IBM 5280 Manual page 92

B
1
002
DATA ENTRY MAP
A-El DISPLAY
PAGE 2 OF 10
- Select and run MDI 1070 (MIM
961).
Was the failure found by MDI
1070?
Y N
003
Is the failing Display
compl etely dark
'?
Y N
004
Is the Display stable?
Y N
005
- Probe A-E4D04~ '18 MHz
clock' (MIM 531).
1
064
Up light: On
Down light: On
Are the lights correct?
Y N
006
-
For the line probed
the previ
OLIS
step~
Up
light: Off
Down light: On
Are the lights correct?
Y N
C D E F G H
; n
F G H
MAP 1011-2
007
- Failing Diskette/Main MPU
Card (A-Cl) (MIM 303).
If a 'ROS Patch' cable ;s
connected to the
card~
GO TO MAP 0600,
ENTRY POINT A.
OOS
- The 'IS MHz Clock' line is
failing. Suspect a shorted
net. Use the net list (MIM
531) to isolate the problem.
OR - - - - -
- Failing Diskette/Main
MPU
Ca r d (A- C 1) ( M I M 303).
If a 'ROS Patch' cable ;s
connected to the card,
GO TO MAP 0600, ENTRY POINT A.
009
- Probe A-E3D02, '1 MHz clock'
(f'"1If'1
531).
Up light: On
Down
1
i gl"l t: On
Are the lights correct?
Y N
3
J
010
- Failing 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.
EC840874 PEC839787
MAP 1011-2