
P20~006
(MIM 217).
Up light: On
Down light: On
Are the lights correct?
Y N
1 "1
o
0
w
X Y
Y
NAP 1010-9
039
- Power off.
- Disconnect A-AI-POl (MIM 217).
- Powel
4
on.
Probe A-AI-TP16.
'+
Horizontal
Drive' (MIM 217).
Up light: On
Down light: On
Are the lights correct?
Y N
040
- Defective Keyboard/Display
t-1P U car
d
(A- AI)
(~1I
M 200).
If a 'ROS Patch' cable;s
connected to the card,
GO TO MAP 0600, ENTRY POINT A.
O'~
1
- Use MIM 217
Horizontal
to trace the
Drive' line
opens or grounds.
- OR
- Defective Display Unit
lSI) .
'+
for
(MIM
ECS40S74 PEC8397S7
MAP 1010-9