IBM 5100 Maintenance Analysis Procedures page 98

X
5
DISPLAY MAP
PAGE 6 OF 10
053
-Switch the RUN switch under the covers to run.
-Switch the DISPlAY REGISTERS switch to
OISPLAY REGISTERS.
DQe$ the failure appear as vertical lines on
the display?
Y N
054
-Switch the RUN switch under the covers to
not run.
Is the video on the display stable?
Y N
055
-Switch the RUN switch under the covers
to run.
-Probe K6-A02 (-external vertical sync).
(refer to 241 display Z3 socket locations).
Are both lights on?
Y N
056
-Disconnect the cable from Z3.
-Probe K6-A02.
Are both lights on?
Y N
057
-Connect the Z3 (display and control
panel) cable.
Defective J2 (display) card.
058
Defective display llssembly,
Check/replace display and control panel
cable (refer to 210,241).
6
7 6 A
Y Z A
Z A
6 A
6
059
MAP 0500-6
Defective display assembly,
Check/replace display and control panel cable
(refer to 210,241).
060
-Switch the RUN switch under the covers to run.
-Switch the DISPLAY REGISTERS switch to
NORMAL.
Within 10 seconds after RESTART is pressed,
the following events should occur:
1. ABCDEFGH Appears on the top line of the 5
inch display.
2. ABCDEFGHI Appears on the top line.
3. The top line is blanked and either LOAO 0 or
CLEAR WS appears on the display.
Do all three events listed above occur in
sequence after RESTART is pressed?
Y N
061
Go to MAP 0400. Entry Point A.
062
Is there a flashing cursor displayed on the
line below CLEAR WS or LOAD 0 and
nowhere else?
Y N
063
-Power down.
-Remove the storage cards L2, L4, M2, M4,
N2, and N4.
-Power up. Wait 30 seconds.
Is there a flashing cursor displayed on the
line below CLEAR WS or LOAD 0 and
nowhere else?
Y N
777
A A A
BCD
28SEP76 PN 1608389
EC 829670 PEC 828851
MAP 0500-6